MII_M1111_PHY_EXT_CR
val = phy_read(phydev, MII_M1111_PHY_EXT_CR);
err = phy_clear_bits(phydev, MII_M1111_PHY_EXT_CR,
err = phy_modify(phydev, MII_M1111_PHY_EXT_CR,
return phy_modify(phydev, MII_M1111_PHY_EXT_CR,