arm64: dts: renesas: r8a774b1: Add DU device to DT

Add the DU device to r8a774b1 SoC DT.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/1570029619-43238-3-git-send-email-biju.das@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a774b1.dtsi

@@ -1285,7 +1285,18 @@ port@1 {
 		};
 
 		du: display@feb00000 {
+			compatible = "renesas,du-r8a774b1";
 			reg = <0 0xfeb00000 0 0x80000>;
+			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 724>,
+				 <&cpg CPG_MOD 723>,
+				 <&cpg CPG_MOD 721>;
+			clock-names = "du.0", "du.1", "du.3";
+			status = "disabled";
+
+			vsps = <&vspd0 0>, <&vspd1 0>, <&vspd0 1>;
 
 			ports {
 				#address-cells = <1>;
@@ -1304,6 +1315,33 @@ du_out_hdmi0: endpoint {
 				port@2 {
 					reg = <2>;
 					du_out_lvds0: endpoint {
+						remote-endpoint = <&lvds0_in>;
+					};
+				};
+			};
+		};
+
+		lvds0: lvds@feb90000 {
+			compatible = "renesas,r8a774b1-lvds";
+			reg = <0 0xfeb90000 0 0x14>;
+			clocks = <&cpg CPG_MOD 727>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 727>;
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					lvds0_in: endpoint {
+						remote-endpoint = <&du_out_lvds0>;
+					};
+				};
+				port@1 {
+					reg = <1>;
+					lvds0_out: endpoint {
 					};
 				};
 			};