RTL8226_VND2_UNKNOWN_D068
ret = phy_read_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_UNKNOWN_D068);
ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_UNKNOWN_D068, 0x7, 0x1);
ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_UNKNOWN_D068,
ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, RTL8226_VND2_UNKNOWN_D068,