MV_AN_21X0_SERDES_CTRL2
err = phy_set_bits_mmd(phydev, MDIO_MMD_AN, MV_AN_21X0_SERDES_CTRL2,
MV_AN_21X0_SERDES_CTRL2, val,
return phy_clear_bits_mmd(phydev, MDIO_MMD_AN, MV_AN_21X0_SERDES_CTRL2,