diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
index 642b6490f..b87b495fa 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -80,6 +80,8 @@ vcc3v3_pcie: vcc3v3-pcie-regulator {
 		regulator-name = "vcc3v3_pcie";
 		regulator-always-on;
 		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
 		vin-supply = <&vcc5v0_sys>;
 	};
 
@@ -523,9 +525,9 @@ &pcie0 {
 	num-lanes = <4>;
 	pinctrl-0 = <&pcie_clkreqnb_cpm>;
 	pinctrl-names = "default";
-	vpcie0v9-supply = <&vcc_0v9>;
-	vpcie1v8-supply = <&vcc_1v8>;
+	vpcie12v-supply = <&vcc12v_dcin>;
 	vpcie3v3-supply = <&vcc3v3_pcie>;
+	bus-scan-delay-ms = <1500>;
 	status = "okay";
 };