ARM: dts: porter: add DU DT support

Define  the Porter board dependent part of the DU device node.
Add the device node  for Analog Devices ADV7511W  HDMI transmitter to I2C2
bus and the HDMI connector. Add the necessary subnodes to interconnect  DU
and HDMI devices.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791-porter.dts

@@ -78,6 +78,29 @@
 		states = <3300000 1
 			  1800000 0>;
 	};
+
+	hdmi-out {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&adv7511_out>;
+			};
+		};
+	};
+
+	x3_clk: x3-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <148500000>;
+	};
+
+	x16_clk: x16-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <74250000>;
+	};
 };
 
 &extal_clk {
@@ -139,6 +162,11 @@
 		renesas,groups = "can0_data";
 		renesas,function = "can0";
 	};
+
+	du_pins: du {
+		renesas,groups = "du_rgb888", "du_sync", "du_disp", "du_clk_out_0";
+		renesas,function = "du";
+	};
 };
 
 &scif0 {
@@ -241,6 +269,38 @@
 			};
 		};
 	};
+
+	hdmi@39 {
+		compatible = "adi,adv7511w";
+		reg = <0x39>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+
+		adi,input-depth = <8>;
+		adi,input-colorspace = "rgb";
+		adi,input-clock = "1x";
+		adi,input-style = <1>;
+		adi,input-justification = "evenly";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				adv7511_in: endpoint {
+					remote-endpoint = <&du_out_rgb>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				adv7511_out: endpoint {
+					remote-endpoint = <&hdmi_con>;
+				};
+			};
+		};
+	};
 };
 
 &sata0 {
@@ -304,3 +364,24 @@
 
 	status = "okay";
 };
+
+&du {
+	pinctrl-0 = <&du_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	clocks = <&mstp7_clks R8A7791_CLK_DU0>,
+		 <&mstp7_clks R8A7791_CLK_DU1>,
+		 <&mstp7_clks R8A7791_CLK_LVDS0>,
+		 <&x3_clk>, <&x16_clk>;
+	clock-names = "du.0", "du.1", "lvds.0",
+		      "dclkin.0", "dclkin.1";
+
+	ports {
+		port@1 {
+			endpoint {
+				remote-endpoint = <&adv7511_in>;
+			};
+		};
+	};
+};