ARM: SoC driver updates for v5.17

There are cleanups and minor bugfixes across several SoC specific
 drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
 Renesas, ZynqMP
 
 Noteworthy new features are:
 
  - The op-tee firmware driver gains support for asynchronous
    notifications from secure-world firmware.
 
  - Qualcomm platforms gain support for new SoC types in various
    drivers: power domain, cache controller, RPM sleep, soc-info
 
  - Samsung SoC drivers gain support for new SoCs in ChipID and PMU,
    as well as a new USIv2 driver that handles various types of
    serial communiction (uart, i2c, spi)
 
  - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple
    drivers, as well as memory controller support for RZ/G2L
    (R9A07G044).
 
  - Apple M1 gains support for the PMGR power management driver
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmHDpK8ACgkQmmx57+YA
 GNmUqhAAnaxXJeu+dfWanrAAeH1MKju/uxB6bogtwrAc928BaqmeZfiAqsT9KsWu
 FhkWSGRu+y74fct4zkD3xfl0V2ROSrSjcvrWVu0GJPnXoOLKDZ1RbdZDnfXbwowa
 4urL5HeOtKYUpLjw7z8EQ43SHZba7CsiImGcF/4OtHW1hNGNIlU/Mym93lFT5Xdq
 HwDrktBWWVvBkCnxVGJjMwGGSCJbowIsPK8p8xr4CqML4Vdcx89qKB8cnCOg8Bgo
 YqzcJCTOY9K5qXI8D20GaTJCP5vCPxMgmeFn4LgWa+h9iJrt+g4J8zA1qGw92nwJ
 W2uRu/6YkCC2HMiyExuxkJNPKbFRbOqAm7lA/ZzuFpFU5RowACIrlwm4ZR/4UFDG
 fzrt3ZfNLRu33QxqhKY0jWGeHu729+RE2kpQ4FXveFmrtRIWnuX70/+NQFVhm+qy
 EBgXmlWNhTh2tcgfEzPja52+5h3SYKk6/J44266i/34x5eLDvmuRADzCVpLUmbPS
 G5UHVkWHZPJne6ZJQ+yz+o2h6BjcpCTvPRbt2/KkSOo9S0Qj4/XrOUHBAofy3odH
 Tdiba6lXMHZqvLlOOrMyJ0qdv26FJyJaSg5Wqhq45G1YCW5Xjc+cYzZggJBvBpIh
 thyN4b9jqfTnAZzKB6LCBUmEF2A7gXkuW9oXzNUkKtVzYluu1aQ=
 =tlZT
 -----END PGP SIGNATURE-----

Merge tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "There are cleanups and minor bugfixes across several SoC specific
  drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
  Renesas, ZynqMP

  Noteworthy new features are:

   - The op-tee firmware driver gains support for asynchronous
     notifications from secure-world firmware.

   - Qualcomm platforms gain support for new SoC types in various
     drivers: power domain, cache controller, RPM sleep, soc-info

   - Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as
     well as a new USIv2 driver that handles various types of serial
     communiction (uart, i2c, spi)

   - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers,
     as well as memory controller support for RZ/G2L (R9A07G044).

   - Apple M1 gains support for the PMGR power management driver"

* tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits)
  soc: qcom: rpmh-rsc: Fix typo in a comment
  soc: qcom: socinfo: Add SM6350 and SM7225
  dt-bindings: arm: msm: Don't mark LLCC interrupt as required
  dt-bindings: firmware: scm: Add SM6350 compatible
  dt-bindings: arm: msm: Add LLCC for SM6350
  soc: qcom: rpmhpd: Sort power-domain definitions and lists
  soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280
  soc: qcom: rpmhpd: Rename rpmhpd struct names
  soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao
  soc: qcom: socinfo: add SM8450 ID
  soc: qcom: rpmhpd: Add SM8450 power domains
  dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding
  soc: qcom: smem: Update max processor count
  dt-bindings: arm: qcom: Document SM8450 SoC and boards
  dt-bindings: firmware: scm: Add SM8450 compatible
  dt-bindings: arm: cpus: Add kryo780 compatible
  soc: qcom: rpmpd: Add support for sm6125
  dt-bindings: qcom-rpmpd: Add sm6125 power domains
  soc: qcom: aoss: constify static struct thermal_cooling_device_ops
  PM: AVS: qcom-cpr: Use div64_ul instead of do_div
  ...

Documentation/devicetree/bindings/arm/cpus.yaml

@@ -174,6 +174,7 @@ properties:
       - qcom,kryo560
       - qcom,kryo570
       - qcom,kryo685
+      - qcom,kryo780
       - qcom,scorpion
 
   enable-method:

Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml

@@ -24,6 +24,12 @@ properties:
   compatible:
     const: linaro,optee-tz
 
+  interrupts:
+    maxItems: 1
+    description: |
+      This interrupt which is used to signal an event by the secure world
+      software is expected to be edge-triggered.
+
   method:
     enum: [smc, hvc]
     description: |
@@ -42,10 +48,12 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
     firmware  {
         optee  {
             compatible = "linaro,optee-tz";
             method = "smc";
+            interrupts = <GIC_SPI 187 IRQ_TYPE_EDGE_RISING>;
         };
     };
 

Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml

@@ -24,6 +24,7 @@ properties:
       - qcom,sc7180-llcc
       - qcom,sc7280-llcc
       - qcom,sdm845-llcc
+      - qcom,sm6350-llcc
       - qcom,sm8150-llcc
       - qcom,sm8250-llcc
 
@@ -44,7 +45,6 @@ required:
   - compatible
   - reg
   - reg-names
-  - interrupts
 
 additionalProperties: false
 

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -50,6 +50,7 @@ description: |
         sm8150
         sm8250
         sm8350
+        sm8450
 
   The 'board' element must be one of the following strings:
 
@@ -257,6 +258,11 @@ properties:
               - qcom,sm8350-mtp
           - const: qcom,sm8350
 
+      - items:
+          - enum:
+              - qcom,sm8450-qrd
+          - const: qcom,sm8450
+
 additionalProperties: true
 
 ...

Documentation/devicetree/bindings/firmware/qcom,scm.txt

@@ -26,9 +26,11 @@ Required properties:
  * "qcom,scm-sc7280"
  * "qcom,scm-sdm845"
  * "qcom,scm-sdx55"
+ * "qcom,scm-sm6350"
  * "qcom,scm-sm8150"
  * "qcom,scm-sm8250"
  * "qcom,scm-sm8350"
+ * "qcom,scm-sm8450"
  and:
  * "qcom,scm"
 - clocks: Specifies clocks needed by the SCM interface, if any:

Documentation/devicetree/bindings/memory-controllers/renesas,rpc-if.yaml

@@ -24,7 +24,8 @@ allOf:
 
 properties:
   compatible:
-    items:
+    oneOf:
+      - items:
           - enum:
               - renesas,r8a774a1-rpc-if       # RZ/G2M
               - renesas,r8a774b1-rpc-if       # RZ/G2N
@@ -34,7 +35,12 @@ properties:
               - renesas,r8a77980-rpc-if       # R-Car V3H
               - renesas,r8a77995-rpc-if       # R-Car D3
               - renesas,r8a779a0-rpc-if       # R-Car V3U
-      - const: renesas,rcar-gen3-rpc-if   # a generic R-Car gen3 or RZ/G2 device
+          - const: renesas,rcar-gen3-rpc-if   # a generic R-Car gen3 or RZ/G2{E,H,M,N} device
+
+      - items:
+          - enum:
+              - renesas,r9a07g044-rpc-if      # RZ/G2{L,LC}
+          - const: renesas,rzg2l-rpc-if       # RZ/G2L family
 
   reg:
     items:
@@ -48,7 +54,9 @@ properties:
       - const: dirmap
       - const: wbuf
 
-  clocks:
+  clocks: true
+
+  interrupts:
     maxItems: 1
 
   power-domains:
@@ -67,8 +75,6 @@ patternProperties:
             - cfi-flash
             - jedec,spi-nor
 
-unevaluatedProperties: false
-
 required:
   - compatible
   - reg
@@ -79,6 +85,26 @@ required:
   - '#address-cells'
   - '#size-cells'
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,rzg2l-rpc-if
+then:
+  properties:
+    clocks:
+      items:
+        - description: SPI Multi IO Register access clock (SPI_CLK2)
+        - description: SPI Multi IO Main clock (SPI_CLK).
+
+else:
+  properties:
+    clocks:
+      maxItems: 1
+
+unevaluatedProperties: false
+
 examples:
   - |
     #include <dt-bindings/clock/renesas-cpg-mssr.h>

Documentation/devicetree/bindings/power/qcom,rpmpd.yaml

@@ -24,6 +24,7 @@ properties:
       - qcom,msm8994-rpmpd
       - qcom,msm8996-rpmpd
       - qcom,msm8998-rpmpd
+      - qcom,qcm2290-rpmpd
       - qcom,qcs404-rpmpd
       - qcom,sdm660-rpmpd
       - qcom,sc7180-rpmhpd
@@ -32,10 +33,12 @@ properties:
       - qcom,sdm845-rpmhpd
       - qcom,sdx55-rpmhpd
       - qcom,sm6115-rpmpd
+      - qcom,sm6125-rpmpd
       - qcom,sm6350-rpmhpd
       - qcom,sm8150-rpmhpd
       - qcom,sm8250-rpmhpd
       - qcom,sm8350-rpmhpd
+      - qcom,sm8450-rpmhpd
 
   '#power-domain-cells':
     const: 1

Documentation/devicetree/bindings/soc/qcom/qcom-stats.yaml

@@ -21,6 +21,11 @@ properties:
     enum:
       - qcom,rpmh-stats
       - qcom,rpm-stats
+      # For older RPM firmware versions with fixed offset for the sleep stats
+      - qcom,apq8084-rpm-stats
+      - qcom,msm8226-rpm-stats
+      - qcom,msm8916-rpm-stats
+      - qcom,msm8974-rpm-stats
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/soc/samsung/exynos-chipid.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/arm/samsung/exynos-chipid.yaml#
+$id: http://devicetree.org/schemas/soc/samsung/exynos-chipid.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Samsung Exynos SoC series Chipid driver

Documentation/devicetree/bindings/soc/samsung/exynos-pmu.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/arm/samsung/pmu.yaml#
+$id: http://devicetree.org/schemas/soc/samsung/exynos-pmu.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Samsung Exynos SoC series Power Management Unit (PMU)
@@ -24,6 +24,7 @@ select:
           - samsung,exynos5420-pmu
           - samsung,exynos5433-pmu
           - samsung,exynos7-pmu
+          - samsung,exynos850-pmu
           - samsung-s5pv210-pmu
   required:
     - compatible
@@ -41,6 +42,7 @@ properties:
           - samsung,exynos5420-pmu
           - samsung,exynos5433-pmu
           - samsung,exynos7-pmu
+          - samsung,exynos850-pmu
           - samsung-s5pv210-pmu
       - const: syscon
 

Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml

@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/samsung/exynos-usi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung's Exynos USI (Universal Serial Interface) binding
+
+maintainers:
+  - Sam Protsenko <semen.protsenko@linaro.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+description: |
+  USI IP-core provides selectable serial protocol (UART, SPI or High-Speed I2C).
+  USI shares almost all internal circuits within each protocol, so only one
+  protocol can be chosen at a time. USI is modeled as a node with zero or more
+  child nodes, each representing a serial sub-node device. The mode setting
+  selects which particular function will be used.
+
+  Refer to next bindings documentation for information on protocol subnodes that
+  can exist under USI node:
+
+  [1] Documentation/devicetree/bindings/serial/samsung_uart.yaml
+  [2] Documentation/devicetree/bindings/i2c/i2c-exynos5.txt
+  [3] Documentation/devicetree/bindings/spi/spi-samsung.txt
+
+properties:
+  $nodename:
+    pattern: "^usi@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - samsung,exynos850-usi   # for USIv2 (Exynos850, ExynosAutoV9)
+
+  reg: true
+
+  clocks: true
+
+  clock-names: true
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  samsung,sysreg:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      Should be phandle/offset pair. The phandle to System Register syscon node
+      (for the same domain where this USI controller resides) and the offset
+      of SW_CONF register for this USI controller.
+
+  samsung,mode:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Selects USI function (which serial protocol to use). Refer to
+      <include/dt-bindings/soc/samsung,exynos-usi.h> for valid USI mode values.
+
+  samsung,clkreq-on:
+    type: boolean
+    description:
+      Enable this property if underlying protocol requires the clock to be
+      continuously provided without automatic gating. As suggested by SoC
+      manual, it should be set in case of SPI/I2C slave, UART Rx and I2C
+      multi-master mode. Usually this property is needed if USI mode is set
+      to "UART".
+
+      This property is optional.
+
+patternProperties:
+  # All other properties should be child nodes
+  "^(serial|spi|i2c)@[0-9a-f]+$":
+    type: object
+    description: Child node describing underlying USI serial protocol
+
+required:
+  - compatible
+  - ranges
+  - "#address-cells"
+  - "#size-cells"
+  - samsung,sysreg
+  - samsung,mode
+
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - samsung,exynos850-usi
+
+then:
+  properties:
+    reg:
+      maxItems: 1
+
+    clocks:
+      items:
+        - description: Bus (APB) clock
+        - description: Operating clock for UART/SPI/I2C protocol
+
+    clock-names:
+      items:
+        - const: pclk
+        - const: ipclk
+
+  required:
+    - reg
+    - clocks
+    - clock-names
+
+else:
+  properties:
+    reg: false
+    clocks: false
+    clock-names: false
+    samsung,clkreq-on: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/soc/samsung,exynos-usi.h>
+
+    usi0: usi@138200c0 {
+        compatible = "samsung,exynos850-usi";
+        reg = <0x138200c0 0x20>;
+        samsung,sysreg = <&sysreg_peri 0x1010>;
+        samsung,mode = <USI_V2_UART>;
+        samsung,clkreq-on; /* needed for UART mode */
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+        clocks = <&cmu_peri 32>, <&cmu_peri 31>;
+        clock-names = "pclk", "ipclk";
+
+        serial_0: serial@13820000 {
+            compatible = "samsung,exynos850-uart";
+            reg = <0x13820000 0xc0>;
+            interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&cmu_peri 32>, <&cmu_peri 31>;
+            clock-names = "uart", "clk_uart_baud0";
+            status = "disabled";
+        };
+
+        hsi2c_0: i2c@13820000 {
+            compatible = "samsung,exynosautov9-hsi2c";
+            reg = <0x13820000 0xc0>;
+            interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+            clocks = <&cmu_peri 32>, <&cmu_peri 31>;
+            clock-names = "hsi2c_pclk", "hsi2c";
+            status = "disabled";
+        };
+    };

Documentation/staging/tee.rst

@@ -184,6 +184,36 @@ order to support device enumeration. In other words, OP-TEE driver invokes this
 application to retrieve a list of Trusted Applications which can be registered
 as devices on the TEE bus.
 
+OP-TEE notifications
+--------------------
+
+There are two kinds of notifications that secure world can use to make
+normal world aware of some event.
+
+1. Synchronous notifications delivered with ``OPTEE_RPC_CMD_NOTIFICATION``
+   using the ``OPTEE_RPC_NOTIFICATION_SEND`` parameter.
+2. Asynchronous notifications delivered with a combination of a non-secure
+   edge-triggered interrupt and a fast call from the non-secure interrupt
+   handler.
+
+Synchronous notifications are limited by depending on RPC for delivery,
+this is only usable when secure world is entered with a yielding call via
+``OPTEE_SMC_CALL_WITH_ARG``. This excludes such notifications from secure
+world interrupt handlers.
+
+An asynchronous notification is delivered via a non-secure edge-triggered
+interrupt to an interrupt handler registered in the OP-TEE driver. The
+actual notification value are retrieved with the fast call
+``OPTEE_SMC_GET_ASYNC_NOTIF_VALUE``. Note that one interrupt can represent
+multiple notifications.
+
+One notification value ``OPTEE_SMC_ASYNC_NOTIF_VALUE_DO_BOTTOM_HALF`` has a
+special meaning. When this value is received it means that normal world is
+supposed to make a yielding call ``OPTEE_MSG_CMD_DO_BOTTOM_HALF``. This
+call is done from the thread assisting the interrupt handler. This is a
+building block for OP-TEE OS in secure world to implement the top half and
+bottom half style of device drivers.
+
 AMD-TEE driver
 ==============
 

MAINTAINERS

@@ -2551,6 +2551,7 @@ Q:	https://patchwork.kernel.org/project/linux-samsung-soc/list/
 F:	Documentation/arm/samsung/
 F:	Documentation/devicetree/bindings/arm/samsung/
 F:	Documentation/devicetree/bindings/power/pd-samsung.yaml
+F:	Documentation/devicetree/bindings/soc/samsung/
 F:	arch/arm/boot/dts/exynos*
 F:	arch/arm/boot/dts/s3c*
 F:	arch/arm/boot/dts/s5p*

arch/arm/mach-at91/pm.c

@@ -645,6 +645,7 @@ static __init int at91_dt_ramc(bool phy_mandatory)
 		if (!soc_pm.data.ramc[idx]) {
 			pr_err("unable to map ramc[%d] cpu registers\n", idx);
 			ret = -ENOMEM;
+			of_node_put(np);
 			goto unmap_ramc;
 		}
 
@@ -670,6 +671,7 @@ static __init int at91_dt_ramc(bool phy_mandatory)
 		if (!soc_pm.data.ramc_phy) {
 			pr_err("unable to map ramc phy cpu registers\n");
 			ret = -ENOMEM;
+			of_node_put(np);
 			goto unmap_ramc;
 		}
 	}

drivers/bus/imx-weim.c

@@ -21,6 +21,7 @@ struct imx_weim_devtype {
 	unsigned int	cs_stride;
 	unsigned int	wcr_offset;
 	unsigned int	wcr_bcm;
+	unsigned int	wcr_cont_bclk;
 };
 
 static const struct imx_weim_devtype imx1_weim_devtype = {
@@ -41,6 +42,7 @@ static const struct imx_weim_devtype imx50_weim_devtype = {
 	.cs_stride	= 0x18,
 	.wcr_offset	= 0x90,
 	.wcr_bcm	= BIT(0),
+	.wcr_cont_bclk	= BIT(3),
 };
 
 static const struct imx_weim_devtype imx51_weim_devtype = {
@@ -206,8 +208,20 @@ static int weim_parse_dt(struct platform_device *pdev, void __iomem *base)
 	if (of_property_read_bool(pdev->dev.of_node, "fsl,burst-clk-enable")) {
 		if (devtype->wcr_bcm) {
 			reg = readl(base + devtype->wcr_offset);
-			writel(reg | devtype->wcr_bcm,
+			reg |= devtype->wcr_bcm;
-				base + devtype->wcr_offset);
+
+			if (of_property_read_bool(pdev->dev.of_node,
+						"fsl,continuous-burst-clk")) {
+				if (devtype->wcr_cont_bclk) {
+					reg |= devtype->wcr_cont_bclk;
+				} else {
+					dev_err(&pdev->dev,
+						"continuous burst clk not supported.\n");
+					return -EINVAL;
+				}
+			}
+
+			writel(reg, base + devtype->wcr_offset);
 		} else {
 			dev_err(&pdev->dev, "burst clk mode not supported.\n");
 			return -EINVAL;

drivers/bus/tegra-gmi.c

@@ -13,8 +13,11 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
+#include <soc/tegra/common.h>
+
 #define TEGRA_GMI_CONFIG		0x00
 #define TEGRA_GMI_CONFIG_GO		BIT(31)
 #define TEGRA_GMI_BUS_WIDTH_32BIT	BIT(30)
@@ -54,9 +57,10 @@ static int tegra_gmi_enable(struct tegra_gmi *gmi)
 {
 	int err;
 
-	err = clk_prepare_enable(gmi->clk);
+	pm_runtime_enable(gmi->dev);
-	if (err < 0) {
+	err = pm_runtime_resume_and_get(gmi->dev);
-		dev_err(gmi->dev, "failed to enable clock: %d\n", err);
+	if (err) {
+		pm_runtime_disable(gmi->dev);
 		return err;
 	}
 
@@ -83,7 +87,9 @@ static void tegra_gmi_disable(struct tegra_gmi *gmi)
 	writel(config, gmi->base + TEGRA_GMI_CONFIG);
 
 	reset_control_assert(gmi->rst);
-	clk_disable_unprepare(gmi->clk);
+
+	pm_runtime_put_sync_suspend(gmi->dev);
+	pm_runtime_force_suspend(gmi->dev);
 }
 
 static int tegra_gmi_parse_dt(struct tegra_gmi *gmi)
@@ -213,6 +219,7 @@ static int tegra_gmi_probe(struct platform_device *pdev)
 	if (!gmi)
 		return -ENOMEM;
 
+	platform_set_drvdata(pdev, gmi);
 	gmi->dev = dev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -232,6 +239,10 @@ static int tegra_gmi_probe(struct platform_device *pdev)
 		return PTR_ERR(gmi->rst);
 	}
 
+	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
+	if (err)
+		return err;
+
 	err = tegra_gmi_parse_dt(gmi);
 	if (err)
 		return err;
@@ -247,8 +258,6 @@ static int tegra_gmi_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	platform_set_drvdata(pdev, gmi);
-
 	return 0;
 }
 
@@ -262,6 +271,34 @@ static int tegra_gmi_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static int __maybe_unused tegra_gmi_runtime_resume(struct device *dev)
+{
+	struct tegra_gmi *gmi = dev_get_drvdata(dev);
+	int err;
+
+	err = clk_prepare_enable(gmi->clk);
+	if (err < 0) {
+		dev_err(gmi->dev, "failed to enable clock: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused tegra_gmi_runtime_suspend(struct device *dev)
+{
+	struct tegra_gmi *gmi = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(gmi->clk);
+
+	return 0;
+}
+
+static const struct dev_pm_ops tegra_gmi_pm = {
+	SET_RUNTIME_PM_OPS(tegra_gmi_runtime_suspend, tegra_gmi_runtime_resume,
+			   NULL)
+};
+
 static const struct of_device_id tegra_gmi_id_table[] = {
 	{ .compatible = "nvidia,tegra20-gmi", },
 	{ .compatible = "nvidia,tegra30-gmi", },
@@ -275,6 +312,7 @@ static struct platform_driver tegra_gmi_driver = {
 	.driver = {
 		.name		= "tegra-gmi",
 		.of_match_table	= tegra_gmi_id_table,
+		.pm = &tegra_gmi_pm,
 	},
 };
 module_platform_driver(tegra_gmi_driver);

drivers/firmware/ti_sci.c

@@ -1759,7 +1759,7 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
 		desc->num = resp->range_num;
 		desc->start_sec = resp->range_start_sec;
 		desc->num_sec = resp->range_num_sec;
-	};
+	}
 
 fail:
 	ti_sci_put_one_xfer(&info->minfo, xfer);

drivers/firmware/xilinx/zynqmp.c

@@ -1434,7 +1434,10 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
 		return ret;
 
 	/* Check PM API version number */
-	zynqmp_pm_get_api_version(&pm_api_version);
+	ret = zynqmp_pm_get_api_version(&pm_api_version);
+	if (ret)
+		return ret;
+
 	if (pm_api_version < ZYNQMP_PM_VERSION) {
 		panic("%s Platform Management API version error. Expected: v%d.%d - Found: v%d.%d\n",
 		      __func__,

drivers/memory/renesas-rpc-if.c

@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
@@ -19,19 +20,17 @@
 
 #define RPCIF_CMNCR		0x0000	/* R/W */
 #define RPCIF_CMNCR_MD		BIT(31)
-#define RPCIF_CMNCR_SFDE	BIT(24) /* undocumented but must be set */
 #define RPCIF_CMNCR_MOIIO3(val)	(((val) & 0x3) << 22)
 #define RPCIF_CMNCR_MOIIO2(val)	(((val) & 0x3) << 20)
 #define RPCIF_CMNCR_MOIIO1(val)	(((val) & 0x3) << 18)
 #define RPCIF_CMNCR_MOIIO0(val)	(((val) & 0x3) << 16)
-#define RPCIF_CMNCR_MOIIO_HIZ	(RPCIF_CMNCR_MOIIO0(3) | \
+#define RPCIF_CMNCR_MOIIO(val)	(RPCIF_CMNCR_MOIIO0(val) | RPCIF_CMNCR_MOIIO1(val) | \
-				 RPCIF_CMNCR_MOIIO1(3) | \
+				 RPCIF_CMNCR_MOIIO2(val) | RPCIF_CMNCR_MOIIO3(val))
-				 RPCIF_CMNCR_MOIIO2(3) | RPCIF_CMNCR_MOIIO3(3))
+#define RPCIF_CMNCR_IO3FV(val)	(((val) & 0x3) << 14) /* documented for RZ/G2L */
-#define RPCIF_CMNCR_IO3FV(val)	(((val) & 0x3) << 14) /* undocumented */
+#define RPCIF_CMNCR_IO2FV(val)	(((val) & 0x3) << 12) /* documented for RZ/G2L */
-#define RPCIF_CMNCR_IO2FV(val)	(((val) & 0x3) << 12) /* undocumented */
 #define RPCIF_CMNCR_IO0FV(val)	(((val) & 0x3) << 8)
-#define RPCIF_CMNCR_IOFV_HIZ	(RPCIF_CMNCR_IO0FV(3) | RPCIF_CMNCR_IO2FV(3) | \
+#define RPCIF_CMNCR_IOFV(val)	(RPCIF_CMNCR_IO0FV(val) | RPCIF_CMNCR_IO2FV(val) | \
-				 RPCIF_CMNCR_IO3FV(3))
+				 RPCIF_CMNCR_IO3FV(val))
 #define RPCIF_CMNCR_BSZ(val)	(((val) & 0x3) << 0)
 
 #define RPCIF_SSLDR		0x0004	/* R/W */
@@ -126,6 +125,9 @@
 #define RPCIF_SMDRENR_OPDRE	BIT(4)
 #define RPCIF_SMDRENR_SPIDRE	BIT(0)
 
+#define RPCIF_PHYADD		0x0070	/* R/W available on R-Car E3/D3/V3M and RZ/G2{E,L} */
+#define RPCIF_PHYWR		0x0074	/* R/W available on R-Car E3/D3/V3M and RZ/G2{E,L} */
+
 #define RPCIF_PHYCNT		0x007C	/* R/W */
 #define RPCIF_PHYCNT_CAL	BIT(31)
 #define RPCIF_PHYCNT_OCTA(v)	(((v) & 0x3) << 22)
@@ -133,10 +135,12 @@
 #define RPCIF_PHYCNT_OCT	BIT(20)
 #define RPCIF_PHYCNT_DDRCAL	BIT(19)
 #define RPCIF_PHYCNT_HS		BIT(18)
-#define RPCIF_PHYCNT_STRTIM(v)	(((v) & 0x7) << 15)
+#define RPCIF_PHYCNT_CKSEL(v)	(((v) & 0x3) << 16) /* valid only for RZ/G2L */
+#define RPCIF_PHYCNT_STRTIM(v)	(((v) & 0x7) << 15) /* valid for R-Car and RZ/G2{E,H,M,N} */
 #define RPCIF_PHYCNT_WBUF2	BIT(4)
 #define RPCIF_PHYCNT_WBUF	BIT(2)
 #define RPCIF_PHYCNT_PHYMEM(v)	(((v) & 0x3) << 0)
+#define RPCIF_PHYCNT_PHYMEM_MASK GENMASK(1, 0)
 
 #define RPCIF_PHYOFFSET1	0x0080	/* R/W */
 #define RPCIF_PHYOFFSET1_DDRTMG(v) (((v) & 0x3) << 28)
@@ -147,8 +151,6 @@
 #define RPCIF_PHYINT		0x0088	/* R/W */
 #define RPCIF_PHYINT_WPVAL	BIT(1)
 
-#define RPCIF_DIRMAP_SIZE	0x4000000
-
 static const struct regmap_range rpcif_volatile_ranges[] = {
 	regmap_reg_range(RPCIF_SMRDR0, RPCIF_SMRDR1),
 	regmap_reg_range(RPCIF_SMWDR0, RPCIF_SMWDR1),
@@ -243,50 +245,74 @@ int rpcif_sw_init(struct rpcif *rpc, struct device *dev)
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dirmap");
 	rpc->dirmap = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(rpc->dirmap))
-		rpc->dirmap = NULL;
+		return PTR_ERR(rpc->dirmap);
 	rpc->size = resource_size(res);
 
+	rpc->type = (uintptr_t)of_device_get_match_data(dev);
 	rpc->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 
 	return PTR_ERR_OR_ZERO(rpc->rstc);
 }
 EXPORT_SYMBOL(rpcif_sw_init);
 
-void rpcif_hw_init(struct rpcif *rpc, bool hyperflash)
+static void rpcif_rzg2l_timing_adjust_sdr(struct rpcif *rpc)
+{
+	regmap_write(rpc->regmap, RPCIF_PHYWR, 0xa5390000);
+	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000000);
+	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00008080);
+	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000022);
+	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00008080);
+	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000024);
+	regmap_update_bits(rpc->regmap, RPCIF_PHYCNT, RPCIF_PHYCNT_CKSEL(3),
+			   RPCIF_PHYCNT_CKSEL(3));
+	regmap_write(rpc->regmap, RPCIF_PHYWR, 0x00000030);
+	regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000032);
+}
+
+int rpcif_hw_init(struct rpcif *rpc, bool hyperflash)
 {
 	u32 dummy;
 
 	pm_runtime_get_sync(rpc->dev);
 
-	/*
+	if (rpc->type == RPCIF_RZ_G2L) {
-	 * NOTE: The 0x260 are undocumented bits, but they must be set.
+		int ret;
-	 *	 RPCIF_PHYCNT_STRTIM is strobe timing adjustment bits,
-	 *	 0x0 : the delay is biggest,
-	 *	 0x1 : the delay is 2nd biggest,
-	 *	 On H3 ES1.x, the value should be 0, while on others,
-	 *	 the value should be 7.
-	 */
-	regmap_write(rpc->regmap, RPCIF_PHYCNT, RPCIF_PHYCNT_STRTIM(7) |
-		     RPCIF_PHYCNT_PHYMEM(hyperflash ? 3 : 0) | 0x260);
 
