diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c
index 95c6c4f02..44fcfb1e0 100644
--- a/drivers/power/supply/rk817_charger.c
+++ b/drivers/power/supply/rk817_charger.c
@@ -625,10 +625,10 @@ static irqreturn_t rk817_plug_out_isr(int irq, void *cg)
 	 * For some reason the bits of RK817_PMIC_CHRG_IN reset whenever the
 	 * power cord is unplugged. This was not documented in the BSP kernel
 	 * or the datasheet and only discovered by trial and error. Set minimum
-	 * USB input voltage to 4.5v and enable USB voltage input limit.
+	 * USB input voltage to 4.0v and enable USB voltage input limit.
 	 */
 	regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
-			  RK817_USB_VLIM_SEL, (0x05 << 4));
+			  RK817_USB_VLIM_SEL, 0x00);
 	regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_VLIM_EN,
 			  (0x01 << 7));

@@ -1008,11 +1008,11 @@ static int rk817_battery_init(struct rk817_charger *charger,
 		return ret;

 	/*
-	 * Set minimum USB input voltage to 4.5v and enable USB voltage input
+	 * Set minimum USB input voltage to 4.0v and enable USB voltage input
 	 * limit.
 	 */
 	regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
-			  RK817_USB_VLIM_SEL, (0x05 << 4));
+			  RK817_USB_VLIM_SEL, 0x00);
 	regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_VLIM_EN,
 			  (0x01 << 7));