MII_88E6390_MISC_TEST
ret = __phy_read(phydev, MII_88E6390_MISC_TEST);
ret = __phy_write(phydev, MII_88E6390_MISC_TEST, ret);
ret = __phy_read(phydev, MII_88E6390_MISC_TEST);
ret = __phy_write(phydev, MII_88E6390_MISC_TEST, ret);
MII_88E6390_MISC_TEST,