diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c
index 0bc97698af15..d335f484fcd8 100644
--- a/drivers/usb/otg/twl4030-usb.c
+++ b/drivers/usb/otg/twl4030-usb.c
@@ -124,7 +124,6 @@
 #define PHY_DPLL_CLK			(1 << 0)
 
 /* In module TWL4030_MODULE_PM_MASTER */
-#define PROTECT_KEY			0x0E
 #define STS_HW_CONDITIONS		0x0F
 
 /* In module TWL4030_MODULE_PM_RECEIVER */
@@ -418,8 +417,13 @@ static void twl4030_phy_resume(struct twl4030_usb *twl)
 static int twl4030_usb_ldo_init(struct twl4030_usb *twl)
 {
 	/* Enable writing to power configuration registers */
-	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0xC0, PROTECT_KEY);
-	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x0C, PROTECT_KEY);
+	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
+			TWL4030_PM_MASTER_KEY_CFG1,
+			TWL4030_PM_MASTER_PROTECT_KEY);
+
+	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
+			TWL4030_PM_MASTER_KEY_CFG2,
+			TWL4030_PM_MASTER_PROTECT_KEY);
 
 	/* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/
 	/*twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/
@@ -455,7 +459,8 @@ static int twl4030_usb_ldo_init(struct twl4030_usb *twl)
 	twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
 
 	/* disable access to power configuration registers */
-	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, PROTECT_KEY);
+	twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
+			TWL4030_PM_MASTER_PROTECT_KEY);
 
 	return 0;