diff --git a/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
index b4f9567cb9f8..2aefa53cb16b 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
@@ -68,6 +68,7 @@ &rcar_sound {
 	ports {
 		/* rsnd_port0 is on salvator-common */
 		rsnd_port1: port@1 {
+			reg = <1>;
 			rsnd_endpoint1: endpoint {
 				remote-endpoint = <&dw_hdmi0_snd_in>;
 
diff --git a/arch/arm64/boot/dts/renesas/r8a7796-salvator-xs.dts b/arch/arm64/boot/dts/renesas/r8a7796-salvator-xs.dts
index 31f12059355e..d58ede18108d 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-salvator-xs.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-salvator-xs.dts
@@ -68,6 +68,7 @@ &rcar_sound {
 	ports {
 		/* rsnd_port0 is on salvator-common */
 		rsnd_port1: port@1 {
+			reg = <1>;
 			rsnd_endpoint1: endpoint {
 				remote-endpoint = <&dw_hdmi0_snd_in>;
 
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index cdf784899cf8..111f462cd708 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -2162,17 +2162,6 @@ ssi9: ssi-9 {
 					dma-names = "rx", "tx";
 				};
 			};
-
-			ports {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				port@0 {
-					reg = <0>;
-				};
-				port@1 {
-					reg = <1>;
-				};
-			};
 		};
 
 		audma0: dma-controller@ec700000 {