diff options
| author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2017-06-15 13:07:20 +0800 |
|---|---|---|
| committer | Shengjiu Wang <shengjiu.wang@freescale.com> | 2017-06-15 17:51:44 +0800 |
| commit | 52a91e870b8cc95cbceeda205761134e25626863 (patch) | |
| tree | 70188cd33658d84ef96cb0ab4e3ffa0b08b0445d /sound | |
| parent | 22a06ef13c3da1e104476926ce630f164ef129cb (diff) | |
MLK-15068: ASoC: fsl_ssi: fix the noise issue with S20_3LE Mono bitsream
In master mode, clock of S20_3LE mono bistream is calculated by formula
"2 * params_width * params_rate", and this clock can't be divided from
clock soure, so switch to use the "2 * params_physical_width * params_rate"
formula to fix this issue.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 98226bcf2afd..2f487874237f 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -722,17 +722,23 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, u64 sub, savesub = 100000; unsigned int freq; bool baudclk_is_used; + snd_pcm_format_t sample_format = params_format(hw_params); /* Prefer the explicitly set bitclock frequency */ if (ssi_private->bitclk_freq) freq = ssi_private->bitclk_freq; else { - if (params_channels(hw_params) == 1) + if (params_channels(hw_params) == 1) { freq = 2 * params_width(hw_params) * params_rate(hw_params); - else + + if (sample_format == SNDRV_PCM_FORMAT_S20_3LE) + freq = 2 * params_physical_width(hw_params) * + params_rate(hw_params); + } else { freq = params_channels(hw_params) * 32 * params_rate(hw_params); + } } /* Don't apply it to any non-baudclk circumstance */ |