LASI_CTRL
err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, &lasi_ctrl);
err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, &lasi_ctrl);
return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 1);
return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 0);