diff --git a/arch/arm64/boot/dts/renesas/r8a774b1.dtsi b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
index 777b45d833f8..979be5a96ba3 100644
--- a/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
@@ -1267,7 +1267,16 @@
 		};
 
 		hdmi0: hdmi@fead0000 {
+			compatible = "renesas,r8a774b1-hdmi",
+				     "renesas,rcar-gen3-hdmi";
 			reg = <0 0xfead0000 0 0x10000>;
+			interrupts = <GIC_SPI 389 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 729>,
+				 <&cpg CPG_CORE R8A774B1_CLK_HDMI>;
+			clock-names = "iahb", "isfr";
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 729>;
+			status = "disabled";
 
 			ports {
 				#address-cells = <1>;
@@ -1276,11 +1285,16 @@
 				port@0 {
 					reg = <0>;
 					dw_hdmi0_in: endpoint {
+						remote-endpoint = <&du_out_hdmi0>;
 					};
 				};
 				port@1 {
 					reg = <1>;
 				};
+				port@2 {
+					/* HDMI sound */
+					reg = <2>;
+				};
 			};
 		};
 
@@ -1310,6 +1324,7 @@
 				port@1 {
 					reg = <1>;
 					du_out_hdmi0: endpoint {
+						remote-endpoint = <&dw_hdmi0_in>;
 					};
 				};
 				port@2 {