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| author | Stefano Radaelli <stefano.r@variscite.com> | 2026-02-13 16:03:55 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-02-22 23:52:23 +0000 |
| commit | d075cef4af6327a5de4bee7bf77591e3201e54f4 (patch) | |
| tree | 381f3ece16c882813853de2151a5c68d68ac6ff5 /include | |
| parent | 5879521cb558871472b97c4744dbe634a4286f0e (diff) | |
| download | linux-d075cef4af6327a5de4bee7bf77591e3201e54f4.tar.gz linux-d075cef4af6327a5de4bee7bf77591e3201e54f4.zip | |
ASoC: simple-card-utils: add sysclk ordering support
When simple-audio-card programs sysclk for CPU and codec DAIs during
hw_params, the ordering of these calls may matter on some platforms.
Some CPU DAIs finalize or adjust the MCLK rate as part of their
set_sysclk() callback (for example by calling clk_set_rate()). If the
codec sysclk is configured before the CPU DAI applies the final MCLK
rate, the codec may configure its internal clocking based on a
non-final MCLK value.
Such situations can arise depending on the clock provider/consumer
relationship between the CPU DAI and the codec.
Introduce an explicit sysclk ordering enum in simple-card-utils and use
it to control the order of snd_soc_dai_set_sysclk() calls in the mclk-fs
handling path. The default behaviour remains unchanged (codec-first)
to avoid regressions.
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/20260213150355.442609-1-stefano.r@variscite.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/simple_card_utils.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h index 69a9c9c4d0e9..915e6ae5f68d 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -54,6 +54,11 @@ struct prop_nums { int platforms; }; +enum simple_util_sysclk_order { + SIMPLE_SYSCLK_ORDER_CODEC_FIRST = 0, + SIMPLE_SYSCLK_ORDER_CPU_FIRST, +}; + struct simple_util_priv { struct snd_soc_card snd_card; struct simple_dai_props { @@ -63,6 +68,7 @@ struct simple_util_priv { struct snd_soc_codec_conf *codec_conf; struct prop_nums num; unsigned int mclk_fs; + enum simple_util_sysclk_order sysclk_order; } *dai_props; struct simple_util_jack hp_jack; struct simple_util_jack mic_jack; |