diff --git a/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts b/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
index 445f5dd7c983..6319a66fac95 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts
@@ -146,7 +146,6 @@ &i2c0 {
 
 	hdmi@39 {
 		compatible = "adi,adv7511w";
-		#sound-dai-cells = <0>;
 		reg = <0x39>;
 		interrupts-extended = <&gpio1 20 IRQ_TYPE_LEVEL_LOW>;
 		avdd-supply = <&vcc_d1_8v>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts b/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
index c2692d6fd00d..2da63b4daa0a 100644
--- a/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
@@ -138,7 +138,6 @@ &i2c0 {
 
 	hdmi@39 {
 		compatible = "adi,adv7511w";
-		#sound-dai-cells = <0>;
 		reg = <0x39>;
 		interrupts-extended = <&gpio1 20 IRQ_TYPE_LEVEL_LOW>;
 		avdd-supply = <&vcc1v8_d4>;