B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL
b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, 0x45AF);
b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, lna);
b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, low_gain);