the microphone is attached to external codec(adau7002) instead of rt5682.We need to always use 32 bit format on sc7180 to meet the clock requirement of adau7002: The ADAU7002 requires a BCLK rate that is a minimum of 64× the LRCLK sample rate
Signed-off-by: xuyuqing xuyuqing@huaqin.corp-partner.google.com --- sound/soc/qcom/sc7180.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c index de70fa792aea..768566bb57a5 100644 --- a/sound/soc/qcom/sc7180.c +++ b/sound/soc/qcom/sc7180.c @@ -245,6 +245,7 @@ static int sc7180_adau7002_snd_startup(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_pcm_runtime *runtime = substream->runtime;
switch (cpu_dai->id) { case MI2S_PRIMARY: @@ -252,6 +253,8 @@ static int sc7180_adau7002_snd_startup(struct snd_pcm_substream *substream) SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S); + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; + snd_pcm_hw_constraint_msbits(runtime, 0, 32, 32);
break; case MI2S_SECONDARY: