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{ "id": 2215577, "url": "http://patchwork.ozlabs.org/api/covers/2215577/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/cover/20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.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": "<20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.com>", "list_archive_url": null, "date": "2026-03-24T19:24:26", "name": "[v4,0/5] Add support for AAEON SRG-IMX8P MCU", "submitter": { "id": 82054, "url": "http://patchwork.ozlabs.org/api/people/82054/?format=api", "name": "Thomas Perrot (Schneider Electric)", "email": "thomas.perrot@bootlin.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/cover/20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.com/mbox/", "series": [ { "id": 497335, "url": "http://patchwork.ozlabs.org/api/series/497335/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=497335", "date": "2026-03-24T19:24:29", "name": "Add support for AAEON SRG-IMX8P MCU", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/497335/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2215577/comments/", "headers": { "Return-Path": "\n <linux-gpio+bounces-34100-incoming=patchwork.ozlabs.org@vger.kernel.org>", "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=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=iXy0A9LG;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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c=relaxed/relaxed; d=bootlin.com; s=dkim;\n\tt=1774380285; h=from:subject:date:message-id:to:cc:mime-version:content-type:\n\t content-transfer-encoding; bh=gfEUwg5jTNsfejQ492YbCXPwCaOXKFYcNuGiUftCfZQ=;\n\tb=iXy0A9LGLz5xvwYoPPdbB0AKGn2j8e2cRCHOidsZHWLo7uubeHbKQhhr6zkQ/YVb3xSeql\n\tNoF1CxBAaMeCghlOP2/C5ayTOk6qAC+7FDlBRzvdAeoVfeQTfbLJ117hzgtuCH3LJAr5DN\n\toNgzUgwEcVJxhTt9TpkPJ+nTt00Xt8tq1Rlbu07y3jN+K9IepMYhzIAdTgNqonwE7RwMOP\n\to60y7rcC7+UiQHK0b5rSF+LQpp9Ht0B47JbgUTtnkensCO0tOt4sQXfAF0/7SFmtVJaEd+\n\tOBh5GD2irzKO/Hd/sGIspIYmC0YM7o3wYNcpehJCN1XfwMqfno2PM1nVlgzu5A==", "From": "\"Thomas Perrot (Schneider Electric)\" <thomas.perrot@bootlin.com>", "Subject": "[PATCH v4 0/5] Add support for AAEON SRG-IMX8P MCU", "Date": "Tue, 24 Mar 2026 20:24:26 +0100", "Message-Id": "<20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.com>", "Precedence": "bulk", "X-Mailing-List": "linux-gpio@vger.kernel.org", "List-Id": "<linux-gpio.vger.kernel.org>", "List-Subscribe": "<mailto:linux-gpio+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-gpio+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "X-B4-Tracking": "v=1; b=H4sIAAAAAAAC/4XO0U7DMAwF0F+Z8oyR7aRl5Yn/mHiIU4dFYg1KR\n zQ09d9JJxCaEOPxWvK592xmLUln87g5m6I1zSlPLbi7jQl7P70opLFlw8gdMRGMWkEceK95gkN\n 4h7GkqgUUdTuoROejmPb9VjSm00XePbe8T/Mxl49LUaX1+r9ZCRC6QaIn8cFG+yQ5H1/TdB/yY\n S35Evi20MvYdxK2GomvhHVX5e8tPRLbvyVu0hBdQJQoXZDfkv2RGG9ItknoaXCW8aH34VpaluU\n TZwk5MJYBAAA=", "X-Change-ID": "20251211-dev-b4-aaeon-mcu-driver-e0e89ebf4afb", "To": "Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>, Linus Walleij <linusw@kernel.org>,\n Bartosz Golaszewski <brgl@kernel.org>, Shawn Guo <shawnguo@kernel.org>,\n Sascha Hauer <s.hauer@pengutronix.de>,\n Pengutronix Kernel Team <kernel@pengutronix.de>,\n Fabio Estevam <festevam@gmail.com>,\n =?utf-8?b?SsOpcsOpbWllIERhdXRoZXJpYmVz?= <jeremie.dautheribes@bootlin.com>,\n Wim Van Sebroeck <wim@linux-watchdog.org>,\n Guenter Roeck <linux@roeck-us.net>, Lee Jones <lee@kernel.org>", "Cc": "devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-gpio@vger.kernel.org, imx@lists.linux.dev,\n linux-arm-kernel@lists.infradead.org, linux-watchdog@vger.kernel.org,\n Thomas Petazzoni <thomas.petazzoni@bootlin.com>,\n Miquel Raynal <miquel.raynal@bootlin.com>,\n \"Thomas Perrot (Schneider Electric)\" <thomas.perrot@bootlin.com>,\n Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>,\n Conor Dooley <conor.dooley@microchip.com>,\n Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=3683;\n i=thomas.perrot@bootlin.com; h=from:subject:message-id;\n bh=2VCYMI2PHE4zLToU2mchgb7NRWmDqF/2sfPT06wNeL4=;\n