From nobody Tue Feb 10 14:32:15 2026 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9458B14AD2D; Wed, 30 Apr 2025 16:55:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746032135; cv=none; b=OEFc2kH7FIXhtPnGGrrDmAQVyrwnxu7Q+KSyMb4Q/bvDXmR4SQR7vpYNu3Hbl0VzJ/u1SXKNPgGSuUeiROdiDuO+OvZThyZ8VI6f/Y9/P8fVCVGkJQF2UG8ohf0v3vPjjSYqQ/HDrKSyXW3b5hCkBkqzR4IJPEuz/N/Im2UOQzs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746032135; c=relaxed/simple; bh=L0RKKwiQ7GyKl4xfqFhpjFxweQu23Zgw/+jPFJXvplY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=r7c0D+HDxPUid2w3SBGeePH6qH0H7SkUYJ00rg0H1FmAOuIn2NyBEk/kM76WMPj5CZuZqBszxhwImpcjbbmLFimSja8m6mpkVuwhkjMx/wl1q1RF4Fd7g2ExDD7t7o6MqwPy6B73m0BuMD/v6UnsqypDJC3pmSwWPK21J7GPmCo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=eMYfExz/; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="eMYfExz/" Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 53UCTNne004579; Wed, 30 Apr 2025 18:55:14 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= iKq3Hl0BrIcuMMTCUIpmWVs6NCKyQQcOHdChQ0yRkYc=; b=eMYfExz/m4143DkQ BKXwK1tP2QdWw06akhjwl+6K6BisWJZaY2k7gFM8yttwy0kRfYZQVkIbI5u1ZnV5 Shf8jMi3fOEYuMBAlkC3PfkqXpk2JsiOBR8Y1V8pCtGQKmaJJvJHfyO/iyrVXzyX 7VEZ9Gx3d+Jps9z7uP4WlO20VfS11DNy4dstDzTnTWEbZkjuKL41Rek+LuRDeBEH L4iFMXLHVnFwvVoX1VblH1hEExiBz7zVJb3x9cdnekm0KsWv7SyvmvdlrhvINpOw lrsXYXFsjwaDSuA4qqIyHl4QSfBXaFVmfq4KlIYwpMhOR9GINl84Uo85Fq2cXEGH etSydw== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 46b6tf483u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Apr 2025 18:55:14 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id C38C74004C; Wed, 30 Apr 2025 18:54:09 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 362E6A47ACC; Wed, 30 Apr 2025 18:53:31 +0200 (CEST) Received: from localhost (10.252.20.195) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 30 Apr 2025 18:53:30 +0200 From: Olivier Moysan To: Olivier Moysan , Arnaud Pouliquen , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Maxime Coquelin , Alexandre Torgue CC: , , , Subject: [PATCH 2/2] ASoC: stm32: sai: add a check on minimal kernel frequency Date: Wed, 30 Apr 2025 18:52:09 +0200 Message-ID: <20250430165210.321273-3-olivier.moysan@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250430165210.321273-1-olivier.moysan@foss.st.com> References: <20250430165210.321273-1-olivier.moysan@foss.st.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-04-30_05,2025-04-24_02,2025-02-21_01 Content-Type: text/plain; charset="utf-8" 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: b1d2e4067dc6 ("ASoC: stm32: sai: add stm32mp25 support") Signed-off-by: Olivier Moysan --- sound/soc/stm/stm32_sai_sub.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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 =3D 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 >=3D sai_ck_min_rate) return 0; =20 /* --=20 2.25.1