{"id":2226902,"url":"http://patchwork.ozlabs.org/api/covers/2226902/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/cover/20260422212849.1240591-1-shenwei.wang@nxp.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/projects/42/?format=json","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":"<20260422212849.1240591-1-shenwei.wang@nxp.com>","list_archive_url":null,"date":"2026-04-22T21:28:45","name":"[v13,0/4] Enable Remote GPIO over RPMSG on i.MX Platform","submitter":{"id":74153,"url":"http://patchwork.ozlabs.org/api/people/74153/?format=json","name":"Shenwei Wang","email":"shenwei.wang@nxp.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/cover/20260422212849.1240591-1-shenwei.wang@nxp.com/mbox/","series":[{"id":501113,"url":"http://patchwork.ozlabs.org/api/series/501113/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=501113","date":"2026-04-22T21:28:45","name":"Enable Remote GPIO over RPMSG on i.MX Platform","version":13,"mbox":"http://patchwork.ozlabs.org/series/501113/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2226902/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256\n header.s=selector1 header.b=lu94MRNK;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) 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b=lu94MRNKvi14X6qESxxmvhyf5hBNLOV9JXZwsgSgfSt0vZeanh3vL4b6vzQcgFbgaVQL7rvND583RUAXFUfLHyOt+A30MVuHHlgA6YMVCoRSfXlY5BLqjNhOgSQ2GkKLPU3Uc/peeNcrMMXlbASmAy9e+pSXjotc5BAQB92yLdPtpIXmoe+juuHYNgON953ckn3+BEz8zct0wygvNQ469pcefdzeUOZtKFAg0fbRq6IhYwCv6bYM+WbFCIQaKDg1S3QxGLrkjIeggUhyz6JbF0dGR6zhtQ2PYA0UBBW0YWBlwnkRIitCvyhbiAi5br2LLL1wvhhPOj2NfEpVmjB6Sg==","From":"Shenwei Wang ","To":"Linus Walleij ,\n\tBartosz Golaszewski ,\n\tJonathan Corbet ,\n\tRob Herring ,\n\tKrzysztof Kozlowski ,\n\tConor Dooley ,\n\tBjorn Andersson ,\n\tMathieu Poirier ,\n\tFrank Li ,\n\tSascha Hauer ","Cc":"Shuah Khan ,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-doc@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tPengutronix Kernel Team ,\n\tFabio Estevam ,\n\tShenwei Wang ,\n\tPeng Fan ,\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","Subject":"[PATCH v13 0/4] Enable Remote GPIO over RPMSG on i.MX 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7jqZcojUuK0BJEtbQgivfZZ+HbdXp7ByYmSaj6/5Xp0CIimGOAiSYtWIsxxcm9+BzBasVtqEnejS3SzUnapnL7s4GahL8q5k5WbCd1VMmqnDCA7FBMRNZjQmhAnJtJ5ASblTjwHu/n75zJDw2UcxcNKBrGp779k5fTn0KSn+sOtj9hR+yNsG5rkwQaknlJF3SgyaSmGl1nOE0bMlty8NntYPn9HqFrvHsueLO5G+tYBw41Xg5bQKtU9zkqFHHQdTOWggFW00Jf8vyravvLSAx9ypZ4d5LOOeTovP22i28/797pKlygef2DD2aJnIDB4un9RDsQr+vjGnKsLr3f286p540ldye8wjwbuWUvKTVE8wltMa6qUOlE9kDBldHRJxHRAddJNAZNtLOI+6wzfcD73j97tToaYSRwDOaKQisSV9kAqt5f43Tx4T7mwDeYtumcXKsuIYB1+RCwzI25eP5yYVrvN5oxEmVPHfIie+4RZ2V51/+2hRQQwfaU6xP8INTIeq92oSuPwCoym9zYiXxXjw+AVPwTW71KNvdmPwHlSLLOHd6mfzyKhWqYPaN7VoLEFBDzvddVZG4l5MUlqy76NxIfFxoKNjoJNh4HN9gENhDKMXU0Mj+BG9cARq7V2Ne+/osXSnluFNyrIgeBAO1Gghjj0zsRBSplULqGsIuWWg6IJOiNSWjKYp6YBVtpFsgy/ATLgBphX1FJFVwSF9aRr7RJwCh7sx8bJ8SNrQ5WP/684kCe9xXs9vCEB+oe7IbWfufzM0eLxj0+wrFkvrUyiZzVcY8jIVTSnrbHKLRxKu5NF0LHut0/HWltEuYJmnlT8U6Y1erCTSEHXhNm0F0ww+v4YQnkVeooWY/8Jkxpzdt4l35osIZ2a+VzPveYzYksLqpvW/6Kn4oxlkstVVuxhpSdUZHYQSMcA04kvMaOYcrXfdK81rcC5ql/C1qdYdYVEGvhxfiTLBedYukM7pMD2abyW/wjt2CoGGEAdoUAg9bTqE5iltEmXMtM+PE50RnBbipVA7YxbNVjtiVqKwuutzFeEBSX090Nf1zkxv+a5V/EEMa8QIBR/5wCehDgOmqazriMZ+qXFBOJO1eu0KFYZB+sWPp1R+z4Eu3ubVqanAMurmTO69OzHUpVR7EMegotwJxDzR2GzYdML8g5gSYHtdRKEfWDx62ftrGbUtxsqVLAggAt3tYhebDuYrgKfWxbxubOODdywIwKOH6d/rs1gshOlOQ2ipPH7ye4bAybPnQAVRSaRnt4znI6iwhHYc0voT0ZFhhT8B93/7CvuhDo40hmgOneM+4GQWSzBM+3+NKO3nQqAK/5MxaYLPaM4nwRd5A2KE+JTVMOLba9Pa0et7qkiSGAo24I8z0g3uH8yJpGPj7Dx2n+prEPhsLtttx6i4YMGlcnUWE2Ksgg5WzVO5pf5Xoj4x5MXfJe1L0EjMURYQOjsOZObjMPgPZYgLeY9QYjqjhro3no+6ZnTKCEJ2fzqjfmi6pY7fxlt/HCj4ibuhzYYJBaGSERqqtcbeGgPENQwmb1JJHVXIV2Maf9bEoOww/65xfIIn0aV+5gfLXdikpJreLQ/HLFQCYYSjEIZXCHHGKv9Pn223pej99JNKxOR6bBfzjObTVZXkP0ccfNNCaNR+IChFuKGSyXBBL3OmyzEhAgiViSWXYMZ6Ui1fx4BEWce6sFGpKPhdWO/3Dmt3HeuozfMMdQ2YKb2284imHEX5WWUWkq0WqSI09w==","X-OriginatorOrg":"nxp.com","X-MS-Exchange-CrossTenant-Network-Message-Id":"\n daf015e9-2e57-49fb-844b-08dea0b627fe","X-MS-Exchange-CrossTenant-AuthSource":"AS8PR04MB9176.eurprd04.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"22 Apr 2026 21:28:55.1791\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 N0cNQtttzVWhkeMNaKqJhpEpBwE1DIgc0/OEMvXCGdlRE2aI2fQ9nqMJWanPiSSZZnkhHKJdbCmn/GkpUjcqSw==","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"PR3PR04MB7449"},"content":"Support the remote devices on the remote processor via the RPMSG bus on\ni.MX platform.\n\nChanges in v13:\n - drop the support for legacy NXP firmware.\n - remove the fixed_up hooks from the rpmsg gpio driver.\n - code cleanup.\n\nChanges in v12:\n - Fixed the \"underline\" warning reported by Randy.\n\nChanges in v11:\n - Expand RPMSG for the first time per Shuah's review comment.\n\nChanges in v10:\n - Update gpio-rpmsg.rst according to Daniel Baluta's review comments.\n - Add a kernel CONFIG for fixed up handlers and only enable it on\n i.MX products.\n - Fixed bugs reported by kernel test robot.\n\nChanges in v9:\n - Reuse the gpio-virtio design for command and IRQ type definitions.\n - Remove msg_id, version, and vendor fields from the generic protocol.\n - Add fixed-up handlers to support legacy firmware.\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 | 266 ++++++++\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 | 573 ++++++++++++++++++\n 8 files changed, 991 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"}