RTL822X_VND2_LCR6
ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, RTL822X_VND2_LCR6,
val = phy_read_mmd(phydev, MDIO_MMD_VEND2, RTL822X_VND2_LCR6);
ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, RTL822X_VND2_LCR6,