diff --git a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
index bdf555f48268..746775f4ab99 100644
--- a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
@@ -1848,6 +1848,8 @@
 			resets = <&cpg 727>;
 			status = "disabled";
 
+			renesas,companion = <&lvds1>;
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;