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Received: from PA4PR04MB7821.eurprd04.prod.outlook.com (2603:10a6:102:c5::5) by MRWPR04MB12354.eurprd04.prod.outlook.com (2603:10a6:501:81::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9745.28; Tue, 31 Mar 2026 10:13:17 +0000 Received: from PA4PR04MB7821.eurprd04.prod.outlook.com ([fe80::67dc:4bd2:8552:9b50]) by PA4PR04MB7821.eurprd04.prod.outlook.com ([fe80::67dc:4bd2:8552:9b50%5]) with mapi id 15.20.9745.027; Tue, 31 Mar 2026 10:13:17 +0000 From: Robby Cai To: p.zabel@pengutronix.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, Frank.Li@nxp.com, s.hauer@pengutronix.de, festevam@gmail.com Cc: devicetree@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, aisheng.dong@nxp.com Subject: [PATCH 0/2] Fix active-low handling of MIPI CSI resets on i.MX8MQ Date: Tue, 31 Mar 2026 18:13:29 +0800 Message-Id: <20260331101331.1405588-1-robby.cai@nxp.com> X-Mailer: git-send-email 2.37.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SG2PR03CA0094.apcprd03.prod.outlook.com (2603:1096:4:7c::22) To PA4PR04MB7821.eurprd04.prod.outlook.com (2603:10a6:102:c5::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PA4PR04MB7821:EE_|MRWPR04MB12354:EE_ X-MS-Office365-Filtering-Correlation-Id: 44316c6f-e435-4cb4-29df-08de8f0e2077 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|19092799006|376014|7416014|52116014|38350700014|56012099003|18002099003; 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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 Hi all, This series updates the Device Tree bindings and reset controller driver to correctly reflect the active-low polarity of the MIPI CSI reset lines on i.MX8MQ. The MIPI CSI reset signals are active-low, but the original reset identifiers and driver implementation did not clearly indicate or handle this polarity. Patch 1 updates the DT binding header to add *_RESET_N variants for the MIPI CSI reset definitions, while keeping the old names temporarily for DT ABI compatibility. Patch 2 updates the imx7 reset controller driver to correctly treat these resets as active-low. Thanks, Robby Robby Cai (2): dt-bindings: reset: imx8mq: Add _N suffix to IMX8MQ_RESET_MIPI_CSI*_RESET reset: imx7: Fix handling of MIPI CSI resets on i.MX8MQ drivers/reset/reset-imx7.c | 18 ++++++++++++------ include/dt-bindings/reset/imx8mq-reset.h | 18 ++++++++++++------ 2 files changed, 24 insertions(+), 12 deletions(-) -- 2.37.1