MII_WRITE
data = ((data) ? MII_DATA1 : 0) | (dr8(PhyCtrl) & 0xf8) | MII_WRITE;
u32 miiaddr = MII_WRITE | MII_BUSY | MII_CLKRANGE_250_300M;
addr = mii_access(phy_id, idx, MII_WRITE);