diff --git a/arch/arm64/boot/dts/rockchip/rk3588.dtsi b/arch/arm64/boot/dts/rockchip/rk3588.dtsi
index c75f3d6dcf10..357e879cc0b4 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588.dtsi
@@ -445,6 +445,7 @@
 		phy-names = "dp";
 		power-domains = <&power RK3588_PD_VO1>;
 		rockchip,grf = <&vo1_grf>;
+		#sound-dai-cells = <1>;
 		status = "disabled";
 
 		ports {
diff --git a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
index 2cc2481592ec..fee6171e01ab 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
@@ -5176,6 +5176,7 @@
 		phy-names = "dp";
 		power-domains = <&power RK3588_PD_VO1>;
 		rockchip,grf = <&vo1_grf>;
+		#sound-dai-cells = <1>;
 		status = "disabled";
 
 		ports {