This is a note to let you know that I've just added the patch titled
ASoC: rockchip: i2s-tdm: Fix trcm mode by setting clock on right mclk
to the 6.9-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-rockchip-i2s-tdm-fix-trcm-mode-by-setting-clock.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ec0fe4c41983feaa70c73ab37b2d8fd6eca61f16
Author: Alibek Omarov <a1ba.omarov@xxxxxxxxx>
Date: Tue Jun 4 21:47:52 2024 +0300
ASoC: rockchip: i2s-tdm: Fix trcm mode by setting clock on right mclk
[ Upstream commit ccd8d753f0fe8f16745fa2b6be5946349731d901 ]
When TRCM mode is enabled, I2S RX and TX clocks are synchronized through
selected clock source. Without this fix BCLK and LRCK might get parented
to an uninitialized MCLK and the DAI will receive data at wrong pace.
However, unlike in original i2s-tdm driver, there is no need to manually
synchronize mclk_rx and mclk_tx, as only one gets used anyway.
Tested on a board with RK3568 SoC and Silergy SY24145S codec with enabled and
disabled TRCM mode.
Fixes: 9e2ab4b18ebd ("ASoC: rockchip: i2s-tdm: Fix inaccurate sampling rates")
Signed-off-by: Alibek Omarov <a1ba.omarov@xxxxxxxxx>
Reviewed-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>
Link: https://msgid.link/r/20240604184752.697313-1-a1ba.omarov@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/rockchip/rockchip_i2s_tdm.c b/sound/soc/rockchip/rockchip_i2s_tdm.c
index 9fa020ef7eab9..ee517d7b5b7bb 100644
--- a/sound/soc/rockchip/rockchip_i2s_tdm.c
+++ b/sound/soc/rockchip/rockchip_i2s_tdm.c
@@ -655,8 +655,17 @@ static int rockchip_i2s_tdm_hw_params(struct snd_pcm_substream *substream,
int err;
if (i2s_tdm->is_master_mode) {
- struct clk *mclk = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
- i2s_tdm->mclk_tx : i2s_tdm->mclk_rx;
+ struct clk *mclk;
+
+ if (i2s_tdm->clk_trcm == TRCM_TX) {
+ mclk = i2s_tdm->mclk_tx;
+ } else if (i2s_tdm->clk_trcm == TRCM_RX) {
+ mclk = i2s_tdm->mclk_rx;
+ } else if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ mclk = i2s_tdm->mclk_tx;
+ } else {
+ mclk = i2s_tdm->mclk_rx;
+ }
err = clk_set_rate(mclk, DEFAULT_MCLK_FS * params_rate(params));
if (err)
