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| author | Fabio Estevam <festevam@denx.de> | 2023-07-06 19:18:27 -0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-07-09 22:42:56 +0100 |
| commit | 86867aca7330e4fbcfa2a117e20b48bbb6c758a9 (patch) | |
| tree | 45af01f5c1d20b5b3fb5f245d379e9b8859fbe5b | |
| parent | 980d97efdb30b8baa74b61fec086becb3aedbb90 (diff) | |
| download | lwn-86867aca7330e4fbcfa2a117e20b48bbb6c758a9.tar.gz lwn-86867aca7330e4fbcfa2a117e20b48bbb6c758a9.zip | |
ASoC: fsl_sai: Revert "ASoC: fsl_sai: Enable MCTL_MCLK_EN bit for master mode"
This reverts commit ff87d619ac180444db297f043962a5c325ded47b.
Andreas reports that on an i.MX8MP-based system where MCLK needs to be
used as an input, the MCLK pin is actually an output, despite not having
the 'fsl,sai-mclk-direction-output' property present in the devicetree.
This is caused by commit ff87d619ac18 ("ASoC: fsl_sai: Enable
MCTL_MCLK_EN bit for master mode") that sets FSL_SAI_MCTL_MCLK_EN
unconditionally for imx8mm/8mn/8mp/93, causing the MCLK to always
be configured as output.
FSL_SAI_MCTL_MCLK_EN corresponds to the MOE (MCLK Output Enable) bit
of register MCR and the drivers sets it when the
'fsl,sai-mclk-direction-output' devicetree property is present.
Revert the commit to allow SAI to use MCLK as input as well.
Cc: stable@vger.kernel.org
Fixes: ff87d619ac18 ("ASoC: fsl_sai: Enable MCTL_MCLK_EN bit for master mode")
Reported-by: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20230706221827.1938990-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 5e09f634c61b..54b4bf3744c6 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -507,12 +507,6 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) savediv / 2 - 1); } - if (sai->soc_data->max_register >= FSL_SAI_MCTL) { - /* SAI is in master mode at this point, so enable MCLK */ - regmap_update_bits(sai->regmap, FSL_SAI_MCTL, - FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN); - } - return 0; } |