diff --git a/arch/arm/dts/rk3188-radxarock.dts b/arch/arm/dts/rk3188-radxarock.dts
index ac931e1..6136712 100644
--- a/arch/arm/dts/rk3188-radxarock.dts
+++ b/arch/arm/dts/rk3188-radxarock.dts
@@ -104,6 +104,8 @@
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		gpio = <&gpio3 1 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdmmc_pwr>;
 		startup-delay-us = <100000>;
 		vin-supply = <&vcc_io>;
 	};
@@ -334,6 +336,12 @@
 		};
 	};
 
+	sd0 {
+		sdmmc_pwr: sdmmc-pwr {
+			rockchip,pins = <RK_GPIO3 1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	usb {
 		host_vbus_drv: host-vbus-drv {
 			rockchip,pins = <0 3 RK_FUNC_GPIO &pcfg_pull_none>;