#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 */
 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);*/
        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;