MSCC_PHY_EXT_PHY_CNTL_1
val = phy_read(phydev, MSCC_PHY_EXT_PHY_CNTL_1);
ret = phy_write(phydev, MSCC_PHY_EXT_PHY_CNTL_1, val);
ret = phy_modify(phydev, MSCC_PHY_EXT_PHY_CNTL_1, MEDIA_OP_MODE_MASK,
reg_val = phy_read(phydev, MSCC_PHY_EXT_PHY_CNTL_1);
rc = phy_write(phydev, MSCC_PHY_EXT_PHY_CNTL_1, reg_val);