diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
index 4bac245defbc804c060669d6d6dded82b9fd9f93..83971b19a382401bce82157887ccf74b743e51ac 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
@@ -38,6 +38,15 @@ vcc_1v1_nldo_s3: vcc-1v1-nldo-s3 {
 		vin-supply = <&vcc5v0_sys>;
 	};
 
+	vcc3v3_pcie2x1l2: vcc3v3-pcie2x1l2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_pcie2x1l2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc_3v3_s3>;
+	};
+
 	sound {
 		compatible = "audio-graph-card";
 		label = "Analog";
@@ -131,3 +140,14 @@ hp_detect: hp-detect {
 		};
 	};
 };
+
+&combphy0_ps {
+	status = "okay";
+};
+
+&pcie2x1l2 {
+	reset-gpios = <&gpio3 RK_PB0 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pcie2x1l2>;
+	status = "okay";
+
+};