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charset="utf-8" Commit 2458adb8f92a ("SoC: simple-card-utils: set 0Hz to sysclk when shutdown") updated the simple-card-util driver to send 0Hz frequency requests during stream shutdown, which can request frequencies lower than a platform may support. Add ignore_zero_sysclk flag to struct simple_util_priv to allow drivers to ignore these 0Hz sysclk requests when they would result in a clock frequency below the hardware's minimum allowed rate. Signed-off-by: Sheetal --- include/sound/simple_card_utils.h | 1 + sound/soc/generic/simple-card-utils.c | 6 ++++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_= utils.h index 915e6ae5f68d..02ede92e8269 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -81,6 +81,7 @@ struct simple_util_priv { const struct snd_soc_ops *ops; unsigned int dpcm_selectable:1; unsigned int force_dpcm:1; + unsigned int ignore_zero_sysclk:1; }; #define simple_priv_to_card(priv) (&(priv)->snd_card) #define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simp= le-card-utils.c index 3115e1f37c0c..04ae242a51d0 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -383,7 +383,8 @@ void simple_util_shutdown(struct snd_pcm_substream *sub= stream) for_each_prop_dai_cpu(props, i, dai) { struct snd_soc_dai *cpu_dai =3D snd_soc_rtd_to_cpu(rtd, i); 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charset="utf-8" Tegra AUD_MCLK has a minimum allowed clock frequency of 1.5MHz, but 0Hz requests cause the system to set a lower rate than this minimum, resulting in the following errors from the Tegra Boot and Power Management Processor (BPMP) that configures the clocks: verify_rate_range: FMON_AUD_MCLK: rate 383999 below min 1500000 fmon_update_config: FMON_AUD_MCLK: detected fault 0x80 Enable the ignore_zero_sysclk flag for Tegra audio graph card to ignore these 0Hz sysclk requests during stream shutdown. Signed-off-by: Sheetal --- sound/soc/tegra/tegra_audio_graph_card.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/tegra/tegra_audio_graph_card.c b/sound/soc/tegra/teg= ra_audio_graph_card.c index ea10e6e8a9fe..3c88c43e1273 100644 --- a/sound/soc/tegra/tegra_audio_graph_card.c +++ b/sound/soc/tegra/tegra_audio_graph_card.c @@ -209,6 +209,7 @@ static int tegra_audio_graph_probe(struct platform_devi= ce *pdev) card->component_chaining =3D 1; priv->simple.ops =3D &tegra_audio_graph_ops; priv->simple.force_dpcm =3D 1; + priv->simple.ignore_zero_sysclk =3D 1; =20 return audio_graph_parse_of(&priv->simple, dev); } --=20 2.17.1