MR0_SRST
_emac3_reg_write_4(EMAC3_MR0, MR0_SRST);
while ((_emac3_reg_read_4(EMAC3_MR0) & MR0_SRST) == MR0_SRST &&
EMAC_WRITE(sc, EMAC_MR0, MR0_SRST);
while (EMAC_READ(sc, EMAC_MR0) & MR0_SRST) {