__phy_modify_mmd
__phy_modify_mmd(phydev, MDIO_MMD_VEND2, 0xb87e, mask, val);
EXPORT_SYMBOL_GPL(__phy_modify_mmd);
ret = __phy_modify_mmd(phydev, devad, regnum, mask, set);
int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
return __phy_modify_mmd(phydev, devad, regnum, 0, val);
return __phy_modify_mmd(phydev, devad, regnum, val, 0);