-	/*
+		ret = reset_control_reset(rpc->rstc);
-	 * NOTE: The 0x1511144 are undocumented bits, but they must be set
+		if (ret)
-	 *       for RPCIF_PHYOFFSET1.
+			return ret;
-	 *	 The 0x31 are undocumented bits, but they must be set
+		usleep_range(200, 300);
-	 *	 for RPCIF_PHYOFFSET2.
+		rpcif_rzg2l_timing_adjust_sdr(rpc);
-	 */
+	}
-	regmap_write(rpc->regmap, RPCIF_PHYOFFSET1, 0x1511144 |
+
+	regmap_update_bits(rpc->regmap, RPCIF_PHYCNT, RPCIF_PHYCNT_PHYMEM_MASK,
+			   RPCIF_PHYCNT_PHYMEM(hyperflash ? 3 : 0));
+
+	if (rpc->type == RPCIF_RCAR_GEN3)
+		regmap_update_bits(rpc->regmap, RPCIF_PHYCNT,
+				   RPCIF_PHYCNT_STRTIM(7), RPCIF_PHYCNT_STRTIM(7));
+
+	regmap_update_bits(rpc->regmap, RPCIF_PHYOFFSET1, RPCIF_PHYOFFSET1_DDRTMG(3),
 			   RPCIF_PHYOFFSET1_DDRTMG(3));
-	regmap_write(rpc->regmap, RPCIF_PHYOFFSET2, 0x31 |
+	regmap_update_bits(rpc->regmap, RPCIF_PHYOFFSET2, RPCIF_PHYOFFSET2_OCTTMG(7),
 			   RPCIF_PHYOFFSET2_OCTTMG(4));
 
 	if (hyperflash)
 		regmap_update_bits(rpc->regmap, RPCIF_PHYINT,
 				   RPCIF_PHYINT_WPVAL, 0);
 
-	regmap_write(rpc->regmap, RPCIF_CMNCR, RPCIF_CMNCR_SFDE |
+	if (rpc->type == RPCIF_RCAR_GEN3)
-		     RPCIF_CMNCR_MOIIO_HIZ | RPCIF_CMNCR_IOFV_HIZ |
+		regmap_update_bits(rpc->regmap, RPCIF_CMNCR,
+				   RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_BSZ(3),
+				   RPCIF_CMNCR_MOIIO(3) |
 				   RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0));
+	else
+		regmap_update_bits(rpc->regmap, RPCIF_CMNCR,
+				   RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_IOFV(3) |
+				   RPCIF_CMNCR_BSZ(3),
+				   RPCIF_CMNCR_MOIIO(1) | RPCIF_CMNCR_IOFV(2) |
+				   RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0));
+
 	/* Set RCF after BSZ update */
 	regmap_write(rpc->regmap, RPCIF_DRCR, RPCIF_DRCR_RCF);
 	/* Dummy read according to spec */
@@ -297,6 +323,8 @@ void rpcif_hw_init(struct rpcif *rpc, bool hyperflash)
 	pm_runtime_put(rpc->dev);
 
 	rpc->bus_size = hyperflash ? 2 : 1;
+
+	return 0;
 }
 EXPORT_SYMBOL(rpcif_hw_init);
 
@@ -588,8 +616,8 @@ static void memcpy_fromio_readw(void *to,
 
 ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf)
 {
-	loff_t from = offs & (RPCIF_DIRMAP_SIZE - 1);
+	loff_t from = offs & (rpc->size - 1);
-	size_t size = RPCIF_DIRMAP_SIZE - from;
+	size_t size = rpc->size - from;
 
 	if (len > size)
 		len = size;
@@ -659,7 +687,8 @@ static int rpcif_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id rpcif_of_match[] = {
-	{ .compatible = "renesas,rcar-gen3-rpc-if", },
+	{ .compatible = "renesas,rcar-gen3-rpc-if", .data = (void *)RPCIF_RCAR_GEN3 },
+	{ .compatible = "renesas,rzg2l-rpc-if", .data = (void *)RPCIF_RZ_G2L },
 	{},
 };
 MODULE_DEVICE_TABLE(of, rpcif_of_match);

drivers/mmc/host/sdhci-tegra.c

@@ -15,6 +15,8 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/pm_opp.h>
+#include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 #include <linux/mmc/card.h>
@@ -24,6 +26,8 @@
 #include <linux/gpio/consumer.h>
 #include <linux/ktime.h>
 
+#include <soc/tegra/common.h>
+
 #include "sdhci-pltfm.h"
 #include "cqhci.h"
 
@@ -743,7 +747,9 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
+	struct device *dev = mmc_dev(host->mmc);
 	unsigned long host_clk;
+	int err;
 
 	if (!clock)
 		return sdhci_set_clock(host, clock);
@@ -761,7 +767,12 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 	 * from clk_get_rate() is used.
 	 */
 	host_clk = tegra_host->ddr_signaling ? clock * 2 : clock;
-	clk_set_rate(pltfm_host->clk, host_clk);
+
+	err = dev_pm_opp_set_rate(dev, host_clk);
+	if (err)
+		dev_err(dev, "failed to set clk rate to %luHz: %d\n",
+			host_clk, err);
+
 	tegra_host->curr_clk_rate = host_clk;
 	if (tegra_host->ddr_signaling)
 		host->max_clk = host_clk;
@@ -1714,7 +1725,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 				   "failed to get clock\n");
 		goto err_clk_get;
 	}
-	clk_prepare_enable(clk);
 	pltfm_host->clk = clk;
 
 	tegra_host->rst = devm_reset_control_get_exclusive(&pdev->dev,
@@ -1725,15 +1735,24 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 		goto err_rst_get;
 	}
 
-	rc = reset_control_assert(tegra_host->rst);
+	rc = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
 	if (rc)
 		goto err_rst_get;
 
+	pm_runtime_enable(&pdev->dev);
+	rc = pm_runtime_resume_and_get(&pdev->dev);
+	if (rc)
+		goto err_pm_get;
+
+	rc = reset_control_assert(tegra_host->rst);
+	if (rc)
+		goto err_rst_assert;
+
 	usleep_range(2000, 4000);
 
 	rc = reset_control_deassert(tegra_host->rst);
 	if (rc)
-		goto err_rst_get;
+		goto err_rst_assert;
 
 	usleep_range(2000, 4000);
 
@@ -1745,8 +1764,11 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 
 err_add_host:
 	reset_control_assert(tegra_host->rst);
+err_rst_assert:
+	pm_runtime_put_sync_suspend(&pdev->dev);
+err_pm_get:
+	pm_runtime_disable(&pdev->dev);
 err_rst_get:
-	clk_disable_unprepare(pltfm_host->clk);
 err_clk_get:
 	clk_disable_unprepare(tegra_host->tmclk);
 err_power_req:
@@ -1765,19 +1787,38 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
 
 	reset_control_assert(tegra_host->rst);
 	usleep_range(2000, 4000);
-	clk_disable_unprepare(pltfm_host->clk);
-	clk_disable_unprepare(tegra_host->tmclk);
 
+	pm_runtime_put_sync_suspend(&pdev->dev);
+	pm_runtime_force_suspend(&pdev->dev);
+
+	clk_disable_unprepare(tegra_host->tmclk);
 	sdhci_pltfm_free(pdev);
 
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused sdhci_tegra_runtime_suspend(struct device *dev)
-static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	clk_disable_unprepare(pltfm_host->clk);
+
+	return 0;
+}
+
+static int __maybe_unused sdhci_tegra_runtime_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	return clk_prepare_enable(pltfm_host->clk);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_tegra_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
 	int ret;
 
 	if (host->mmc->caps2 & MMC_CAP2_CQE) {
@@ -1792,17 +1833,22 @@ static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
 		return ret;
 	}
 
-	clk_disable_unprepare(pltfm_host->clk);
+	ret = pm_runtime_force_suspend(dev);
+	if (ret) {
+		sdhci_resume_host(host);
+		cqhci_resume(host->mmc);
+		return ret;
+	}
+
 	return 0;
 }
 
-static int __maybe_unused sdhci_tegra_resume(struct device *dev)
+static int sdhci_tegra_resume(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	int ret;
 
-	ret = clk_prepare_enable(pltfm_host->clk);
+	ret = pm_runtime_force_resume(dev);
 	if (ret)
 		return ret;
 
@@ -1821,13 +1867,16 @@ static int __maybe_unused sdhci_tegra_resume(struct device *dev)
 suspend_host:
 	sdhci_suspend_host(host);
 disable_clk:
-	clk_disable_unprepare(pltfm_host->clk);
+	pm_runtime_force_suspend(dev);
 	return ret;
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+static const struct dev_pm_ops sdhci_tegra_dev_pm_ops = {
-			 sdhci_tegra_resume);
+	SET_RUNTIME_PM_OPS(sdhci_tegra_runtime_suspend, sdhci_tegra_runtime_resume,
+			   NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_tegra_suspend, sdhci_tegra_resume)
+};
 
 static struct platform_driver sdhci_tegra_driver = {
 	.driver		= {

drivers/mtd/hyperbus/rpc-if.c

@@ -130,7 +130,9 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 
 	rpcif_enable_rpm(&hyperbus->rpc);
 
-	rpcif_hw_init(&hyperbus->rpc, true);
+	error = rpcif_hw_init(&hyperbus->rpc, true);
+	if (error)
+		return error;
 
 	hyperbus->hbdev.map.size = hyperbus->rpc.size;
 	hyperbus->hbdev.map.virt = hyperbus->rpc.dirmap;

drivers/mtd/nand/raw/tegra_nand.c

@@ -17,8 +17,11 @@
 #include <linux/mtd/rawnand.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
+#include <soc/tegra/common.h>
+
 #define COMMAND					0x00
 #define   COMMAND_GO				BIT(31)
 #define   COMMAND_CLE				BIT(30)
@@ -1151,6 +1154,7 @@ static int tegra_nand_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	ctrl->dev = &pdev->dev;
+	platform_set_drvdata(pdev, ctrl);
 	nand_controller_init(&ctrl->controller);
 	ctrl->controller.ops = &tegra_nand_controller_ops;
 
@@ -1166,14 +1170,23 @@ static int tegra_nand_probe(struct platform_device *pdev)
 	if (IS_ERR(ctrl->clk))
 		return PTR_ERR(ctrl->clk);
 
-	err = clk_prepare_enable(ctrl->clk);
+	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
+	if (err)
+		return err;
+
+	/*
+	 * This driver doesn't support active power management yet,
+	 * so we will simply keep device resumed.
+	 */
+	pm_runtime_enable(&pdev->dev);
+	err = pm_runtime_resume_and_get(&pdev->dev);
 	if (err)
 		return err;
 
 	err = reset_control_reset(rst);
 	if (err) {
 		dev_err(ctrl->dev, "Failed to reset HW: %d\n", err);
-		goto err_disable_clk;
+		goto err_put_pm;
 	}
 
 	writel_relaxed(HWSTATUS_CMD_DEFAULT, ctrl->regs + HWSTATUS_CMD);
@@ -1188,21 +1201,20 @@ static int tegra_nand_probe(struct platform_device *pdev)
 			       dev_name(&pdev->dev), ctrl);
 	if (err) {
 		dev_err(ctrl->dev, "Failed to get IRQ: %d\n", err);
-		goto err_disable_clk;
+		goto err_put_pm;
 	}
 
 	writel_relaxed(DMA_MST_CTRL_IS_DONE, ctrl->regs + DMA_MST_CTRL);
 
 	err = tegra_nand_chips_init(ctrl->dev, ctrl);
 	if (err)
-		goto err_disable_clk;
+		goto err_put_pm;
-
-	platform_set_drvdata(pdev, ctrl);
 
 	return 0;
 
-err_disable_clk:
+err_put_pm:
-	clk_disable_unprepare(ctrl->clk);
+	pm_runtime_put_sync_suspend(ctrl->dev);
+	pm_runtime_force_suspend(ctrl->dev);
 	return err;
 }
 
@@ -1219,11 +1231,40 @@ static int tegra_nand_remove(struct platform_device *pdev)
 
 	nand_cleanup(chip);
 
+	pm_runtime_put_sync_suspend(ctrl->dev);
+	pm_runtime_force_suspend(ctrl->dev);
+
+	return 0;
+}
+
+static int __maybe_unused tegra_nand_runtime_resume(struct device *dev)
+{
+	struct tegra_nand_controller *ctrl = dev_get_drvdata(dev);
+	int err;
+
+	err = clk_prepare_enable(ctrl->clk);
+	if (err) {
+		dev_err(dev, "Failed to enable clock: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused tegra_nand_runtime_suspend(struct device *dev)
+{
+	struct tegra_nand_controller *ctrl = dev_get_drvdata(dev);
+
 	clk_disable_unprepare(ctrl->clk);
 
 	return 0;
 }
 
+static const struct dev_pm_ops tegra_nand_pm = {
+	SET_RUNTIME_PM_OPS(tegra_nand_runtime_suspend, tegra_nand_runtime_resume,
+			   NULL)
+};
+
 static const struct of_device_id tegra_nand_of_match[] = {
 	{ .compatible = "nvidia,tegra20-nand" },
 	{ /* sentinel */ }
@@ -1234,6 +1275,7 @@ static struct platform_driver tegra_nand_driver = {
 	.driver = {
 		.name = "tegra-nand",
 		.of_match_table = tegra_nand_of_match,
+		.pm = &tegra_nand_pm,
 	},
 	.probe = tegra_nand_probe,
 	.remove = tegra_nand_remove,

drivers/pwm/pwm-tegra.c

@@ -42,12 +42,16 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/pm_opp.h>
 #include <linux/pwm.h>
 #include <linux/platform_device.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <linux/reset.h>
 
+#include <soc/tegra/common.h>
+
 #define PWM_ENABLE	(1 << 31)
 #define PWM_DUTY_WIDTH	8
 #define PWM_DUTY_SHIFT	16
@@ -145,7 +149,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 		required_clk_rate =
 			(NSEC_PER_SEC / period_ns) << PWM_DUTY_WIDTH;
 
-		err = clk_set_rate(pc->clk, required_clk_rate);
+		err = dev_pm_opp_set_rate(pc->dev, required_clk_rate);
 		if (err < 0)
 			return -EINVAL;
 
@@ -181,8 +185,8 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 	 * before writing the register. Otherwise, keep it enabled.
 	 */
 	if (!pwm_is_enabled(pwm)) {
-		err = clk_prepare_enable(pc->clk);
+		err = pm_runtime_resume_and_get(pc->dev);
-		if (err < 0)
+		if (err)
 			return err;
 	} else
 		val |= PWM_ENABLE;
@@ -193,7 +197,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 	 * If the PWM is not enabled, turn the clock off again to save power.
 	 */
 	if (!pwm_is_enabled(pwm))
-		clk_disable_unprepare(pc->clk);
+		pm_runtime_put(pc->dev);
 
 	return 0;
 }
@@ -204,8 +208,8 @@ static int tegra_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 	int rc = 0;
 	u32 val;
 
-	rc = clk_prepare_enable(pc->clk);
+	rc = pm_runtime_resume_and_get(pc->dev);
-	if (rc < 0)
+	if (rc)
 		return rc;
 
 	val = pwm_readl(pc, pwm->hwpwm);
@@ -224,7 +228,7 @@ static void tegra_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 	val &= ~PWM_ENABLE;
 	pwm_writel(pc, pwm->hwpwm, val);
 
-	clk_disable_unprepare(pc->clk);
+	pm_runtime_put_sync(pc->dev);
 }
 
 static const struct pwm_ops tegra_pwm_ops = {
@@ -256,11 +260,20 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(pwm->clk))
 		return PTR_ERR(pwm->clk);
 
+	ret = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_enable(&pdev->dev);
+	ret = pm_runtime_resume_and_get(&pdev->dev);
+	if (ret)
+		return ret;
+
 	/* Set maximum frequency of the IP */
-	ret = clk_set_rate(pwm->clk, pwm->soc->max_frequency);
+	ret = dev_pm_opp_set_rate(pwm->dev, pwm->soc->max_frequency);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to set max frequency: %d\n", ret);
-		return ret;
+		goto put_pm;
 	}
 
 	/*
@@ -278,7 +291,7 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(pwm->rst)) {
 		ret = PTR_ERR(pwm->rst);
 		dev_err(&pdev->dev, "Reset control is not found: %d\n", ret);
-		return ret;
+		goto put_pm;
 	}
 
 	reset_control_deassert(pwm->rst);
@@ -291,10 +304,16 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
 		reset_control_assert(pwm->rst);
-		return ret;
+		goto put_pm;
 	}
 
+	pm_runtime_put(&pdev->dev);
+
 	return 0;
+put_pm:
+	pm_runtime_put_sync_suspend(&pdev->dev);
+	pm_runtime_force_suspend(&pdev->dev);
+	return ret;
 }
 
 static int tegra_pwm_remove(struct platform_device *pdev)
@@ -305,20 +324,44 @@ static int tegra_pwm_remove(struct platform_device *pdev)
 
 	reset_control_assert(pc->rst);
 
+	pm_runtime_force_suspend(&pdev->dev);
+
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused tegra_pwm_runtime_suspend(struct device *dev)
-static int tegra_pwm_suspend(struct device *dev)
 {
-	return pinctrl_pm_select_sleep_state(dev);
+	struct tegra_pwm_chip *pc = dev_get_drvdata(dev);
+	int err;
+
+	clk_disable_unprepare(pc->clk);
+
+	err = pinctrl_pm_select_sleep_state(dev);
+	if (err) {
+		clk_prepare_enable(pc->clk);
+		return err;
+	}
+
+	return 0;
 }
 
-static int tegra_pwm_resume(struct device *dev)
+static int __maybe_unused tegra_pwm_runtime_resume(struct device *dev)
 {
-	return pinctrl_pm_select_default_state(dev);
+	struct tegra_pwm_chip *pc = dev_get_drvdata(dev);
+	int err;
+
+	err = pinctrl_pm_select_default_state(dev);
+	if (err)
+		return err;
+
+	err = clk_prepare_enable(pc->clk);
+	if (err) {
+		pinctrl_pm_select_sleep_state(dev);
+		return err;
+	}
+
+	return 0;
 }
-#endif
 
 static const struct tegra_pwm_soc tegra20_pwm_soc = {
 	.num_channels = 4,
@@ -344,7 +387,10 @@ static const struct of_device_id tegra_pwm_of_match[] = {
 MODULE_DEVICE_TABLE(of, tegra_pwm_of_match);
 
 static const struct dev_pm_ops tegra_pwm_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(tegra_pwm_suspend, tegra_pwm_resume)
+	SET_RUNTIME_PM_OPS(tegra_pwm_runtime_suspend, tegra_pwm_runtime_resume,
+			   NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
 };
 
 static struct platform_driver tegra_pwm_driver = {

drivers/soc/Kconfig

@@ -3,6 +3,7 @@ menu "SOC (System On Chip) specific Drivers"
 
 source "drivers/soc/actions/Kconfig"
 source "drivers/soc/amlogic/Kconfig"
+source "drivers/soc/apple/Kconfig"
 source "drivers/soc/aspeed/Kconfig"
 source "drivers/soc/atmel/Kconfig"
 source "drivers/soc/bcm/Kconfig"

drivers/soc/Makefile

@@ -4,6 +4,7 @@
 #
 
 obj-$(CONFIG_ARCH_ACTIONS)	+= actions/
+obj-$(CONFIG_ARCH_APPLE)	+= apple/
 obj-y				+= aspeed/
 obj-$(CONFIG_ARCH_AT91)		+= atmel/
 obj-y				+= bcm/

drivers/soc/apple/Kconfig

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+if ARCH_APPLE || COMPILE_TEST
+
+menu "Apple SoC drivers"
+
+config APPLE_PMGR_PWRSTATE
+	bool "Apple SoC PMGR power state control"
+	depends on PM
+	select REGMAP
+	select MFD_SYSCON
+	select PM_GENERIC_DOMAINS
+	select RESET_CONTROLLER
+	default ARCH_APPLE
+	help
+	  The PMGR block in Apple SoCs provides high-level power state
+	  controls for SoC devices. This driver manages them through the
+	  generic power domain framework, and also provides reset support.
+
+endmenu
+
+endif

drivers/soc/apple/Makefile

@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_APPLE_PMGR_PWRSTATE)	+= apple-pmgr-pwrstate.o

drivers/soc/apple/apple-pmgr-pwrstate.c

@@ -0,0 +1,324 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Apple SoC PMGR device power state driver
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <linux/reset-controller.h>
+#include <linux/module.h>
+
+#define APPLE_PMGR_RESET        BIT(31)
+#define APPLE_PMGR_AUTO_ENABLE  BIT(28)
+#define APPLE_PMGR_PS_AUTO      GENMASK(27, 24)
+#define APPLE_PMGR_PS_MIN       GENMASK(19, 16)
+#define APPLE_PMGR_PARENT_OFF   BIT(11)
+#define APPLE_PMGR_DEV_DISABLE  BIT(10)
+#define APPLE_PMGR_WAS_CLKGATED BIT(9)
+#define APPLE_PMGR_WAS_PWRGATED BIT(8)
+#define APPLE_PMGR_PS_ACTUAL    GENMASK(7, 4)
+#define APPLE_PMGR_PS_TARGET    GENMASK(3, 0)
+
+#define APPLE_PMGR_FLAGS        (APPLE_PMGR_WAS_CLKGATED | APPLE_PMGR_WAS_PWRGATED)
+
+#define APPLE_PMGR_PS_ACTIVE    0xf
+#define APPLE_PMGR_PS_CLKGATE   0x4
+#define APPLE_PMGR_PS_PWRGATE   0x0
+
+#define APPLE_PMGR_PS_SET_TIMEOUT 100
+#define APPLE_PMGR_RESET_TIME 1
+
+struct apple_pmgr_ps {
+	struct device *dev;
+	struct generic_pm_domain genpd;
+	struct reset_controller_dev rcdev;
+	struct regmap *regmap;
+	u32 offset;
+	u32 min_state;
+};
+
+#define genpd_to_apple_pmgr_ps(_genpd) container_of(_genpd, struct apple_pmgr_ps, genpd)
+#define rcdev_to_apple_pmgr_ps(_rcdev) container_of(_rcdev, struct apple_pmgr_ps, rcdev)
+
+static int apple_pmgr_ps_set(struct generic_pm_domain *genpd, u32 pstate, bool auto_enable)
+{
+	int ret;
+	struct apple_pmgr_ps *ps = genpd_to_apple_pmgr_ps(genpd);
+	u32 reg;
+
+	ret = regmap_read(ps->regmap, ps->offset, &reg);
+	if (ret < 0)
+		return ret;
+
+	/* Resets are synchronous, and only work if the device is powered and clocked. */
+	if (reg & APPLE_PMGR_RESET && pstate != APPLE_PMGR_PS_ACTIVE)
+		dev_err(ps->dev, "PS %s: powering off with RESET active\n",
+			genpd->name);
+
+	reg &= ~(APPLE_PMGR_AUTO_ENABLE | APPLE_PMGR_FLAGS | APPLE_PMGR_PS_TARGET);
+	reg |= FIELD_PREP(APPLE_PMGR_PS_TARGET, pstate);
+
+	dev_dbg(ps->dev, "PS %s: pwrstate = 0x%x: 0x%x\n", genpd->name, pstate, reg);
+
+	regmap_write(ps->regmap, ps->offset, reg);
+
+	ret = regmap_read_poll_timeout_atomic(
+		ps->regmap, ps->offset, reg,
+		(FIELD_GET(APPLE_PMGR_PS_ACTUAL, reg) == pstate), 1,
+		APPLE_PMGR_PS_SET_TIMEOUT);
+	if (ret < 0)
+		dev_err(ps->dev, "PS %s: Failed to reach power state 0x%x (now: 0x%x)\n",
+			genpd->name, pstate, reg);
+
+	if (auto_enable) {
+		/* Not all devices implement this; this is a no-op where not implemented. */
+		reg &= ~APPLE_PMGR_FLAGS;
+		reg |= APPLE_PMGR_AUTO_ENABLE;
+		regmap_write(ps->regmap, ps->offset, reg);
+	}
+
+	return ret;
+}
+
+static bool apple_pmgr_ps_is_active(struct apple_pmgr_ps *ps)
+{
+	u32 reg = 0;
+
+	regmap_read(ps->regmap, ps->offset, &reg);
+	/*
+	 * We consider domains as active if they are actually on, or if they have auto-PM
+	 * enabled and the intended target is on.
+	 */
+	return (FIELD_GET(APPLE_PMGR_PS_ACTUAL, reg) == APPLE_PMGR_PS_ACTIVE ||
+		(FIELD_GET(APPLE_PMGR_PS_TARGET, reg) == APPLE_PMGR_PS_ACTIVE &&
+		 reg & APPLE_PMGR_AUTO_ENABLE));
+}
+
+static int apple_pmgr_ps_power_on(struct generic_pm_domain *genpd)
+{
+	return apple_pmgr_ps_set(genpd, APPLE_PMGR_PS_ACTIVE, true);
+}
+
+static int apple_pmgr_ps_power_off(struct generic_pm_domain *genpd)
+{
+	return apple_pmgr_ps_set(genpd, APPLE_PMGR_PS_PWRGATE, false);
+}
+
+static int apple_pmgr_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+
+	mutex_lock(&ps->genpd.mlock);
+
+	if (ps->genpd.status == GENPD_STATE_OFF)
+		dev_err(ps->dev, "PS 0x%x: asserting RESET while powered down\n", ps->offset);
+
+	dev_dbg(ps->dev, "PS 0x%x: assert reset\n", ps->offset);
+	/* Quiesce device before asserting reset */
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_DEV_DISABLE,
+			   APPLE_PMGR_DEV_DISABLE);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_RESET,
+			   APPLE_PMGR_RESET);
+
+	mutex_unlock(&ps->genpd.mlock);
+
+	return 0;
+}
+
+static int apple_pmgr_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+
+	mutex_lock(&ps->genpd.mlock);
+
+	dev_dbg(ps->dev, "PS 0x%x: deassert reset\n", ps->offset);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_RESET, 0);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_DEV_DISABLE, 0);
+
+	if (ps->genpd.status == GENPD_STATE_OFF)
+		dev_err(ps->dev, "PS 0x%x: RESET was deasserted while powered down\n", ps->offset);
+
+	mutex_unlock(&ps->genpd.mlock);
+
+	return 0;
+}
+
+static int apple_pmgr_reset_reset(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	int ret;
+
+	ret = apple_pmgr_reset_assert(rcdev, id);
+	if (ret)
+		return ret;
+
+	usleep_range(APPLE_PMGR_RESET_TIME, 2 * APPLE_PMGR_RESET_TIME);
+
+	return apple_pmgr_reset_deassert(rcdev, id);
+}
+
+static int apple_pmgr_reset_status(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+	u32 reg = 0;
+
+	regmap_read(ps->regmap, ps->offset, &reg);
+
+	return !!(reg & APPLE_PMGR_RESET);
+}
+
+const struct reset_control_ops apple_pmgr_reset_ops = {
+	.assert		= apple_pmgr_reset_assert,
+	.deassert	= apple_pmgr_reset_deassert,
+	.reset		= apple_pmgr_reset_reset,
+	.status		= apple_pmgr_reset_status,
+};
+
+static int apple_pmgr_reset_xlate(struct reset_controller_dev *rcdev,
+				  const struct of_phandle_args *reset_spec)
+{
+	return 0;
+}
+
+static int apple_pmgr_ps_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->of_node;
+	struct apple_pmgr_ps *ps;
+	struct regmap *regmap;
+	struct of_phandle_iterator it;
+	int ret;
+	const char *name;
+	bool active;
+
+	regmap = syscon_node_to_regmap(node->parent);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	ps = devm_kzalloc(dev, sizeof(*ps), GFP_KERNEL);
+	if (!ps)
+		return -ENOMEM;
+
+	ps->dev = dev;
+	ps->regmap = regmap;
+
+	ret = of_property_read_string(node, "label", &name);
+	if (ret < 0) {
+		dev_err(dev, "missing label property\n");
+		return ret;
+	}
+
+	ret = of_property_read_u32(node, "reg", &ps->offset);
+	if (ret < 0) {
+		dev_err(dev, "missing reg property\n");
+		return ret;
+	}
+
+	ps->genpd.name = name;
+	ps->genpd.power_on = apple_pmgr_ps_power_on;
+	ps->genpd.power_off = apple_pmgr_ps_power_off;
+
+	ret = of_property_read_u32(node, "apple,min-state", &ps->min_state);
+	if (ret == 0 && ps->min_state <= APPLE_PMGR_PS_ACTIVE)
+		regmap_update_bits(regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_PS_MIN,
+				   FIELD_PREP(APPLE_PMGR_PS_MIN, ps->min_state));
+
+	active = apple_pmgr_ps_is_active(ps);
+	if (of_property_read_bool(node, "apple,always-on")) {
+		ps->genpd.flags |= GENPD_FLAG_ALWAYS_ON;
+		if (!active) {
+			dev_warn(dev, "always-on domain %s is not on at boot\n", name);
+			/* Turn it on so pm_genpd_init does not fail */
+			active = apple_pmgr_ps_power_on(&ps->genpd) == 0;
+		}
+	}
+
+	/* Turn on auto-PM if the domain is already on */
+	if (active)
+		regmap_update_bits(regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_AUTO_ENABLE,
+				   APPLE_PMGR_AUTO_ENABLE);
+
+	ret = pm_genpd_init(&ps->genpd, NULL, !active);
+	if (ret < 0) {
+		dev_err(dev, "pm_genpd_init failed\n");
+		return ret;
+	}
+
+	ret = of_genpd_add_provider_simple(node, &ps->genpd);
+	if (ret < 0) {
+		dev_err(dev, "of_genpd_add_provider_simple failed\n");
+		return ret;
+	}
+
+	of_for_each_phandle(&it, ret, node, "power-domains", "#power-domain-cells", -1) {
+		struct of_phandle_args parent, child;
+
+		parent.np = it.node;
+		parent.args_count = of_phandle_iterator_args(&it, parent.args, MAX_PHANDLE_ARGS);
+		child.np = node;
+		child.args_count = 0;
+		ret = of_genpd_add_subdomain(&parent, &child);
+
+		if (ret == -EPROBE_DEFER) {
+			of_node_put(parent.np);
+			goto err_remove;
+		} else if (ret < 0) {
+			dev_err(dev, "failed to add to parent domain: %d (%s -> %s)\n",
+				ret, it.node->name, node->name);
+			of_node_put(parent.np);
+			goto err_remove;
+		}
+	}
+
+	/*
+	 * Do not participate in regular PM; parent power domains are handled via the
+	 * genpd hierarchy.
+	 */
+	pm_genpd_remove_device(dev);
+
+	ps->rcdev.owner = THIS_MODULE;
+	ps->rcdev.nr_resets = 1;
+	ps->rcdev.ops = &apple_pmgr_reset_ops;
+	ps->rcdev.of_node = dev->of_node;
+	ps->rcdev.of_reset_n_cells = 0;
+	ps->rcdev.of_xlate = apple_pmgr_reset_xlate;
+
+	ret = devm_reset_controller_register(dev, &ps->rcdev);
+	if (ret < 0)
+		goto err_remove;
+
+	return 0;
+err_remove:
+	of_genpd_del_provider(node);
+	pm_genpd_remove(&ps->genpd);
+	return ret;
+}
+
+static const struct of_device_id apple_pmgr_ps_of_match[] = {
+	{ .compatible = "apple,pmgr-pwrstate" },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, apple_pmgr_ps_of_match);
+
+static struct platform_driver apple_pmgr_ps_driver = {
+	.probe = apple_pmgr_ps_probe,
+	.driver = {
+		.name = "apple-pmgr-pwrstate",
+		.of_match_table = apple_pmgr_ps_of_match,
+	},
+};
+
+MODULE_AUTHOR("Hector Martin <marcan@marcan.st>");
+MODULE_DESCRIPTION("PMGR power state driver for Apple SoCs");
+MODULE_LICENSE("GPL v2");
+
+module_platform_driver(apple_pmgr_ps_driver);

drivers/soc/imx/gpcv2.c

@@ -377,7 +377,7 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd)
 		}
 	}
 
