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{ "id": 2195292, "url": "http://patchwork.ozlabs.org/api/covers/2195292/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/cover/20260210170814.406883-1-shenwei.wang@nxp.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210170814.406883-1-shenwei.wang@nxp.com>", "list_archive_url": null, "date": "2026-02-10T17:08:10", "name": "[v7,0/4] Enable Remote GPIO over RPMSG on i.MX Platform", "submitter": { "id": 74153, "url": "http://patchwork.ozlabs.org/api/people/74153/?format=api", "name": "Shenwei Wang", "email": "shenwei.wang@nxp.com" }, "mbox": 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], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=wtbFpYrTdulEgD2DiQFMOvshLaHY6WPXpa/V5WFFW2w=;\n b=XvvcXT+MGW0+go/hv/sgOszmx8gPd1KBvo62doDP+AtGvWsHipp+8EBHK4RicsWvAOtPf13roYIcCkmMWadvZwSEFiZ3aUtSSvF4kmlunyVpZDmSP6a0C7E5MsPOvN73lvkB7DrY7J4KmKEQsjRmrosD5TgeA9oIDBFVmbf0FAqZ5uwr71b8SC5XlDjPS0q5y5O3r+M1IkbszgJY6qa85tOpKIxu0EtBoK1D18aMELVBevcowEAXv/zZYz8szACxndPf/1dZ4oTRZAR7JE7iBh4lNE1aMd7Dg7ntcT06IZROQqCmJxD7PGzCl1LfdLiVjnRg1W1eTGLSfL+1dVij2A==", "From": "Shenwei Wang <shenwei.wang@nxp.com>", "To": "Linus Walleij <linusw@kernel.org>,\n\tBartosz Golaszewski <brgl@kernel.org>,\n\tRob Herring <robh@kernel.org>,\n\tKrzysztof Kozlowski <krzk+dt@kernel.org>,\n\tConor Dooley <conor+dt@kernel.org>,\n\tBjorn Andersson <andersson@kernel.org>,\n\tMathieu Poirier <mathieu.poirier@linaro.org>,\n\tShawn Guo <shawnguo@kernel.org>,\n\tSascha Hauer <s.hauer@pengutronix.de>,\n\tJonathan Corbet <corbet@lwn.net>", "Cc": "Pengutronix Kernel Team <kernel@pengutronix.de>,\n\tFabio Estevam <festevam@gmail.com>,\n\tShenwei Wang <shenwei.wang@nxp.com>,\n\tPeng Fan <peng.fan@nxp.com>,\n\tlinux-gpio@vger.kernel.org,\n\tdevicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-remoteproc@vger.kernel.org,\n\timx@lists.linux.dev,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-doc@vger.kernel.org,\n\tlinux-imx@nxp.com,\n\tarnaud.pouliquen@foss.st.com", "Subject": "[PATCH v7 0/4] Enable Remote GPIO over RPMSG on i.MX Platform", "Date": "Tue, 10 Feb 2026 11:08:10 -0600", "Message-ID": "<20260210170814.406883-1-shenwei.wang@nxp.com>", "X-Mailer": "git-send-email 2.43.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "SJ0PR05CA0089.namprd05.prod.outlook.com\n (2603:10b6:a03:332::34) To PAXPR04MB9185.eurprd04.prod.outlook.com\n (2603:10a6:102:231::11)", "Precedence": "bulk", "X-Mailing-List": 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"X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 68d30834-817c-4d24-abc4-08de68c70619", "X-MS-Exchange-CrossTenant-AuthSource": "PAXPR04MB9185.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "10 Feb 2026 17:08:34.5103\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "686ea1d3-bc2b-4c6f-a92c-d99c5c301635", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n OLGiQDTWJX1taUoOf1EEvxyzEODLfMMvtP2nnZj+GibjjADbA9qn5wO9cVMVfQEcW9+77rlSmj97IJYgOAvYHg==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "FRWPR04MB11284" }, "content": "Support the remote devices on the remote processor via the RPMSG bus on\ni.MX platform.\n\nChanges in v7:\n - Reworked the driver to use the rpmsg_driver framework instead of\n platform_driver, based on feedback from Bjorn and Arnaud.\n - Updated gpio-rpmsg.yaml and imx_rproc.yaml according to comments from\n Rob and Arnaud.\n - Further refinements to gpio-rpmsg.yaml per Arnaud's feedback.\n\nChanges in v6:\n - make the driver more generic with the actions below:\n rename the driver file to gpio-rpmsg.c\n remove the imx related info in the function and variable names\n rename the imx_rpmsg.h to rpdev_info.h\n create a gpio-rpmsg.yaml and refer it in imx_rproc.yaml\n - update the gpio-rpmsg.rst according to the feedback from Andrew and\n move the source file to driver-api/gpio\n - fix the bug reported by Zhongqiu Han\n - remove the I2C related info\n\nChanges in v5:\n - move the gpio-rpmsg.rst from admin-guide to staging directory after\n discussion with Randy Dunlap.\n - add include files with some code improvements per Bartosz's comments.\n\nChanges in v4:\n - add a documentation to describe the transport protocol per Andrew's\n comments.\n - add a new handler to get the gpio direction.\n\nChanges in v3:\n - fix various format issue and return value check per Peng 's review\n comments.\n - add the logic to also populate the subnodes which are not in the\n device map per Arnaud's request. (in imx_rproc.c)\n - update the yaml per Frank's review comments.\n\nChanges in v2:\n - re-implemented the gpio driver per Linus Walleij's feedback by using\n GPIOLIB_IRQCHIP helper library.\n - fix various format issue per Mathieu/Peng 's review comments.\n - update the yaml doc per Rob's feedback\n\nShenwei Wang (4):\n dt-bindings: remoteproc: imx_rproc: Add \"rpmsg\" subnode support\n docs: driver-api: gpio: rpmsg gpio driver over rpmsg bus\n gpio: rpmsg: add generic rpmsg GPIO driver\n arm64: dts: imx8ulp: Add rpmsg node under imx_rproc\n\n .../devicetree/bindings/gpio/gpio-rpmsg.yaml | 55 ++\n .../bindings/remoteproc/fsl,imx-rproc.yaml | 53 ++\n Documentation/driver-api/gpio/gpio-rpmsg.rst | 236 +++++++\n Documentation/driver-api/gpio/index.rst | 1 +\n arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 27 +\n drivers/gpio/Kconfig | 16 +\n drivers/gpio/Makefile | 1 +\n drivers/gpio/gpio-rpmsg.c | 583 ++++++++++++++++++\n 8 files changed, 972 insertions(+)\n create mode 100644 Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml\n create mode 100644 Documentation/driver-api/gpio/gpio-rpmsg.rst\n create mode 100644 drivers/gpio/gpio-rpmsg.c\n\n--\n2.43.0" }