From nobody Wed Nov 27 13:54:21 2024 Received: from mx08-00178001.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 66DBF1F7069; Thu, 10 Oct 2024 14:31:42 +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=1728570704; cv=none; b=PatlWkgc1rtMr7Hb6/ZffKKQ+i+1mES9ATcLrlEroykgOMjp8L2oQjI61zwWxaXvORR7+48rVWTRglRG2Wgt84uRizAZN/d67bttmp0Nq5nD23/IRiX3D3I7i4ROXoNdcspn3ElDMAMq4+C3ZFXRpv3xWcdBjyGnTfuP5JYzGk8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728570704; c=relaxed/simple; bh=KoQGSnpOs6ieXxEnyHHrxeA6S2VnsBKxUAdaTMFg/9U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=IuR9rTpmz4K3R3X/ZkCbDrJMerWrgpM0llI9ddn4YQ0lxokoX114iSAGxtFKFSe+A3E0LtEKFLiu/GLjFTenjvQGLbWmrRYkKNDmlI71ViM7bDSTcd4IUtYcoVCvO5ojH40igV50aJD1Q8upd5RkKkfOFa5ax+SnDfvM2Hvsbto= 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=nJaX0eR7; 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="nJaX0eR7" Received: from pps.filterd (m0369457.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49AE3xWM004150; Thu, 10 Oct 2024 16:31:17 +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= O41xSOzJv31DX5Er3+Tj267w66tdT1K/Yy2IS+3r0fM=; b=nJaX0eR7Z/4Ss7Ld drCUwepSIpU3l3EmEE/katOm4AnSDO+Gajt8JFTpsehTbpyFhysmeFeXK5Id31hJ Mnf5GqvjP/4xZFdyxNGZSTjCsCjK9tojvn+bsW+gwtW7XV2M3DBWWTsrlv+Vnh9f pKcUVZpQXbsHtshyamo9s3gZMfBY9SuVQRADEZH7E2CvjJ3QuFMbKmpvvnEPVqpu k/cC1GURyEil+gb42/WX7zay7qsywXm/VFzPsg5CN4OtS1NlRATidRZ6KIu0AFB7 2IWhlFXf5ny5biXr1ufcZ9J7U59xQk/G6m//NHffWNhe+hK+60eNOg6+17nOJa6v 7Pe8TA== 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 425w7xmw4j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 10 Oct 2024 16:31:17 +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 C7C254005D; Thu, 10 Oct 2024 16:30:24 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id A36D129F351; Thu, 10 Oct 2024 16:28:12 +0200 (CEST) Received: from localhost (10.252.31.182) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Thu, 10 Oct 2024 16:28:12 +0200 From: Amelie Delaunay Date: Thu, 10 Oct 2024 16:27:58 +0200 Subject: [PATCH 08/11] arm64: dts: st: limit axi burst length in dma nodes of stm32mp25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20241010-dma3-mp25-updates-v1-8-adf0633981ea@foss.st.com> References: <20241010-dma3-mp25-updates-v1-0-adf0633981ea@foss.st.com> In-Reply-To: <20241010-dma3-mp25-updates-v1-0-adf0633981ea@foss.st.com> To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue CC: , , , , , Amelie Delaunay X-Mailer: b4 0.14.2 X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 As stated in STM32MP2 Reference Manual [1], chapter "HPDMA allowed AXI maximum length", "The maximum allowed AXI burst length is limited to 16.". To apply this limitation on STM32MP25, add "st,axi-max-burst-len" property in DMA controllers nodes in stm32mp251.dtsi. [1] https://www.st.com/resource/en/reference_manual/rm0457-stm32mp2325xx-ad= vanced-armbased-3264bit-mpus-stmicroelectronics.pdf Signed-off-by: Amelie Delaunay --- arch/arm64/boot/dts/st/stm32mp251.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/s= t/stm32mp251.dtsi index 1167cf63d7e87aaa15c5c1ed70a9f6511fd818d4..443cc8d6ae8e9e2bff1bb862b09= 21d9626bb78e1 100644 --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi @@ -181,6 +181,7 @@ hpdma: dma-controller@40400000 { ; clocks =3D <&scmi_clk CK_SCMI_HPDMA1>; #dma-cells =3D <3>; + st,axi-max-burst-len =3D <16>; }; =20 hpdma2: dma-controller@40410000 { @@ -204,6 +205,7 @@ hpdma2: dma-controller@40410000 { ; clocks =3D <&scmi_clk CK_SCMI_HPDMA2>; #dma-cells =3D <3>; + st,axi-max-burst-len =3D <16>; }; =20 hpdma3: dma-controller@40420000 { @@ -227,6 +229,7 @@ hpdma3: dma-controller@40420000 { ; clocks =3D <&scmi_clk CK_SCMI_HPDMA3>; #dma-cells =3D <3>; + st,axi-max-burst-len =3D <16>; }; =20 rifsc: bus@42080000 { --=20 2.25.1