MREGBIT_START_MDIO_TRANS
cmd |= MREGBIT_START_MDIO_TRANS | MREGBIT_MDIO_READ_WRITE;
!(val & MREGBIT_START_MDIO_TRANS), 100, 10000);
cmd |= MREGBIT_START_MDIO_TRANS;
!(val & MREGBIT_START_MDIO_TRANS), 100, 10000);