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Tue, 17 Mar 2026 02:49:33 -0700 From: Sheetal To: Mark Brown , Kuninori Morimoto , Jaroslav Kysela , "Takashi Iwai" , Liam Girdwood , Thierry Reding , Jonathan Hunter CC: Mohan Kumar , , , , Sheetal Subject: [PATCH 1/2] ASoC: simple-card-utils: add ignore_zero_sysclk flag Date: Tue, 17 Mar 2026 09:49:09 +0000 Message-ID: <20260317094910.1582011-2-sheetal@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260317094910.1582011-1-sheetal@nvidia.com> References: <20260317094910.1582011-1-sheetal@nvidia.com> Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF00036F40:EE_|CH3PR12MB9729:EE_ X-MS-Office365-Filtering-Correlation-Id: 09e08f53-22c1-438c-7f24-08de840a86dc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700016|1800799024|56012099003|22082099003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: n7h2c782TxsekZHzWvwWWUpHt+yposmU3m0/+wmkrfccf0HU9FKQxBPaRS2AFbS7hzfYsaLoX2G6TbD00SWQWcVToMZlY2cW6e6cVrcJLWdKxkbbzziJcwSt+JVtZTmv1ghM30VbAmzcLPHxkQAXpucs4vaju4/OE1ANO+jB1QkriiEgSEev5lL8Cm1VnpWCAjcKuDBzITkIubWKiPTOGIc4n/jjYljp9Gu5PHQvd9cPwu8LV9g1xfhe9sEkkQPPTEIE4q0SMpz5pqvoGnplSylIYXEifuWch8BwVIE6kr07dWRImmDhZnSibCik0XWH1w5oP+f77dTwxYqgoPZJd9kqyqvDr5BEuL7yVKgY5I1KG6AnFGGXFIZwOEXWZmxAWbdAbFJkh9j+dXKRQ691Tz0bugM7uxq9DViEB085kV6TRz46CbrEq2cXBGuq/qfA X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Mar 2026 09:49:47.8953 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 09e08f53-22c1-438c-7f24-08de840a86dc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF00036F40.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9729 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/simple-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 *substream) for_each_prop_dai_cpu(props, i, dai) { struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, i); - if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai)) + if (!priv->ignore_zero_sysclk && props->mclk_fs && + !dai->clk_fixed && !snd_soc_dai_active(cpu_dai)) snd_soc_dai_set_sysclk(cpu_dai, 0, 0, dai->clk_direction); simple_clk_disable(dai); @@ -391,7 +392,8 @@ void simple_util_shutdown(struct snd_pcm_substream *substream) for_each_prop_dai_codec(props, i, dai) { struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, i); - if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai)) + if (!priv->ignore_zero_sysclk && props->mclk_fs && + !dai->clk_fixed && !snd_soc_dai_active(codec_dai)) snd_soc_dai_set_sysclk(codec_dai, 0, 0, dai->clk_direction); simple_clk_disable(dai); -- 2.17.1