-	pm_runtime_put(domain->dev);
+	pm_runtime_put_sync_suspend(domain->dev);
 
 	return 0;
 
@@ -734,6 +734,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
 			.map = IMX8MM_VPUH1_A53_DOMAIN,
 		},
 		.pgc   = BIT(IMX8MM_PGC_VPUH1),
+		.keep_clocks = true,
 	},
 
 	[IMX8MM_POWER_DOMAIN_DISPMIX] = {
@@ -840,6 +841,32 @@ static const struct imx_pgc_domain imx8mn_pgc_domains[] = {
 			.hskack = IMX8MN_GPUMIX_HSK_PWRDNACKN,
 		},
 		.pgc   = BIT(IMX8MN_PGC_GPUMIX),
+		.keep_clocks = true,
+	},
+
+	[IMX8MN_POWER_DOMAIN_DISPMIX] = {
+		.genpd = {
+			.name = "dispmix",
+		},
+			.bits  = {
+			.pxx = IMX8MN_DISPMIX_SW_Pxx_REQ,
+			.map = IMX8MN_DISPMIX_A53_DOMAIN,
+			.hskreq = IMX8MN_DISPMIX_HSK_PWRDNREQN,
+			.hskack = IMX8MN_DISPMIX_HSK_PWRDNACKN,
+		},
+		.pgc   = BIT(IMX8MN_PGC_DISPMIX),
+		.keep_clocks = true,
+	},
+
+	[IMX8MN_POWER_DOMAIN_MIPI] = {
+		.genpd = {
+			.name = "mipi",
+		},
+			.bits  = {
+			.pxx = IMX8MN_MIPI_SW_Pxx_REQ,
+			.map = IMX8MN_MIPI_A53_DOMAIN,
+		},
+		.pgc   = BIT(IMX8MN_PGC_MIPI),
 	},
 };
 

drivers/soc/imx/imx8m-blk-ctrl.c

@@ -14,6 +14,7 @@
 #include <linux/clk.h>
 
 #include <dt-bindings/power/imx8mm-power.h>
+#include <dt-bindings/power/imx8mn-power.h>
 
 #define BLK_SFT_RSTN	0x0
 #define BLK_CLK_EN	0x4
@@ -517,6 +518,77 @@ static const struct imx8m_blk_ctrl_data imx8mm_disp_blk_ctl_dev_data = {
 	.num_domains = ARRAY_SIZE(imx8mm_disp_blk_ctl_domain_data),
 };
 
+
+static int imx8mn_disp_power_notifier(struct notifier_block *nb,
+				      unsigned long action, void *data)
+{
+	struct imx8m_blk_ctrl *bc = container_of(nb, struct imx8m_blk_ctrl,
+						 power_nb);
+
+	if (action != GENPD_NOTIFY_ON && action != GENPD_NOTIFY_PRE_OFF)
+		return NOTIFY_OK;
+
+	/* Enable bus clock and deassert bus reset */
+	regmap_set_bits(bc->regmap, BLK_CLK_EN, BIT(8));
+	regmap_set_bits(bc->regmap, BLK_SFT_RSTN, BIT(8));
+
+	/*
+	 * On power up we have no software backchannel to the GPC to
+	 * wait for the ADB handshake to happen, so we just delay for a
+	 * bit. On power down the GPC driver waits for the handshake.
+	 */
+	if (action == GENPD_NOTIFY_ON)
+		udelay(5);
+
+
+	return NOTIFY_OK;
+}
+
+static const struct imx8m_blk_ctrl_domain_data imx8mn_disp_blk_ctl_domain_data[] = {
+	[IMX8MN_DISPBLK_PD_MIPI_DSI] = {
+		.name = "dispblk-mipi-dsi",
+		.clk_names = (const char *[]){ "dsi-pclk", "dsi-ref", },
+		.num_clks = 2,
+		.gpc_name = "mipi-dsi",
+		.rst_mask = BIT(0) | BIT(1),
+		.clk_mask = BIT(0) | BIT(1),
+		.mipi_phy_rst_mask = BIT(17),
+	},
+	[IMX8MN_DISPBLK_PD_MIPI_CSI] = {
+		.name = "dispblk-mipi-csi",
+		.clk_names = (const char *[]){ "csi-aclk", "csi-pclk" },
+		.num_clks = 2,
+		.gpc_name = "mipi-csi",
+		.rst_mask = BIT(2) | BIT(3),
+		.clk_mask = BIT(2) | BIT(3),
+		.mipi_phy_rst_mask = BIT(16),
+	},
+	[IMX8MN_DISPBLK_PD_LCDIF] = {
+		.name = "dispblk-lcdif",
+		.clk_names = (const char *[]){ "lcdif-axi", "lcdif-apb", "lcdif-pix", },
+		.num_clks = 3,
+		.gpc_name = "lcdif",
+		.rst_mask = BIT(4) | BIT(5),
+		.clk_mask = BIT(4) | BIT(5),
+	},
+	[IMX8MN_DISPBLK_PD_ISI] = {
+		.name = "dispblk-isi",
+		.clk_names = (const char *[]){ "disp_axi", "disp_apb", "disp_axi_root",
+						"disp_apb_root"},
+		.num_clks = 4,
+		.gpc_name = "isi",
+		.rst_mask = BIT(6) | BIT(7),
+		.clk_mask = BIT(6) | BIT(7),
+	},
+};
+
+static const struct imx8m_blk_ctrl_data imx8mn_disp_blk_ctl_dev_data = {
+	.max_reg = 0x84,
+	.power_notifier_fn = imx8mn_disp_power_notifier,
+	.domains = imx8mn_disp_blk_ctl_domain_data,
+	.num_domains = ARRAY_SIZE(imx8mn_disp_blk_ctl_domain_data),
+};
+
 static const struct of_device_id imx8m_blk_ctrl_of_match[] = {
 	{
 		.compatible = "fsl,imx8mm-vpu-blk-ctrl",
@@ -524,7 +596,10 @@ static const struct of_device_id imx8m_blk_ctrl_of_match[] = {
 	}, {
 		.compatible = "fsl,imx8mm-disp-blk-ctrl",
 		.data = &imx8mm_disp_blk_ctl_dev_data
-	} ,{
+	}, {
+		.compatible = "fsl,imx8mn-disp-blk-ctrl",
+		.data = &imx8mn_disp_blk_ctl_dev_data
+	}, {
 		/* Sentinel */
 	}
 };

drivers/soc/qcom/cpr.c

@@ -1010,7 +1010,7 @@ static int cpr_interpolate(const struct corner *corner, int step_volt,
 		return corner->uV;
 
 	temp = f_diff * (uV_high - uV_low);
-	do_div(temp, f_high - f_low);
+	temp = div64_ul(temp, f_high - f_low);
 
 	/*
 	 * max_volt_scale has units of uV/MHz while freq values

drivers/soc/qcom/llcc-qcom.c

@@ -195,6 +195,28 @@ static const struct llcc_slice_config sm8250_data[] =  {
 	{ LLCC_WRCACHE, 31, 256,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
 };
 
+static const struct llcc_slice_config sm8350_data[] =  {
+	{ LLCC_CPUSS,    1, 3072,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 1 },
+	{ LLCC_VIDSC0,   2, 512,   3, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_AUDIO,    6, 1024,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 0, 0 },
+	{ LLCC_MDMHPGRW, 7, 1024,  3, 0, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_MODHW,    9, 1024,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_CMPT,     10, 3072, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_GPUHTW,   11, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_GPU,      12, 1024, 1, 0, 0xfff, 0x0, 0, 0, 0, 1, 1, 0 },
+	{ LLCC_MMUHWT,   13, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 0, 1 },
+	{ LLCC_DISP,     16, 3072, 2, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_MDMPNG,   21, 1024, 0, 1, 0xf,   0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_AUDHW,    22, 1024, 1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_CVP,      28, 512,  3, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_MODPE,    29, 256,  1, 1, 0xf,   0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_APTCM,    30, 1024, 3, 1, 0x0,   0x1, 1, 0, 0, 0, 1, 0 },
+	{ LLCC_WRCACHE,  31, 512,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 0, 1 },
+	{ LLCC_CVPFW,    17, 512,  1, 0, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_CPUSS1,   3, 1024,  1, 1, 0xfff, 0x0, 0, 0, 0, 0, 1, 0 },
+	{ LLCC_CPUHWT,   5, 512,   1, 1, 0xfff, 0x0, 0, 0, 0, 0, 0, 1 },
+};
+
 static const struct qcom_llcc_config sc7180_cfg = {
 	.sct_data	= sc7180_data,
 	.size		= ARRAY_SIZE(sc7180_data),
@@ -228,6 +250,11 @@ static const struct qcom_llcc_config sm8250_cfg = {
 	.size           = ARRAY_SIZE(sm8250_data),
 };
 
+static const struct qcom_llcc_config sm8350_cfg = {
+	.sct_data       = sm8350_data,
+	.size           = ARRAY_SIZE(sm8350_data),
+};
+
 static struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER;
 
 /**
@@ -644,6 +671,7 @@ static const struct of_device_id qcom_llcc_of_match[] = {
 	{ .compatible = "qcom,sm6350-llcc", .data = &sm6350_cfg },
 	{ .compatible = "qcom,sm8150-llcc", .data = &sm8150_cfg },
 	{ .compatible = "qcom,sm8250-llcc", .data = &sm8250_cfg },
+	{ .compatible = "qcom,sm8350-llcc", .data = &sm8350_cfg },
 	{ }
 };
 

drivers/soc/qcom/qcom_aoss.c

@@ -352,7 +352,7 @@ static int qmp_cdev_set_cur_state(struct thermal_cooling_device *cdev,
 	return ret;
 }
 
-static struct thermal_cooling_device_ops qmp_cooling_device_ops = {
+static const struct thermal_cooling_device_ops qmp_cooling_device_ops = {
 	.get_max_state = qmp_cdev_get_max_state,
 	.get_cur_state = qmp_cdev_get_cur_state,
 	.set_cur_state = qmp_cdev_set_cur_state,

drivers/soc/qcom/qcom_stats.c

@@ -237,6 +237,15 @@ static const struct stats_config rpm_data = {
 	.subsystem_stats_in_smem = false,
 };
 
+/* Older RPM firmwares have the stats at a fixed offset instead */
+static const struct stats_config rpm_data_dba0 = {
+	.stats_offset = 0xdba0,
+	.num_records = 2,
+	.appended_stats_avail = true,
+	.dynamic_offset = false,
+	.subsystem_stats_in_smem = false,
+};
+
 static const struct stats_config rpmh_data = {
 	.stats_offset = 0x48,
 	.num_records = 3,
@@ -246,6 +255,10 @@ static const struct stats_config rpmh_data = {
 };
 
 static const struct of_device_id qcom_stats_table[] = {
+	{ .compatible = "qcom,apq8084-rpm-stats", .data = &rpm_data_dba0 },
+	{ .compatible = "qcom,msm8226-rpm-stats", .data = &rpm_data_dba0 },
+	{ .compatible = "qcom,msm8916-rpm-stats", .data = &rpm_data_dba0 },
+	{ .compatible = "qcom,msm8974-rpm-stats", .data = &rpm_data_dba0 },
 	{ .compatible = "qcom,rpm-stats", .data = &rpm_data },
 	{ .compatible = "qcom,rpmh-stats", .data = &rpmh_data },
 	{ }

drivers/soc/qcom/qmi_interface.c

@@ -96,7 +96,7 @@ static void qmi_recv_del_server(struct qmi_handle *qmi,
  * @node:	id of the dying node
  *
  * Signals the client that all previously registered services on this node are
- * now gone and then calls the bye callback to allow the client client further
+ * now gone and then calls the bye callback to allow the client further
  * cleaning up resources associated with this remote.
  */
 static void qmi_recv_bye(struct qmi_handle *qmi,

drivers/soc/qcom/rpmh-rsc.c

@@ -691,7 +691,7 @@ static int find_slots(struct tcs_group *tcs, const struct tcs_request *msg,
  * @drv: The controller.
  * @msg: The data to be written to the controller.
  *
- * This should only be called for for sleep/wake state, never active-only
+ * This should only be called for sleep/wake state, never active-only
  * state.
  *
  * The caller must ensure that no other RPMH actions are happening and the

drivers/soc/qcom/rpmhpd.c

@@ -63,73 +63,134 @@ struct rpmhpd_desc {
 
 static DEFINE_MUTEX(rpmhpd_lock);
 
-/* SDM845 RPMH powerdomains */
+/* RPMH powerdomains */
 
-static struct rpmhpd sdm845_ebi = {
+static struct rpmhpd cx_ao;
+static struct rpmhpd mx;
+static struct rpmhpd mx_ao;
+static struct rpmhpd cx = {
+	.pd = { .name = "cx", },
+	.peer = &cx_ao,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao = {
+	.pd = { .name = "cx_ao", },
+	.active_only = true,
+	.peer = &cx,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao_w_mx_parent;
+static struct rpmhpd cx_w_mx_parent = {
+	.pd = { .name = "cx", },
+	.peer = &cx_ao_w_mx_parent,
+	.parent = &mx.pd,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd cx_ao_w_mx_parent = {
+	.pd = { .name = "cx_ao", },
+	.active_only = true,
+	.peer = &cx_w_mx_parent,
+	.parent = &mx_ao.pd,
+	.res_name = "cx.lvl",
+};
+
+static struct rpmhpd ebi = {
 	.pd = { .name = "ebi", },
 	.res_name = "ebi.lvl",
 };
 
-static struct rpmhpd sdm845_lmx = {
+static struct rpmhpd gfx = {
-	.pd = { .name = "lmx", },
-	.res_name = "lmx.lvl",
-};
-
-static struct rpmhpd sdm845_lcx = {
-	.pd = { .name = "lcx", },
-	.res_name = "lcx.lvl",
-};
-
-static struct rpmhpd sdm845_gfx = {
 	.pd = { .name = "gfx", },
 	.res_name = "gfx.lvl",
 };
 
-static struct rpmhpd sdm845_mss = {
+static struct rpmhpd lcx = {
+	.pd = { .name = "lcx", },
+	.res_name = "lcx.lvl",
+};
+
+static struct rpmhpd lmx = {
+	.pd = { .name = "lmx", },
+	.res_name = "lmx.lvl",
+};
+
+static struct rpmhpd mmcx_ao;
+static struct rpmhpd mmcx = {
+	.pd = { .name = "mmcx", },
+	.peer = &mmcx_ao,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao = {
+	.pd = { .name = "mmcx_ao", },
+	.active_only = true,
+	.peer = &mmcx,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao_w_cx_parent;
+static struct rpmhpd mmcx_w_cx_parent = {
+	.pd = { .name = "mmcx", },
+	.peer = &mmcx_ao_w_cx_parent,
+	.parent = &cx.pd,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mmcx_ao_w_cx_parent = {
+	.pd = { .name = "mmcx_ao", },
+	.active_only = true,
+	.peer = &mmcx_w_cx_parent,
+	.parent = &cx_ao.pd,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd mss = {
 	.pd = { .name = "mss", },
 	.res_name = "mss.lvl",
 };
 
-static struct rpmhpd sdm845_mx_ao;
+static struct rpmhpd mx_ao;
-static struct rpmhpd sdm845_mx = {
+static struct rpmhpd mx = {
 	.pd = { .name = "mx", },
-	.peer = &sdm845_mx_ao,
+	.peer = &mx_ao,
 	.res_name = "mx.lvl",
 };
 
-static struct rpmhpd sdm845_mx_ao = {
+static struct rpmhpd mx_ao = {
 	.pd = { .name = "mx_ao", },
 	.active_only = true,
-	.peer = &sdm845_mx,
+	.peer = &mx,
 	.res_name = "mx.lvl",
 };
 
-static struct rpmhpd sdm845_cx_ao;
+static struct rpmhpd mxc_ao;
-static struct rpmhpd sdm845_cx = {
+static struct rpmhpd mxc = {
-	.pd = { .name = "cx", },
+	.pd = { .name = "mxc", },
-	.peer = &sdm845_cx_ao,
+	.peer = &mxc_ao,
-	.parent = &sdm845_mx.pd,
+	.res_name = "mxc.lvl",
-	.res_name = "cx.lvl",
 };
 
-static struct rpmhpd sdm845_cx_ao = {
+static struct rpmhpd mxc_ao = {
-	.pd = { .name = "cx_ao", },
+	.pd = { .name = "mxc_ao", },
 	.active_only = true,
-	.peer = &sdm845_cx,
+	.peer = &mxc,
-	.parent = &sdm845_mx_ao.pd,
+	.res_name = "mxc.lvl",
-	.res_name = "cx.lvl",
 };
 
+/* SDM845 RPMH powerdomains */
 static struct rpmhpd *sdm845_rpmhpds[] = {
-	[SDM845_EBI] = &sdm845_ebi,
+	[SDM845_CX] = &cx_w_mx_parent,
-	[SDM845_MX] = &sdm845_mx,
+	[SDM845_CX_AO] = &cx_ao_w_mx_parent,
-	[SDM845_MX_AO] = &sdm845_mx_ao,
+	[SDM845_EBI] = &ebi,
-	[SDM845_CX] = &sdm845_cx,
+	[SDM845_GFX] = &gfx,
-	[SDM845_CX_AO] = &sdm845_cx_ao,
+	[SDM845_LCX] = &lcx,
-	[SDM845_LMX] = &sdm845_lmx,
+	[SDM845_LMX] = &lmx,
-	[SDM845_LCX] = &sdm845_lcx,
+	[SDM845_MSS] = &mss,
-	[SDM845_GFX] = &sdm845_gfx,
+	[SDM845_MX] = &mx,
-	[SDM845_MSS] = &sdm845_mss,
+	[SDM845_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sdm845_desc = {
@@ -139,9 +200,9 @@ static const struct rpmhpd_desc sdm845_desc = {
 
 /* SDX55 RPMH powerdomains */
 static struct rpmhpd *sdx55_rpmhpds[] = {
-	[SDX55_MSS] = &sdm845_mss,
+	[SDX55_CX] = &cx_w_mx_parent,
-	[SDX55_MX] = &sdm845_mx,
+	[SDX55_MSS] = &mss,
-	[SDX55_CX] = &sdm845_cx,
+	[SDX55_MX] = &mx,
 };
 
 static const struct rpmhpd_desc sdx55_desc = {
@@ -151,12 +212,12 @@ static const struct rpmhpd_desc sdx55_desc = {
 
 /* SM6350 RPMH powerdomains */
 static struct rpmhpd *sm6350_rpmhpds[] = {
-	[SM6350_CX] = &sdm845_cx,
+	[SM6350_CX] = &cx_w_mx_parent,
-	[SM6350_GFX] = &sdm845_gfx,
+	[SM6350_GFX] = &gfx,
-	[SM6350_LCX] = &sdm845_lcx,
+	[SM6350_LCX] = &lcx,
-	[SM6350_LMX] = &sdm845_lmx,
+	[SM6350_LMX] = &lmx,
-	[SM6350_MSS] = &sdm845_mss,
+	[SM6350_MSS] = &mss,
-	[SM6350_MX] = &sdm845_mx,
+	[SM6350_MX] = &mx,
 };
 
 static const struct rpmhpd_desc sm6350_desc = {
@@ -165,33 +226,18 @@ static const struct rpmhpd_desc sm6350_desc = {
 };
 
 /* SM8150 RPMH powerdomains */
-
-static struct rpmhpd sm8150_mmcx_ao;
-static struct rpmhpd sm8150_mmcx = {
-	.pd = { .name = "mmcx", },
-	.peer = &sm8150_mmcx_ao,
-	.res_name = "mmcx.lvl",
-};
-
-static struct rpmhpd sm8150_mmcx_ao = {
-	.pd = { .name = "mmcx_ao", },
-	.active_only = true,
-	.peer = &sm8150_mmcx,
-	.res_name = "mmcx.lvl",
-};
-
 static struct rpmhpd *sm8150_rpmhpds[] = {
-	[SM8150_MSS] = &sdm845_mss,
+	[SM8150_CX] = &cx_w_mx_parent,
-	[SM8150_EBI] = &sdm845_ebi,
+	[SM8150_CX_AO] = &cx_ao_w_mx_parent,
-	[SM8150_LMX] = &sdm845_lmx,
+	[SM8150_EBI] = &ebi,
-	[SM8150_LCX] = &sdm845_lcx,
+	[SM8150_GFX] = &gfx,
-	[SM8150_GFX] = &sdm845_gfx,
+	[SM8150_LCX] = &lcx,
-	[SM8150_MX] = &sdm845_mx,
+	[SM8150_LMX] = &lmx,
-	[SM8150_MX_AO] = &sdm845_mx_ao,
+	[SM8150_MMCX] = &mmcx,
-	[SM8150_CX] = &sdm845_cx,
+	[SM8150_MMCX_AO] = &mmcx_ao,
-	[SM8150_CX_AO] = &sdm845_cx_ao,
+	[SM8150_MSS] = &mss,
-	[SM8150_MMCX] = &sm8150_mmcx,
+	[SM8150_MX] = &mx,
-	[SM8150_MMCX_AO] = &sm8150_mmcx_ao,
+	[SM8150_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sm8150_desc = {
@@ -199,17 +245,18 @@ static const struct rpmhpd_desc sm8150_desc = {
 	.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
 };
 
+/* SM8250 RPMH powerdomains */
 static struct rpmhpd *sm8250_rpmhpds[] = {
-	[SM8250_CX] = &sdm845_cx,
+	[SM8250_CX] = &cx_w_mx_parent,
-	[SM8250_CX_AO] = &sdm845_cx_ao,
+	[SM8250_CX_AO] = &cx_ao_w_mx_parent,
-	[SM8250_EBI] = &sdm845_ebi,
+	[SM8250_EBI] = &ebi,
-	[SM8250_GFX] = &sdm845_gfx,
+	[SM8250_GFX] = &gfx,
-	[SM8250_LCX] = &sdm845_lcx,
+	[SM8250_LCX] = &lcx,
-	[SM8250_LMX] = &sdm845_lmx,
+	[SM8250_LMX] = &lmx,
-	[SM8250_MMCX] = &sm8150_mmcx,
+	[SM8250_MMCX] = &mmcx,
-	[SM8250_MMCX_AO] = &sm8150_mmcx_ao,
+	[SM8250_MMCX_AO] = &mmcx_ao,
-	[SM8250_MX] = &sdm845_mx,
+	[SM8250_MX] = &mx,
-	[SM8250_MX_AO] = &sdm845_mx_ao,
+	[SM8250_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sm8250_desc = {
@@ -218,34 +265,20 @@ static const struct rpmhpd_desc sm8250_desc = {
 };
 
 /* SM8350 Power domains */
-static struct rpmhpd sm8350_mxc_ao;
-static struct rpmhpd sm8350_mxc = {
-	.pd = { .name = "mxc", },
-	.peer = &sm8350_mxc_ao,
-	.res_name = "mxc.lvl",
-};
-
-static struct rpmhpd sm8350_mxc_ao = {
-	.pd = { .name = "mxc_ao", },
-	.active_only = true,
-	.peer = &sm8350_mxc,
-	.res_name = "mxc.lvl",
-};
-
 static struct rpmhpd *sm8350_rpmhpds[] = {
-	[SM8350_CX] = &sdm845_cx,
+	[SM8350_CX] = &cx_w_mx_parent,
-	[SM8350_CX_AO] = &sdm845_cx_ao,
+	[SM8350_CX_AO] = &cx_ao_w_mx_parent,
-	[SM8350_EBI] = &sdm845_ebi,
+	[SM8350_EBI] = &ebi,
-	[SM8350_GFX] = &sdm845_gfx,
+	[SM8350_GFX] = &gfx,
-	[SM8350_LCX] = &sdm845_lcx,
+	[SM8350_LCX] = &lcx,
-	[SM8350_LMX] = &sdm845_lmx,
+	[SM8350_LMX] = &lmx,
-	[SM8350_MMCX] = &sm8150_mmcx,
+	[SM8350_MMCX] = &mmcx,
-	[SM8350_MMCX_AO] = &sm8150_mmcx_ao,
+	[SM8350_MMCX_AO] = &mmcx_ao,
-	[SM8350_MX] = &sdm845_mx,
+	[SM8350_MSS] = &mss,
-	[SM8350_MX_AO] = &sdm845_mx_ao,
+	[SM8350_MX] = &mx,
-	[SM8350_MXC] = &sm8350_mxc,
+	[SM8350_MX_AO] = &mx_ao,
-	[SM8350_MXC_AO] = &sm8350_mxc_ao,
+	[SM8350_MXC] = &mxc,
-	[SM8350_MSS] = &sdm845_mss,
+	[SM8350_MXC_AO] = &mxc_ao,
 };
 
 static const struct rpmhpd_desc sm8350_desc = {
@@ -253,16 +286,38 @@ static const struct rpmhpd_desc sm8350_desc = {
 	.num_pds = ARRAY_SIZE(sm8350_rpmhpds),
 };
 
+/* SM8450 RPMH powerdomains */
+static struct rpmhpd *sm8450_rpmhpds[] = {
+	[SM8450_CX] = &cx,
+	[SM8450_CX_AO] = &cx_ao,
+	[SM8450_EBI] = &ebi,
+	[SM8450_GFX] = &gfx,
+	[SM8450_LCX] = &lcx,
+	[SM8450_LMX] = &lmx,
+	[SM8450_MMCX] = &mmcx_w_cx_parent,
+	[SM8450_MMCX_AO] = &mmcx_ao_w_cx_parent,
+	[SM8450_MSS] = &mss,
+	[SM8450_MX] = &mx,
+	[SM8450_MX_AO] = &mx_ao,
+	[SM8450_MXC] = &mxc,
+	[SM8450_MXC_AO] = &mxc_ao,
+};
+
+static const struct rpmhpd_desc sm8450_desc = {
+	.rpmhpds = sm8450_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8450_rpmhpds),
+};
+
 /* SC7180 RPMH powerdomains */
 static struct rpmhpd *sc7180_rpmhpds[] = {
-	[SC7180_CX] = &sdm845_cx,
+	[SC7180_CX] = &cx_w_mx_parent,
-	[SC7180_CX_AO] = &sdm845_cx_ao,
+	[SC7180_CX_AO] = &cx_ao_w_mx_parent,
-	[SC7180_GFX] = &sdm845_gfx,
+	[SC7180_GFX] = &gfx,
-	[SC7180_MX] = &sdm845_mx,
+	[SC7180_LCX] = &lcx,
-	[SC7180_MX_AO] = &sdm845_mx_ao,
+	[SC7180_LMX] = &lmx,
-	[SC7180_LMX] = &sdm845_lmx,
+	[SC7180_MSS] = &mss,
-	[SC7180_LCX] = &sdm845_lcx,
+	[SC7180_MX] = &mx,
-	[SC7180_MSS] = &sdm845_mss,
+	[SC7180_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sc7180_desc = {
@@ -272,15 +327,15 @@ static const struct rpmhpd_desc sc7180_desc = {
 
 /* SC7280 RPMH powerdomains */
 static struct rpmhpd *sc7280_rpmhpds[] = {
-	[SC7280_CX] = &sdm845_cx,
+	[SC7280_CX] = &cx,
-	[SC7280_CX_AO] = &sdm845_cx_ao,
+	[SC7280_CX_AO] = &cx_ao,
-	[SC7280_EBI] = &sdm845_ebi,
+	[SC7280_EBI] = &ebi,
-	[SC7280_GFX] = &sdm845_gfx,
+	[SC7280_GFX] = &gfx,
-	[SC7280_MX] = &sdm845_mx,
+	[SC7280_LCX] = &lcx,
-	[SC7280_MX_AO] = &sdm845_mx_ao,
+	[SC7280_LMX] = &lmx,
-	[SC7280_LMX] = &sdm845_lmx,
+	[SC7280_MSS] = &mss,
-	[SC7280_LCX] = &sdm845_lcx,
+	[SC7280_MX] = &mx,
-	[SC7280_MSS] = &sdm845_mss,
+	[SC7280_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sc7280_desc = {
@@ -290,17 +345,17 @@ static const struct rpmhpd_desc sc7280_desc = {
 