b=owEB7QES/pANAwAKAZ/ACwVx/grtAcsmYgBpwuT2VeFL8YG55yMXDAMVyI86ap8Mh8+7vuRIf\n EGa+mlK8s6JAbMEAAEKAB0WIQSHQHfGpqMKIwOoEiGfwAsFcf4K7QUCacLk9gAKCRCfwAsFcf4K\n 7fAeDACeAUdO4HdQaqlnv7sKMnjnltBHrv/8P1HOJzhWfjkeaYZUhI0CPaBfQ1TpV3lTeUzGk20\n 9WLFDz0fbq+J1lBYU20YBbZvrXgAobIpBPgqb0FA8KNre6GVIJ4Gm3f972S8XW1n6idM86UlNiz\n Tq1i0aIG8JXopIcn6Kmdqzh4DxnPLu2Lpuimvm6QtXKZ+GRw+Ua57h3LTyUSkSwUx7p3YF49pxh\n gratYEYKINDvWh5zBYuTwuGk2ke5OAbkVdLpT7fHrX1r8GbnPMSoPoAyvxZ5JI9Xz4LgUSOlflL\n ByzGtx7MNxCriQ4uoLgbAPubjqTlbcJTBlaEQRn7Uv7PYMe6gy/vEKtLac4j6diRO8MbKN5Kf65\n AQ2qKzYdvS3ks7JvI6nDmha5UT1R9uWAd/dZLn9WKje0zXJTQrQ4cTrJm6faU4OTfKmn/4++Dwj\n aQk0QPImIexKuOkkECf0jgo3k34VglwMdz4ogOAjXNClj1dtZanHD6AcD5VsiK9h5qr6c=", "X-Developer-Key": "i=thomas.perrot@bootlin.com; a=openpgp;\n fpr=874077C6A6A30A2303A812219FC00B0571FE0AED", "X-Last-TLS-Session-Version": "TLSv1.3" }, "content": "This patch series introduces support for the AAEON SRG-IMX8P embedded\ncontroller (MCU). The MCU is connected via I2C and provides GPIO and\nwatchdog functionality for the SRG-IMX8P board.\n\nThe series includes:\n- Device tree binding for the MFD driver\n- MFD driver that serves as the core driver for the MCU\n- GPIO driver implementing the GPIO functionality\n- Watchdog driver for system monitoring\n- MAINTAINERS entry for the new drivers\n\nThe drivers follow the standard Linux kernel subsystem patterns, with\nthe MFD driver registering the sub-devices (GPIO and watchdog) which\nare then handled by their respective subsystem drivers.\n\nSigned-off-by: Thomas Perrot (Schneider Electric) <thomas.perrot@bootlin.com>\n---\nChanges in v4:\n- mfd: switch to a custom regmap bus; remove aaeon_mcu_i2c_xfer() and the aaeon_mcu_dev struct\n- mfd: locking delegated to regmap's built-in mutex; drop explicit mutex\n- mfd: remove firmware version reading at probe time\n- gpio, watchdog: use regmap_read()/regmap_write() via dev_get_regmap()\n- include: replace aaeon_mcu_i2c_xfer() declaration with AAEON_MCU_REG() macro\n- dt-bindings: remove unused label from example node\n- Link to v3: https://lore.kernel.org/r/20260203-dev-b4-aaeon-mcu-driver-v3-0-0a19432076ac@bootlin.com\n\nChanges in v3:\n- Renamed SRG-IMX8PL to SRG-IMX8P\n- dt-bindings: add gpio-controller properties as required\n- mfd: move struct aaeon_mcu_dev from header to .c file (private)\n- mfd: use guard(mutex) and devm_mutex_init() for cleanup\n- mfd: firmware version log changed to dev_dbg()\n- mfd: add select MFD_CORE to Kconfig\n- Kconfig: add || COMPILE_TEST to all three drivers\n- watchdog: add comments explaining hardware timeout and WDOG_HW_RUNNING\n- watchdog: remove unused platform_set_drvdata()\n- watchdog: add a function to query the status\n- Link to v2: https://lore.kernel.org/r/20260123-dev-b4-aaeon-mcu-driver-v2-0-9f4c00bfb5cb@bootlin.com\n\nChanges in v2:\n- Fold GPIO and watchdog bindings into MFD binding\n- Drop OF_GPIO dependency in GPIO Kconfig\n- Use __set_bit/__clear_bit/__assign_bit instead of atomic variants\n- Various driver cleanups and improvements\n- Link to v1: https://lore.kernel.org/r/20251212-dev-b4-aaeon-mcu-driver-v1-0-6bd65bc8ef12@bootlin.com\n\n---\nThomas Perrot (Schneider Electric) (5):\n dt-bindings: vendor-prefixes: Add AAEON vendor prefix\n dt-bindings: mfd: Add AAEON embedded controller\n mfd: aaeon: Add SRG-IMX8P MCU driver\n gpio: aaeon: Add GPIO driver for SRG-IMX8P MCU\n watchdog: aaeon: Add watchdog driver for SRG-IMX8P MCU\n\n .../bindings/mfd/aaeon,srg-imx8p-mcu.yaml | 67 +++++++\n .../devicetree/bindings/vendor-prefixes.yaml | 2 +\n MAINTAINERS | 10 +\n drivers/gpio/Kconfig | 10 +\n drivers/gpio/Makefile | 1 +\n drivers/gpio/gpio-aaeon-mcu.c | 221 +++++++++++++++++++++\n drivers/mfd/Kconfig | 10 +\n drivers/mfd/Makefile | 1 +\n drivers/mfd/aaeon-mcu.c | 155 +++++++++++++++\n drivers/watchdog/Kconfig | 10 +\n drivers/watchdog/Makefile | 1 +\n drivers/watchdog/aaeon_mcu_wdt.c | 134 +++++++++++++\n include/linux/mfd/aaeon-mcu.h | 20 ++\n 13 files changed, 642 insertions(+)\n---\nbase-commit: d358e5254674b70f34c847715ca509e46eb81e6f\nchange-id: 20251211-dev-b4-aaeon-mcu-driver-e0e89ebf4afb\n\nBest regards," }