diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index f41bc25b3933..3fbd86590fb0 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -1594,6 +1594,17 @@
 					dma-names = "rx", "tx", "rxu", "txu";
 				};
 			};
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				port@0 {
+					reg = <0>;
+				};
+				port@1 {
+					reg = <1>;
+				};
+			};
 		};
 
 		audma0: dma-controller@ec700000 {