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Diffstat (limited to 'sound/soc/codecs/max98090.c')
-rw-r--r--sound/soc/codecs/max98090.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index c2306268cab8..679f0a0f7039 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -2419,6 +2419,8 @@ static int max98090_probe(struct snd_soc_codec *codec)
struct max98090_cdata *cdata;
enum max98090_type devtype;
int ret = 0;
+ int err;
+ unsigned int micbias;
dev_dbg(codec->dev, "max98090_probe\n");
@@ -2503,8 +2505,17 @@ static int max98090_probe(struct snd_soc_codec *codec)
snd_soc_write(codec, M98090_REG_BIAS_CONTROL,
M98090_VCM_MODE_MASK);
+ err = device_property_read_u32(codec->dev, "maxim,micbias", &micbias);
+ if (err) {
+ micbias = M98090_MBVSEL_2V8;
+ dev_info(codec->dev, "use default 2.8v micbias\n");
+ } else if (micbias < M98090_MBVSEL_2V2 || micbias > M98090_MBVSEL_2V8) {
+ dev_err(codec->dev, "micbias out of range 0x%x\n", micbias);
+ micbias = M98090_MBVSEL_2V8;
+ }
+
snd_soc_update_bits(codec, M98090_REG_MIC_BIAS_VOLTAGE,
- M98090_MBVSEL_MASK, M98090_MBVSEL_2V8);
+ M98090_MBVSEL_MASK, micbias);
max98090_add_widgets(codec);