diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
index e666bd5ae..df1fc943b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
@@ -478,6 +478,7 @@ rk808: pmic@1b {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pmic_int_l>;
 		rockchip,system-power-controller;
+		max-buck-steps-per-change = <4>;
 		wakeup-source;
 
 		vcc1-supply = <&vcc5v0_sys>;