NIG_REG_BMAC0_REGS_OUT_EN
REG_WR(cb, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x1);
REG_WR(cb, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x0);
REG_WR(cb, NIG_REG_BMAC0_REGS_OUT_EN + port*4, 0x1);
u32 nig_bmac_enable = REG_RD(cb, NIG_REG_BMAC0_REGS_OUT_EN + port*4);