ASoC: Intel: byt-rt5640: Enable headset mic bias voltage

Connect "Headset Mic" to "MICBIAS1" supply widget of RT5640 in order to
enable bias voltage for headset microphones.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/sound/soc/intel/byt-rt5640.c b/sound/soc/intel/byt-rt5640.c
index 53d160d39972..234a58de3c53 100644
--- a/sound/soc/intel/byt-rt5640.c
+++ b/sound/soc/intel/byt-rt5640.c
@@ -34,6 +34,7 @@ static const struct snd_soc_dapm_widget byt_rt5640_widgets[] = {
 };
 
 static const struct snd_soc_dapm_route byt_rt5640_audio_map[] = {
+        {"Headset Mic", NULL, "MICBIAS1"},
         {"IN2P", NULL, "Headset Mic"},
         {"IN2N", NULL, "Headset Mic"},
         {"DMIC1", NULL, "Internal Mic"},