MAC_MDIO_CONTROL
emac_wr(priv, MAC_MDIO_CONTROL, cmd);
ret = readl_poll_timeout(priv->iobase + MAC_MDIO_CONTROL, val,
emac_wr(priv, MAC_MDIO_CONTROL, cmd);
ret = readl_poll_timeout(priv->iobase + MAC_MDIO_CONTROL, val,