diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index daba534a2c04..36a626e9e37e 100755
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -498,7 +498,7 @@
 		pinctrl-names = "default", "idle", "udbg";
 		pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_dectn &sdmmc0_bus4>;
 		pinctrl-1 = <&sdmmc0_gpio>;
-		pinctrl-2 = <&uart2_xfer>;
+		pinctrl-2 = <&uart2_xfer &sdmmc0_dectn>;
 		cd-gpios = <&gpio1 GPIO_C1 GPIO_ACTIVE_HIGH>;/*CD GPIO*/
 		clocks = <&clk_sdmmc0>, <&clk_gates5 10>;
 		clock-names = "clk_mmc", "hclk_mmc";
diff --git a/arch/arm/boot/dts/rk312x.dtsi b/arch/arm/boot/dts/rk312x.dtsi
index 4e0bc5ae0d2f..a532414aaf04 100755
--- a/arch/arm/boot/dts/rk312x.dtsi
+++ b/arch/arm/boot/dts/rk312x.dtsi
@@ -549,7 +549,7 @@
 		pinctrl-names = "default", "idle", "udbg";
 		pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd  &sdmmc0_dectn &sdmmc0_bus4>;
 		pinctrl-1 = <&sdmmc0_gpio>;
-		pinctrl-2 = <&uart2_xfer>;
+		pinctrl-2 = <&uart2_xfer &sdmmc0_dectn>;
 		clocks = <&clk_sdmmc0>, <&clk_gates5 10>;
 		clock-names = "clk_mmc", "hclk_mmc";
 		dmas = <&pdma 10>;