NIG_REG_BMAC0_OUT_EN
REG_WR(sc, NIG_REG_BMAC0_OUT_EN + port*4, 0);
REG_WR(sc, NIG_REG_BMAC0_OUT_EN + port*4, 0x0);
REG_WR(sc, NIG_REG_BMAC0_OUT_EN + port*4, 0x1);