diff --git a/arch/arm/boot/dts/rk3506-evb1-v10.dtsi b/arch/arm/boot/dts/rk3506-evb1-v10.dtsi
index c09b0a05953a..f8b60ad7bd7a 100644
--- a/arch/arm/boot/dts/rk3506-evb1-v10.dtsi
+++ b/arch/arm/boot/dts/rk3506-evb1-v10.dtsi
@@ -633,6 +633,8 @@
 	cap-sd-highspeed;
 	no-sd;
 	no-mmc;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc_clk_pins &sdmmc_cmd_pins &sdmmc_bus4_pins>;
 	ignore-pm-notify;
 	keep-power-in-suspend;
 	non-removable;