 /* SC8180x RPMH powerdomains */
 static struct rpmhpd *sc8180x_rpmhpds[] = {
-	[SC8180X_CX] = &sdm845_cx,
+	[SC8180X_CX] = &cx_w_mx_parent,
-	[SC8180X_CX_AO] = &sdm845_cx_ao,
+	[SC8180X_CX_AO] = &cx_ao_w_mx_parent,
-	[SC8180X_EBI] = &sdm845_ebi,
+	[SC8180X_EBI] = &ebi,
-	[SC8180X_GFX] = &sdm845_gfx,
+	[SC8180X_GFX] = &gfx,
-	[SC8180X_LCX] = &sdm845_lcx,
+	[SC8180X_LCX] = &lcx,
-	[SC8180X_LMX] = &sdm845_lmx,
+	[SC8180X_LMX] = &lmx,
-	[SC8180X_MMCX] = &sm8150_mmcx,
+	[SC8180X_MMCX] = &mmcx,
-	[SC8180X_MMCX_AO] = &sm8150_mmcx_ao,
+	[SC8180X_MMCX_AO] = &mmcx_ao,
-	[SC8180X_MSS] = &sdm845_mss,
+	[SC8180X_MSS] = &mss,
-	[SC8180X_MX] = &sdm845_mx,
+	[SC8180X_MX] = &mx,
-	[SC8180X_MX_AO] = &sdm845_mx_ao,
+	[SC8180X_MX_AO] = &mx_ao,
 };
 
 static const struct rpmhpd_desc sc8180x_desc = {
@@ -318,6 +373,7 @@ static const struct of_device_id rpmhpd_match_table[] = {
 	{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
 	{ .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
 	{ .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
+	{ .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, rpmhpd_match_table);

drivers/soc/qcom/rpmpd.c

@@ -102,7 +102,6 @@ struct rpmpd {
 	const bool active_only;
 	unsigned int corner;
 	bool enabled;
-	const char *res_name;
 	const int res_type;
 	const int res_id;
 	struct qcom_smd_rpm *rpm;
@@ -396,6 +395,45 @@ static const struct rpmpd_desc sm6115_desc = {
 	.max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
 };
 
+/* sm6125 RPM Power domains */
+DEFINE_RPMPD_PAIR(sm6125, vddcx, vddcx_ao, RWCX, LEVEL, 0);
+DEFINE_RPMPD_VFL(sm6125, vddcx_vfl, RWCX, 0);
+
+DEFINE_RPMPD_PAIR(sm6125, vddmx, vddmx_ao, RWMX, LEVEL, 0);
+DEFINE_RPMPD_VFL(sm6125, vddmx_vfl, RWMX, 0);
+
+static struct rpmpd *sm6125_rpmpds[] = {
+	[SM6125_VDDCX] =		&sm6125_vddcx,
+	[SM6125_VDDCX_AO] =		&sm6125_vddcx_ao,
+	[SM6125_VDDCX_VFL] =		&sm6125_vddcx_vfl,
+	[SM6125_VDDMX] =		&sm6125_vddmx,
+	[SM6125_VDDMX_AO] =		&sm6125_vddmx_ao,
+	[SM6125_VDDMX_VFL] =		&sm6125_vddmx_vfl,
+};
+
+static const struct rpmpd_desc sm6125_desc = {
+	.rpmpds = sm6125_rpmpds,
+	.num_pds = ARRAY_SIZE(sm6125_rpmpds),
+	.max_state = RPM_SMD_LEVEL_BINNING,
+};
+
+static struct rpmpd *qcm2290_rpmpds[] = {
+	[QCM2290_VDDCX] = &sm6115_vddcx,
+	[QCM2290_VDDCX_AO] = &sm6115_vddcx_ao,
+	[QCM2290_VDDCX_VFL] = &sm6115_vddcx_vfl,
+	[QCM2290_VDDMX] = &sm6115_vddmx,
+	[QCM2290_VDDMX_AO] = &sm6115_vddmx_ao,
+	[QCM2290_VDDMX_VFL] = &sm6115_vddmx_vfl,
+	[QCM2290_VDD_LPI_CX] = &sm6115_vdd_lpi_cx,
+	[QCM2290_VDD_LPI_MX] = &sm6115_vdd_lpi_mx,
+};
+
+static const struct rpmpd_desc qcm2290_desc = {
+	.rpmpds = qcm2290_rpmpds,
+	.num_pds = ARRAY_SIZE(qcm2290_rpmpds),
+	.max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
+};
+
 static const struct of_device_id rpmpd_match_table[] = {
 	{ .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
 	{ .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
@@ -405,9 +443,11 @@ static const struct of_device_id rpmpd_match_table[] = {
 	{ .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
 	{ .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
 	{ .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
+	{ .compatible = "qcom,qcm2290-rpmpd", .data = &qcm2290_desc },
 	{ .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
 	{ .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
 	{ .compatible = "qcom,sm6115-rpmpd", .data = &sm6115_desc },
+	{ .compatible = "qcom,sm6125-rpmpd", .data = &sm6125_desc },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, rpmpd_match_table);

drivers/soc/qcom/smem.c

@@ -85,7 +85,7 @@
 #define SMEM_GLOBAL_HOST	0xfffe
 
 /* Max number of processors/hosts in a system */
-#define SMEM_HOST_COUNT		14
+#define SMEM_HOST_COUNT		15
 
 /**
   * struct smem_proc_comm - proc_comm communication struct (legacy)

drivers/soc/qcom/socinfo.c

@@ -313,8 +313,11 @@ static const struct soc_id soc_id[] = {
 	{ 421, "IPQ6000" },
 	{ 422, "IPQ6010" },
 	{ 425, "SC7180" },
+	{ 434, "SM6350" },
 	{ 453, "IPQ6005" },
 	{ 455, "QRB5165" },
+	{ 457, "SM8450" },
+	{ 459, "SM7225" },
 };
 
 static const char *socinfo_machine(struct device *dev, unsigned int id)

drivers/soc/renesas/Kconfig

@@ -235,6 +235,13 @@ config ARCH_R8A77961
 	  This enables support for the Renesas R-Car M3-W+ SoC.
 	  This includes different gradings like R-Car M3e and M3e-2G.
 
+config ARCH_R8A779F0
+	bool "ARM64 Platform support for R-Car S4-8"
+	select ARCH_RCAR_GEN3
+	select SYSC_R8A779F0
+	help
+	  This enables support for the Renesas R-Car S4-8 SoC.
+
 config ARCH_R8A77980
 	bool "ARM64 Platform support for R-Car V3H"
 	select ARCH_RCAR_GEN3
@@ -297,6 +304,9 @@ config RST_RCAR
 config SYSC_RCAR
 	bool "System Controller support for R-Car" if COMPILE_TEST
 
+config SYSC_RCAR_GEN4
+	bool "System Controller support for R-Car Gen4" if COMPILE_TEST
+
 config SYSC_R8A77995
 	bool "System Controller support for R-Car D3" if COMPILE_TEST
 	select SYSC_RCAR
@@ -337,6 +347,10 @@ config SYSC_R8A77961
 	bool "System Controller support for R-Car M3-W+" if COMPILE_TEST
 	select SYSC_RCAR
 
+config SYSC_R8A779F0
+	bool "System Controller support for R-Car S4-8" if COMPILE_TEST
+	select SYSC_RCAR_GEN4
+
 config SYSC_R8A7792
 	bool "System Controller support for R-Car V2H" if COMPILE_TEST
 	select SYSC_RCAR
@@ -351,6 +365,7 @@ config SYSC_R8A77970
 
 config SYSC_R8A779A0
 	bool "System Controller support for R-Car V3U" if COMPILE_TEST
+	select SYSC_RCAR_GEN4
 
 config SYSC_RMOBILE
 	bool "System Controller support for R-Mobile" if COMPILE_TEST

drivers/soc/renesas/Makefile

@@ -25,6 +25,7 @@ obj-$(CONFIG_SYSC_R8A77980)	+= r8a77980-sysc.o
 obj-$(CONFIG_SYSC_R8A77990)	+= r8a77990-sysc.o
 obj-$(CONFIG_SYSC_R8A77995)	+= r8a77995-sysc.o
 obj-$(CONFIG_SYSC_R8A779A0)	+= r8a779a0-sysc.o
+obj-$(CONFIG_SYSC_R8A779F0)	+= r8a779f0-sysc.o
 ifdef CONFIG_SMP
 obj-$(CONFIG_ARCH_R9A06G032)	+= r9a06g032-smp.o
 endif
@@ -32,4 +33,5 @@ endif
 # Family
 obj-$(CONFIG_RST_RCAR)		+= rcar-rst.o
 obj-$(CONFIG_SYSC_RCAR)		+= rcar-sysc.o
+obj-$(CONFIG_SYSC_RCAR_GEN4)	+= rcar-gen4-sysc.o
 obj-$(CONFIG_SYSC_RMOBILE)	+= rmobile-sysc.o

drivers/soc/renesas/r8a779a0-sysc.c

@@ -21,35 +21,9 @@
 
 #include <dt-bindings/power/r8a779a0-sysc.h>
 
-/*
+#include "rcar-gen4-sysc.h"
- * Power Domain flags
- */
-#define PD_CPU		BIT(0)	/* Area contains main CPU core */
-#define PD_SCU		BIT(1)	/* Area contains SCU and L2 cache */
-#define PD_NO_CR	BIT(2)	/* Area lacks PWR{ON,OFF}CR registers */
 
-#define PD_CPU_NOCR	PD_CPU | PD_NO_CR /* CPU area lacks CR */
+static struct rcar_gen4_sysc_area r8a779a0_areas[] __initdata = {
-#define PD_ALWAYS_ON	PD_NO_CR	  /* Always-on area */
-
-/*
- * Description of a Power Area
- */
-struct r8a779a0_sysc_area {
-	const char *name;
-	u8 pdr;			/* PDRn */
-	int parent;		/* -1 if none */
-	unsigned int flags;	/* See PD_* */
-};
-
-/*
- * SoC-specific Power Area Description
- */
-struct r8a779a0_sysc_info {
-	const struct r8a779a0_sysc_area *areas;
-	unsigned int num_areas;
-};
-
-static struct r8a779a0_sysc_area r8a779a0_areas[] __initdata = {
 	{ "always-on",	R8A779A0_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
 	{ "a3e0",	R8A779A0_PD_A3E0, R8A779A0_PD_ALWAYS_ON, PD_SCU },
 	{ "a3e1",	R8A779A0_PD_A3E1, R8A779A0_PD_ALWAYS_ON, PD_SCU },
@@ -96,355 +70,7 @@ static struct r8a779a0_sysc_area r8a779a0_areas[] __initdata = {
 	{ "a1dsp1",	R8A779A0_PD_A1DSP1, R8A779A0_PD_A2CN1 },
 };
 
-static const struct r8a779a0_sysc_info r8a779a0_sysc_info __initconst = {
+const struct rcar_gen4_sysc_info r8a779a0_sysc_info __initconst = {
 	.areas = r8a779a0_areas,
 	.num_areas = ARRAY_SIZE(r8a779a0_areas),
 };
-
-/* SYSC Common */
-#define SYSCSR		0x000	/* SYSC Status Register */
-#define SYSCPONSR(x)	(0x800 + ((x) * 0x4)) /* Power-ON Status Register 0 */
-#define SYSCPOFFSR(x)	(0x808 + ((x) * 0x4)) /* Power-OFF Status Register */
-#define SYSCISCR(x)	(0x810 + ((x) * 0x4)) /* Interrupt Status/Clear Register */
-#define SYSCIER(x)	(0x820 + ((x) * 0x4)) /* Interrupt Enable Register */
-#define SYSCIMR(x)	(0x830 + ((x) * 0x4)) /* Interrupt Mask Register */
-
-/* Power Domain Registers */
-#define PDRSR(n)	(0x1000 + ((n) * 0x40))
-#define PDRONCR(n)	(0x1004 + ((n) * 0x40))
-#define PDROFFCR(n)	(0x1008 + ((n) * 0x40))
-#define PDRESR(n)	(0x100C + ((n) * 0x40))
-
-/* PWRON/PWROFF */
-#define PWRON_PWROFF		BIT(0)	/* Power-ON/OFF request */
-
-/* PDRESR */
-#define PDRESR_ERR		BIT(0)
-
-/* PDRSR */
-#define PDRSR_OFF		BIT(0)	/* Power-OFF state */
-#define PDRSR_ON		BIT(4)	/* Power-ON state */
-#define PDRSR_OFF_STATE		BIT(8)  /* Processing Power-OFF sequence */
-#define PDRSR_ON_STATE		BIT(12) /* Processing Power-ON sequence */
-
-#define SYSCSR_BUSY		GENMASK(1, 0)	/* All bit sets is not busy */
-
-#define SYSCSR_TIMEOUT		10000
-#define SYSCSR_DELAY_US		10
-
-#define PDRESR_RETRIES		1000
-#define PDRESR_DELAY_US		10
-
-#define SYSCISR_TIMEOUT		10000
-#define SYSCISR_DELAY_US	10
-
-#define NUM_DOMAINS_EACH_REG	BITS_PER_TYPE(u32)
-
-static void __iomem *r8a779a0_sysc_base;
-static DEFINE_SPINLOCK(r8a779a0_sysc_lock); /* SMP CPUs + I/O devices */
-
-static int r8a779a0_sysc_pwr_on_off(u8 pdr, bool on)
-{
-	unsigned int reg_offs;
-	u32 val;
-	int ret;
-
-	if (on)
-		reg_offs = PDRONCR(pdr);
-	else
-		reg_offs = PDROFFCR(pdr);
-
-	/* Wait until SYSC is ready to accept a power request */
-	ret = readl_poll_timeout_atomic(r8a779a0_sysc_base + SYSCSR, val,
-					(val & SYSCSR_BUSY) == SYSCSR_BUSY,
-					SYSCSR_DELAY_US, SYSCSR_TIMEOUT);
-	if (ret < 0)
-		return -EAGAIN;
-
-	/* Submit power shutoff or power resume request */
-	iowrite32(PWRON_PWROFF, r8a779a0_sysc_base + reg_offs);
-
-	return 0;
-}
-
-static int clear_irq_flags(unsigned int reg_idx, unsigned int isr_mask)
-{
-	u32 val;
-	int ret;
-
-	iowrite32(isr_mask, r8a779a0_sysc_base + SYSCISCR(reg_idx));
-
-	ret = readl_poll_timeout_atomic(r8a779a0_sysc_base + SYSCISCR(reg_idx),
-					val, !(val & isr_mask),
-					SYSCISR_DELAY_US, SYSCISR_TIMEOUT);
-	if (ret < 0) {
-		pr_err("\n %s : Can not clear IRQ flags in SYSCISCR", __func__);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static int r8a779a0_sysc_power(u8 pdr, bool on)
-{
-	unsigned int isr_mask;
-	unsigned int reg_idx, bit_idx;
-	unsigned int status;
-	unsigned long flags;
-	int ret = 0;
-	u32 val;
-	int k;
-
-	spin_lock_irqsave(&r8a779a0_sysc_lock, flags);
-
-	reg_idx = pdr / NUM_DOMAINS_EACH_REG;
-	bit_idx = pdr % NUM_DOMAINS_EACH_REG;
-
-	isr_mask = BIT(bit_idx);
-
-	/*
-	 * The interrupt source needs to be enabled, but masked, to prevent the
-	 * CPU from receiving it.
-	 */
-	iowrite32(ioread32(r8a779a0_sysc_base + SYSCIER(reg_idx)) | isr_mask,
-		  r8a779a0_sysc_base + SYSCIER(reg_idx));
-	iowrite32(ioread32(r8a779a0_sysc_base + SYSCIMR(reg_idx)) | isr_mask,
-		  r8a779a0_sysc_base + SYSCIMR(reg_idx));
-
-	ret = clear_irq_flags(reg_idx, isr_mask);
-	if (ret)
-		goto out;
-
-	/* Submit power shutoff or resume request until it was accepted */
-	for (k = 0; k < PDRESR_RETRIES; k++) {
-		ret = r8a779a0_sysc_pwr_on_off(pdr, on);
-		if (ret)
-			goto out;
-
-		status = ioread32(r8a779a0_sysc_base + PDRESR(pdr));
-		if (!(status & PDRESR_ERR))
-			break;
-
-		udelay(PDRESR_DELAY_US);
-	}
-
-	if (k == PDRESR_RETRIES) {
-		ret = -EIO;
-		goto out;
-	}
-
-	/* Wait until the power shutoff or resume request has completed * */
-	ret = readl_poll_timeout_atomic(r8a779a0_sysc_base + SYSCISCR(reg_idx),
-					val, (val & isr_mask),
-					SYSCISR_DELAY_US, SYSCISR_TIMEOUT);
-	if (ret < 0) {
-		ret = -EIO;
-		goto out;
-	}
-
-	/* Clear interrupt flags */
-	ret = clear_irq_flags(reg_idx, isr_mask);
-	if (ret)
-		goto out;
-
- out:
-	spin_unlock_irqrestore(&r8a779a0_sysc_lock, flags);
-
-	pr_debug("sysc power %s domain %d: %08x -> %d\n", on ? "on" : "off",
-		 pdr, ioread32(r8a779a0_sysc_base + SYSCISCR(reg_idx)), ret);
-	return ret;
-}
-
-static bool r8a779a0_sysc_power_is_off(u8 pdr)
-{
-	unsigned int st;
-
-	st = ioread32(r8a779a0_sysc_base + PDRSR(pdr));
-
-	if (st & PDRSR_OFF)
-		return true;
-
-	return false;
-}
-
-struct r8a779a0_sysc_pd {
-	struct generic_pm_domain genpd;
-	u8 pdr;
-	unsigned int flags;
-	char name[];
-};
-
-static inline struct r8a779a0_sysc_pd *to_r8a779a0_pd(struct generic_pm_domain *d)
-{
-	return container_of(d, struct r8a779a0_sysc_pd, genpd);
-}
-
-static int r8a779a0_sysc_pd_power_off(struct generic_pm_domain *genpd)
-{
-	struct r8a779a0_sysc_pd *pd = to_r8a779a0_pd(genpd);
-
-	pr_debug("%s: %s\n", __func__, genpd->name);
-	return r8a779a0_sysc_power(pd->pdr, false);
-}
-
-static int r8a779a0_sysc_pd_power_on(struct generic_pm_domain *genpd)
-{
-	struct r8a779a0_sysc_pd *pd = to_r8a779a0_pd(genpd);
-
-	pr_debug("%s: %s\n", __func__, genpd->name);
-	return r8a779a0_sysc_power(pd->pdr, true);
-}
-
-static int __init r8a779a0_sysc_pd_setup(struct r8a779a0_sysc_pd *pd)
-{
-	struct generic_pm_domain *genpd = &pd->genpd;
-	const char *name = pd->genpd.name;
-	int error;
-
-	if (pd->flags & PD_CPU) {
-		/*
-		 * This domain contains a CPU core and therefore it should
-		 * only be turned off if the CPU is not in use.
-		 */
-		pr_debug("PM domain %s contains %s\n", name, "CPU");
-		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
-	} else if (pd->flags & PD_SCU) {
-		/*
-		 * This domain contains an SCU and cache-controller, and
-		 * therefore it should only be turned off if the CPU cores are
-		 * not in use.
-		 */
-		pr_debug("PM domain %s contains %s\n", name, "SCU");
-		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
-	} else if (pd->flags & PD_NO_CR) {
-		/*
-		 * This domain cannot be turned off.
-		 */
-		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
-	}
-
-	if (!(pd->flags & (PD_CPU | PD_SCU))) {
-		/* Enable Clock Domain for I/O devices */
-		genpd->flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP;
-		genpd->attach_dev = cpg_mssr_attach_dev;
-		genpd->detach_dev = cpg_mssr_detach_dev;
-	}
-
-	genpd->power_off = r8a779a0_sysc_pd_power_off;
-	genpd->power_on = r8a779a0_sysc_pd_power_on;
-
-	if (pd->flags & (PD_CPU | PD_NO_CR)) {
-		/* Skip CPUs (handled by SMP code) and areas without control */
-		pr_debug("%s: Not touching %s\n", __func__, genpd->name);
-		goto finalize;
-	}
-
-	if (!r8a779a0_sysc_power_is_off(pd->pdr)) {
-		pr_debug("%s: %s is already powered\n", __func__, genpd->name);
-		goto finalize;
-	}
-
-	r8a779a0_sysc_power(pd->pdr, true);
-
-finalize:
-	error = pm_genpd_init(genpd, &simple_qos_governor, false);
-	if (error)
-		pr_err("Failed to init PM domain %s: %d\n", name, error);
-
-	return error;
-}
-
-static const struct of_device_id r8a779a0_sysc_matches[] __initconst = {
-	{ .compatible = "renesas,r8a779a0-sysc", .data = &r8a779a0_sysc_info },
-	{ /* sentinel */ }
-};
-
-struct r8a779a0_pm_domains {
-	struct genpd_onecell_data onecell_data;
-	struct generic_pm_domain *domains[R8A779A0_PD_ALWAYS_ON + 1];
-};
-
-static struct genpd_onecell_data *r8a779a0_sysc_onecell_data;
-
-static int __init r8a779a0_sysc_pd_init(void)
-{
-	const struct r8a779a0_sysc_info *info;
-	const struct of_device_id *match;
-	struct r8a779a0_pm_domains *domains;
-	struct device_node *np;
-	void __iomem *base;
-	unsigned int i;
-	int error;
-
-	np = of_find_matching_node_and_match(NULL, r8a779a0_sysc_matches, &match);
-	if (!np)
-		return -ENODEV;
-
-	info = match->data;
-
-	base = of_iomap(np, 0);
-	if (!base) {
-		pr_warn("%pOF: Cannot map regs\n", np);
-		error = -ENOMEM;
-		goto out_put;
-	}
-
-	r8a779a0_sysc_base = base;
-
-	domains = kzalloc(sizeof(*domains), GFP_KERNEL);
-	if (!domains) {
-		error = -ENOMEM;
-		goto out_put;
-	}
-
-	domains->onecell_data.domains = domains->domains;
-	domains->onecell_data.num_domains = ARRAY_SIZE(domains->domains);
-	r8a779a0_sysc_onecell_data = &domains->onecell_data;
-
-	for (i = 0; i < info->num_areas; i++) {
-		const struct r8a779a0_sysc_area *area = &info->areas[i];
-		struct r8a779a0_sysc_pd *pd;
-		size_t n;
-
-		if (!area->name) {
-			/* Skip NULLified area */
-			continue;
-		}
-
-		n = strlen(area->name) + 1;
-		pd = kzalloc(sizeof(*pd) + n, GFP_KERNEL);
-		if (!pd) {
-			error = -ENOMEM;
-			goto out_put;
-		}
-
-		memcpy(pd->name, area->name, n);
-		pd->genpd.name = pd->name;
-		pd->pdr = area->pdr;
-		pd->flags = area->flags;
-
-		error = r8a779a0_sysc_pd_setup(pd);
-		if (error)
-			goto out_put;
-
-		domains->domains[area->pdr] = &pd->genpd;
-
-		if (area->parent < 0)
-			continue;
-
-		error = pm_genpd_add_subdomain(domains->domains[area->parent],
-					       &pd->genpd);
-		if (error) {
-			pr_warn("Failed to add PM subdomain %s to parent %u\n",
-				area->name, area->parent);
-			goto out_put;
-		}
-	}
-
-	error = of_genpd_add_provider_onecell(np, &domains->onecell_data);
-
-out_put:
-	of_node_put(np);
-	return error;
-}
-early_initcall(r8a779a0_sysc_pd_init);

drivers/soc/renesas/r8a779f0-sysc.c

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas R-Car S4-8 System Controller
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <linux/bits.h>
+#include <linux/clk/renesas.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/of_address.h>
+#include <linux/pm_domain.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <dt-bindings/power/r8a779f0-sysc.h>
+
+#include "rcar-gen4-sysc.h"
+
+static struct rcar_gen4_sysc_area r8a779f0_areas[] __initdata = {
+	{ "always-on",	R8A779F0_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
+	{ "a3e0",	R8A779F0_PD_A3E0, R8A779F0_PD_ALWAYS_ON, PD_SCU },
+	{ "a3e1",	R8A779F0_PD_A3E1, R8A779F0_PD_ALWAYS_ON, PD_SCU },
+	{ "a2e0d0",	R8A779F0_PD_A2E0D0, R8A779F0_PD_A3E0, PD_SCU },
+	{ "a2e0d1",	R8A779F0_PD_A2E0D1, R8A779F0_PD_A3E0, PD_SCU },
+	{ "a2e1d0",	R8A779F0_PD_A2E1D0, R8A779F0_PD_A3E1, PD_SCU },
+	{ "a2e1d1",	R8A779F0_PD_A2E1D1, R8A779F0_PD_A3E1, PD_SCU },
+	{ "a1e0d0c0",	R8A779F0_PD_A1E0D0C0, R8A779F0_PD_A2E0D0, PD_CPU_NOCR },
+	{ "a1e0d0c1",	R8A779F0_PD_A1E0D0C1, R8A779F0_PD_A2E0D0, PD_CPU_NOCR },
+	{ "a1e0d1c0",	R8A779F0_PD_A1E0D1C0, R8A779F0_PD_A2E0D1, PD_CPU_NOCR },
+	{ "a1e0d1c1",	R8A779F0_PD_A1E0D1C1, R8A779F0_PD_A2E0D1, PD_CPU_NOCR },
+	{ "a1e1d0c0",	R8A779F0_PD_A1E1D0C0, R8A779F0_PD_A2E1D0, PD_CPU_NOCR },
+	{ "a1e1d0c1",	R8A779F0_PD_A1E1D0C1, R8A779F0_PD_A2E1D0, PD_CPU_NOCR },
+	{ "a1e1d1c0",	R8A779F0_PD_A1E1D1C0, R8A779F0_PD_A2E1D1, PD_CPU_NOCR },
+	{ "a1e1d1c1",	R8A779F0_PD_A1E1D1C1, R8A779F0_PD_A2E1D1, PD_CPU_NOCR },
+};
+
+const struct rcar_gen4_sysc_info r8a779f0_sysc_info __initconst = {
+	.areas = r8a779f0_areas,
+	.num_areas = ARRAY_SIZE(r8a779f0_areas),
+};

