MII_BCM54XX_EXP_EXP08
ret = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP08);
bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08, ret);
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08,