diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index f0672ec65b26..a2aa17e4dfdf 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -514,6 +514,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			port@0 {
+				reg = <0>;
 				adv7533_in: endpoint {
 					remote-endpoint = <&dsi_out0>;
 				};