drivers/soc/renesas/rcar-gen4-sysc.c

@@ -0,0 +1,376 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * R-Car Gen4 SYSC Power management support
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <linux/bits.h>
+#include <linux/clk/renesas.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/of_address.h>
+#include <linux/pm_domain.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include "rcar-gen4-sysc.h"
+
+/* SYSC Common */
+#define SYSCSR		0x000	/* SYSC Status Register */
+#define SYSCPONSR(x)	(0x800 + ((x) * 0x4)) /* Power-ON Status Register 0 */
+#define SYSCPOFFSR(x)	(0x808 + ((x) * 0x4)) /* Power-OFF Status Register */
+#define SYSCISCR(x)	(0x810 + ((x) * 0x4)) /* Interrupt Status/Clear Register */
+#define SYSCIER(x)	(0x820 + ((x) * 0x4)) /* Interrupt Enable Register */
+#define SYSCIMR(x)	(0x830 + ((x) * 0x4)) /* Interrupt Mask Register */
+
+/* Power Domain Registers */
+#define PDRSR(n)	(0x1000 + ((n) * 0x40))
+#define PDRONCR(n)	(0x1004 + ((n) * 0x40))
+#define PDROFFCR(n)	(0x1008 + ((n) * 0x40))
+#define PDRESR(n)	(0x100C + ((n) * 0x40))
+
+/* PWRON/PWROFF */
+#define PWRON_PWROFF		BIT(0)	/* Power-ON/OFF request */
+
+/* PDRESR */
+#define PDRESR_ERR		BIT(0)
+
+/* PDRSR */
+#define PDRSR_OFF		BIT(0)	/* Power-OFF state */
+#define PDRSR_ON		BIT(4)	/* Power-ON state */
+#define PDRSR_OFF_STATE		BIT(8)  /* Processing Power-OFF sequence */
+#define PDRSR_ON_STATE		BIT(12) /* Processing Power-ON sequence */
+
+#define SYSCSR_BUSY		GENMASK(1, 0)	/* All bit sets is not busy */
+
+#define SYSCSR_TIMEOUT		10000
+#define SYSCSR_DELAY_US		10
+
+#define PDRESR_RETRIES		1000
+#define PDRESR_DELAY_US		10
+
+#define SYSCISR_TIMEOUT		10000
+#define SYSCISR_DELAY_US	10
+
+#define RCAR_GEN4_PD_ALWAYS_ON	64
+#define NUM_DOMAINS_EACH_REG	BITS_PER_TYPE(u32)
+
+static void __iomem *rcar_gen4_sysc_base;
+static DEFINE_SPINLOCK(rcar_gen4_sysc_lock); /* SMP CPUs + I/O devices */
+
+static int rcar_gen4_sysc_pwr_on_off(u8 pdr, bool on)
+{
+	unsigned int reg_offs;
+	u32 val;
+	int ret;
+
+	if (on)
+		reg_offs = PDRONCR(pdr);
+	else
+		reg_offs = PDROFFCR(pdr);
+
+	/* Wait until SYSC is ready to accept a power request */
+	ret = readl_poll_timeout_atomic(rcar_gen4_sysc_base + SYSCSR, val,
+					(val & SYSCSR_BUSY) == SYSCSR_BUSY,
+					SYSCSR_DELAY_US, SYSCSR_TIMEOUT);
+	if (ret < 0)
+		return -EAGAIN;
+
+	/* Submit power shutoff or power resume request */
+	iowrite32(PWRON_PWROFF, rcar_gen4_sysc_base + reg_offs);
+
+	return 0;
+}
+
+static int clear_irq_flags(unsigned int reg_idx, unsigned int isr_mask)
+{
+	u32 val;
+	int ret;
+
+	iowrite32(isr_mask, rcar_gen4_sysc_base + SYSCISCR(reg_idx));
+
+	ret = readl_poll_timeout_atomic(rcar_gen4_sysc_base + SYSCISCR(reg_idx),
+					val, !(val & isr_mask),
+					SYSCISR_DELAY_US, SYSCISR_TIMEOUT);
+	if (ret < 0) {
+		pr_err("\n %s : Can not clear IRQ flags in SYSCISCR", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int rcar_gen4_sysc_power(u8 pdr, bool on)
+{
+	unsigned int isr_mask;
+	unsigned int reg_idx, bit_idx;
+	unsigned int status;
+	unsigned long flags;
+	int ret = 0;
+	u32 val;
+	int k;
+
+	spin_lock_irqsave(&rcar_gen4_sysc_lock, flags);
+
+	reg_idx = pdr / NUM_DOMAINS_EACH_REG;
+	bit_idx = pdr % NUM_DOMAINS_EACH_REG;
+
+	isr_mask = BIT(bit_idx);
+
+	/*
+	 * The interrupt source needs to be enabled, but masked, to prevent the
+	 * CPU from receiving it.
+	 */
+	iowrite32(ioread32(rcar_gen4_sysc_base + SYSCIER(reg_idx)) | isr_mask,
+		  rcar_gen4_sysc_base + SYSCIER(reg_idx));
+	iowrite32(ioread32(rcar_gen4_sysc_base + SYSCIMR(reg_idx)) | isr_mask,
+		  rcar_gen4_sysc_base + SYSCIMR(reg_idx));
+
+	ret = clear_irq_flags(reg_idx, isr_mask);
+	if (ret)
+		goto out;
+
+	/* Submit power shutoff or resume request until it was accepted */
+	for (k = 0; k < PDRESR_RETRIES; k++) {
+		ret = rcar_gen4_sysc_pwr_on_off(pdr, on);
+		if (ret)
+			goto out;
+
+		status = ioread32(rcar_gen4_sysc_base + PDRESR(pdr));
+		if (!(status & PDRESR_ERR))
+			break;
+
+		udelay(PDRESR_DELAY_US);
+	}
+
+	if (k == PDRESR_RETRIES) {
+		ret = -EIO;
+		goto out;
+	}
+
+	/* Wait until the power shutoff or resume request has completed * */
+	ret = readl_poll_timeout_atomic(rcar_gen4_sysc_base + SYSCISCR(reg_idx),
+					val, (val & isr_mask),
+					SYSCISR_DELAY_US, SYSCISR_TIMEOUT);
+	if (ret < 0) {
+		ret = -EIO;
+		goto out;
+	}
+
+	/* Clear interrupt flags */
+	ret = clear_irq_flags(reg_idx, isr_mask);
+	if (ret)
+		goto out;
+
+ out:
+	spin_unlock_irqrestore(&rcar_gen4_sysc_lock, flags);
+
+	pr_debug("sysc power %s domain %d: %08x -> %d\n", on ? "on" : "off",
+		 pdr, ioread32(rcar_gen4_sysc_base + SYSCISCR(reg_idx)), ret);
+	return ret;
+}
+
+static bool rcar_gen4_sysc_power_is_off(u8 pdr)
+{
+	unsigned int st;
+
+	st = ioread32(rcar_gen4_sysc_base + PDRSR(pdr));
+
+	if (st & PDRSR_OFF)
+		return true;
+
+	return false;
+}
+
+struct rcar_gen4_sysc_pd {
+	struct generic_pm_domain genpd;
+	u8 pdr;
+	unsigned int flags;
+	char name[];
+};
+
+static inline struct rcar_gen4_sysc_pd *to_rcar_gen4_pd(struct generic_pm_domain *d)
+{
+	return container_of(d, struct rcar_gen4_sysc_pd, genpd);
+}
+
+static int rcar_gen4_sysc_pd_power_off(struct generic_pm_domain *genpd)
+{
+	struct rcar_gen4_sysc_pd *pd = to_rcar_gen4_pd(genpd);
+
+	pr_debug("%s: %s\n", __func__, genpd->name);
+	return rcar_gen4_sysc_power(pd->pdr, false);
+}
+
+static int rcar_gen4_sysc_pd_power_on(struct generic_pm_domain *genpd)
+{
+	struct rcar_gen4_sysc_pd *pd = to_rcar_gen4_pd(genpd);
+
+	pr_debug("%s: %s\n", __func__, genpd->name);
+	return rcar_gen4_sysc_power(pd->pdr, true);
+}
+
+static int __init rcar_gen4_sysc_pd_setup(struct rcar_gen4_sysc_pd *pd)
+{
+	struct generic_pm_domain *genpd = &pd->genpd;
+	const char *name = pd->genpd.name;
+	int error;
+
+	if (pd->flags & PD_CPU) {
+		/*
+		 * This domain contains a CPU core and therefore it should
+		 * only be turned off if the CPU is not in use.
+		 */
+		pr_debug("PM domain %s contains %s\n", name, "CPU");
+		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
+	} else if (pd->flags & PD_SCU) {
+		/*
+		 * This domain contains an SCU and cache-controller, and
+		 * therefore it should only be turned off if the CPU cores are
+		 * not in use.
+		 */
+		pr_debug("PM domain %s contains %s\n", name, "SCU");
+		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
+	} else if (pd->flags & PD_NO_CR) {
+		/*
+		 * This domain cannot be turned off.
+		 */
+		genpd->flags |= GENPD_FLAG_ALWAYS_ON;
+	}
+
+	if (!(pd->flags & (PD_CPU | PD_SCU))) {
+		/* Enable Clock Domain for I/O devices */
+		genpd->flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP;
+		genpd->attach_dev = cpg_mssr_attach_dev;
+		genpd->detach_dev = cpg_mssr_detach_dev;
+	}
+
+	genpd->power_off = rcar_gen4_sysc_pd_power_off;
+	genpd->power_on = rcar_gen4_sysc_pd_power_on;
+
+	if (pd->flags & (PD_CPU | PD_NO_CR)) {
+		/* Skip CPUs (handled by SMP code) and areas without control */
+		pr_debug("%s: Not touching %s\n", __func__, genpd->name);
+		goto finalize;
+	}
+
+	if (!rcar_gen4_sysc_power_is_off(pd->pdr)) {
+		pr_debug("%s: %s is already powered\n", __func__, genpd->name);
+		goto finalize;
+	}
+
+	rcar_gen4_sysc_power(pd->pdr, true);
+
+finalize:
+	error = pm_genpd_init(genpd, &simple_qos_governor, false);
+	if (error)
+		pr_err("Failed to init PM domain %s: %d\n", name, error);
+
+	return error;
+}
+
+static const struct of_device_id rcar_gen4_sysc_matches[] __initconst = {
+#ifdef CONFIG_SYSC_R8A779A0
+	{ .compatible = "renesas,r8a779a0-sysc", .data = &r8a779a0_sysc_info },
+#endif
+#ifdef CONFIG_SYSC_R8A779F0
+	{ .compatible = "renesas,r8a779f0-sysc", .data = &r8a779f0_sysc_info },
+#endif
+	{ /* sentinel */ }
+};
+
+struct rcar_gen4_pm_domains {
+	struct genpd_onecell_data onecell_data;
+	struct generic_pm_domain *domains[RCAR_GEN4_PD_ALWAYS_ON + 1];
+};
+
+static struct genpd_onecell_data *rcar_gen4_sysc_onecell_data;
+
+static int __init rcar_gen4_sysc_pd_init(void)
+{
+	const struct rcar_gen4_sysc_info *info;
+	const struct of_device_id *match;
+	struct rcar_gen4_pm_domains *domains;
+	struct device_node *np;
+	void __iomem *base;
+	unsigned int i;
+	int error;
+
+	np = of_find_matching_node_and_match(NULL, rcar_gen4_sysc_matches, &match);
+	if (!np)
+		return -ENODEV;
+
+	info = match->data;
+
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_warn("%pOF: Cannot map regs\n", np);
+		error = -ENOMEM;
+		goto out_put;
+	}
+
+	rcar_gen4_sysc_base = base;
+
+	domains = kzalloc(sizeof(*domains), GFP_KERNEL);
+	if (!domains) {
+		error = -ENOMEM;
+		goto out_put;
+	}
+
+	domains->onecell_data.domains = domains->domains;
+	domains->onecell_data.num_domains = ARRAY_SIZE(domains->domains);
+	rcar_gen4_sysc_onecell_data = &domains->onecell_data;
+
+	for (i = 0; i < info->num_areas; i++) {
+		const struct rcar_gen4_sysc_area *area = &info->areas[i];
+		struct rcar_gen4_sysc_pd *pd;
+		size_t n;
+
+		if (!area->name) {
+			/* Skip NULLified area */
+			continue;
+		}
+
+		n = strlen(area->name) + 1;
+		pd = kzalloc(sizeof(*pd) + n, GFP_KERNEL);
+		if (!pd) {
+			error = -ENOMEM;
+			goto out_put;
+		}
+
+		memcpy(pd->name, area->name, n);
+		pd->genpd.name = pd->name;
+		pd->pdr = area->pdr;
+		pd->flags = area->flags;
+
+		error = rcar_gen4_sysc_pd_setup(pd);
+		if (error)
+			goto out_put;
+
+		domains->domains[area->pdr] = &pd->genpd;
+
+		if (area->parent < 0)
+			continue;
+
+		error = pm_genpd_add_subdomain(domains->domains[area->parent],
+					       &pd->genpd);
+		if (error) {
+			pr_warn("Failed to add PM subdomain %s to parent %u\n",
+				area->name, area->parent);
+			goto out_put;
+		}
+	}
+
+	error = of_genpd_add_provider_onecell(np, &domains->onecell_data);
+
+out_put:
+	of_node_put(np);
+	return error;
+}
+early_initcall(rcar_gen4_sysc_pd_init);

drivers/soc/renesas/rcar-gen4-sysc.h

@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * R-Car Gen4 System Controller
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+#ifndef __SOC_RENESAS_RCAR_GEN4_SYSC_H__
+#define __SOC_RENESAS_RCAR_GEN4_SYSC_H__
+
+#include <linux/types.h>
+
+/*
+ * Power Domain flags
+ */
+#define PD_CPU		BIT(0)	/* Area contains main CPU core */
+#define PD_SCU		BIT(1)	/* Area contains SCU and L2 cache */
+#define PD_NO_CR	BIT(2)	/* Area lacks PWR{ON,OFF}CR registers */
+
+#define PD_CPU_NOCR	(PD_CPU | PD_NO_CR) /* CPU area lacks CR */
+#define PD_ALWAYS_ON	PD_NO_CR	  /* Always-on area */
+
+/*
+ * Description of a Power Area
+ */
+struct rcar_gen4_sysc_area {
+	const char *name;
+	u8 pdr;			/* PDRn */
+	int parent;		/* -1 if none */
+	unsigned int flags;	/* See PD_* */
+};
+
+/*
+ * SoC-specific Power Area Description
+ */
+struct rcar_gen4_sysc_info {
+	const struct rcar_gen4_sysc_area *areas;
+	unsigned int num_areas;
+};
+
+extern const struct rcar_gen4_sysc_info r8a779a0_sysc_info;
+extern const struct rcar_gen4_sysc_info r8a779f0_sysc_info;
+
+#endif /* __SOC_RENESAS_RCAR_GEN4_SYSC_H__ */

drivers/soc/renesas/rcar-rst.c

@@ -13,15 +13,43 @@
 #define WDTRSTCR_RESET		0xA55A0002
 #define WDTRSTCR		0x0054
 
+#define CR7BAR			0x0070
+#define CR7BAREN		BIT(4)
+#define CR7BAR_MASK		0xFFFC0000
+
+static void __iomem *rcar_rst_base;
+static u32 saved_mode __initdata;
+static int (*rcar_rst_set_rproc_boot_addr_func)(u64 boot_addr);
+
 static int rcar_rst_enable_wdt_reset(void __iomem *base)
 {
 	iowrite32(WDTRSTCR_RESET, base + WDTRSTCR);
 	return 0;
 }
 
+/*
+ * Most of the R-Car Gen3 SoCs have an ARM Realtime Core.
+ * Firmware boot address has to be set in CR7BAR before
+ * starting the realtime core.
+ * Boot address must be aligned on a 256k boundary.
+ */
+static int rcar_rst_set_gen3_rproc_boot_addr(u64 boot_addr)
+{
+	if (boot_addr & ~(u64)CR7BAR_MASK) {
+		pr_err("Invalid boot address got %llx\n", boot_addr);
+		return -EINVAL;
+	}
+
+	iowrite32(boot_addr, rcar_rst_base + CR7BAR);
+	iowrite32(boot_addr | CR7BAREN, rcar_rst_base + CR7BAR);
+
+	return 0;
+}
+
 struct rst_config {
 	unsigned int modemr;		/* Mode Monitoring Register Offset */
 	int (*configure)(void __iomem *base);	/* Platform specific config */
+	int (*set_rproc_boot_addr)(u64 boot_addr);
 };
 
 static const struct rst_config rcar_rst_gen1 __initconst = {
@@ -35,9 +63,10 @@ static const struct rst_config rcar_rst_gen2 __initconst = {
 
 static const struct rst_config rcar_rst_gen3 __initconst = {
 	.modemr = 0x60,
+	.set_rproc_boot_addr = rcar_rst_set_gen3_rproc_boot_addr,
 };
 
-static const struct rst_config rcar_rst_r8a779a0 __initconst = {
+static const struct rst_config rcar_rst_gen4 __initconst = {
 	.modemr = 0x00,		/* MODEMR0 and it has CPG related bits */
 };
 
@@ -71,14 +100,12 @@ static const struct of_device_id rcar_rst_matches[] __initconst = {
 	{ .compatible = "renesas,r8a77980-rst", .data = &rcar_rst_gen3 },
 	{ .compatible = "renesas,r8a77990-rst", .data = &rcar_rst_gen3 },
 	{ .compatible = "renesas,r8a77995-rst", .data = &rcar_rst_gen3 },
-	/* R-Car V3U */
+	/* R-Car Gen4 */
-	{ .compatible = "renesas,r8a779a0-rst", .data = &rcar_rst_r8a779a0 },
+	{ .compatible = "renesas,r8a779a0-rst", .data = &rcar_rst_gen4 },
+	{ .compatible = "renesas,r8a779f0-rst", .data = &rcar_rst_gen4 },
 	{ /* sentinel */ }
 };
 
-static void __iomem *rcar_rst_base __initdata;
-static u32 saved_mode __initdata;
-
 static int __init rcar_rst_init(void)
 {
 	const struct of_device_id *match;
@@ -100,6 +127,8 @@ static int __init rcar_rst_init(void)
 
 	rcar_rst_base = base;
 	cfg = match->data;
+	rcar_rst_set_rproc_boot_addr_func = cfg->set_rproc_boot_addr;
+
 	saved_mode = ioread32(base + cfg->modemr);
 	if (cfg->configure) {
 		error = cfg->configure(base);
@@ -130,3 +159,12 @@ int __init rcar_rst_read_mode_pins(u32 *mode)
 	*mode = saved_mode;
 	return 0;
 }
+
+int rcar_rst_set_rproc_boot_addr(u64 boot_addr)
+{
+	if (!rcar_rst_set_rproc_boot_addr_func)
+		return -EIO;
+
+	return rcar_rst_set_rproc_boot_addr_func(boot_addr);
+}
+EXPORT_SYMBOL_GPL(rcar_rst_set_rproc_boot_addr);

drivers/soc/renesas/renesas-soc.c

@@ -33,6 +33,10 @@ static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
 	.reg	= 0xfff00044,		/* PRR (Product Register) */
 };
 
+static const struct renesas_family fam_rcar_gen4 __initconst __maybe_unused = {
+	.name	= "R-Car Gen4",
+};
+
 static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
 	.name	= "R-Mobile",
 	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
@@ -214,6 +218,11 @@ static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
 	.id	= 0x59,
 };
 
+static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen4,
+	.id	= 0x5a,
+};
+
 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
 	.family	= &fam_shmobile,
 	.id	= 0x37,
@@ -319,6 +328,9 @@ static const struct of_device_id renesas_socs[] __initconst = {
 #ifdef CONFIG_ARCH_R8A779A0
 	{ .compatible = "renesas,r8a779a0",	.data = &soc_rcar_v3u },
 #endif
+#ifdef CONFIG_ARCH_R8A779F0
+	{ .compatible = "renesas,r8a779f0",	.data = &soc_rcar_s4 },
+#endif
 #if defined(CONFIG_ARCH_R9A07G044)
 	{ .compatible = "renesas,r9a07g044",	.data = &soc_rz_g2l },
 #endif
@@ -328,94 +340,92 @@ static const struct of_device_id renesas_socs[] __initconst = {
 	{ /* sentinel */ }
 };
 
+struct renesas_id {
+	unsigned int offset;
+	u32 mask;
+};
+
+static const struct renesas_id id_bsid __initconst = {
+	.offset = 0,
+	.mask = 0xff0000,
+	/*
+	 * TODO: Upper 4 bits of BSID are for chip version, but the format is
+	 * not known at this time so we don't know how to specify eshi and eslo
+	 */
+};
+
+static const struct renesas_id id_rzg2l __initconst = {
+	.offset = 0xa04,
+	.mask = 0xfffffff,
+};
+
+static const struct renesas_id id_prr __initconst = {
+	.offset = 0,
+	.mask = 0xff00,
+};
+
+static const struct of_device_id renesas_ids[] __initconst = {
+	{ .compatible = "renesas,bsid",			.data = &id_bsid },
+	{ .compatible = "renesas,r9a07g044-sysc",	.data = &id_rzg2l },
+	{ .compatible = "renesas,prr",			.data = &id_prr },
+	{ /* sentinel */ }
+};
+
 static int __init renesas_soc_init(void)
 {
 	struct soc_device_attribute *soc_dev_attr;
+	unsigned int product, eshi = 0, eslo;
 	const struct renesas_family *family;
 	const struct of_device_id *match;
 	const struct renesas_soc *soc;
+	const struct renesas_id *id;
 	void __iomem *chipid = NULL;
 	struct soc_device *soc_dev;
 	struct device_node *np;
-	unsigned int product, eshi = 0, eslo;
+	const char *soc_id;
 
 	match = of_match_node(renesas_socs, of_root);
 	if (!match)
 		return -ENODEV;
 
+	soc_id = strchr(match->compatible, ',') + 1;
 	soc = match->data;
 	family = soc->family;
 
-	np = of_find_compatible_node(NULL, NULL, "renesas,bsid");
+	np = of_find_matching_node_and_match(NULL, renesas_ids, &match);
-	if (np) {
-		chipid = of_iomap(np, 0);
-		of_node_put(np);
-
-		if (chipid) {
-			product = readl(chipid);
-			iounmap(chipid);
-
-			if (soc->id && ((product >> 16) & 0xff) != soc->id) {
-				pr_warn("SoC mismatch (product = 0x%x)\n",
-					product);
-				return -ENODEV;
-			}
-		}
-
-		/*
-		 * TODO: Upper 4 bits of BSID are for chip version, but the
-		 * format is not known at this time so we don't know how to
-		 * specify eshi and eslo
-		 */
-
-		goto done;
-	}
-
-	np = of_find_compatible_node(NULL, NULL, "renesas,r9a07g044-sysc");
-	if (np) {
-		chipid = of_iomap(np, 0);
-		of_node_put(np);
-
-		if (chipid) {
-			product = readl(chipid + 0x0a04);
-			iounmap(chipid);
-
-			if (soc->id && (product & 0xfffffff) != soc->id) {
-				pr_warn("SoC mismatch (product = 0x%x)\n",
-					product);
-				return -ENODEV;
-			}
-		}
-
-		goto done;
-	}
-
-	/* Try PRR first, then hardcoded fallback */
-	np = of_find_compatible_node(NULL, NULL, "renesas,prr");
 	if (np) {
+		id = match->data;
 		chipid = of_iomap(np, 0);
 		of_node_put(np);
 	} else if (soc->id && family->reg) {
+		/* Try hardcoded CCCR/PRR fallback */
+		id = &id_prr;
 		chipid = ioremap(family->reg, 4);
 	}
+
 	if (chipid) {
-		product = readl(chipid);
+		product = readl(chipid + id->offset);
 		iounmap(chipid);
+
+		if (id == &id_prr) {
 			/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
 			if ((product & 0x7fff) == 0x5210)
 				product ^= 0x11;
 			/* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
 			if ((product & 0x7fff) == 0x5211)
 				product ^= 0x12;
-		if (soc->id && ((product >> 8) & 0xff) != soc->id) {
+
-			pr_warn("SoC mismatch (product = 0x%x)\n", product);
-			return -ENODEV;
-		}
 			eshi = ((product >> 4) & 0x0f) + 1;
 			eslo = product & 0xf;
 		}
 
-done:
+		if (soc->id &&
+		    ((product & id->mask) >> __ffs(id->mask)) != soc->id) {
+			pr_warn("SoC mismatch (product = 0x%x)\n", product);
+			return -ENODEV;
+		}
+	}
+
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
 	if (!soc_dev_attr)
 		return -ENOMEM;
@@ -425,8 +435,7 @@ done:
 	of_node_put(np);
 
 	soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
-	soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
+	soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL);
-					     GFP_KERNEL);
 	if (eshi)
 		soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi,
 						   eslo);

drivers/soc/samsung/Kconfig

@@ -23,6 +23,20 @@ config EXYNOS_CHIPID
 	  Support for Samsung Exynos SoC ChipID and Adaptive Supply Voltage.
 	  This driver can also be built as module (exynos_chipid).
 
+config EXYNOS_USI
+	tristate "Exynos USI (Universal Serial Interface) driver"
+	default ARCH_EXYNOS && ARM64
+	depends on ARCH_EXYNOS || COMPILE_TEST
+	select MFD_SYSCON
+	help
+	  Enable support for USI block. USI (Universal Serial Interface) is an
+	  IP-core found in modern Samsung Exynos SoCs, like Exynos850 and
+	  ExynosAutoV0. USI block can be configured to provide one of the
+	  following serial protocols: UART, SPI or High Speed I2C.
+
+	  This driver allows one to configure USI for desired protocol, which
+	  is usually done in USI node in Device Tree.
+
 config EXYNOS_PMU
 	bool "Exynos PMU controller driver" if COMPILE_TEST
 	depends on ARCH_EXYNOS || ((ARM || ARM64) && COMPILE_TEST)

drivers/soc/samsung/Makefile

@@ -4,6 +4,8 @@ obj-$(CONFIG_EXYNOS_ASV_ARM)	+= exynos5422-asv.o
 obj-$(CONFIG_EXYNOS_CHIPID)	+= exynos_chipid.o
 exynos_chipid-y			+= exynos-chipid.o exynos-asv.o
 
+obj-$(CONFIG_EXYNOS_USI)	+= exynos-usi.o
+
 obj-$(CONFIG_EXYNOS_PMU)	+= exynos-pmu.o
 
 obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS)	+= exynos3250-pmu.o exynos4-pmu.o \

drivers/soc/samsung/exynos-chipid.c

@@ -42,6 +42,7 @@ static const struct exynos_soc_id {
 	unsigned int id;
 } soc_ids[] = {
 	/* List ordered by SoC name */
+	/* Compatible with: samsung,exynos4210-chipid */
 	{ "EXYNOS3250", 0xE3472000 },
 	{ "EXYNOS4210", 0x43200000 },	/* EVT0 revision */
 	{ "EXYNOS4210", 0x43210000 },
@@ -55,6 +56,8 @@ static const struct exynos_soc_id {
 	{ "EXYNOS5440", 0xE5440000 },
 	{ "EXYNOS5800", 0xE5422000 },
 	{ "EXYNOS7420", 0xE7420000 },
+	/* Compatible with: samsung,exynos850-chipid */
+	{ "EXYNOS7885", 0xE7885000 },
 	{ "EXYNOS850", 0xE3830000 },
 	{ "EXYNOSAUTOV9", 0xAAA80000 },
 };

drivers/soc/samsung/exynos-pmu.c

@@ -94,6 +94,8 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = {
 		.compatible = "samsung,exynos5433-pmu",
 	}, {
 		.compatible = "samsung,exynos7-pmu",
+	}, {
+		.compatible = "samsung,exynos850-pmu",
 	},
 	{ /*sentinel*/ },
 };

drivers/soc/samsung/exynos-usi.c

@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 Linaro Ltd.
+ * Author: Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * Samsung Exynos USI driver (Universal Serial Interface).
+ */
+
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/soc/samsung,exynos-usi.h>
+
+/* USIv2: System Register: SW_CONF register bits */
+#define USI_V2_SW_CONF_NONE	0x0
+#define USI_V2_SW_CONF_UART	BIT(0)
+#define USI_V2_SW_CONF_SPI	BIT(1)
+#define USI_V2_SW_CONF_I2C	BIT(2)
+#define USI_V2_SW_CONF_MASK	(USI_V2_SW_CONF_UART | USI_V2_SW_CONF_SPI | \
+				 USI_V2_SW_CONF_I2C)
+
+/* USIv2: USI register offsets */
+#define USI_CON			0x04
+#define USI_OPTION		0x08
+
+/* USIv2: USI register bits */
+#define USI_CON_RESET		BIT(0)
+#define USI_OPTION_CLKREQ_ON	BIT(1)
+#define USI_OPTION_CLKSTOP_ON	BIT(2)
+
+enum exynos_usi_ver {
+	USI_VER2 = 2,
+};
+
+struct exynos_usi_variant {
+	enum exynos_usi_ver ver;	/* USI IP-core version */
+	unsigned int sw_conf_mask;	/* SW_CONF mask for all protocols */
+	size_t min_mode;		/* first index in exynos_usi_modes[] */
+	size_t max_mode;		/* last index in exynos_usi_modes[] */
+	size_t num_clks;		/* number of clocks to assert */
+	const char * const *clk_names;	/* clock names to assert */
+};
+
+struct exynos_usi {
+	struct device *dev;
+	void __iomem *regs;		/* USI register map */
+	struct clk_bulk_data *clks;	/* USI clocks */
+
+	size_t mode;			/* current USI SW_CONF mode index */
+	bool clkreq_on;			/* always provide clock to IP */
+
+	/* System Register */
+	struct regmap *sysreg;		/* System Register map */
+	unsigned int sw_conf;		/* SW_CONF register offset in sysreg */
+
+	const struct exynos_usi_variant *data;
+};
+
+struct exynos_usi_mode {
+	const char *name;		/* mode name */
+	unsigned int val;		/* mode register value */
+};
+
+static const struct exynos_usi_mode exynos_usi_modes[] = {
+	[USI_V2_NONE] =	{ .name = "none", .val = USI_V2_SW_CONF_NONE },
+	[USI_V2_UART] =	{ .name = "uart", .val = USI_V2_SW_CONF_UART },
+	[USI_V2_SPI] =	{ .name = "spi",  .val = USI_V2_SW_CONF_SPI },
+	[USI_V2_I2C] =	{ .name = "i2c",  .val = USI_V2_SW_CONF_I2C },
+};
+
+static const char * const exynos850_usi_clk_names[] = { "pclk", "ipclk" };
+static const struct exynos_usi_variant exynos850_usi_data = {
+	.ver		= USI_VER2,
+	.sw_conf_mask	= USI_V2_SW_CONF_MASK,
+	.min_mode	= USI_V2_NONE,
+	.max_mode	= USI_V2_I2C,
+	.num_clks	= ARRAY_SIZE(exynos850_usi_clk_names),
+	.clk_names	= exynos850_usi_clk_names,
+};
+
+static const struct of_device_id exynos_usi_dt_match[] = {
+	{
+		.compatible = "samsung,exynos850-usi",
+		.data = &exynos850_usi_data,
+	},
+	{ } /* sentinel */
+};
+MODULE_DEVICE_TABLE(of, exynos_usi_dt_match);
+
+/**
+ * exynos_usi_set_sw_conf - Set USI block configuration mode
+ * @usi: USI driver object
+ * @mode: Mode index
+ *
+ * Select underlying serial protocol (UART/SPI/I2C) in USI IP-core.
+ *
+ * Return: 0 on success, or negative error code on failure.
+ */
+static int exynos_usi_set_sw_conf(struct exynos_usi *usi, size_t mode)
+{
+	unsigned int val;
+	int ret;
+
+	if (mode < usi->data->min_mode || mode > usi->data->max_mode)
+		return -EINVAL;
+
+	val = exynos_usi_modes[mode].val;
+	ret = regmap_update_bits(usi->sysreg, usi->sw_conf,
+				 usi->data->sw_conf_mask, val);
+	if (ret)
+		return ret;
+
+	usi->mode = mode;
+	dev_dbg(usi->dev, "protocol: %s\n", exynos_usi_modes[usi->mode].name);
+
+	return 0;
+}
+
+/**
+ * exynos_usi_enable - Initialize USI block
+ * @usi: USI driver object
+ *
+ * USI IP-core start state is "reset" (on startup and after CPU resume). This
+ * routine enables the USI block by clearing the reset flag. It also configures
+ * HWACG behavior (needed e.g. for UART Rx). It should be performed before
+ * underlying protocol becomes functional.
+ *
+ * Return: 0 on success, or negative error code on failure.
+ */
+static int exynos_usi_enable(const struct exynos_usi *usi)
+{
+	u32 val;
+	int ret;
+
+	ret = clk_bulk_prepare_enable(usi->data->num_clks, usi->clks);
+	if (ret)
+		return ret;
+
+	/* Enable USI block */
+	val = readl(usi->regs + USI_CON);
+	val &= ~USI_CON_RESET;
+	writel(val, usi->regs + USI_CON);
+	udelay(1);
+
+	/* Continuously provide the clock to USI IP w/o gating */
+	if (usi->clkreq_on) {
+		val = readl(usi->regs + USI_OPTION);
+		val &= ~USI_OPTION_CLKSTOP_ON;
+		val |= USI_OPTION_CLKREQ_ON;
+		writel(val, usi->regs + USI_OPTION);
+	}
+
+	clk_bulk_disable_unprepare(usi->data->num_clks, usi->clks);
+
+	return ret;
+}
+
+static int exynos_usi_configure(struct exynos_usi *usi)
+{
+	int ret;
+
+	ret = exynos_usi_set_sw_conf(usi, usi->mode);
+	if (ret)
+		return ret;
+
+	if (usi->data->ver == USI_VER2)
+		return exynos_usi_enable(usi);
+
+	return 0;
+}
+
+static int exynos_usi_parse_dt(struct device_node *np, struct exynos_usi *usi)
+{
+	int ret;
+	u32 mode;
+
+	ret = of_property_read_u32(np, "samsung,mode", &mode);
+	if (ret)
+		return ret;
+	if (mode < usi->data->min_mode || mode > usi->data->max_mode)
+		return -EINVAL;
+	usi->mode = mode;
+
+	usi->sysreg = syscon_regmap_lookup_by_phandle(np, "samsung,sysreg");
+	if (IS_ERR(usi->sysreg))
+		return PTR_ERR(usi->sysreg);
+
+	ret = of_property_read_u32_index(np, "samsung,sysreg", 1,
+					 &usi->sw_conf);
+	if (ret)
+		return ret;
+
+	usi->clkreq_on = of_property_read_bool(np, "samsung,clkreq-on");
+
+	return 0;
+}
+
+static int exynos_usi_get_clocks(struct exynos_usi *usi)
+{
+	const size_t num = usi->data->num_clks;
+	struct device *dev = usi->dev;
+	size_t i;
+
+	if (num == 0)
+		return 0;
+
+	usi->clks = devm_kcalloc(dev, num, sizeof(*usi->clks), GFP_KERNEL);
+	if (!usi->clks)
+		return -ENOMEM;
+
+	for (i = 0; i < num; ++i)
+		usi->clks[i].id = usi->data->clk_names[i];
+
+	return devm_clk_bulk_get(dev, num, usi->clks);
+}
+
+static int exynos_usi_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct exynos_usi *usi;
+	int ret;
+
+	usi = devm_kzalloc(dev, sizeof(*usi), GFP_KERNEL);
+	if (!usi)
+		return -ENOMEM;
+
+	usi->dev = dev;
+	platform_set_drvdata(pdev, usi);
+
+	usi->data = of_device_get_match_data(dev);
+	if (!usi->data)
+		return -EINVAL;
+
+	ret = exynos_usi_parse_dt(np, usi);
+	if (ret)
+		return ret;
+
+	ret = exynos_usi_get_clocks(usi);
+	if (ret)
+		return ret;
+
+	if (usi->data->ver == USI_VER2) {
+		usi->regs = devm_platform_ioremap_resource(pdev, 0);
+		if (IS_ERR(usi->regs))
+			return PTR_ERR(usi->regs);
+	}
+
+	ret = exynos_usi_configure(usi);
+	if (ret)
+		return ret;
+
+	/* Make it possible to embed protocol nodes into USI np */
+	return of_platform_populate(np, NULL, NULL, dev);
+}
+
+static int __maybe_unused exynos_usi_resume_noirq(struct device *dev)
+{
+	struct exynos_usi *usi = dev_get_drvdata(dev);
+
+	return exynos_usi_configure(usi);
+}
+
+static const struct dev_pm_ops exynos_usi_pm = {
+	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(NULL, exynos_usi_resume_noirq)
+};
+
+static struct platform_driver exynos_usi_driver = {
+	.driver = {
+		.name		= "exynos-usi",
+		.pm		= &exynos_usi_pm,
+		.of_match_table	= exynos_usi_dt_match,
+	},
+	.probe = exynos_usi_probe,
+};
+module_platform_driver(exynos_usi_driver);
+
+MODULE_DESCRIPTION("Samsung USI driver");
+MODULE_AUTHOR("Sam Protsenko <semen.protsenko@linaro.org>");
+MODULE_LICENSE("GPL");

drivers/soc/tegra/common.c

@@ -10,6 +10,7 @@
 #include <linux/export.h>
 #include <linux/of.h>
 #include <linux/pm_opp.h>
+#include <linux/pm_runtime.h>
 
