ARM: dts: am4372: add minimal l4 bus layout with control module support

This patch creates an l4_wkup interconnect for AM43xx, and moves some of
the generic peripherals under it. System control module nodes are moved
under this new interconnect also, and the SCM clock layout is changed
to use the renamed SCM nodea as the clock provider.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

Documentation/devicetree/bindings/arm/omap/l4.txt

@@ -7,6 +7,7 @@ Required properties:
 	       Should be "ti,omap2-l4-wkup" for OMAP2 family l4 wkup bus
 	       Should be "ti,omap3-l4-core" for OMAP3 family l4 core bus
 	       Should be "ti,am3-l4-wkup" for AM33xx family l4 wkup bus
+	       Should be "ti,am4-l4-wkup" for AM43xx family l4 wkup bus
 - ranges : contains the IO map range for the bus
 
 Examples:

Documentation/devicetree/bindings/arm/omap/prcm.txt

@@ -12,7 +12,7 @@ Required properties:
 		"ti,am3-prcm"
 		"ti,am3-scm"
 		"ti,am4-prcm"
-		"ti,am4-scrm"
+		"ti,am4-scm"
 		"ti,omap2-prcm"
 		"ti,omap2-scm"
 		"ti,omap3-prm"

arch/arm/boot/dts/am4372.dtsi

@@ -57,22 +57,6 @@
 		cache-level = <2>;
 	};
 
-	am43xx_control_module: control_module@4a002000 {
-		compatible = "syscon";
-		reg = <0x44e10000 0x7f4>;
-	};
-
-	am43xx_pinmux: pinmux@44e10800 {
-		compatible = "ti,am437-padconf", "pinctrl-single";
-		reg = <0x44e10800 0x31c>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		#interrupt-cells = <1>;
-		interrupt-controller;
-		pinctrl-single,register-width = <32>;
-		pinctrl-single,function-mask = <0xffffffff>;
-	};
-
 	ocp {
 		compatible = "ti,am4372-l3-noc", "simple-bus";
 		#address-cells = <1>;
@@ -84,29 +68,58 @@
 		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
 
-		prcm: prcm@44df0000 {
-			compatible = "ti,am4-prcm";
-			reg = <0x44df0000 0x11000>;
+		l4_wkup: l4_wkup@44c00000 {
+			compatible = "ti,am4-l4-wkup", "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0x44c00000 0x287000>;
 
-			prcm_clocks: clocks {
+			prcm: prcm@1f0000 {
+				compatible = "ti,am4-prcm";
+				reg = <0x1f0000 0x11000>;
+
+				prcm_clocks: clocks {
+					#address-cells = <1>;
+					#size-cells = <0>;
+				};
+
+				prcm_clockdomains: clockdomains {
+				};
+			};
+
+			scm: scm@210000 {
+				compatible = "ti,am4-scm", "simple-bus";
+				reg = <0x210000 0x4000>;
 				#address-cells = <1>;
-				#size-cells = <0>;
-			};
+				#size-cells = <1>;
+				ranges = <0 0x210000 0x4000>;
 
-			prcm_clockdomains: clockdomains {
-			};
-		};
+				am43xx_pinmux: pinmux@800 {
+					compatible = "ti,am437-padconf",
+						     "pinctrl-single";
+					reg = <0x800 0x31c>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+					#interrupt-cells = <1>;
+					interrupt-controller;
+					pinctrl-single,register-width = <32>;
+					pinctrl-single,function-mask = <0xffffffff>;
+				};
 
-		scrm: scrm@44e10000 {
-			compatible = "ti,am4-scrm";
-			reg = <0x44e10000 0x2000>;
+				scm_conf: scm_conf@0 {
+					compatible = "syscon";
+					reg = <0x0 0x800>;
+					#address-cells = <1>;
+					#size-cells = <1>;
 
-			scrm_clocks: clocks {
-				#address-cells = <1>;
-				#size-cells = <0>;
-			};
+					scm_clocks: clocks {
+						#address-cells = <1>;
+						#size-cells = <0>;
+					};
+				};
 
-			scrm_clockdomains: clockdomains {
+				scm_clockdomains: clockdomains {
+				};
 			};
 		};
 
@@ -933,7 +946,7 @@
 			clocks = <&dcan0_fck>;
 			clock-names = "fck";
 			reg = <0x481cc000 0x2000>;
-			syscon-raminit = <&am43xx_control_module 0x644 0>;
+			syscon-raminit = <&scm_conf 0x644 0>;
 			interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 		};
@@ -944,7 +957,7 @@
 			clocks = <&dcan1_fck>;
 			clock-names = "fck";
 			reg = <0x481d0000 0x2000>;
-			syscon-raminit = <&am43xx_control_module 0x644 1>;
+			syscon-raminit = <&scm_conf 0x644 1>;
 			interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 		};

arch/arm/boot/dts/am43xx-clocks.dtsi

@@ -7,7 +7,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-&scrm_clocks {
+&scm_clocks {
 	sys_clkin_ck: sys_clkin_ck {
 		#clock-cells = <0>;
 		compatible = "ti,mux-clock";

arch/arm/mach-omap2/control.c

@@ -668,7 +668,7 @@ static const struct control_init_data omap2_ctrl_data = {
 
 static const struct of_device_id omap_scrm_dt_match_table[] = {
 	{ .compatible = "ti,am3-scm", .data = &ctrl_data },
-	{ .compatible = "ti,am4-scrm", .data = &ctrl_data },
+	{ .compatible = "ti,am4-scm", .data = &ctrl_data },
 	{ .compatible = "ti,omap2-scm", .data = &omap2_ctrl_data },
 	{ .compatible = "ti,omap3-scm", .data = &omap2_ctrl_data },
 	{ .compatible = "ti,dm816-scrm", .data = &ctrl_data },