diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-b.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-b.dts
index b276eb0810c7..0ab611e9fbb7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-b.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-b.dts
@@ -290,7 +290,7 @@
 				regulator-name = "vdd_gpu";
 				regulator-always-on;
 				regulator-boot-on;
-				regulator-min-microvolt = <900000>;
+				regulator-min-microvolt = <500000>;
 				regulator-max-microvolt = <1350000>;
 				regulator-init-microvolt = <900000>;
 				regulator-ramp-delay = <6001>;