 #include <soc/tegra/common.h>
 #include <soc/tegra/fuse.h>
@@ -43,6 +44,7 @@ static int tegra_core_dev_init_opp_state(struct device *dev)
 {
 	unsigned long rate;
 	struct clk *clk;
+	bool rpm_enabled;
 	int err;
 
 	clk = devm_clk_get(dev, NULL);
@@ -57,8 +59,31 @@ static int tegra_core_dev_init_opp_state(struct device *dev)
 		return -EINVAL;
 	}
 
+	/*
+	 * Runtime PM of the device must be enabled in order to set up
+	 * GENPD's performance properly because GENPD core checks whether
+	 * device is suspended and this check doesn't work while RPM is
+	 * disabled. This makes sure the OPP vote below gets cached in
+	 * GENPD for the device. Instead, the vote is done the next time
+	 * the device gets runtime resumed.
+	 */
+	rpm_enabled = pm_runtime_enabled(dev);
+	if (!rpm_enabled)
+		pm_runtime_enable(dev);
+
+	/* should never happen in practice */
+	if (!pm_runtime_enabled(dev)) {
+		dev_WARN(dev, "failed to enable runtime PM\n");
+		pm_runtime_disable(dev);
+		return -EINVAL;
+	}
+
 	/* first dummy rate-setting initializes voltage vote */
 	err = dev_pm_opp_set_rate(dev, rate);
+
+	if (!rpm_enabled)
+		pm_runtime_disable(dev);
+
 	if (err) {
 		dev_err(dev, "failed to initialize OPP clock: %d\n", err);
 		return err;
@@ -111,9 +136,7 @@ int devm_tegra_core_dev_init_opp_table(struct device *dev,
 	 */
 	err = devm_pm_opp_of_add_table(dev);
 	if (err) {
-		if (err == -ENODEV)
+		if (err != -ENODEV)
-			dev_err_once(dev, "OPP table not found, please update device-tree\n");
-		else
 			dev_err(dev, "failed to add OPP table: %d\n", err);
 
 		return err;

drivers/soc/tegra/fuse/fuse-tegra.c

@@ -14,6 +14,7 @@
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 #include <linux/sys_soc.h>
 
@@ -181,6 +182,12 @@ static const struct nvmem_cell_info tegra_fuse_cells[] = {
 	},
 };
 
+static void tegra_fuse_restore(void *base)
+{
+	fuse->clk = NULL;
+	fuse->base = base;
+}
+
 static int tegra_fuse_probe(struct platform_device *pdev)
 {
 	void __iomem *base = fuse->base;
@@ -188,13 +195,16 @@ static int tegra_fuse_probe(struct platform_device *pdev)
 	struct resource *res;
 	int err;
 
+	err = devm_add_action(&pdev->dev, tegra_fuse_restore, base);
+	if (err)
+		return err;
+
 	/* take over the memory region from the early initialization */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	fuse->phys = res->start;
 	fuse->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(fuse->base)) {
 		err = PTR_ERR(fuse->base);
-		fuse->base = base;
 		return err;
 	}
 
@@ -204,19 +214,20 @@ static int tegra_fuse_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev, "failed to get FUSE clock: %ld",
 				PTR_ERR(fuse->clk));
 
-		fuse->base = base;
 		return PTR_ERR(fuse->clk);
 	}
 
 	platform_set_drvdata(pdev, fuse);
 	fuse->dev = &pdev->dev;
 
-	pm_runtime_enable(&pdev->dev);
+	err = devm_pm_runtime_enable(&pdev->dev);
+	if (err)
+		return err;
 
 	if (fuse->soc->probe) {
 		err = fuse->soc->probe(fuse);
 		if (err < 0)
-			goto restore;
+			return err;
 	}
 
 	memset(&nvmem, 0, sizeof(nvmem));
@@ -240,19 +251,37 @@ static int tegra_fuse_probe(struct platform_device *pdev)
 		err = PTR_ERR(fuse->nvmem);
 		dev_err(&pdev->dev, "failed to register NVMEM device: %d\n",
 			err);
-		goto restore;
+		return err;
+	}
+
+	fuse->rst = devm_reset_control_get_optional(&pdev->dev, "fuse");
+	if (IS_ERR(fuse->rst)) {
+		err = PTR_ERR(fuse->rst);
+		dev_err(&pdev->dev, "failed to get FUSE reset: %pe\n",
+			fuse->rst);
+		return err;
+	}
+
+	/*
+	 * FUSE clock is enabled at a boot time, hence this resume/suspend
+	 * disables the clock besides the h/w resetting.
+	 */
+	err = pm_runtime_resume_and_get(&pdev->dev);
+	if (err)
+		return err;
+
+	err = reset_control_reset(fuse->rst);
+	pm_runtime_put(&pdev->dev);
+
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to reset FUSE: %d\n", err);
+		return err;
 	}
 
 	/* release the early I/O memory mapping */
 	iounmap(base);
 
 	return 0;
-
-restore:
-	fuse->clk = NULL;
-	fuse->base = base;
-	pm_runtime_disable(&pdev->dev);
-	return err;
 }
 
 static int __maybe_unused tegra_fuse_runtime_resume(struct device *dev)

drivers/soc/tegra/fuse/fuse-tegra20.c

@@ -94,9 +94,28 @@ static bool dma_filter(struct dma_chan *chan, void *filter_param)
 	return of_device_is_compatible(np, "nvidia,tegra20-apbdma");
 }
 
+static void tegra20_fuse_release_channel(void *data)
+{
+	struct tegra_fuse *fuse = data;
+
+	dma_release_channel(fuse->apbdma.chan);
+	fuse->apbdma.chan = NULL;
+}
+
+static void tegra20_fuse_free_coherent(void *data)
+{
+	struct tegra_fuse *fuse = data;
+
+	dma_free_coherent(fuse->dev, sizeof(u32), fuse->apbdma.virt,
+			  fuse->apbdma.phys);
+	fuse->apbdma.virt = NULL;
+	fuse->apbdma.phys = 0x0;
+}
+
 static int tegra20_fuse_probe(struct tegra_fuse *fuse)
 {
 	dma_cap_mask_t mask;
+	int err;
 
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
@@ -105,13 +124,21 @@ static int tegra20_fuse_probe(struct tegra_fuse *fuse)
 	if (!fuse->apbdma.chan)
 		return -EPROBE_DEFER;
 
+	err = devm_add_action_or_reset(fuse->dev, tegra20_fuse_release_channel,
+				       fuse);
+	if (err)
+		return err;
+
 	fuse->apbdma.virt = dma_alloc_coherent(fuse->dev, sizeof(u32),
 					       &fuse->apbdma.phys,
 					       GFP_KERNEL);
-	if (!fuse->apbdma.virt) {
+	if (!fuse->apbdma.virt)
-		dma_release_channel(fuse->apbdma.chan);
 		return -ENOMEM;
-	}
+
+	err = devm_add_action_or_reset(fuse->dev, tegra20_fuse_free_coherent,
+				       fuse);
+	if (err)
+		return err;
 
 	fuse->apbdma.config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	fuse->apbdma.config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;

drivers/soc/tegra/fuse/fuse.h

@@ -43,6 +43,7 @@ struct tegra_fuse {
 	void __iomem *base;
 	phys_addr_t phys;
 	struct clk *clk;
+	struct reset_control *rst;
 
 	u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
 	u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);

drivers/soc/tegra/pmc.c

@@ -1064,10 +1064,8 @@ int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
 	return tegra_powergate_remove_clamping(id);
 }
 
-static int tegra_pmc_restart_notify(struct notifier_block *this,
+static void tegra_pmc_program_reboot_reason(const char *cmd)
-				    unsigned long action, void *data)
 {
-	const char *cmd = data;
 	u32 value;
 
 	value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0);
@@ -1085,6 +1083,25 @@ static int tegra_pmc_restart_notify(struct notifier_block *this,
 	}
 
 	tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0);
+}
+
+static int tegra_pmc_reboot_notify(struct notifier_block *this,
+				   unsigned long action, void *data)
+{
+	if (action == SYS_RESTART)
+		tegra_pmc_program_reboot_reason(data);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block tegra_pmc_reboot_notifier = {
+	.notifier_call = tegra_pmc_reboot_notify,
+};
+
+static int tegra_pmc_restart_notify(struct notifier_block *this,
+				    unsigned long action, void *data)
+{
+	u32 value;
 
 	/* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
 	value = tegra_pmc_readl(pmc, PMC_CNTRL);
@@ -1353,7 +1370,7 @@ static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
 	if (!genpd)
 		return -ENOMEM;
 
-	genpd->name = np->name;
+	genpd->name = "core";
 	genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
 	genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
 
@@ -2890,6 +2907,14 @@ static int tegra_pmc_probe(struct platform_device *pdev)
 			goto cleanup_sysfs;
 	}
 
+	err = devm_register_reboot_notifier(&pdev->dev,
+					    &tegra_pmc_reboot_notifier);
+	if (err) {
+		dev_err(&pdev->dev, "unable to register reboot notifier, %d\n",
+			err);
+		goto cleanup_debugfs;
+	}
+
 	err = register_restart_handler(&tegra_pmc_restart_handler);
 	if (err) {
 		dev_err(&pdev->dev, "unable to register restart handler, %d\n",
@@ -2963,7 +2988,7 @@ static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
 
 static const char * const tegra20_powergates[] = {
 	[TEGRA_POWERGATE_CPU] = "cpu",
-	[TEGRA_POWERGATE_3D] = "3d",
+	[TEGRA_POWERGATE_3D] = "td",
 	[TEGRA_POWERGATE_VENC] = "venc",
 	[TEGRA_POWERGATE_VDEC] = "vdec",
 	[TEGRA_POWERGATE_PCIE] = "pcie",
@@ -3071,7 +3096,7 @@ static const struct tegra_pmc_soc tegra20_pmc_soc = {
 
 static const char * const tegra30_powergates[] = {
 	[TEGRA_POWERGATE_CPU] = "cpu0",
-	[TEGRA_POWERGATE_3D] = "3d0",
+	[TEGRA_POWERGATE_3D] = "td",
 	[TEGRA_POWERGATE_VENC] = "venc",
 	[TEGRA_POWERGATE_VDEC] = "vdec",
 	[TEGRA_POWERGATE_PCIE] = "pcie",
@@ -3083,7 +3108,7 @@ static const char * const tegra30_powergates[] = {
 	[TEGRA_POWERGATE_CPU2] = "cpu2",
 	[TEGRA_POWERGATE_CPU3] = "cpu3",
 	[TEGRA_POWERGATE_CELP] = "celp",
-	[TEGRA_POWERGATE_3D1] = "3d1",
+	[TEGRA_POWERGATE_3D1] = "td2",
 };
 
 static const u8 tegra30_cpu_powergates[] = {
@@ -3132,7 +3157,7 @@ static const struct tegra_pmc_soc tegra30_pmc_soc = {
 
 static const char * const tegra114_powergates[] = {
 	[TEGRA_POWERGATE_CPU] = "crail",
-	[TEGRA_POWERGATE_3D] = "3d",
+	[TEGRA_POWERGATE_3D] = "td",
 	[TEGRA_POWERGATE_VENC] = "venc",
 	[TEGRA_POWERGATE_VDEC] = "vdec",
 	[TEGRA_POWERGATE_MPE] = "mpe",

drivers/soc/tegra/regulators-tegra20.c

@@ -16,7 +16,9 @@
 #include <linux/regulator/coupler.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/suspend.h>
 
+#include <soc/tegra/fuse.h>
 #include <soc/tegra/pmc.h>
 
 struct tegra_regulator_coupler {
@@ -25,9 +27,12 @@ struct tegra_regulator_coupler {
 	struct regulator_dev *cpu_rdev;
 	struct regulator_dev *rtc_rdev;
 	struct notifier_block reboot_notifier;
+	struct notifier_block suspend_notifier;
 	int core_min_uV, cpu_min_uV;
 	bool sys_reboot_mode_req;
 	bool sys_reboot_mode;
+	bool sys_suspend_mode_req;
+	bool sys_suspend_mode;
 };
 
 static inline struct tegra_regulator_coupler *
@@ -105,6 +110,28 @@ static int tegra20_core_rtc_max_spread(struct regulator_dev *core_rdev,
 	return 150000;
 }
 
+static int tegra20_cpu_nominal_uV(void)
+{
+	switch (tegra_sku_info.soc_speedo_id) {
+	case 0:
+		return 1100000;
+	case 1:
+		return 1025000;
+	default:
+		return 1125000;
+	}
+}
+
+static int tegra20_core_nominal_uV(void)
+{
+	switch (tegra_sku_info.soc_speedo_id) {
+	default:
+		return 1225000;
+	case 2:
+		return 1300000;
+	}
+}
+
 static int tegra20_core_rtc_update(struct tegra_regulator_coupler *tegra,
 				   struct regulator_dev *core_rdev,
 				   struct regulator_dev *rtc_rdev,
@@ -144,6 +171,11 @@ static int tegra20_core_rtc_update(struct tegra_regulator_coupler *tegra,
 	if (err)
 		return err;
 
+	/* prepare voltage level for suspend */
+	if (tegra->sys_suspend_mode)
+		core_min_uV = clamp(tegra20_core_nominal_uV(),
+				    core_min_uV, core_max_uV);
+
 	core_uV = regulator_get_voltage_rdev(core_rdev);
 	if (core_uV < 0)
 		return core_uV;
@@ -279,6 +311,11 @@ static int tegra20_cpu_voltage_update(struct tegra_regulator_coupler *tegra,
 	if (tegra->sys_reboot_mode)
 		cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV);
 
+	/* prepare voltage level for suspend */
+	if (tegra->sys_suspend_mode)
+		cpu_min_uV = clamp(tegra20_cpu_nominal_uV(),
+				   cpu_min_uV, cpu_max_uV);
+
 	if (cpu_min_uV > cpu_uV) {
 		err = tegra20_core_rtc_update(tegra, core_rdev, rtc_rdev,
 					      cpu_uV, cpu_min_uV);
@@ -320,6 +357,7 @@ static int tegra20_regulator_balance_voltage(struct regulator_coupler *coupler,
 	}
 
 	tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req);
+	tegra->sys_suspend_mode = READ_ONCE(tegra->sys_suspend_mode_req);
 
 	if (rdev == cpu_rdev)
 		return tegra20_cpu_voltage_update(tegra, cpu_rdev,
@@ -334,6 +372,63 @@ static int tegra20_regulator_balance_voltage(struct regulator_coupler *coupler,
 	return -EPERM;
 }
 
+static int tegra20_regulator_prepare_suspend(struct tegra_regulator_coupler *tegra,
+					     bool sys_suspend_mode)
+{
+	int err;
+
+	if (!tegra->core_rdev || !tegra->rtc_rdev || !tegra->cpu_rdev)
+		return 0;
+
+	/*
+	 * All power domains are enabled early during resume from suspend
+	 * by GENPD core.  Domains like VENC may require a higher voltage
+	 * when enabled during resume from suspend.  This also prepares
+	 * hardware for resuming from LP0.
+	 */
+
+	WRITE_ONCE(tegra->sys_suspend_mode_req, sys_suspend_mode);
+
+	err = regulator_sync_voltage_rdev(tegra->cpu_rdev);
+	if (err)
+		return err;
+
+	err = regulator_sync_voltage_rdev(tegra->core_rdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int tegra20_regulator_suspend(struct notifier_block *notifier,
+				     unsigned long mode, void *arg)
+{
+	struct tegra_regulator_coupler *tegra;
+	int ret = 0;
+
+	tegra = container_of(notifier, struct tegra_regulator_coupler,
+			     suspend_notifier);
+
+	switch (mode) {
+	case PM_HIBERNATION_PREPARE:
+	case PM_RESTORE_PREPARE:
+	case PM_SUSPEND_PREPARE:
+		ret = tegra20_regulator_prepare_suspend(tegra, true);
+		break;
+
+	case PM_POST_HIBERNATION:
+	case PM_POST_RESTORE:
+	case PM_POST_SUSPEND:
+		ret = tegra20_regulator_prepare_suspend(tegra, false);
+		break;
+	}
+
+	if (ret)
+		pr_err("failed to prepare regulators: %d\n", ret);
+
+	return notifier_from_errno(ret);
+}
+
 static int tegra20_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra,
 					    bool sys_reboot_mode)
 {
@@ -444,6 +539,7 @@ static struct tegra_regulator_coupler tegra20_coupler = {
 		.balance_voltage = tegra20_regulator_balance_voltage,
 	},
 	.reboot_notifier.notifier_call = tegra20_regulator_reboot,
+	.suspend_notifier.notifier_call = tegra20_regulator_suspend,
 };
 
 static int __init tegra_regulator_coupler_init(void)
@@ -456,6 +552,9 @@ static int __init tegra_regulator_coupler_init(void)
 	err = register_reboot_notifier(&tegra20_coupler.reboot_notifier);
 	WARN_ON(err);
 
+	err = register_pm_notifier(&tegra20_coupler.suspend_notifier);
+	WARN_ON(err);
+
 	return regulator_coupler_register(&tegra20_coupler.coupler);
 }
 arch_initcall(tegra_regulator_coupler_init);

drivers/soc/tegra/regulators-tegra30.c

@@ -16,6 +16,7 @@
 #include <linux/regulator/coupler.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/suspend.h>
 
 #include <soc/tegra/fuse.h>
 #include <soc/tegra/pmc.h>
@@ -25,9 +26,12 @@ struct tegra_regulator_coupler {
 	struct regulator_dev *core_rdev;
 	struct regulator_dev *cpu_rdev;
 	struct notifier_block reboot_notifier;
+	struct notifier_block suspend_notifier;
 	int core_min_uV, cpu_min_uV;
 	bool sys_reboot_mode_req;
 	bool sys_reboot_mode;
+	bool sys_suspend_mode_req;
+	bool sys_suspend_mode;
 };
 
 static inline struct tegra_regulator_coupler *
@@ -113,6 +117,52 @@ static int tegra30_core_cpu_limit(int cpu_uV)
 	return -EINVAL;
 }
 
+static int tegra30_cpu_nominal_uV(void)
+{
+	switch (tegra_sku_info.cpu_speedo_id) {
+	case 10 ... 11:
+		return  850000;
+
+	case 9:
+		return  912000;
+
+	case 1 ...  3:
+	case 7 ...  8:
+		return 1050000;
+
+	default:
+		return 1125000;
+
+	case  4 ...  6:
+	case 12 ... 13:
+		return 1237000;
+	}
+}
+
+static int tegra30_core_nominal_uV(void)
+{
+	switch (tegra_sku_info.soc_speedo_id) {
+	case 0:
+		return 1200000;
+
+	case 1:
+		if (tegra_sku_info.cpu_speedo_id != 7 &&
+		    tegra_sku_info.cpu_speedo_id != 8)
+			return 1200000;
+
+		fallthrough;
+
+	case 2:
+		if (tegra_sku_info.cpu_speedo_id != 13)
+			return 1300000;
+
+		return 1350000;
+
+	default:
+		return 1250000;
+	}
+}
+
 static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra,
 				  struct regulator_dev *cpu_rdev,
 				  struct regulator_dev *core_rdev)
@@ -168,6 +218,11 @@ static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra,
 	if (err)
 		return err;
 
+	/* prepare voltage level for suspend */
+	if (tegra->sys_suspend_mode)
+		core_min_uV = clamp(tegra30_core_nominal_uV(),
+				    core_min_uV, core_max_uV);
+
 	core_uV = regulator_get_voltage_rdev(core_rdev);
 	if (core_uV < 0)
 		return core_uV;
@@ -223,6 +278,11 @@ static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra,
 	if (tegra->sys_reboot_mode)
 		cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV);
 
+	/* prepare voltage level for suspend */
+	if (tegra->sys_suspend_mode)
+		cpu_min_uV = clamp(tegra30_cpu_nominal_uV(),
+				   cpu_min_uV, cpu_max_uV);
+
 	if (core_min_limited_uV > core_uV) {
 		pr_err("core voltage constraint violated: %d %d %d\n",
 		       core_uV, core_min_limited_uV, cpu_uV);
@@ -292,10 +352,68 @@ static int tegra30_regulator_balance_voltage(struct regulator_coupler *coupler,
 	}
 
 	tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req);
+	tegra->sys_suspend_mode = READ_ONCE(tegra->sys_suspend_mode_req);
 
 	return tegra30_voltage_update(tegra, cpu_rdev, core_rdev);
 }
 
+static int tegra30_regulator_prepare_suspend(struct tegra_regulator_coupler *tegra,
+					     bool sys_suspend_mode)
+{
+	int err;
+
+	if (!tegra->core_rdev || !tegra->cpu_rdev)
+		return 0;
+
+	/*
+	 * All power domains are enabled early during resume from suspend
+	 * by GENPD core.  Domains like VENC may require a higher voltage
+	 * when enabled during resume from suspend.  This also prepares
+	 * hardware for resuming from LP0.
+	 */
+
+	WRITE_ONCE(tegra->sys_suspend_mode_req, sys_suspend_mode);
+
+	err = regulator_sync_voltage_rdev(tegra->cpu_rdev);
+	if (err)
+		return err;
+
+	err = regulator_sync_voltage_rdev(tegra->core_rdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int tegra30_regulator_suspend(struct notifier_block *notifier,
+				     unsigned long mode, void *arg)
+{
+	struct tegra_regulator_coupler *tegra;
+	int ret = 0;
+
+	tegra = container_of(notifier, struct tegra_regulator_coupler,
+			     suspend_notifier);
+
+	switch (mode) {
+	case PM_HIBERNATION_PREPARE:
+	case PM_RESTORE_PREPARE:
+	case PM_SUSPEND_PREPARE:
+		ret = tegra30_regulator_prepare_suspend(tegra, true);
+		break;
+
+	case PM_POST_HIBERNATION:
+	case PM_POST_RESTORE:
+	case PM_POST_SUSPEND:
+		ret = tegra30_regulator_prepare_suspend(tegra, false);
+		break;
+	}
+
+	if (ret)
+		pr_err("failed to prepare regulators: %d\n", ret);
+
+	return notifier_from_errno(ret);
+}
+
 static int tegra30_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra,
 					    bool sys_reboot_mode)
 {
@@ -395,6 +513,7 @@ static struct tegra_regulator_coupler tegra30_coupler = {
 		.balance_voltage = tegra30_regulator_balance_voltage,
 	},
 	.reboot_notifier.notifier_call = tegra30_regulator_reboot,
+	.suspend_notifier.notifier_call = tegra30_regulator_suspend,
 };
 
 static int __init tegra_regulator_coupler_init(void)
@@ -407,6 +526,9 @@ static int __init tegra_regulator_coupler_init(void)
 	err = register_reboot_notifier(&tegra30_coupler.reboot_notifier);
 	WARN_ON(err);
 
+	err = register_pm_notifier(&tegra30_coupler.suspend_notifier);
+	WARN_ON(err);
+
 	return regulator_coupler_register(&tegra30_coupler.coupler);
 }
 arch_initcall(tegra_regulator_coupler_init);

drivers/soc/ti/k3-socinfo.c

@@ -40,7 +40,8 @@ static const struct k3_soc_id {
 	{ 0xBB5A, "AM65X" },
 	{ 0xBB64, "J721E" },
 	{ 0xBB6D, "J7200" },
-	{ 0xBB38, "AM64X" }
+	{ 0xBB38, "AM64X" },
+	{ 0xBB75, "J721S2"},
 };
 
 static int

drivers/soc/ti/knav_dma.c

@@ -646,31 +646,31 @@ static int dma_init(struct device_node *cloud, struct device_node *dma_node)
 	}
 
 	dma->reg_global	 = pktdma_get_regs(dma, node, 0, &size);
-	if (!dma->reg_global)
+	if (IS_ERR(dma->reg_global))
-		return -ENODEV;
+		return PTR_ERR(dma->reg_global);
 	if (size < sizeof(struct reg_global)) {
 		dev_err(kdev->dev, "bad size %pa for global regs\n", &size);
 		return -ENODEV;
 	}
 
 	dma->reg_tx_chan = pktdma_get_regs(dma, node, 1, &size);
-	if (!dma->reg_tx_chan)
+	if (IS_ERR(dma->reg_tx_chan))
-		return -ENODEV;
+		return PTR_ERR(dma->reg_tx_chan);
 
 	max_tx_chan = size / sizeof(struct reg_chan);
 	dma->reg_rx_chan = pktdma_get_regs(dma, node, 2, &size);
-	if (!dma->reg_rx_chan)
+	if (IS_ERR(dma->reg_rx_chan))
-		return -ENODEV;
+		return PTR_ERR(dma->reg_rx_chan);
 
 	max_rx_chan = size / sizeof(struct reg_chan);
 	dma->reg_tx_sched = pktdma_get_regs(dma, node, 3, &size);
-	if (!dma->reg_tx_sched)
+	if (IS_ERR(dma->reg_tx_sched))
-		return -ENODEV;
+		return PTR_ERR(dma->reg_tx_sched);
 
 	max_tx_sched = size / sizeof(struct reg_tx_sched);
 	dma->reg_rx_flow = pktdma_get_regs(dma, node, 4, &size);
-	if (!dma->reg_rx_flow)
+	if (IS_ERR(dma->reg_rx_flow))
-		return -ENODEV;
+		return PTR_ERR(dma->reg_rx_flow);
 
 	max_rx_flow = size / sizeof(struct reg_rx_flow);
 	dma->rx_priority = DMA_PRIO_DEFAULT;

drivers/soc/ti/pruss.c

@@ -129,7 +129,7 @@ static int pruss_clk_init(struct pruss *pruss, struct device_node *cfg_node)
 
 	clks_np = of_get_child_by_name(cfg_node, "clocks");
 	if (!clks_np) {
-		dev_err(dev, "%pOF is missing its 'clocks' node\n", clks_np);
+		dev_err(dev, "%pOF is missing its 'clocks' node\n", cfg_node);
 		return -ENODEV;
 	}
 

drivers/soc/xilinx/zynqmp_pm_domains.c

@@ -20,8 +20,6 @@
 #include <linux/firmware/xlnx-zynqmp.h>
 
 #define ZYNQMP_NUM_DOMAINS		(100)
-/* Flag stating if PM nodes mapped to the PM domain has been requested */
-#define ZYNQMP_PM_DOMAIN_REQUESTED	BIT(0)
 
 static int min_capability;
 
