MV88E6393X_SERDES_POC
err = mv88e639x_modify(mpcs, MV88E6393X_SERDES_POC,
err = mv88e639x_read(mpcs, MV88E6393X_SERDES_POC, &poc);
{ MDIO_MMD_PHYXS, MV88E6393X_SERDES_POC,
err = mv88e639x_modify(mpcs, MV88E6393X_SERDES_POC,