ARM: dts: omap24xx: add minimal l4 bus layout with control module support

This patch creates an l4 / l4-wkup interconnects for omap2420 / omap2430
SoCs, 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 new SCM node as the clock provider.
Signed-off-by: NTero Kristo <t-kristo@ti.com>

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

+L4 interconnect bindings
+
+These bindings describe the OMAP SoCs L4 interconnect bus.
+
+Required properties:
+- compatible : Should be "ti,omap2-l4" for OMAP2 family l4 core bus
+	       Should be "ti,omap2-l4-wkup" for OMAP2 family l4 wkup bus
+- ranges : contains the IO map range for the bus
+
+Examples:
+
+l4: l4@48000000 {
+	compatible "ti,omap2-l4", "simple-bus";
+	#address-cells = <1>;
+	#size-cells = <1>;
+	ranges = <0 0x48000000 0x100000>;
+};

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

@@ -14,7 +14,7 @@ Required properties:
 		"ti,am4-prcm"
 		"ti,am4-scrm"
 		"ti,omap2-prcm"
-		"ti,omap2-scrm"
+		"ti,omap2-scm"
 		"ti,omap3-prm"
 		"ti,omap3-cm"
 		"ti,omap3-scrm"

arch/arm/boot/dts/omap2420.dtsi

@@ -14,47 +14,65 @@
 	compatible = "ti,omap2420", "ti,omap2";
 
 	ocp {
-		prcm: prcm@48008000 {
-			compatible = "ti,omap2-prcm";
-			reg = <0x48008000 0x1000>;
+		l4: l4@48000000 {
+			compatible = "ti,omap2-l4", "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0x48000000 0x100000>;
 
-			prcm_clocks: clocks {
-				#address-cells = <1>;
-				#size-cells = <0>;
-			};
+			prcm: prcm@8000 {
+				compatible = "ti,omap2-prcm";
+				reg = <0x8000 0x1000>;
 
-			prcm_clockdomains: clockdomains {
-			};
-		};
+				prcm_clocks: clocks {
+					#address-cells = <1>;
+					#size-cells = <0>;
+				};
 
-		scrm: scrm@48000000 {
-			compatible = "ti,omap2-scrm";
-			reg = <0x48000000 0x1000>;
+				prcm_clockdomains: clockdomains {
+				};
+			};
 
-			scrm_clocks: clocks {
+			scm: scm@0 {
+				compatible = "ti,omap2-scm", "simple-bus";
+				reg = <0x0 0x1000>;
 				#address-cells = <1>;
-				#size-cells = <0>;
+				#size-cells = <1>;
+				ranges = <0 0x0 0x1000>;
+
+				omap2420_pmx: pinmux@30 {
+					compatible = "ti,omap2420-padconf",
+						     "pinctrl-single";
+					reg = <0x30 0x0113>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+					pinctrl-single,register-width = <8>;
+					pinctrl-single,function-mask = <0x3f>;
+				};
+
+				scm_conf: scm_conf@270 {
+					compatible = "syscon";
+					reg = <0x270 0x100>;
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					scm_clocks: clocks {
+						#address-cells = <1>;
+						#size-cells = <0>;
+					};
+				};
+
+				scm_clockdomains: clockdomains {
+				};
 			};
 
-			scrm_clockdomains: clockdomains {
+			counter32k: counter@4000 {
+				compatible = "ti,omap-counter32k";
+				reg = <0x4000 0x20>;
+				ti,hwmods = "counter_32k";
 			};
 		};
 
-		counter32k: counter@48004000 {
-			compatible = "ti,omap-counter32k";
-			reg = <0x48004000 0x20>;
-			ti,hwmods = "counter_32k";
-		};
-
-		omap2420_pmx: pinmux@48000030 {
-			compatible = "ti,omap2420-padconf", "pinctrl-single";
-			reg = <0x48000030 0x0113>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			pinctrl-single,register-width = <8>;
-			pinctrl-single,function-mask = <0x3f>;
-		};
-
 		gpio1: gpio@48018000 {
 			compatible = "ti,omap2-gpio";
 			reg = <0x48018000 0x200>;

arch/arm/boot/dts/omap2430-clocks.dtsi

@@ -8,12 +8,12 @@
  * published by the Free Software Foundation.
  */
 
-&scrm_clocks {
+&scm_clocks {
 	mcbsp3_mux_fck: mcbsp3_mux_fck {
 		#clock-cells = <0>;
 		compatible = "ti,composite-mux-clock";
 		clocks = <&func_96m_ck>, <&mcbsp_clks>;
-		reg = <0x02e8>;
+		reg = <0x78>;
 	};
 
 	mcbsp3_fck: mcbsp3_fck {
@@ -27,7 +27,7 @@
 		compatible = "ti,composite-mux-clock";
 		clocks = <&func_96m_ck>, <&mcbsp_clks>;
 		ti,bit-shift = <2>;
-		reg = <0x02e8>;
+		reg = <0x78>;
 	};
 
 	mcbsp4_fck: mcbsp4_fck {
@@ -41,7 +41,7 @@
 		compatible = "ti,composite-mux-clock";
 		clocks = <&func_96m_ck>, <&mcbsp_clks>;
 		ti,bit-shift = <4>;
-		reg = <0x02e8>;
+		reg = <0x78>;
 	};
 
 	mcbsp5_fck: mcbsp5_fck {

arch/arm/boot/dts/omap2430.dtsi

@@ -14,60 +14,73 @@
 	compatible = "ti,omap2430", "ti,omap2";
 
 	ocp {
-		prcm: prcm@49006000 {
-			compatible = "ti,omap2-prcm";
-			reg = <0x49006000 0x1000>;
+		l4_wkup: l4_wkup@49000000 {
+			compatible = "ti,omap2-l4-wkup", "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0x49000000 0x31000>;
 
