MII_1000TC
gem_mii_write(dp, MII_1000TC, val);
ctl1000 = gem_mii_read(dp, MII_1000TC);
MII_1000TC, MII_1000TC_CFG_EN);
usbgem_mii_write(dp, MII_1000TC, val, errp);
ctl1000 = usbgem_mii_read(dp, MII_1000TC, &err);
MII_1000TC, MII_1000TC_CFG_EN, &err);