This is a note to let you know that I've just added the patch titled
ASoC: fsl_spdif: Disable TX clock when stop
to the 5.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-fsl_spdif-disable-tx-clock-when-stop.patch
and it can be found in the queue-5.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ca3951d506f93e937b3934ce240fb9b1187eb18d
Author: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Date: Thu Mar 10 10:37:43 2022 +0800
ASoC: fsl_spdif: Disable TX clock when stop
[ Upstream commit 6ddf611219ba8f7c8fa0d26b39710a641e7d37a5 ]
The TX clock source may be changed in next case, need to
disable it when stop, otherwise the TX may not work after
changing the clock source, error log is:
aplay: pcm_write:2058: write error: Input/output error
Fixes: a2388a498ad2 ("ASoC: fsl: Add S/PDIF CPU DAI driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
Link: https://lore.kernel.org/r/1646879863-27711-1-git-send-email-shengjiu.wang@xxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index d178b479c8bd..06d4a014f296 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -610,6 +610,8 @@ static void fsl_spdif_shutdown(struct snd_pcm_substream *substream,
mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK |
SCR_TXSEL_MASK | SCR_USRC_SEL_MASK |
SCR_TXFIFO_FSEL_MASK;
+ /* Disable TX clock */
+ regmap_update_bits(regmap, REG_SPDIF_STC, STC_TXCLK_ALL_EN_MASK, 0);
} else {
scr = SCR_RXFIFO_OFF | SCR_RXFIFO_CTL_ZERO;
mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK|
