diff options
| author | Olivier Moysan <olivier.moysan@foss.st.com> | 2025-04-30 18:52:09 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-05-01 08:06:43 +0900 |
| commit | cce34d113e2a592806abcdc02c7f8513775d8b20 (patch) | |
| tree | ef3b4d744f2a52f5e4db26afafa2a27c6a850bf1 /sound | |
| parent | edea92770a3b6454dc796fc5436a3315bb402181 (diff) | |
ASoC: stm32: sai: add a check on minimal kernel frequency
On MP2 SoCs SAI kernel clock rate is managed through
stm32_sai_set_parent_rate() function.
If the kernel clock rate was set previously to a low frequency, this
frequency may be too low to support the newly requested audio stream rate.
However the stm32_sai_rate_accurate() will only check accuracy against
the maximum kernel clock rate. The function will return leaving the kernel
clock rate unchanged.
Add a check on minimal frequency requirement, to avoid this.
Fixes: 2cfe1ff22555 ("ASoC: stm32: sai: add stm32mp25 support")
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://patch.msgid.link/20250430165210.321273-3-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/stm/stm32_sai_sub.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c index 4d018b4bc3f0..bf5299ba11c3 100644 --- a/sound/soc/stm/stm32_sai_sub.c +++ b/sound/soc/stm/stm32_sai_sub.c @@ -447,7 +447,10 @@ static int stm32_sai_set_parent_rate(struct stm32_sai_sub_data *sai, * return immediately. */ sai_curr_rate = clk_get_rate(sai->sai_ck); - if (stm32_sai_rate_accurate(sai_ck_max_rate, sai_curr_rate)) + dev_dbg(&pdev->dev, "kernel clock rate: min [%u], max [%u], current [%u]", + sai_ck_min_rate, sai_ck_max_rate, sai_curr_rate); + if (stm32_sai_rate_accurate(sai_ck_max_rate, sai_curr_rate) && + sai_curr_rate >= sai_ck_min_rate) return 0; /* |