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{ "id": 2196106, "url": "http://patchwork.ozlabs.org/api/covers/2196106/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/cover/20260212213656.662437-1-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": "<20260212213656.662437-1-shenwei.wang@nxp.com>", "list_archive_url": null, "date": "2026-02-12T21:36:52", "name": "[v8,0/4] 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=9u+o5I7Nd09Hz7oiEvZoe78/DtPn0vzoJC/yhbNUzig=;\n b=Lq2yowtJOjE6XR0JyMdFI59LbNMy9ognYbVx0LbIUiA4oS++5xWzV5Mqac2uGL+KYLcHMwL3lgpBlgG+oO7WBLtAH624SbDaOUShoYWjeKjFhgimZwNrrhizWheYnm4veKliVQ58i0g+aiHYmV5sInKJuotPkRHB8qU3sqVdHj0YBoNZBhtWswaGPXr8apW7qgiogYYXEu6YcVRtC+M+1oMq/SuE6wfOltlXJvzEO2qqbnLhClJb9diOHiNL7TdCbOHEzuXPWqckSvov2UDNmODAHpaof0sn6we7GzK/ZCt2b4InMhLdcEBoQzPbHAttApvZcS+qTpVWOqI0AkDxJQ==", "From": "Shenwei Wang <shenwei.wang@nxp.com>", "To": "Linus Walleij <linusw@kernel.org>,\n\tBartosz Golaszewski <brgl@kernel.org>,\n\tJonathan Corbet <corbet@lwn.net>,\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\tFrank Li <Frank.Li@nxp.com>,\n\tSascha Hauer <s.hauer@pengutronix.de>", "Cc": "Shuah Khan <skhan@linuxfoundation.org>,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-doc@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tPengutronix 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\tdevicetree@vger.kernel.org,\n\tlinux-remoteproc@vger.kernel.org,\n\timx@lists.linux.dev,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-imx@nxp.com,\n\tarnaud.pouliquen@foss.st.com", "Subject": "[PATCH v8 0/4] Enable Remote GPIO over RPMSG on i.MX Platform", "Date": "Thu, 12 Feb 2026 15:36:52 -0600", "Message-ID": "<20260212213656.662437-1-shenwei.wang@nxp.com>", "X-Mailer": "git-send-email 2.43.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "PH7PR17CA0040.namprd17.prod.outlook.com\n (2603:10b6:510:323::26) To PAXPR04MB9185.eurprd04.prod.outlook.com\n (2603:10a6:102:231::11)", "Precedence": "bulk", 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", "X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 98642628-7c66-450a-c7da-08de6a7ef6dc", "X-MS-Exchange-CrossTenant-AuthSource": "PAXPR04MB9185.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "12 Feb 2026 21:37:47.5689\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 /CARB7P/PrgQBLYUqk0SuvPIVHG+3JDTxDFHGyQI+LttK0ll3vt7Yyc+y16ucDvuJhfNfz6SJtOMr/pbCaVklQ==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PA4PR04MB7936" }, "content": "Support the remote devices on the remote processor via the RPMSG bus on\ni.MX platform.\n\nChanges in v8:\n - Add \"depends on REMOTEPROC\" in Kconfig to fix the build error reported\n by the kernel test robot.\n - Move the .rst patch before the .yaml patch.\n - Handle the \"ngpios\" DT property based on Andrew's feedback.\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 docs: driver-api: gpio: rpmsg gpio driver over rpmsg bus\n dt-bindings: remoteproc: imx_rproc: Add \"rpmsg\" subnode support\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 | 25 +\n drivers/gpio/Kconfig | 17 +\n drivers/gpio/Makefile | 1 +\n drivers/gpio/gpio-rpmsg.c | 588 ++++++++++++++++++\n 8 files changed, 976 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" }