VLAN1
smsc911x_mac_write(pdata, VLAN1, ETH_P_8021Q);
smsc9420_reg_write(pd, VLAN1, ETH_P_8021Q);
smsc9420_reg_read(pd, VLAN1));
ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);