@@ -29,14 +27,17 @@ static int min_capability;
  * struct zynqmp_pm_domain - Wrapper around struct generic_pm_domain
  * @gpd:		Generic power domain
  * @node_id:		PM node ID corresponding to device inside PM domain
- * @flags:		ZynqMP PM domain flags
+ * @requested:		The PM node mapped to the PM domain has been requested
  */
 struct zynqmp_pm_domain {
 	struct generic_pm_domain gpd;
 	u32 node_id;
-	u8 flags;
+	bool requested;
 };
 
+#define to_zynqmp_pm_domain(pm_domain) \
+	container_of(pm_domain, struct zynqmp_pm_domain, gpd)
+
 /**
  * zynqmp_gpd_is_active_wakeup_path() - Check if device is in wakeup source
  *					path
@@ -71,21 +72,23 @@ static int zynqmp_gpd_is_active_wakeup_path(struct device *dev, void *not_used)
  */
 static int zynqmp_gpd_power_on(struct generic_pm_domain *domain)
 {
+	struct zynqmp_pm_domain *pd = to_zynqmp_pm_domain(domain);
 	int ret;
-	struct zynqmp_pm_domain *pd;
 
-	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
 	ret = zynqmp_pm_set_requirement(pd->node_id,
 					ZYNQMP_PM_CAPABILITY_ACCESS,
 					ZYNQMP_PM_MAX_QOS,
 					ZYNQMP_PM_REQUEST_ACK_BLOCKING);
 	if (ret) {
-		pr_err("%s() %s set requirement for node %d failed: %d\n",
+		dev_err(&domain->dev,
-		       __func__, domain->name, pd->node_id, ret);
+			"failed to set requirement to 0x%x for PM node id %d: %d\n",
+			ZYNQMP_PM_CAPABILITY_ACCESS, pd->node_id, ret);
 		return ret;
 	}
 
-	pr_debug("%s() Powered on %s domain\n", __func__, domain->name);
+	dev_dbg(&domain->dev, "set requirement to 0x%x for PM node id %d\n",
+		ZYNQMP_PM_CAPABILITY_ACCESS, pd->node_id);
+
 	return 0;
 }
 
@@ -100,18 +103,16 @@ static int zynqmp_gpd_power_on(struct generic_pm_domain *domain)
  */
 static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 {
+	struct zynqmp_pm_domain *pd = to_zynqmp_pm_domain(domain);
 	int ret;
 	struct pm_domain_data *pdd, *tmp;
-	struct zynqmp_pm_domain *pd;
 	u32 capabilities = min_capability;
 	bool may_wakeup;
 
-	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
-
 	/* If domain is already released there is nothing to be done */
-	if (!(pd->flags & ZYNQMP_PM_DOMAIN_REQUESTED)) {
+	if (!pd->requested) {
-		pr_debug("%s() %s domain is already released\n",
+		dev_dbg(&domain->dev, "PM node id %d is already released\n",
-			 __func__, domain->name);
+			pd->node_id);
 		return 0;
 	}
 
@@ -128,17 +129,16 @@ static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 
 	ret = zynqmp_pm_set_requirement(pd->node_id, capabilities, 0,
 					ZYNQMP_PM_REQUEST_ACK_NO);
-	/**
-	 * If powering down of any node inside this domain fails,
-	 * report and return the error
-	 */
 	if (ret) {
-		pr_err("%s() %s set requirement for node %d failed: %d\n",
+		dev_err(&domain->dev,
-		       __func__, domain->name, pd->node_id, ret);
+			"failed to set requirement to 0x%x for PM node id %d: %d\n",
+			capabilities, pd->node_id, ret);
 		return ret;
 	}
 
-	pr_debug("%s() Powered off %s domain\n", __func__, domain->name);
+	dev_dbg(&domain->dev, "set requirement to 0x%x for PM node id %d\n",
+		capabilities, pd->node_id);
+
 	return 0;
 }
 
@@ -152,10 +152,14 @@ static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 static int zynqmp_gpd_attach_dev(struct generic_pm_domain *domain,
 				 struct device *dev)
 {
+	struct zynqmp_pm_domain *pd = to_zynqmp_pm_domain(domain);
+	struct device_link *link;
 	int ret;
-	struct zynqmp_pm_domain *pd;
 
-	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
+	link = device_link_add(dev, &domain->dev, DL_FLAG_SYNC_STATE_ONLY);
+	if (!link)
+		dev_dbg(&domain->dev, "failed to create device link for %s\n",
+			dev_name(dev));
 
 	/* If this is not the first device to attach there is nothing to do */
 	if (domain->device_count)
@@ -163,17 +167,17 @@ static int zynqmp_gpd_attach_dev(struct generic_pm_domain *domain,
 
 	ret = zynqmp_pm_request_node(pd->node_id, 0, 0,
 				     ZYNQMP_PM_REQUEST_ACK_BLOCKING);
-	/* If requesting a node fails print and return the error */
 	if (ret) {
-		pr_err("%s() %s request failed for node %d: %d\n",
+		dev_err(&domain->dev, "%s request failed for node %d: %d\n",
-		       __func__, domain->name, pd->node_id, ret);
+			domain->name, pd->node_id, ret);
 		return ret;
 	}
 
-	pd->flags |= ZYNQMP_PM_DOMAIN_REQUESTED;
+	pd->requested = true;
+
+	dev_dbg(&domain->dev, "%s requested PM node id %d\n",
+		dev_name(dev), pd->node_id);
 
-	pr_debug("%s() %s attached to %s domain\n", __func__,
-		 dev_name(dev), domain->name);
 	return 0;
 }
 
@@ -185,27 +189,24 @@ static int zynqmp_gpd_attach_dev(struct generic_pm_domain *domain,
 static void zynqmp_gpd_detach_dev(struct generic_pm_domain *domain,
 				  struct device *dev)
 {
+	struct zynqmp_pm_domain *pd = to_zynqmp_pm_domain(domain);
 	int ret;
-	struct zynqmp_pm_domain *pd;
-
-	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
 
 	/* If this is not the last device to detach there is nothing to do */
 	if (domain->device_count)
 		return;
 
 	ret = zynqmp_pm_release_node(pd->node_id);
-	/* If releasing a node fails print the error and return */
 	if (ret) {
-		pr_err("%s() %s release failed for node %d: %d\n",
+		dev_err(&domain->dev, "failed to release PM node id %d: %d\n",
-		       __func__, domain->name, pd->node_id, ret);
+			pd->node_id, ret);
 		return;
 	}
 
-	pd->flags &= ~ZYNQMP_PM_DOMAIN_REQUESTED;
+	pd->requested = false;
 
-	pr_debug("%s() %s detached from %s domain\n", __func__,
+	dev_dbg(&domain->dev, "%s released PM node id %d\n",
-		 dev_name(dev), domain->name);
+		dev_name(dev), pd->node_id);
 }
 
 static struct generic_pm_domain *zynqmp_gpd_xlate
@@ -215,7 +216,7 @@ static struct generic_pm_domain *zynqmp_gpd_xlate
 	unsigned int i, idx = genpdspec->args[0];
 	struct zynqmp_pm_domain *pd;
 
-	pd = container_of(genpd_data->domains[0], struct zynqmp_pm_domain, gpd);
+	pd = to_zynqmp_pm_domain(genpd_data->domains[0]);
 
 	if (genpdspec->args_count != 1)
 		return ERR_PTR(-EINVAL);
@@ -299,9 +300,19 @@ static int zynqmp_gpd_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void zynqmp_gpd_sync_state(struct device *dev)
+{
+	int ret;
+
+	ret = zynqmp_pm_init_finalize();
+	if (ret)
+		dev_warn(dev, "failed to release power management to firmware\n");
+}
+
 static struct platform_driver zynqmp_power_domain_driver = {
 	.driver	= {
 		.name = "zynqmp_power_controller",
+		.sync_state = zynqmp_gpd_sync_state,
 	},
 	.probe = zynqmp_gpd_probe,
 	.remove = zynqmp_gpd_remove,

drivers/soc/xilinx/zynqmp_power.c

@@ -178,7 +178,6 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	u32 pm_api_version;
 	struct mbox_client *client;
 
-	zynqmp_pm_init_finalize();
 	zynqmp_pm_get_api_version(&pm_api_version);
 
 	/* Check PM API version number */

drivers/spi/spi-rpc-if.c

@@ -156,7 +156,9 @@ static int rpcif_spi_probe(struct platform_device *pdev)
 	ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_TX_QUAD | SPI_RX_QUAD;
 	ctlr->flags = SPI_CONTROLLER_HALF_DUPLEX;
 
-	rpcif_hw_init(rpc, false);
+	error = rpcif_hw_init(rpc, false);
+	if (error)
+		return error;
 
 	error = spi_register_controller(ctlr);
 	if (error) {

drivers/spi/spi-tegra20-slink.c

@@ -18,12 +18,15 @@
 #include <linux/kthread.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/pm_opp.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/reset.h>
 #include <linux/spi/spi.h>
 
+#include <soc/tegra/common.h>
+
 #define SLINK_COMMAND			0x000
 #define SLINK_BIT_LENGTH(x)		(((x) & 0x1f) << 0)
 #define SLINK_WORD_SIZE(x)		(((x) & 0x1f) << 5)
@@ -680,7 +683,7 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi,
 	bits_per_word = t->bits_per_word;
 	speed = t->speed_hz;
 	if (speed != tspi->cur_speed) {
-		clk_set_rate(tspi->clk, speed * 4);
+		dev_pm_opp_set_rate(tspi->dev, speed * 4);
 		tspi->cur_speed = speed;
 	}
 
@@ -1066,6 +1069,10 @@ static int tegra_slink_probe(struct platform_device *pdev)
 		goto exit_free_master;
 	}
 
+	ret = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
+	if (ret)
+		goto exit_free_master;
+
 	tspi->max_buf_size = SLINK_FIFO_DEPTH << 2;
 	tspi->dma_buf_size = DEFAULT_SPI_DMA_BUF_LEN;
 

drivers/staging/media/tegra-vde/vde.c

@@ -20,6 +20,7 @@
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 
+#include <soc/tegra/common.h>
 #include <soc/tegra/pmc.h>
 
 #include "uapi.h"
@@ -920,13 +921,17 @@ static __maybe_unused int tegra_vde_runtime_suspend(struct device *dev)
 	struct tegra_vde *vde = dev_get_drvdata(dev);
 	int err;
 
+	if (!dev->pm_domain) {
 		err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC);
 		if (err) {
 			dev_err(dev, "Failed to power down HW: %d\n", err);
 			return err;
 		}
+	}
 
 	clk_disable_unprepare(vde->clk);
+	reset_control_release(vde->rst);
+	reset_control_release(vde->rst_mc);
 
 	return 0;
 }
@@ -936,14 +941,45 @@ static __maybe_unused int tegra_vde_runtime_resume(struct device *dev)
 	struct tegra_vde *vde = dev_get_drvdata(dev);
 	int err;
 
+	err = reset_control_acquire(vde->rst_mc);
+	if (err) {
+		dev_err(dev, "Failed to acquire mc reset: %d\n", err);
+		return err;
+	}
+
+	err = reset_control_acquire(vde->rst);
+	if (err) {
+		dev_err(dev, "Failed to acquire reset: %d\n", err);
+		goto release_mc_reset;
+	}
+
+	if (!dev->pm_domain) {
 		err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC,
 							vde->clk, vde->rst);
 		if (err) {
 			dev_err(dev, "Failed to power up HW : %d\n", err);
-		return err;
+			goto release_reset;
+		}
+	} else {
+		/*
+		 * tegra_powergate_sequence_power_up() leaves clocks enabled,
+		 * while GENPD not.
+		 */
+		err = clk_prepare_enable(vde->clk);
+		if (err) {
+			dev_err(dev, "Failed to enable clock: %d\n", err);
+			goto release_reset;
+		}
 	}
 
 	return 0;
+
+release_reset:
+	reset_control_release(vde->rst);
+release_mc_reset:
+	reset_control_release(vde->rst_mc);
+
+	return err;
 }
 
 static int tegra_vde_probe(struct platform_device *pdev)
@@ -1001,14 +1037,14 @@ static int tegra_vde_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	vde->rst = devm_reset_control_get(dev, NULL);
+	vde->rst = devm_reset_control_get_exclusive_released(dev, NULL);
 	if (IS_ERR(vde->rst)) {
 		err = PTR_ERR(vde->rst);
 		dev_err(dev, "Could not get VDE reset %d\n", err);
 		return err;
 	}
 
-	vde->rst_mc = devm_reset_control_get_optional(dev, "mc");
+	vde->rst_mc = devm_reset_control_get_optional_exclusive_released(dev, "mc");
 	if (IS_ERR(vde->rst_mc)) {
 		err = PTR_ERR(vde->rst_mc);
 		dev_err(dev, "Could not get MC reset %d\n", err);
@@ -1026,6 +1062,12 @@ static int tegra_vde_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	err = devm_tegra_core_dev_init_opp_table_common(dev);
+	if (err) {
+		dev_err(dev, "Could initialize OPP table %d\n", err);
+		return err;
+	}
+
 	vde->iram_pool = of_gen_pool_get(dev->of_node, "iram", 0);
 	if (!vde->iram_pool) {
 		dev_err(dev, "Could not get IRAM pool\n");
@@ -1133,8 +1175,7 @@ static void tegra_vde_shutdown(struct platform_device *pdev)
 	 * On some devices bootloader isn't ready to a power-gated VDE on
 	 * a warm-reboot, machine will hang in that case.
 	 */
-	if (pm_runtime_status_suspended(&pdev->dev))
+	pm_runtime_get_sync(&pdev->dev);
-		tegra_vde_runtime_resume(&pdev->dev);
 }
 
 static __maybe_unused int tegra_vde_pm_suspend(struct device *dev)

drivers/tee/optee/Makefile

@@ -2,6 +2,7 @@
 obj-$(CONFIG_OPTEE) += optee.o
 optee-objs += core.o
 optee-objs += call.o
+optee-objs += notif.o
 optee-objs += rpc.o
 optee-objs += supp.o
 optee-objs += device.o

drivers/tee/optee/core.c

@@ -157,6 +157,7 @@ void optee_remove_common(struct optee *optee)
 	/* Unregister OP-TEE specific client devices on TEE bus */
 	optee_unregister_devices();
 
+	optee_notif_uninit(optee);
 	/*
 	 * The two devices have to be unregistered before we can free the
 	 * other resources.
@@ -165,7 +166,6 @@ void optee_remove_common(struct optee *optee)
 	tee_device_unregister(optee->teedev);
 
 	tee_shm_pool_free(optee->pool);
-	optee_wait_queue_exit(&optee->wait_queue);
 	optee_supp_uninit(&optee->supp);
 	mutex_destroy(&optee->call_queue.mutex);
 }

drivers/tee/optee/ffa_abi.c

@@ -855,9 +855,13 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
 	mutex_init(&optee->ffa.mutex);
 	mutex_init(&optee->call_queue.mutex);
 	INIT_LIST_HEAD(&optee->call_queue.waiters);
-	optee_wait_queue_init(&optee->wait_queue);
 	optee_supp_init(&optee->supp);
 	ffa_dev_set_drvdata(ffa_dev, optee);
+	rc = optee_notif_init(optee, OPTEE_DEFAULT_MAX_NOTIF_VALUE);
+	if (rc) {
+		optee_ffa_remove(ffa_dev);
+		return rc;
+	}
 
 	rc = optee_enumerate_devices(PTA_CMD_GET_DEVICES);
 	if (rc) {

drivers/tee/optee/notif.c

@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015-2021, Linaro Limited
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/arm-smccc.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/tee_drv.h>
+#include "optee_private.h"
+
+struct notif_entry {
+	struct list_head link;
+	struct completion c;
+	u_int key;
+};
+
+static bool have_key(struct optee *optee, u_int key)
+{
+	struct notif_entry *entry;
+
+	list_for_each_entry(entry, &optee->notif.db, link)
+		if (entry->key == key)
+			return true;
+
+	return false;
+}
+
+int optee_notif_wait(struct optee *optee, u_int key)
+{
+	unsigned long flags;
+	struct notif_entry *entry;
+	int rc = 0;
+
+	if (key > optee->notif.max_key)
+		return -EINVAL;
+
+	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+	init_completion(&entry->c);
+	entry->key = key;
+
+	spin_lock_irqsave(&optee->notif.lock, flags);
+
+	/*
+	 * If the bit is already set it means that the key has already
+	 * been posted and we must not wait.
+	 */
+	if (test_bit(key, optee->notif.bitmap)) {
+		clear_bit(key, optee->notif.bitmap);
+		goto out;
+	}
+
+	/*
+	 * Check if someone is already waiting for this key. If there is
+	 * it's a programming error.
+	 */
+	if (have_key(optee, key)) {
+		rc = -EBUSY;
+		goto out;
+	}
+
+	list_add_tail(&entry->link, &optee->notif.db);
+
+	/*
+	 * Unlock temporarily and wait for completion.
+	 */
+	spin_unlock_irqrestore(&optee->notif.lock, flags);
+	wait_for_completion(&entry->c);
+	spin_lock_irqsave(&optee->notif.lock, flags);
+
+	list_del(&entry->link);
+out:
+	spin_unlock_irqrestore(&optee->notif.lock, flags);
+
+	kfree(entry);
+
+	return rc;
+}
+
+int optee_notif_send(struct optee *optee, u_int key)
+{
+	unsigned long flags;
+	struct notif_entry *entry;
+
+	if (key > optee->notif.max_key)
+		return -EINVAL;
+
+	spin_lock_irqsave(&optee->notif.lock, flags);
+
+	list_for_each_entry(entry, &optee->notif.db, link)
+		if (entry->key == key) {
+			complete(&entry->c);
+			goto out;
+		}
+
+	/* Only set the bit in case there where nobody waiting */
+	set_bit(key, optee->notif.bitmap);
+out:
+	spin_unlock_irqrestore(&optee->notif.lock, flags);
+
+	return 0;
+}
+
+int optee_notif_init(struct optee *optee, u_int max_key)
+{
+	spin_lock_init(&optee->notif.lock);
+	INIT_LIST_HEAD(&optee->notif.db);
+	optee->notif.bitmap = bitmap_zalloc(max_key, GFP_KERNEL);
+	if (!optee->notif.bitmap)
+		return -ENOMEM;
+
+	optee->notif.max_key = max_key;
+
+	return 0;
+}
+
+void optee_notif_uninit(struct optee *optee)
+{
+	kfree(optee->notif.bitmap);
+}

drivers/tee/optee/optee_msg.h

@@ -318,6 +318,13 @@ struct optee_msg_arg {
  * [in] param[0].u.rmem.shm_ref		holds shared memory reference
  * [in] param[0].u.rmem.offs		0
  * [in] param[0].u.rmem.size		0
+ *
+ * OPTEE_MSG_CMD_DO_BOTTOM_HALF does the scheduled bottom half processing
+ * of a driver.
+ *
+ * OPTEE_MSG_CMD_STOP_ASYNC_NOTIF informs secure world that from now is
+ * normal world unable to process asynchronous notifications. Typically
+ * used when the driver is shut down.
  */
 #define OPTEE_MSG_CMD_OPEN_SESSION	0
 #define OPTEE_MSG_CMD_INVOKE_COMMAND	1
@@ -325,6 +332,8 @@ struct optee_msg_arg {
 #define OPTEE_MSG_CMD_CANCEL		3
 #define OPTEE_MSG_CMD_REGISTER_SHM	4
 #define OPTEE_MSG_CMD_UNREGISTER_SHM	5
+#define OPTEE_MSG_CMD_DO_BOTTOM_HALF	6
+#define OPTEE_MSG_CMD_STOP_ASYNC_NOTIF	7
 #define OPTEE_MSG_FUNCID_CALL_WITH_ARG	0x0004
 
 #endif /* _OPTEE_MSG_H */

drivers/tee/optee/optee_private.h

@@ -28,6 +28,13 @@
 
 #define TEEC_ORIGIN_COMMS		0x00000002
 
+/*
+ * This value should be larger than the number threads in secure world to
+ * meet the need from secure world. The number of threads in secure world
+ * are usually not even close to 255 so we should be safe for now.
+ */
+#define OPTEE_DEFAULT_MAX_NOTIF_VALUE	255
+
 typedef void (optee_invoke_fn)(unsigned long, unsigned long, unsigned long,
 				unsigned long, unsigned long, unsigned long,
 				unsigned long, unsigned long,
@@ -44,10 +51,13 @@ struct optee_call_queue {
 	struct list_head waiters;
 };
 
-struct optee_wait_queue {
+struct optee_notif {
-	/* Serializes access to this struct */
+	u_int max_key;
-	struct mutex mu;
+	struct tee_context *ctx;
+	/* Serializes access to the elements below in this struct */
+	spinlock_t lock;
 	struct list_head db;
+	u_long *bitmap;
 };
 
 /**
@@ -79,6 +89,7 @@ struct optee_smc {
 	optee_invoke_fn *invoke_fn;
 	void *memremaped_shm;
 	u32 sec_caps;
+	unsigned int notif_irq;
 };
 
 /**
@@ -129,8 +140,7 @@ struct optee_ops {
  * @smc:		specific to SMC ABI
  * @ffa:		specific to FF-A ABI
  * @call_queue:		queue of threads waiting to call @invoke_fn
- * @wait_queue:		queue of threads from secure world waiting for a
+ * @notif:		notification synchronization struct
- *			secure world sync object
  * @supp:		supplicant synchronization struct for RPC to supplicant
  * @pool:		shared memory pool
  * @rpc_arg_count:	If > 0 number of RPC parameters to make room for
@@ -147,7 +157,7 @@ struct optee {
 		struct optee_ffa ffa;
 	};
 	struct optee_call_queue call_queue;
-	struct optee_wait_queue wait_queue;
+	struct optee_notif notif;
 	struct optee_supp supp;
 	struct tee_shm_pool *pool;
 	unsigned int rpc_arg_count;
@@ -185,8 +195,10 @@ struct optee_call_ctx {
 	size_t num_entries;
 };
 
-void optee_wait_queue_init(struct optee_wait_queue *wq);
+int optee_notif_init(struct optee *optee, u_int max_key);
-void optee_wait_queue_exit(struct optee_wait_queue *wq);
+void optee_notif_uninit(struct optee *optee);
+int optee_notif_wait(struct optee *optee, u_int key);
+int optee_notif_send(struct optee *optee, u_int key);
 
 u32 optee_supp_thrd_req(struct tee_context *ctx, u32 func, size_t num_params,
 			struct tee_param *param);

drivers/tee/optee/optee_rpc_cmd.h

@@ -28,24 +28,27 @@
 #define OPTEE_RPC_CMD_GET_TIME		3
 
 /*
- * Wait queue primitive, helper for secure world to implement a wait queue.
+ * Notification from/to secure world.
  *
- * If secure world needs to wait for a secure world mutex it issues a sleep
+ * If secure world needs to wait for something, for instance a mutex, it
- * request instead of spinning in secure world. Conversely is a wakeup
+ * does a notification wait request instead of spinning in secure world.
- * request issued when a secure world mutex with a thread waiting thread is
+ * Conversely can a synchronous notification can be sent when a secure
- * unlocked.
+ * world mutex with a thread waiting thread is unlocked.
  *
- * Waiting on a key
+ * This interface can also be used to wait for a asynchronous notification
- * [in]    value[0].a	    OPTEE_RPC_WAIT_QUEUE_SLEEP
+ * which instead is sent via a non-secure interrupt.
- * [in]    value[0].b	    Wait key
  *
- * Waking up a key
+ * Waiting on notification
- * [in]    value[0].a	    OPTEE_RPC_WAIT_QUEUE_WAKEUP
+ * [in]    value[0].a	    OPTEE_RPC_NOTIFICATION_WAIT
- * [in]    value[0].b	    Wakeup key
+ * [in]    value[0].b	    notification value
+ *
+ * Sending a synchronous notification
+ * [in]    value[0].a	    OPTEE_RPC_NOTIFICATION_SEND
+ * [in]    value[0].b	    notification value
  */
-#define OPTEE_RPC_CMD_WAIT_QUEUE	4
+#define OPTEE_RPC_CMD_NOTIFICATION	4
-#define OPTEE_RPC_WAIT_QUEUE_SLEEP	0
+#define OPTEE_RPC_NOTIFICATION_WAIT	0
-#define OPTEE_RPC_WAIT_QUEUE_WAKEUP	1
+#define OPTEE_RPC_NOTIFICATION_SEND	1
 
 /*
  * Suspend execution

drivers/tee/optee/optee_smc.h

@@ -107,6 +107,12 @@ struct optee_smc_call_get_os_revision_result {
 /*
  * Call with struct optee_msg_arg as argument
  *
+ * When calling this function normal world has a few responsibilities:
+ * 1. It must be able to handle eventual RPCs
+ * 2. Non-secure interrupts should not be masked
+ * 3. If asynchronous notifications has been negotiated successfully, then
+ *    asynchronous notifications should be unmasked during this call.
+ *
  * Call register usage:
  * a0	SMC Function ID, OPTEE_SMC*CALL_WITH_ARG
  * a1	Upper 32 bits of a 64-bit physical pointer to a struct optee_msg_arg
@@ -195,7 +201,8 @@ struct optee_smc_get_shm_config_result {
  * Normal return register usage:
  * a0	OPTEE_SMC_RETURN_OK
  * a1	bitfield of secure world capabilities OPTEE_SMC_SEC_CAP_*
- * a2-7	Preserved
+ * a2	The maximum secure world notification number
+ * a3-7	Preserved
  *
  * Error return register usage:
  * a0	OPTEE_SMC_RETURN_ENOTAVAIL, can't use the capabilities from normal world
@@ -218,6 +225,8 @@ struct optee_smc_get_shm_config_result {
 #define OPTEE_SMC_SEC_CAP_VIRTUALIZATION	BIT(3)
 /* Secure world supports Shared Memory with a NULL reference */
 #define OPTEE_SMC_SEC_CAP_MEMREF_NULL		BIT(4)
+/* Secure world supports asynchronous notification of normal world */
+#define OPTEE_SMC_SEC_CAP_ASYNC_NOTIF		BIT(5)
 
 #define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES	9
 #define OPTEE_SMC_EXCHANGE_CAPABILITIES \
@@ -226,8 +235,8 @@ struct optee_smc_get_shm_config_result {
 struct optee_smc_exchange_capabilities_result {
 	unsigned long status;
 	unsigned long capabilities;
+	unsigned long max_notif_value;
 	unsigned long reserved0;
-	unsigned long reserved1;
 };
 
 /*
@@ -319,6 +328,68 @@ struct optee_smc_disable_shm_cache_result {
 #define OPTEE_SMC_GET_THREAD_COUNT \
 	OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_THREAD_COUNT)
 
+/*
+ * Inform OP-TEE that normal world is able to receive asynchronous
+ * notifications.
+ *
+ * Call requests usage:
+ * a0	SMC Function ID, OPTEE_SMC_ENABLE_ASYNC_NOTIF
+ * a1-6	Not used
+ * a7	Hypervisor Client ID register
+ *
+ * Normal return register usage:
+ * a0	OPTEE_SMC_RETURN_OK
+ * a1-7	Preserved
+ *
+ * Not supported return register usage:
+ * a0	OPTEE_SMC_RETURN_ENOTAVAIL
+ * a1-7	Preserved
+ */
+#define OPTEE_SMC_FUNCID_ENABLE_ASYNC_NOTIF	16
+#define OPTEE_SMC_ENABLE_ASYNC_NOTIF \
+	OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_ENABLE_ASYNC_NOTIF)
+
+/*
+ * Retrieve a value of notifications pending since the last call of this
+ * function.
+ *
+ * OP-TEE keeps a record of all posted values. When an interrupt is
+ * received which indicates that there are posted values this function
+ * should be called until all pended values have been retrieved. When a
+ * value is retrieved, it's cleared from the record in secure world.
+ *
+ * Call requests usage:
+ * a0	SMC Function ID, OPTEE_SMC_GET_ASYNC_NOTIF_VALUE
+ * a1-6	Not used
+ * a7	Hypervisor Client ID register
+ *
+ * Normal return register usage:
+ * a0	OPTEE_SMC_RETURN_OK
+ * a1	value
+ * a2	Bit[0]: OPTEE_SMC_ASYNC_NOTIF_VALUE_VALID if the value in a1 is
+ *		valid, else 0 if no values where pending
+ * a2	Bit[1]: OPTEE_SMC_ASYNC_NOTIF_VALUE_PENDING if another value is
+ *		pending, else 0.
+ *	Bit[31:2]: MBZ
+ * a3-7	Preserved
+ *
+ * Not supported return register usage:
+ * a0	OPTEE_SMC_RETURN_ENOTAVAIL
+ * a1-7	Preserved
+ */
+#define OPTEE_SMC_ASYNC_NOTIF_VALUE_VALID	BIT(0)
+#define OPTEE_SMC_ASYNC_NOTIF_VALUE_PENDING	BIT(1)
+
+/*
+ * Notification that OP-TEE expects a yielding call to do some bottom half
+ * work in a driver.
+ */
+#define OPTEE_SMC_ASYNC_NOTIF_VALUE_DO_BOTTOM_HALF	0
+
+#define OPTEE_SMC_FUNCID_GET_ASYNC_NOTIF_VALUE	17
+#define OPTEE_SMC_GET_ASYNC_NOTIF_VALUE \
+	OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_ASYNC_NOTIF_VALUE)
+
 /*
  * Resume from RPC (for example after processing a foreign interrupt)
  *

drivers/tee/optee/rpc.c

@@ -12,23 +12,6 @@
 #include "optee_private.h"
 #include "optee_rpc_cmd.h"
 
