linux/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/ufs/qcom,ufs.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Universal Flash Storage (UFS) Controller

maintainers:
  - Bjorn Andersson <bjorn.andersson@linaro.org>
  - Andy Gross <agross@kernel.org>

# Select only our matches, not all jedec,ufs-2.0
select:
  properties:
    compatible:
      contains:
        const: qcom,ufshc
  required:
    - compatible

properties:
  compatible:
    items:
      - enum:
          - qcom,msm8994-ufshc
          - qcom,msm8996-ufshc
          - qcom,msm8998-ufshc
          - qcom,sc8280xp-ufshc
          - qcom,sdm845-ufshc
          - qcom,sm6350-ufshc
          - qcom,sm8150-ufshc
          - qcom,sm8250-ufshc
          - qcom,sm8350-ufshc
          - qcom,sm8450-ufshc
      - const: qcom,ufshc
      - const: jedec,ufs-2.0

  clocks:
    minItems: 8
    maxItems: 11

  clock-names:
    minItems: 8
    maxItems: 11

  interconnects:
    minItems: 2
    maxItems: 2

  interconnect-names:
    items:
      - const: ufs-ddr
      - const: cpu-ufs

  iommus:
    minItems: 1
    maxItems: 2

  phys:
    maxItems: 1

  phy-names:
    items:
      - const: ufsphy

  power-domains:
    maxItems: 1

  reg:
    minItems: 1
    maxItems: 2

  resets:
    maxItems: 1

  '#reset-cells':
    const: 1

  reset-names:
    items:
      - const: rst

  reset-gpios:
    maxItems: 1
    description:
      GPIO connected to the RESET pin of the UFS memory device.

required:
  - compatible
  - reg

allOf:
  - $ref: ufs-common.yaml

  - if:
      properties:
        compatible:
          contains:
            enum:
              - qcom,msm8998-ufshc
              - qcom,sc8280xp-ufshc
              - qcom,sm8250-ufshc
              - qcom,sm8350-ufshc
              - qcom,sm8450-ufshc
    then:
      properties:
        clocks:
          minItems: 8
          maxItems: 8
        clock-names:
          items:
            - const: core_clk
            - const: bus_aggr_clk
            - const: iface_clk
            - const: core_clk_unipro
            - const: ref_clk
            - const: tx_lane0_sync_clk
            - const: rx_lane0_sync_clk
            - const: rx_lane1_sync_clk
        reg:
          minItems: 1
          maxItems: 1

  - if:
      properties:
        compatible:
          contains:
            enum:
              - qcom,sdm845-ufshc
              - qcom,sm6350-ufshc
              - qcom,sm8150-ufshc
    then:
      properties:
        clocks:
          minItems: 9
          maxItems: 9
        clock-names:
          items:
            - const: core_clk
            - const: bus_aggr_clk
            - const: iface_clk
            - const: core_clk_unipro
            - const: ref_clk
            - const: tx_lane0_sync_clk
            - const: rx_lane0_sync_clk
            - const: rx_lane1_sync_clk
            - const: ice_core_clk
        reg:
          minItems: 2
          maxItems: 2

  - if:
      properties:
        compatible:
          contains:
            enum:
              - qcom,msm8996-ufshc
    then:
      properties:
        clocks:
          minItems: 11
          maxItems: 11
        clock-names:
          items:
            - const: core_clk_src
            - const: core_clk
            - const: bus_clk
            - const: bus_aggr_clk
            - const: iface_clk
            - const: core_clk_unipro_src
            - const: core_clk_unipro
            - const: core_clk_ice
            - const: ref_clk
            - const: tx_lane0_sync_clk
            - const: rx_lane0_sync_clk
        reg:
          minItems: 1
          maxItems: 1

    # TODO: define clock bindings for qcom,msm8994-ufshc

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/qcom,gcc-sm8450.h>
    #include <dt-bindings/clock/qcom,rpmh.h>
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interconnect/qcom,sm8450.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        ufs@1d84000 {
            compatible = "qcom,sm8450-ufshc", "qcom,ufshc",
                         "jedec,ufs-2.0";
            reg = <0 0x01d84000 0 0x3000>;
            interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
            phys = <&ufs_mem_phy_lanes>;
            phy-names = "ufsphy";
            lanes-per-direction = <2>;
            #reset-cells = <1>;
            resets = <&gcc GCC_UFS_PHY_BCR>;
            reset-names = "rst";
            reset-gpios = <&tlmm 210 GPIO_ACTIVE_LOW>;

            vcc-supply = <&vreg_l7b_2p5>;
            vcc-max-microamp = <1100000>;
            vccq-supply = <&vreg_l9b_1p2>;
            vccq-max-microamp = <1200000>;

            power-domains = <&gcc UFS_PHY_GDSC>;
            iommus = <&apps_smmu 0xe0 0x0>;
            interconnects = <&aggre1_noc MASTER_UFS_MEM &mc_virt SLAVE_EBI1>,
                            <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_UFS_MEM_CFG>;
            interconnect-names = "ufs-ddr", "cpu-ufs";

            clock-names = "core_clk",
                          "bus_aggr_clk",
                          "iface_clk",
                          "core_clk_unipro",
                          "ref_clk",
                          "tx_lane0_sync_clk",
                          "rx_lane0_sync_clk",
                          "rx_lane1_sync_clk";
            clocks = <&gcc GCC_UFS_PHY_AXI_CLK>,
                     <&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
                     <&gcc GCC_UFS_PHY_AHB_CLK>,
                     <&gcc GCC_UFS_PHY_UNIPRO_CORE_CLK>,
                     <&rpmhcc RPMH_CXO_CLK>,
                     <&gcc GCC_UFS_PHY_TX_SYMBOL_0_CLK>,
                     <&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
                     <&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>;
            freq-table-hz = <75000000 300000000>,
                            <0 0>,
                            <0 0>,
                            <75000000 300000000>,
                            <75000000 300000000>,
                            <0 0>,
                            <0 0>,
                            <0 0>;
        };
    };