arm/dts: dra7.dtsi: add DSS support

DRA7xxx contains a very similar DSS to OMAP5. The main differences are:

* no DSI or RFBI support.
* 1 or 2 dedicated video PLLs.
* need to do additional configuration to the DRA7 CONTROL module.

DRA72xx has only one video PLL, and DRA74xx has two.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: devicetree@vger.kernel.org
Acked-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra7.dtsi

@@ -1474,6 +1474,44 @@ dcan2: can@481d0000 {
 			clocks = <&sys_clkin1>;
 			status = "disabled";
 		};
+
+		dss: dss@58000000 {
+			compatible = "ti,dra7-dss";
+			/* 'reg' defined in dra72x.dtsi and dra74x.dtsi */
+			/* 'clocks' defined in dra72x.dtsi and dra74x.dtsi */
+			status = "disabled";
+			ti,hwmods = "dss_core";
+			/* CTRL_CORE_DSS_PLL_CONTROL */
+			syscon-pll-ctrl = <&scm_conf 0x538>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			dispc@58001000 {
+				compatible = "ti,dra7-dispc";
+				reg = <0x58001000 0x1000>;
+				interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+				ti,hwmods = "dss_dispc";
+				clocks = <&dss_dss_clk>;
+				clock-names = "fck";
+				/* CTRL_CORE_SMA_SW_1 */
+				syscon-pol = <&scm_conf 0x534>;
+			};
+
+			hdmi: encoder@58060000 {
+				compatible = "ti,dra7-hdmi";
+				reg = <0x58040000 0x200>,
+				      <0x58040200 0x80>,
+				      <0x58040300 0x80>,
+				      <0x58060000 0x19000>;
+				reg-names = "wp", "pll", "phy", "core";
+				interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+				status = "disabled";
+				ti,hwmods = "dss_hdmi";
+				clocks = <&dss_48mhz_clk>, <&dss_hdmi_clk>;
+				clock-names = "fck", "sys_clk";
+			};
+		};
 	};
 
 	thermal_zones: thermal-zones {

arch/arm/boot/dts/dra72x.dtsi

@@ -34,3 +34,14 @@ pmu {
 		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
 	};
 };
+
+&dss {
+	reg = <0x58000000 0x80>,
+	      <0x58004054 0x4>,
+	      <0x58004300 0x20>;
+	reg-names = "dss", "pll1_clkctrl", "pll1";
+
+	clocks = <&dss_dss_clk>,
+		 <&dss_video1_clk>;
+	clock-names = "fck", "video1_clk";
+};

arch/arm/boot/dts/dra74x.dtsi

@@ -73,3 +73,18 @@ usb4: usb@48950000 {
 		};
 	};
 };
+
+&dss {
+	reg = <0x58000000 0x80>,
+	      <0x58004054 0x4>,
+	      <0x58004300 0x20>,
+	      <0x58005054 0x4>,
+	      <0x58005300 0x20>;
+	reg-names = "dss", "pll1_clkctrl", "pll1",
+		    "pll2_clkctrl", "pll2";
+
+	clocks = <&dss_dss_clk>,
+		 <&dss_video1_clk>,
+		 <&dss_video2_clk>;
+	clock-names = "fck", "video1_clk", "video2_clk";
+};