24 bits recording from DMIC is not supported for KBL platform because
the TDM slot between PCH and codec is 16 bits only. We should add a
constraint to remove that unsupported format.

Signed-off-by: Yu-Hsuan Hsu <yuhs...@chromium.org>
---
 sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c 
b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
index 74dda8784f1a01..67b276a65a8d2d 100644
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -400,6 +400,9 @@ static int kabylake_dmic_startup(struct snd_pcm_substream 
*substream)
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
                        dmic_constraints);
 
+       runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
+       snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
+
        return snd_pcm_hw_constraint_list(substream->runtime, 0,
                        SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 }
-- 
2.23.0.162.g0b9fbb3734-goog

Reply via email to