-			prcm_clocks: clocks {
-				#address-cells = <1>;
-				#size-cells = <0>;
-			};
+			prcm: prcm@6000 {
+				compatible = "ti,omap2-prcm";
+				reg = <0x6000 0x1000>;
 
-			prcm_clockdomains: clockdomains {
-			};
-		};
-
-		scrm: scrm@49002000 {
-			compatible = "ti,omap2-scrm";
-			reg = <0x49002000 0x1000>;
+				prcm_clocks: clocks {
+					#address-cells = <1>;
+					#size-cells = <0>;
+				};
 
-			scrm_clocks: clocks {
-				#address-cells = <1>;
-				#size-cells = <0>;
+				prcm_clockdomains: clockdomains {
+				};
 			};
 
-			scrm_clockdomains: clockdomains {
+			scm: scm@2000 {
+				compatible = "ti,omap2-scm", "simple-bus";
+				reg = <0x2000 0x1000>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x2000 0x1000>;
+
+				omap2430_pmx: pinmux@30 {
+					compatible = "ti,omap2430-padconf",
+						     "pinctrl-single";
+					reg = <0x30 0x0154>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+					pinctrl-single,register-width = <8>;
+					pinctrl-single,function-mask = <0x3f>;
+				};
+
+				scm_conf: scm_conf@270 {
+					compatible = "syscon";
+					reg = <0x270 0x240>;
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					scm_clocks: clocks {
+						#address-cells = <1>;
+						#size-cells = <0>;
+					};
+
+					pbias_regulator: pbias_regulator {
+						compatible = "ti,pbias-omap";
+						reg = <0x230 0x4>;
+						syscon = <&scm_conf>;
+						pbias_mmc_reg: pbias_mmc_omap2430 {
+							regulator-name = "pbias_mmc_omap2430";
+							regulator-min-microvolt = <1800000>;
+							regulator-max-microvolt = <3000000>;
+						};
+					};
+				};
+
+				scm_clockdomains: clockdomains {
+				};
 			};
-		};
-
-		counter32k: counter@49020000 {
-			compatible = "ti,omap-counter32k";
-			reg = <0x49020000 0x20>;
-			ti,hwmods = "counter_32k";
-		};
-
-		omap2430_pmx: pinmux@49002030 {
-			compatible = "ti,omap2430-padconf", "pinctrl-single";
-			reg = <0x49002030 0x0154>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			pinctrl-single,register-width = <8>;
-			pinctrl-single,function-mask = <0x3f>;
-		};
-
-		omap2_scm_general: tisyscon@49002270 {
-			compatible = "syscon";
-			reg = <0x49002270 0x240>;
-		};
 
-		pbias_regulator: pbias_regulator {
-			compatible = "ti,pbias-omap";
-			reg = <0x230 0x4>;
-			syscon = <&omap2_scm_general>;
-			pbias_mmc_reg: pbias_mmc_omap2430 {
-				regulator-name = "pbias_mmc_omap2430";
-				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <3000000>;
+			counter32k: counter@20000 {
+				compatible = "ti,omap-counter32k";
+				reg = <0x20000 0x20>;
+				ti,hwmods = "counter_32k";
 			};
 		};
 

arch/arm/boot/dts/omap24xx-clocks.dtsi

@@ -7,13 +7,13 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-&scrm_clocks {
+&scm_clocks {
 	mcbsp1_mux_fck: mcbsp1_mux_fck {
 		#clock-cells = <0>;
 		compatible = "ti,composite-mux-clock";
 		clocks = <&func_96m_ck>, <&mcbsp_clks>;
 		ti,bit-shift = <2>;
-		reg = <0x0274>;
+		reg = <0x4>;
 	};
 
 	mcbsp1_fck: mcbsp1_fck {
@@ -27,7 +27,7 @@
 		compatible = "ti,composite-mux-clock";
 		clocks = <&func_96m_ck>, <&mcbsp_clks>;
 		ti,bit-shift = <6>;
-		reg = <0x0274>;
+		reg = <0x4>;
 	};
 
 	mcbsp2_fck: mcbsp2_fck {

arch/arm/mach-omap2/control.c

@@ -661,10 +661,15 @@ static struct control_init_data ctrl_data = {
 	.index = TI_CLKM_CTRL,
 };
 
+static const struct control_init_data omap2_ctrl_data = {
+	.index = TI_CLKM_CTRL,
+	.offset = -OMAP2_CONTROL_GENERAL,
+};
+
 static const struct of_device_id omap_scrm_dt_match_table[] = {
 	{ .compatible = "ti,am3-scrm", .data = &ctrl_data },
 	{ .compatible = "ti,am4-scrm", .data = &ctrl_data },
-	{ .compatible = "ti,omap2-scrm", .data = &ctrl_data },
+	{ .compatible = "ti,omap2-scm", .data = &omap2_ctrl_data },
 	{ .compatible = "ti,omap3-scrm", .data = &ctrl_data },
 	{ .compatible = "ti,dm816-scrm", .data = &ctrl_data },
 	{ }