MII_DP83640_MISR
int err = phy_read(phydev, MII_DP83640_MISR);
misr = phy_read(phydev, MII_DP83640_MISR);
err = phy_write(phydev, MII_DP83640_MISR, misr);
misr = phy_read(phydev, MII_DP83640_MISR);
err = phy_write(phydev, MII_DP83640_MISR, misr);
irq_status = phy_read(phydev, MII_DP83640_MISR);