bcm_phy_write_exp_sel
rc = bcm_phy_write_exp_sel(phydev, MII_BRCM_CORE_EXPB1, 0x10);
rc = bcm_phy_write_exp_sel(phydev, MII_BRCM_CORE_EXPB0, 0x10);
rc = bcm_phy_write_exp_sel(phydev, MII_BRCM_CORE_EXPB0, 0x00);
bcm_phy_write_exp_sel(phydev, 0x00b0, 0x0010);
bcm_phy_write_exp_sel(phydev, 0x00b0, 0x0000);
bcm_phy_write_exp_sel(phydev, 0x0003, 0x0006);
bcm_phy_write_exp_sel(phydev, 0x0003, 0x0000);