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| author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2022-05-07 20:14:14 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-05-11 17:42:54 +0100 |
| commit | b776c4a4618ec1b5219d494c423dc142f23c4e8f (patch) | |
| tree | 4e0afa7a76cd8bedf2e67c9c92351d039f89ecb7 /sound/soc | |
| parent | 292709b9cf3ba470af94b62c9bb60284cc581b79 (diff) | |
| download | linux-stable-b776c4a4618ec1b5219d494c423dc142f23c4e8f.tar.gz linux-stable-b776c4a4618ec1b5219d494c423dc142f23c4e8f.tar.bz2 linux-stable-b776c4a4618ec1b5219d494c423dc142f23c4e8f.zip | |
ASoC: fsl_micfil: explicitly clear CHnF flags
There may be failure when start 1 channel recording after
8 channels recording. The reason is that the CHnF
flags are not cleared successfully by software reset.
This issue is triggerred by the change of clearing
software reset bit.
CHnF flags are write 1 clear bits. Clear them by force
write.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1651925654-32060-2-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/fsl/fsl_micfil.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c index cb84d95c3aac..d1cd104f8584 100644 --- a/sound/soc/fsl/fsl_micfil.c +++ b/sound/soc/fsl/fsl_micfil.c @@ -202,6 +202,14 @@ static int fsl_micfil_reset(struct device *dev) if (ret) return ret; + /* + * Set SRES should clear CHnF flags, But even add delay here + * the CHnF may not be cleared sometimes, so clear CHnF explicitly. + */ + ret = regmap_write_bits(micfil->regmap, REG_MICFIL_STAT, 0xFF, 0xFF); + if (ret) + return ret; + return 0; } |