TX0_RF_GAIN_ATTEN
rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6c6c666c);
rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6c6c6b6c);
rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6C6C666C);