MII_KSZPHY_INTCS
rc = phy_read(phydev, MII_KSZPHY_INTCS);
err = phy_write(phydev, MII_KSZPHY_INTCS, KSZPHY_INTCS_ALL);
err = phy_write(phydev, MII_KSZPHY_INTCS, 0);
irq_status = phy_read(phydev, MII_KSZPHY_INTCS);