From patchwork Thu Oct 10 14:27:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 13830349 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C444ECF11F8 for ; Thu, 10 Oct 2024 14:43:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:CC:To:In-Reply-To:References :Message-ID:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=O41xSOzJv31DX5Er3+Tj267w66tdT1K/Yy2IS+3r0fM=; b=b9QjYOsClsOg+CaARPqIEKMIiF 0/hBDIYBoaNn1Qpboe24RWMyPDO2/+HqsdekQxUZ8btZn4OJL+TfrKnlmwxoAOPyYhS/+g1C2LzWr Ighk57O5p3s2s/NMeS2x7bEghJ6YF90AqePtOfhoWUEbjIWHaGmmWu9VVq9YW1eBS3c1E0H2FStX8 eD6xl99z7V6twm1v29WADVDYy2Z9YQligXtsbIA4ed7Os0+jkUlZe9CPuvzrhjg8GhlvHrDCksU57 jlvReQX/e3bAKUYN/UJGizotOHLLVeTaK6bCBnrTVA1iqJnuBCIWG4X2w9ibwmg+gljuQgIjSKYwI 6qL77TFw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1syuNR-0000000DA6z-3jyg; Thu, 10 Oct 2024 14:42:53 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1syuCR-0000000D71E-27z7 for linux-arm-kernel@lists.infradead.org; Thu, 10 Oct 2024 14:31:33 +0000 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 MIME-Version: 1.0 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-Originating-IP: [10.252.31.182] 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241010_073131_958302_0E0CEF3C X-CRM114-Status: UNSURE ( 9.11 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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-advanced-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/st/stm32mp251.dtsi index 1167cf63d7e87aaa15c5c1ed70a9f6511fd818d4..443cc8d6ae8e9e2bff1bb862b0921d9626bb78e1 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 = <&scmi_clk CK_SCMI_HPDMA1>; #dma-cells = <3>; + st,axi-max-burst-len = <16>; }; hpdma2: dma-controller@40410000 { @@ -204,6 +205,7 @@ hpdma2: dma-controller@40410000 { ; clocks = <&scmi_clk CK_SCMI_HPDMA2>; #dma-cells = <3>; + st,axi-max-burst-len = <16>; }; hpdma3: dma-controller@40420000 { @@ -227,6 +229,7 @@ hpdma3: dma-controller@40420000 { ; clocks = <&scmi_clk CK_SCMI_HPDMA3>; #dma-cells = <3>; + st,axi-max-burst-len = <16>; }; rifsc: bus@42080000 {