-struct wq_entry {
-	struct list_head link;
-	struct completion c;
-	u32 key;
-};
-
-void optee_wait_queue_init(struct optee_wait_queue *priv)
-{
-	mutex_init(&priv->mu);
-	INIT_LIST_HEAD(&priv->db);
-}
-
-void optee_wait_queue_exit(struct optee_wait_queue *priv)
-{
-	mutex_destroy(&priv->mu);
-}
-
 static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg)
 {
 	struct timespec64 ts;
@@ -144,48 +127,6 @@ static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
 }
 #endif
 
-static struct wq_entry *wq_entry_get(struct optee_wait_queue *wq, u32 key)
-{
-	struct wq_entry *w;
-
-	mutex_lock(&wq->mu);
-
-	list_for_each_entry(w, &wq->db, link)
-		if (w->key == key)
-			goto out;
-
-	w = kmalloc(sizeof(*w), GFP_KERNEL);
-	if (w) {
-		init_completion(&w->c);
-		w->key = key;
-		list_add_tail(&w->link, &wq->db);
-	}
-out:
-	mutex_unlock(&wq->mu);
-	return w;
-}
-
-static void wq_sleep(struct optee_wait_queue *wq, u32 key)
-{
-	struct wq_entry *w = wq_entry_get(wq, key);
-
-	if (w) {
-		wait_for_completion(&w->c);
-		mutex_lock(&wq->mu);
-		list_del(&w->link);
-		mutex_unlock(&wq->mu);
-		kfree(w);
-	}
-}
-
-static void wq_wakeup(struct optee_wait_queue *wq, u32 key)
-{
-	struct wq_entry *w = wq_entry_get(wq, key);
-
-	if (w)
-		complete(&w->c);
-}
-
 static void handle_rpc_func_cmd_wq(struct optee *optee,
 				   struct optee_msg_arg *arg)
 {
@@ -197,11 +138,13 @@ static void handle_rpc_func_cmd_wq(struct optee *optee,
 		goto bad;
 
 	switch (arg->params[0].u.value.a) {
-	case OPTEE_RPC_WAIT_QUEUE_SLEEP:
+	case OPTEE_RPC_NOTIFICATION_WAIT:
-		wq_sleep(&optee->wait_queue, arg->params[0].u.value.b);
+		if (optee_notif_wait(optee, arg->params[0].u.value.b))
+			goto bad;
 		break;
-	case OPTEE_RPC_WAIT_QUEUE_WAKEUP:
+	case OPTEE_RPC_NOTIFICATION_SEND:
-		wq_wakeup(&optee->wait_queue, arg->params[0].u.value.b);
+		if (optee_notif_send(optee, arg->params[0].u.value.b))
+			goto bad;
 		break;
 	default:
 		goto bad;
@@ -319,7 +262,7 @@ void optee_rpc_cmd(struct tee_context *ctx, struct optee *optee,
 	case OPTEE_RPC_CMD_GET_TIME:
 		handle_rpc_func_cmd_get_time(arg);
 		break;
-	case OPTEE_RPC_CMD_WAIT_QUEUE:
+	case OPTEE_RPC_CMD_NOTIFICATION:
 		handle_rpc_func_cmd_wq(optee, arg);
 		break;
 	case OPTEE_RPC_CMD_SUSPEND:

drivers/tee/optee/smc_abi.c

@@ -8,13 +8,16 @@
 
 #include <linux/arm-smccc.h>
 #include <linux/errno.h>
+#include <linux/interrupt.h>
 #include <linux/io.h>
-#include <linux/sched.h>
+#include <linux/irqdomain.h>
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/tee_drv.h>
@@ -35,7 +38,8 @@
  * 2. Low level support functions to register shared memory in secure world
  * 3. Dynamic shared memory pool based on alloc_pages()
  * 4. Do a normal scheduled call into secure world
- * 5. Driver initialization.
+ * 5. Asynchronous notification
+ * 6. Driver initialization.
  */
 
 #define OPTEE_SHM_NUM_PRIV_PAGES	CONFIG_OPTEE_SHM_NUM_PRIV_PAGES
@@ -877,10 +881,137 @@ static int optee_smc_do_call_with_arg(struct tee_context *ctx,
 	return rc;
 }
 
+static int simple_call_with_arg(struct tee_context *ctx, u32 cmd)
+{
+	struct optee_msg_arg *msg_arg;
+	struct tee_shm *shm;
+
+	shm = optee_get_msg_arg(ctx, 0, &msg_arg);
+	if (IS_ERR(shm))
+		return PTR_ERR(shm);
+
+	msg_arg->cmd = cmd;
+	optee_smc_do_call_with_arg(ctx, shm);
+
+	tee_shm_free(shm);
+	return 0;
+}
+
+static int optee_smc_do_bottom_half(struct tee_context *ctx)
+{
+	return simple_call_with_arg(ctx, OPTEE_MSG_CMD_DO_BOTTOM_HALF);
+}
+
+static int optee_smc_stop_async_notif(struct tee_context *ctx)
+{
+	return simple_call_with_arg(ctx, OPTEE_MSG_CMD_STOP_ASYNC_NOTIF);
+}
+
 /*
- * 5. Driver initialization
+ * 5. Asynchronous notification
+ */
+
+static u32 get_async_notif_value(optee_invoke_fn *invoke_fn, bool *value_valid,
+				 bool *value_pending)
+{
+	struct arm_smccc_res res;
+
+	invoke_fn(OPTEE_SMC_GET_ASYNC_NOTIF_VALUE, 0, 0, 0, 0, 0, 0, 0, &res);
+
+	if (res.a0)
+		return 0;
+	*value_valid = (res.a2 & OPTEE_SMC_ASYNC_NOTIF_VALUE_VALID);
+	*value_pending = (res.a2 & OPTEE_SMC_ASYNC_NOTIF_VALUE_PENDING);
+	return res.a1;
+}
+
+static irqreturn_t notif_irq_handler(int irq, void *dev_id)
+{
+	struct optee *optee = dev_id;
+	bool do_bottom_half = false;
+	bool value_valid;
+	bool value_pending;
+	u32 value;
+
+	do {
+		value = get_async_notif_value(optee->smc.invoke_fn,
+					      &value_valid, &value_pending);
+		if (!value_valid)
+			break;
+
+		if (value == OPTEE_SMC_ASYNC_NOTIF_VALUE_DO_BOTTOM_HALF)
+			do_bottom_half = true;
+		else
+			optee_notif_send(optee, value);
+	} while (value_pending);
+
+	if (do_bottom_half)
+		return IRQ_WAKE_THREAD;
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t notif_irq_thread_fn(int irq, void *dev_id)
+{
+	struct optee *optee = dev_id;
+
+	optee_smc_do_bottom_half(optee->notif.ctx);
+
+	return IRQ_HANDLED;
+}
+
+static int optee_smc_notif_init_irq(struct optee *optee, u_int irq)
+{
+	struct tee_context *ctx;
+	int rc;
+
+	ctx = teedev_open(optee->teedev);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
+
+	optee->notif.ctx = ctx;
+	rc = request_threaded_irq(irq, notif_irq_handler,
+				  notif_irq_thread_fn,
+				  0, "optee_notification", optee);
+	if (rc)
+		goto err_close_ctx;
+
+	optee->smc.notif_irq = irq;
+
+	return 0;
+
+err_close_ctx:
+	teedev_close_context(optee->notif.ctx);
+	optee->notif.ctx = NULL;
+
+	return rc;
+}
+
+static void optee_smc_notif_uninit_irq(struct optee *optee)
+{
+	if (optee->notif.ctx) {
+		optee_smc_stop_async_notif(optee->notif.ctx);
+		if (optee->smc.notif_irq) {
+			free_irq(optee->smc.notif_irq, optee);
+			irq_dispose_mapping(optee->smc.notif_irq);
+		}
+
+		/*
+		 * The thread normally working with optee->notif.ctx was
+		 * stopped with free_irq() above.
 		 *
- * During driver inititialization is secure world probed to find out which
+		 * Note we're not using teedev_close_context() or
+		 * tee_client_close_context() since we have already called
+		 * tee_device_put() while initializing to avoid a circular
+		 * reference counting.
+		 */
+		teedev_close_context(optee->notif.ctx);
+	}
+}
+
+/*
+ * 6. Driver initialization
+ *
+ * During driver initialization is secure world probed to find out which
  * features it supports so the driver can be initialized with a matching
  * configuration. This involves for instance support for dynamic shared
  * memory instead of a static memory carvout.
@@ -952,6 +1083,17 @@ static const struct optee_ops optee_ops = {
 	.from_msg_param = optee_from_msg_param,
 };
 
+static int enable_async_notif(optee_invoke_fn *invoke_fn)
+{
+	struct arm_smccc_res res;
+
+	invoke_fn(OPTEE_SMC_ENABLE_ASYNC_NOTIF, 0, 0, 0, 0, 0, 0, 0, &res);
+
+	if (res.a0)
+		return -EINVAL;
+	return 0;
+}
+
 static bool optee_msg_api_uid_is_optee_api(optee_invoke_fn *invoke_fn)
 {
 	struct arm_smccc_res res;
@@ -1001,7 +1143,7 @@ static bool optee_msg_api_revision_is_compatible(optee_invoke_fn *invoke_fn)
 }
 
 static bool optee_msg_exchange_capabilities(optee_invoke_fn *invoke_fn,
-					    u32 *sec_caps)
+					    u32 *sec_caps, u32 *max_notif_value)
 {
 	union {
 		struct arm_smccc_res smccc;
@@ -1024,6 +1166,11 @@ static bool optee_msg_exchange_capabilities(optee_invoke_fn *invoke_fn,
 		return false;
 
 	*sec_caps = res.result.capabilities;
+	if (*sec_caps & OPTEE_SMC_SEC_CAP_ASYNC_NOTIF)
+		*max_notif_value = res.result.max_notif_value;
+	else
+		*max_notif_value = OPTEE_DEFAULT_MAX_NOTIF_VALUE;
+
 	return true;
 }
 
@@ -1188,6 +1335,8 @@ static int optee_smc_remove(struct platform_device *pdev)
 	 */
 	optee_disable_shm_cache(optee);
 
+	optee_smc_notif_uninit_irq(optee);
+
 	optee_remove_common(optee);
 
 	if (optee->smc.memremaped_shm)
@@ -1217,6 +1366,7 @@ static int optee_probe(struct platform_device *pdev)
 	struct optee *optee = NULL;
 	void *memremaped_shm = NULL;
 	struct tee_device *teedev;
+	u32 max_notif_value;
 	u32 sec_caps;
 	int rc;
 
@@ -1236,7 +1386,8 @@ static int optee_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	if (!optee_msg_exchange_capabilities(invoke_fn, &sec_caps)) {
+	if (!optee_msg_exchange_capabilities(invoke_fn, &sec_caps,
+					     &max_notif_value)) {
 		pr_warn("capabilities mismatch\n");
 		return -EINVAL;
 	}
@@ -1259,7 +1410,7 @@ static int optee_probe(struct platform_device *pdev)
 	optee = kzalloc(sizeof(*optee), GFP_KERNEL);
 	if (!optee) {
 		rc = -ENOMEM;
-		goto err;
+		goto err_free_pool;
 	}
 
 	optee->ops = &optee_ops;
@@ -1269,32 +1420,55 @@ static int optee_probe(struct platform_device *pdev)
 	teedev = tee_device_alloc(&optee_clnt_desc, NULL, pool, optee);
 	if (IS_ERR(teedev)) {
 		rc = PTR_ERR(teedev);
-		goto err;
+		goto err_free_optee;
 	}
 	optee->teedev = teedev;
 
 	teedev = tee_device_alloc(&optee_supp_desc, NULL, pool, optee);
 	if (IS_ERR(teedev)) {
 		rc = PTR_ERR(teedev);
-		goto err;
+		goto err_unreg_teedev;
 	}
 	optee->supp_teedev = teedev;
 
 	rc = tee_device_register(optee->teedev);
 	if (rc)
-		goto err;
+		goto err_unreg_supp_teedev;
 
 	rc = tee_device_register(optee->supp_teedev);
 	if (rc)
-		goto err;
+		goto err_unreg_supp_teedev;
 
 	mutex_init(&optee->call_queue.mutex);
 	INIT_LIST_HEAD(&optee->call_queue.waiters);
-	optee_wait_queue_init(&optee->wait_queue);
 	optee_supp_init(&optee->supp);
 	optee->smc.memremaped_shm = memremaped_shm;
 	optee->pool = pool;
 
+	platform_set_drvdata(pdev, optee);
+	rc = optee_notif_init(optee, max_notif_value);
+	if (rc)
+		goto err_supp_uninit;
+
+	if (sec_caps & OPTEE_SMC_SEC_CAP_ASYNC_NOTIF) {
+		unsigned int irq;
+
+		rc = platform_get_irq(pdev, 0);
+		if (rc < 0) {
+			pr_err("platform_get_irq: ret %d\n", rc);
+			goto err_notif_uninit;
+		}
+		irq = rc;
+
+		rc = optee_smc_notif_init_irq(optee, irq);
+		if (rc) {
+			irq_dispose_mapping(irq);
+			goto err_notif_uninit;
+		}
+		enable_async_notif(optee->smc.invoke_fn);
+		pr_info("Asynchronous notifications enabled\n");
+	}
+
 	/*
 	 * Ensure that there are no pre-existing shm objects before enabling
 	 * the shm cache so that there's no chance of receiving an invalid
@@ -1309,28 +1483,29 @@ static int optee_probe(struct platform_device *pdev)
 	if (optee->smc.sec_caps & OPTEE_SMC_SEC_CAP_DYNAMIC_SHM)
 		pr_info("dynamic shared memory is enabled\n");
 
-	platform_set_drvdata(pdev, optee);
-
 	rc = optee_enumerate_devices(PTA_CMD_GET_DEVICES);
-	if (rc) {
+	if (rc)
-		optee_smc_remove(pdev);
+		goto err_disable_shm_cache;
-		return rc;
-	}
 
 	pr_info("initialized driver\n");
 	return 0;
-err:
+
-	if (optee) {
+err_disable_shm_cache:
-		/*
+	optee_disable_shm_cache(optee);
-		 * tee_device_unregister() is safe to call even if the
+	optee_smc_notif_uninit_irq(optee);
-		 * devices hasn't been registered with
+	optee_unregister_devices();
-		 * tee_device_register() yet.
+err_notif_uninit:
-		 */
+	optee_notif_uninit(optee);
+err_supp_uninit:
+	optee_supp_uninit(&optee->supp);
+	mutex_destroy(&optee->call_queue.mutex);
+err_unreg_supp_teedev:
 	tee_device_unregister(optee->supp_teedev);
+err_unreg_teedev:
 	tee_device_unregister(optee->teedev);
+err_free_optee:
 	kfree(optee);
-	}
+err_free_pool:
-	if (pool)
 	tee_shm_pool_free(pool);
 	if (memremaped_shm)
 		memunmap(memremaped_shm);

drivers/tee/tee_core.c

@@ -43,7 +43,7 @@ static DEFINE_SPINLOCK(driver_lock);
 static struct class *tee_class;
 static dev_t tee_devt;
 
-static struct tee_context *teedev_open(struct tee_device *teedev)
+struct tee_context *teedev_open(struct tee_device *teedev)
 {
 	int rc;
 	struct tee_context *ctx;
@@ -70,6 +70,7 @@ err:
 	return ERR_PTR(rc);
 
 }
+EXPORT_SYMBOL_GPL(teedev_open);
 
 void teedev_ctx_get(struct tee_context *ctx)
 {
@@ -96,11 +97,14 @@ void teedev_ctx_put(struct tee_context *ctx)
 	kref_put(&ctx->refcount, teedev_ctx_release);
 }
 
-static void teedev_close_context(struct tee_context *ctx)
+void teedev_close_context(struct tee_context *ctx)
 {
-	tee_device_put(ctx->teedev);
+	struct tee_device *teedev = ctx->teedev;
+
 	teedev_ctx_put(ctx);
+	tee_device_put(teedev);
 }
+EXPORT_SYMBOL_GPL(teedev_close_context);
 
 static int tee_open(struct inode *inode, struct file *filp)
 {

drivers/usb/chipidea/ci_hdrc_tegra.c

@@ -7,6 +7,7 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
 #include <linux/usb.h>
@@ -15,6 +16,8 @@
 #include <linux/usb/of.h>
 #include <linux/usb/phy.h>
 
+#include <soc/tegra/common.h>
+
 #include "../host/ehci.h"
 
 #include "ci.h"
@@ -278,6 +281,8 @@ static int tegra_usb_probe(struct platform_device *pdev)
 	if (!usb)
 		return -ENOMEM;
 
+	platform_set_drvdata(pdev, usb);
+
 	soc = of_device_get_match_data(&pdev->dev);
 	if (!soc) {
 		dev_err(&pdev->dev, "failed to match OF data\n");
@@ -296,11 +301,14 @@ static int tegra_usb_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	err = clk_prepare_enable(usb->clk);
+	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
-	if (err < 0) {
+	if (err)
-		dev_err(&pdev->dev, "failed to enable clock: %d\n", err);
+		return err;
+
+	pm_runtime_enable(&pdev->dev);
+	err = pm_runtime_resume_and_get(&pdev->dev);
+	if (err)
 		return err;
-	}
 
 	if (device_property_present(&pdev->dev, "nvidia,needs-double-reset"))
 		usb->needs_double_reset = true;
@@ -320,8 +328,6 @@ static int tegra_usb_probe(struct platform_device *pdev)
 	if (err)
 		goto fail_power_off;
 
-	platform_set_drvdata(pdev, usb);
-
 	/* setup and register ChipIdea HDRC device */
 	usb->soc = soc;
 	usb->data.name = "tegra-usb";
@@ -350,7 +356,9 @@ static int tegra_usb_probe(struct platform_device *pdev)
 phy_shutdown:
 	usb_phy_shutdown(usb->phy);
 fail_power_off:
-	clk_disable_unprepare(usb->clk);
+	pm_runtime_put_sync_suspend(&pdev->dev);
+	pm_runtime_force_suspend(&pdev->dev);
+
 	return err;
 }
 
@@ -360,15 +368,46 @@ static int tegra_usb_remove(struct platform_device *pdev)
 
 	ci_hdrc_remove_device(usb->dev);
 	usb_phy_shutdown(usb->phy);
+
+	pm_runtime_put_sync_suspend(&pdev->dev);
+	pm_runtime_force_suspend(&pdev->dev);
+
+	return 0;
+}
+
+static int __maybe_unused tegra_usb_runtime_resume(struct device *dev)
+{
+	struct tegra_usb *usb = dev_get_drvdata(dev);
+	int err;
+
+	err = clk_prepare_enable(usb->clk);
+	if (err < 0) {
+		dev_err(dev, "failed to enable clock: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused tegra_usb_runtime_suspend(struct device *dev)
+{
+	struct tegra_usb *usb = dev_get_drvdata(dev);
+
 	clk_disable_unprepare(usb->clk);
 
 	return 0;
 }
 
+static const struct dev_pm_ops tegra_usb_pm = {
+	SET_RUNTIME_PM_OPS(tegra_usb_runtime_suspend, tegra_usb_runtime_resume,
+			   NULL)
+};
+
 static struct platform_driver tegra_usb_driver = {
 	.driver = {
 		.name = "tegra-usb",
 		.of_match_table = tegra_usb_of_match,
+		.pm = &tegra_usb_pm,
 	},
 	.probe = tegra_usb_probe,
 	.remove = tegra_usb_remove,

include/dt-bindings/clock/r8a779f0-cpg-mssr.h

@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: (GPL-2.0 or MIT) */
+/*
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_CLOCK_R8A779F0_CPG_MSSR_H__
+#define __DT_BINDINGS_CLOCK_R8A779F0_CPG_MSSR_H__
+
+#include <dt-bindings/clock/renesas-cpg-mssr.h>
+
+/* r8a779f0 CPG Core Clocks */
+
+#define R8A779F0_CLK_ZX			0
+#define R8A779F0_CLK_ZS			1
+#define R8A779F0_CLK_ZT			2
+#define R8A779F0_CLK_ZTR		3
+#define R8A779F0_CLK_S0D2		4
+#define R8A779F0_CLK_S0D3		5
+#define R8A779F0_CLK_S0D4		6
+#define R8A779F0_CLK_S0D2_MM		7
+#define R8A779F0_CLK_S0D3_MM		8
+#define R8A779F0_CLK_S0D4_MM		9
+#define R8A779F0_CLK_S0D2_RT		10
+#define R8A779F0_CLK_S0D3_RT		11
+#define R8A779F0_CLK_S0D4_RT		12
+#define R8A779F0_CLK_S0D6_RT		13
+#define R8A779F0_CLK_S0D3_PER		14
+#define R8A779F0_CLK_S0D6_PER		15
+#define R8A779F0_CLK_S0D12_PER		16
+#define R8A779F0_CLK_S0D24_PER		17
+#define R8A779F0_CLK_S0D2_HSC		18
+#define R8A779F0_CLK_S0D3_HSC		19
+#define R8A779F0_CLK_S0D4_HSC		20
+#define R8A779F0_CLK_S0D6_HSC		21
+#define R8A779F0_CLK_S0D12_HSC		22
+#define R8A779F0_CLK_S0D2_CC		23
+#define R8A779F0_CLK_CL			24
+#define R8A779F0_CLK_CL16M		25
+#define R8A779F0_CLK_CL16M_MM		26
+#define R8A779F0_CLK_CL16M_RT		27
+#define R8A779F0_CLK_CL16M_PER		28
+#define R8A779F0_CLK_CL16M_HSC		29
+#define R8A779F0_CLK_Z0			30
+#define R8A779F0_CLK_Z1			31
+#define R8A779F0_CLK_ZB3		32
+#define R8A779F0_CLK_ZB3D2		33
+#define R8A779F0_CLK_ZB3D4		34
+#define R8A779F0_CLK_SD0H		35
+#define R8A779F0_CLK_SD0		36
+#define R8A779F0_CLK_RPC		37
+#define R8A779F0_CLK_RPCD2		38
+#define R8A779F0_CLK_MSO		39
+#define R8A779F0_CLK_SASYNCRT		40
+#define R8A779F0_CLK_SASYNCPERD1	41
+#define R8A779F0_CLK_SASYNCPERD2	42
+#define R8A779F0_CLK_SASYNCPERD4	43
+#define R8A779F0_CLK_DBGSOC_HSC		44
+#define R8A779F0_CLK_RSW2		45
+#define R8A779F0_CLK_OSC		46
+#define R8A779F0_CLK_ZR			47
+#define R8A779F0_CLK_CPEX		48
+#define R8A779F0_CLK_CBFUSA		49
+#define R8A779F0_CLK_R			50
+
+#endif /* __DT_BINDINGS_CLOCK_R8A779F0_CPG_MSSR_H__ */

include/dt-bindings/power/imx8mn-power.h

@@ -12,4 +12,9 @@
 #define IMX8MN_POWER_DOMAIN_DISPMIX	3
 #define IMX8MN_POWER_DOMAIN_MIPI	4
 
+#define IMX8MN_DISPBLK_PD_MIPI_DSI	0
+#define IMX8MN_DISPBLK_PD_MIPI_CSI	1
+#define IMX8MN_DISPBLK_PD_LCDIF	2
+#define IMX8MN_DISPBLK_PD_ISI	3
+
 #endif

include/dt-bindings/power/qcom-rpmpd.h

@@ -68,6 +68,21 @@
 #define SM8350_MXC_AO	11
 #define SM8350_MSS	12
 
+/* SM8450 Power Domain Indexes */
+#define SM8450_CX	0
+#define SM8450_CX_AO	1
+#define SM8450_EBI	2
+#define SM8450_GFX	3
+#define SM8450_LCX	4
+#define SM8450_LMX	5
+#define SM8450_MMCX	6
+#define SM8450_MMCX_AO	7
+#define SM8450_MX	8
+#define SM8450_MX_AO	9
+#define SM8450_MXC	10
+#define SM8450_MXC_AO	11
+#define SM8450_MSS	12
+
 /* SC7180 Power Domain Indexes */
 #define SC7180_CX	0
 #define SC7180_CX_AO	1
@@ -219,6 +234,24 @@
 #define SM6115_VDD_LPI_CX	6
 #define SM6115_VDD_LPI_MX	7
 
+/* SM6125 Power Domains */
+#define SM6125_VDDCX		0
+#define SM6125_VDDCX_AO		1
+#define SM6125_VDDCX_VFL	2
+#define SM6125_VDDMX		3
+#define SM6125_VDDMX_AO		4
+#define SM6125_VDDMX_VFL	5
+
+/* QCM2290 Power Domains */
+#define QCM2290_VDDCX		0
+#define QCM2290_VDDCX_AO	1
+#define QCM2290_VDDCX_VFL	2
+#define QCM2290_VDDMX		3
+#define QCM2290_VDDMX_AO	4
+#define QCM2290_VDDMX_VFL	5
+#define QCM2290_VDD_LPI_CX	6
+#define QCM2290_VDD_LPI_MX	7
+
 /* RPM SMD Power Domain performance levels */
 #define RPM_SMD_LEVEL_RETENTION       16
 #define RPM_SMD_LEVEL_RETENTION_PLUS  32

include/dt-bindings/power/r8a779f0-sysc.h

@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: (GPL-2.0 or MIT) */
+/*
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_POWER_R8A779F0_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A779F0_SYSC_H__
+
+/*
+ * These power domain indices match the Power Domain Register Numbers (PDR)
+ */
+
+#define R8A779F0_PD_A1E0D0C0		0
+#define R8A779F0_PD_A1E0D0C1		1
+#define R8A779F0_PD_A1E0D1C0		2
+#define R8A779F0_PD_A1E0D1C1		3
+#define R8A779F0_PD_A1E1D0C0		4
+#define R8A779F0_PD_A1E1D0C1		5
+#define R8A779F0_PD_A1E1D1C0		6
+#define R8A779F0_PD_A1E1D1C1		7
+#define R8A779F0_PD_A2E0D0		16
+#define R8A779F0_PD_A2E0D1		17
+#define R8A779F0_PD_A2E1D0		18
+#define R8A779F0_PD_A2E1D1		19
+#define R8A779F0_PD_A3E0		20
+#define R8A779F0_PD_A3E1		21
+
+/* Always-on power area */
+#define R8A779F0_PD_ALWAYS_ON		64
+
+#endif /* __DT_BINDINGS_POWER_R8A779A0_SYSC_H__*/

include/dt-bindings/soc/samsung,exynos-usi.h

@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2021 Linaro Ltd.
+ * Author: Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * Device Tree bindings for Samsung Exynos USI (Universal Serial Interface).
+ */
+
+#ifndef __DT_BINDINGS_SAMSUNG_EXYNOS_USI_H
+#define __DT_BINDINGS_SAMSUNG_EXYNOS_USI_H
+
+#define USI_V2_NONE		0
+#define USI_V2_UART		1
+#define USI_V2_SPI		2
+#define USI_V2_I2C		3
+
+#endif /* __DT_BINDINGS_SAMSUNG_EXYNOS_USI_H */

include/linux/soc/qcom/llcc-qcom.h

@@ -33,6 +33,9 @@
 #define LLCC_MODPE       29
 #define LLCC_APTCM       30
 #define LLCC_WRCACHE     31
+#define LLCC_CVPFW       32
+#define LLCC_CPUSS1      33
+#define LLCC_CPUHWT      36
 
 /**
  * struct llcc_slice_desc - Cache slice descriptor

include/linux/soc/renesas/rcar-rst.h

@@ -4,8 +4,10 @@
 
 #ifdef CONFIG_RST_RCAR
 int rcar_rst_read_mode_pins(u32 *mode);
+int rcar_rst_set_rproc_boot_addr(u64 boot_addr);
 #else
 static inline int rcar_rst_read_mode_pins(u32 *mode) { return -ENODEV; }
+static inline int rcar_rst_set_rproc_boot_addr(u64 boot_addr) { return -ENODEV; }
 #endif
 
 #endif /* __LINUX_SOC_RENESAS_RCAR_RST_H__ */

include/linux/tee_drv.h

@@ -587,4 +587,18 @@ struct tee_client_driver {
 #define to_tee_client_driver(d) \
 		container_of(d, struct tee_client_driver, driver)
 
+/**
+ * teedev_open() - Open a struct tee_device
+ * @teedev:	Device to open
+ *
+ * @return a pointer to struct tee_context on success or an ERR_PTR on failure.
+ */
+struct tee_context *teedev_open(struct tee_device *teedev);
+
+/**
+ * teedev_close_context() - closes a struct tee_context
+ * @ctx:	The struct tee_context to close
+ */
+void teedev_close_context(struct tee_context *ctx);
+
 #endif /*__TEE_DRV_H*/

include/memory/renesas-rpc-if.h

@@ -57,6 +57,11 @@ struct rpcif_op {
 	} data;
 };
 
+enum rpcif_type {
+	RPCIF_RCAR_GEN3,
+	RPCIF_RZ_G2L,
+};
+
 struct rpcif {
 	struct device *dev;
 	void __iomem *base;
@@ -64,6 +69,7 @@ struct rpcif {
 	struct regmap *regmap;
 	struct reset_control *rstc;
 	size_t size;
+	enum rpcif_type type;
 	enum rpcif_data_dir dir;
 	u8 bus_size;
 	void *buffer;
@@ -78,7 +84,7 @@ struct rpcif {
 };
 
 int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
-void rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
+int rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
 void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs,
 		   size_t *len);
 int rpcif_manual_xfer(struct rpcif *rpc);

include/soc/tegra/common.h

@@ -39,4 +39,19 @@ devm_tegra_core_dev_init_opp_table(struct device *dev,
 }
 #endif
 
+static inline int
+devm_tegra_core_dev_init_opp_table_common(struct device *dev)
+{
+	struct tegra_core_opp_params opp_params = {};
+	int err;
+
+	opp_params.init_state = true;
+
+	err = devm_tegra_core_dev_init_opp_table(dev, &opp_params);
+	if (err != -ENODEV)
+		return err;
+
+	return 0;
+}
+
 #endif /* __SOC_TEGRA_COMMON_H__ */