diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index be8631dff1b4..a37749caf40e 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -1269,6 +1269,9 @@
 				port@0 {
 					reg = <0>;
 				};
+				port@1 {
+					reg = <1>;
+				};
 			};
 		};