NIG_REG_BMAC0_REGS_OUT_EN
val = REG_RD(sc, NIG_REG_BMAC0_REGS_OUT_EN + port * 4);
REG_WR(sc, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x1);
REG_WR(sc, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x0);
REG_WR(sc, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x1);
uint32_t nig_bmac_enable = REG_RD(sc, NIG_REG_BMAC0_REGS_OUT_EN + port*4);