From d075cef4af6327a5de4bee7bf77591e3201e54f4 Mon Sep 17 00:00:00 2001 From: Stefano Radaelli Date: Fri, 13 Feb 2026 16:03:55 +0100 Subject: 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 Acked-by: Kuninori Morimoto Link: https://patch.msgid.link/20260213150355.442609-1-stefano.r@variscite.com Signed-off-by: Mark Brown --- include/sound/simple_card_utils.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') 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; -- cgit v1.2.3