BRGPHY_MII_BMCR
if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN)
PHY_WRITE(sc, BRGPHY_MII_BMCR, speed);
PHY_WRITE(sc, BRGPHY_MII_BMCR,
bmcr = PHY_READ(sc, BRGPHY_MII_BMCR);
PHY_WRITE(sc, BRGPHY_MII_BMCR,
PHY_WRITE(sc, BRGPHY_MII_BMCR, BRGPHY_BMCR_LOOP);
BRGPHY_MII_BMCR, BRGPHY_BMCR_RESET);