GSWIP_MDIO_CTRL_BUSY
!(ctrl & GSWIP_MDIO_CTRL_BUSY), 40, 4000);
GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_WR |
GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_RD |