XWAY_MMD_LEDxH
ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, XWAY_MMD_LEDxH(index), 0);
hval = phy_read_mmd(phydev, MDIO_MMD_VEND2, XWAY_MMD_LEDxH(index));
ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, XWAY_MMD_LEDxH(index), hval);