diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index a3c27807f6c5..624bb2c30513 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -258,6 +258,17 @@
 			system-clock-frequency = <11289600>;
 		};
 	};
+
+	hdmi-out {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&adv7511_out>;
+			};
+		};
+	};
 };
 
 &du {
@@ -266,6 +277,11 @@
 	status = "okay";
 
 	ports {
+		port@0 {
+			endpoint {
+				remote-endpoint = <&adv7511_in>;
+			};
+		};
 		port@1 {
 			lvds_connector: endpoint {
 			};
@@ -284,7 +300,7 @@
 	};
 
 	du_pins: du {
-		renesas,groups = "du_rgb666", "du_sync", "du_clk_out_0";
+		renesas,groups = "du_rgb666", "du_sync", "du_disp", "du_clk_out_0";
 		renesas,function = "du";
 	};
 
@@ -506,6 +522,38 @@
 		};
 	};
 
+	hdmi@39 {
+		compatible = "adi,adv7511w";
+		reg = <0x39>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
+
+		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>;
+				};
+			};
+		};
+	};
+
 	eeprom@50 {
 		compatible = "renesas,24c02";
 		reg = <0x50>;