diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi b/arch/arm/boot/dts/rk3288-evb.dtsi
index f226ca77c4014b886a5893be73607df5db30b1d7..f549f91e177abe8a5928c98173872a3a81314cbd 100644
--- a/arch/arm/boot/dts/rk3288-evb.dtsi
+++ b/arch/arm/boot/dts/rk3288-evb.dtsi
@@ -218,6 +218,11 @@
 	status = "okay";
 };
 
+&saradc {
+	vref-supply = <&vcc_18>;
+	status = "okay";
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-mmc-highspeed;