6.6-stable review patch. If anyone has any objections, please let me know.
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From: Srinivas Kandagatla srinivas.kandagatla@oss.qualcomm.com
commit 81c53b52de21b8d5a3de55ebd06b6bf188bf7efd upstream.
DSP expects the periods to be aligned to fragment sizes, currently setting up to hw constriants on periods bytes is not going to work correctly as we can endup with periods sizes aligned to 32 bytes however not aligned to fragment size.
Update the constriants to use fragment size, and also set at step of 10ms for period size to accommodate DSP requirements of 10ms latency.
Fixes: 2a9e92d371db ("ASoC: qdsp6: q6asm: Add q6asm dai driver") Cc: Stable@vger.kernel.org Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@oss.qualcomm.com Tested-by: Alexey Klimov alexey.klimov@linaro.org # RB5, RB3 Link: https://patch.msgid.link/20251023102444.88158-4-srinivas.kandagatla@oss.qual... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/soc/qcom/qdsp6/q6asm-dai.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/sound/soc/qcom/qdsp6/q6asm-dai.c +++ b/sound/soc/qcom/qdsp6/q6asm-dai.c @@ -413,13 +413,13 @@ static int q6asm_dai_open(struct snd_soc }
ret = snd_pcm_hw_constraint_step(runtime, 0, - SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32); + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 480); if (ret < 0) { dev_err(dev, "constraint for period bytes step ret = %d\n", ret); } ret = snd_pcm_hw_constraint_step(runtime, 0, - SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32); + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 480); if (ret < 0) { dev_err(dev, "constraint for buffer bytes step ret = %d\n", ret);