diff --git a/arch/arm64/boot/dts/rk3368-p9_818.dts b/arch/arm64/boot/dts/rk3368-p9_818.dts
index 25191ab1482f..1192c7931896 100755
--- a/arch/arm64/boot/dts/rk3368-p9_818.dts
+++ b/arch/arm64/boot/dts/rk3368-p9_818.dts
@@ -565,8 +565,8 @@
 
 		rk818_dcdc4_reg: regulator@3 {
 			regulator-name= "vccio";
-			regulator-min-microvolt = <3000000>;
-			regulator-max-microvolt = <3000000>;
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
 			regulator-initial-mode = <0x2>;
 			regulator-initial-state = <3>;
 			regulator-state-mem {