NIG_REG_EGRESS_EMAC0_OUT_EN
REG_WR(bp, NIG_REG_EGRESS_EMAC0_OUT_EN + port*4, 0);
REG_WR(bp, NIG_REG_EGRESS_EMAC0_OUT_EN + port*4, 0x1);
REG_WR(bp, NIG_REG_EGRESS_EMAC0_OUT_EN + port*4, 0x0);