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(unknown [172.20.64.188]) by smtprelay.cixcomputing.com (Postfix) with ESMTPSA id 036504126F83; Thu, 19 Mar 2026 18:17:24 +0800 (CST) From: Jun Guo To: peter.chen@cixtech.com, fugang.duan@cixtech.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, vkoul@kernel.org, ychuang3@nuvoton.com, schung@nuvoton.com, robin.murphy@arm.com, Frank.Li@kernel.org Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cix-kernel-upstream@cixtech.com, linux-arm-kernel@lists.infradead.org, Jun Guo Subject: [PATCH v3 0/3] dmaengine: arm-dma350: support combined IRQ topology Date: Thu, 19 Mar 2026 18:17:20 +0800 Message-Id: <20260319101723.246539-1-jun.guo@cixtech.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: OSA0EPF000000CD:EE_|OSNPR06MB8443:EE_ Content-Type: text/plain X-MS-Office365-Filtering-Correlation-Id: c053967a-99c0-4610-2e02-08de85a0b82a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|36860700016|82310400026|1800799024|56012099003|18002099003|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:222.71.101.198;CTRY:CN;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:smtprelay.cixcomputing.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(7416014)(376014)(36860700016)(82310400026)(1800799024)(56012099003)(18002099003)(921020);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: hz4F6G05+fXmt1Xej3g1Q0U9/RrTxqr+d26aa9RFINKDcNq79f6S3G9zZn2NrsU+Icv9nMre44/nOE5+amj0cw3Rf4FJmQp+L+hxqxQU2NXAhx1gb1OOPCS5UtWVbE43y6Y42ybV+E888Rac2TxPrgHdrvTQLG6nUNi5BsfZyLrk4JaJm81CQ/kNIl6nPstY7NZ3YUXWg9+fFG6+P4miovdHfXI2O01cTLQYJpHweNssJoq07jGrv9garnAE+y5Z46cb4bQLwYxSnIgeNvXJcilUiZ5coLKYL5YVRS3IztNbsVbyYQlKfbstPT1V1k2oUQOrsIUKp6WL/miHbCtfnyUZL3rvP1h86141V44CEcNYWB55dPWPB9GKNx1Iox9vHRV39vtqbG5BMCH4dSbDyRT9JbZe09fRTgn+Rmc3vufSW6DHJG9x4d0nyARrSi61 X-OriginatorOrg: cixtech.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Mar 2026 10:17:26.1924 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c053967a-99c0-4610-2e02-08de85a0b82a X-MS-Exchange-CrossTenant-Id: 0409f77a-e53d-4d23-943e-ccade7cb4811 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=0409f77a-e53d-4d23-943e-ccade7cb4811;Ip=[222.71.101.198];Helo=[smtprelay.cixcomputing.com] X-MS-Exchange-CrossTenant-AuthSource: OSA0EPF000000CD.apcprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: OSNPR06MB8443 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260319_031735_813077_7458C65C X-CRM114-Status: GOOD ( 11.49 ) 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 DMA-350 can be integrated with either one interrupt per channel or a single combined interrupt for all channels. This series adds support for the combined IRQ topology while keeping compatibility with the per-channel topology. Patch 1 updates the DT binding to document both interrupt topologies (1 combined IRQ or 8 per-channel IRQs) and keeps "arm,dma-350" as the generic compatible, with optional SoC-specific fallback compatible. Patch 2 updates the driver to detect IRQ topology at runtime using platform_irq_count(), handles both modes in one code path, and enables DMANSECCTRL.INTREN_ANYCHINTR only when combined IRQ mode is used. Patch 3 adds the Sky1 DMA DT node using the combined IRQ topology. The series was tested on CIX SKY1 with dmatest: % echo 2000 > /sys/module/dmatest/parameters/timeout % echo 1 > /sys/module/dmatest/parameters/iterations % echo "" > /sys/module/dmatest/parameters/channel % echo 1 > /sys/module/dmatest/parameters/run Changes in v3: - Rework binding compatible description to match generic-first model. - Keep interrupts schema support for both 1-IRQ and 8-IRQ topologies. - Drop SoC match-data dependency for IRQ mode selection. - Detect IRQ topology via platform_irq_count() in probe path. - Refactor IRQ handling into a shared channel handler. - Enable DMANSECCTRL.INTREN_ANYCHINTR only in combined IRQ mode. Changes in v2: - Update to kernel standards, enhance patch description, and refactor driver to use match data for hardware differentiation instead of compatible strings. Jun Guo (3): dt-bindings: dma: arm-dma350: document generic and combined IRQ topologies dma: arm-dma350: support combined IRQ mode with runtime IRQ topology detection arm64: dts: cix: add DT nodes for DMA .../devicetree/bindings/dma/arm,dma-350.yaml | 31 ++-- arch/arm64/boot/dts/cix/sky1.dtsi | 7 + drivers/dma/arm-dma350.c | 165 +++++++++++++++--- 3 files changed, 167 insertions(+), 36 deletions(-) -- 2.34.1