NIG_REG_NIG_EMAC0_EN
REG_WR(cb, NIG_REG_NIG_EMAC0_EN + port*4, 0);
REG_WR(cb, NIG_REG_NIG_EMAC0_EN + port*4, 1);
REG_WR(cb, NIG_REG_NIG_EMAC0_EN + port*4, 0);
REG_WR(cb, NIG_REG_NIG_EMAC0_EN + port*4, 0);
reg_val = REG_RD(pdev, NIG_REG_NIG_EMAC0_EN);
reg_val = REG_RD(pdev, NIG_REG_NIG_EMAC0_EN);