RTL8226_VND2_ADCCAL_OFFSET
ret = phy_read_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_ADCCAL_OFFSET);
ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_ADCCAL_OFFSET,