{"id":2215578,"url":"http://patchwork.ozlabs.org/api/patches/2215578/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260324-dev-b4-aaeon-mcu-driver-v4-2-afb011df4794@bootlin.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":"<20260324-dev-b4-aaeon-mcu-driver-v4-2-afb011df4794@bootlin.com>","list_archive_url":null,"date":"2026-03-24T19:24:28","name":"[v4,2/5] dt-bindings: mfd: Add AAEON embedded controller","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"34b8b65b8af1ef62fd5b00d503d4805102c06901","submitter":{"id":82054,"url":"http://patchwork.ozlabs.org/api/people/82054/?format=json","name":"Thomas Perrot (Schneider Electric)","email":"thomas.perrot@bootlin.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260324-dev-b4-aaeon-mcu-driver-v4-2-afb011df4794@bootlin.com/mbox/","series":[{"id":497335,"url":"http://patchwork.ozlabs.org/api/series/497335/?format=json","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/patches/2215578/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2215578/checks/","tags":{},"related":[],"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=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=lpQw40np;\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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a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim;\n\tt=1774380290; h=from:subject:date:message-id:to:cc:mime-version:content-type:\n\t content-transfer-encoding:in-reply-to:references;\n\tbh=Itu45DKmsPB5+bFts834kAEPp0swPEbwWn1hCj9DneM=;\n\tb=lpQw40npMMscsn3vCvyrQlBbpb1hBjZSFwux9kT66/LsRWWHqpr0XcVNMkDFOvtmwYU0zH\n\tDG1Bj2HWATvDACsRW5C46v/rayxg+TxO3sSnm3W6rhz83ywVeip3P/Wi9C6vz0HlRve+7e\n\tOvPI21CEpsCha7Ww3NzGflH5j8rpRdSJ2REPI+LQ8lqUUJCsiZ2Az8e6jo6T7SJw7TEBa5\n\tP/uqg2Wotd0MtOBFdISQEQ3gQsmg2CiZG52QZjYWq2JYsx6bAHxaP+GWRA/gDCNoXHaWos\n\tQXu/V3+azb5tHqgnYN/Nmxj/9Q4NjpMGrmXb6cmKSQtxu5ggofQO6M1VCaaLHA==","From":"\"Thomas Perrot (Schneider Electric)\" ","Date":"Tue, 24 Mar 2026 20:24:28 +0100","Subject":"[PATCH v4 2/5] dt-bindings: mfd: Add AAEON embedded controller","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"8bit","Message-Id":"<20260324-dev-b4-aaeon-mcu-driver-v4-2-afb011df4794@bootlin.com>","References":"<20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.com>","In-Reply-To":"<20260324-dev-b4-aaeon-mcu-driver-v4-0-afb011df4794@bootlin.com>","To":"Rob Herring , Krzysztof Kozlowski ,\n Conor Dooley , Linus Walleij ,\n Bartosz Golaszewski , Shawn Guo ,\n Sascha Hauer ,\n Pengutronix Kernel Team ,\n Fabio Estevam ,\n =?utf-8?b?SsOpcsOpbWllIERhdXRoZXJpYmVz?= ,\n Wim Van Sebroeck ,\n Guenter Roeck , Lee Jones ","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 ,\n Miquel Raynal ,\n \"Thomas Perrot (Schneider Electric)\" ,\n Conor Dooley ","X-Mailer":"b4 0.14.2","X-Developer-Signature":"v=1; a=openpgp-sha256; l=3300;\n i=thomas.perrot@bootlin.com; h=from:subject:message-id;\n bh=4XZ/GuRMSAxFpp6yNg37Xy4r5DlcogaXd4BVSSY4Jtk=;\n b=owEB7QES/pANAwAKAZ/ACwVx/grtAcsmYgBpwuT26ZHgMy+LO0/qS7k6hZDVs65qpqulluV4i\n uDTcAOxZauJAbMEAAEKAB0WIQSHQHfGpqMKIwOoEiGfwAsFcf4K7QUCacLk9gAKCRCfwAsFcf4K\n 7WyzC/9XUeZ8SfJHrvqkj2PGtah72qGoDJH+pZ4GLNJxXxml9jr7LCOXdYu6rAUoCV0iVPA4EmA\n u0b9z/xLmuhP97B6DFnrS93XjoIXnQIfBni51l29ZlSRShOrlqywIGoEGfAH9alSIWXNe1kWytp\n IPvwjEXKwJcxdUngHEW9DYQ1fhqmCQ/s3XHvkTtBWEjd83Oh/6HeLSLn+Rlbbp/ATwGyvcyeATn\n kdCv01uADRwL8dIWhya/47ZWUsJH8EIQ+KXeFDOPUQyknJIjYZNpGvtp/ZJEag2RF8lE9iounxI\n 8QKeh2rMAUfgRMMzDX+toO7zKeQO4182V67IOCDcu/39mrPqcXK7ki00RUmo8yOhsIuDh8yxpVf\n vtZdgS6fegAPhMpgLZsPKtKakZJyFXt3kW2806XLtm2T93PyuiNVGu+S7C80EvVE0EW3s+1Cv2V\n vl9jPdVLR4srKMb7Sup6uIJxJt/hO2dtiHzTSeAjyW2WDUBWYdwgxmSW+cBdCAxey45U4=","X-Developer-Key":"i=thomas.perrot@bootlin.com; a=openpgp;\n fpr=874077C6A6A30A2303A812219FC00B0571FE0AED","X-Last-TLS-Session-Version":"TLSv1.3"},"content":"Add device tree binding documentation for the AAEON embedded controller\n(MCU). This microcontroller is found on AAEON embedded boards, it is\nconnected via I2C and and provides a GPIO control and watchdog timer.\n\nReviewed-by: Conor Dooley \nSigned-off-by: Thomas Perrot (Schneider Electric) \n---\n .../bindings/mfd/aaeon,srg-imx8p-mcu.yaml | 67 ++++++++++++++++++++++\n MAINTAINERS | 6 ++\n 2 files changed, 73 insertions(+)","diff":"diff --git a/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml\nnew file mode 100644\nindex 0000000000000000000000000000000000000000..4895028e72eb3ac2376b61ed9c06549b42da66d3\n--- /dev/null\n+++ b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml\n@@ -0,0 +1,67 @@\n+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)\n+%YAML 1.2\n+---\n+$id: http://devicetree.org/schemas/mfd/aaeon,srg-imx8p-mcu.yaml#\n+$schema: http://devicetree.org/meta-schemas/core.yaml#\n+\n+title: AAEON Embedded Controller\n+\n+maintainers:\n+ - Jérémie Dautheribes \n+ - Thomas Perrot \n+\n+description:\n+ AAEON embeds a microcontroller on Standard RISC Gateway with ARM i.MX8M Plus\n+ Quad-Core boards providing GPIO control and watchdog timer.\n+\n+ This MCU is connected via I2C bus.\n+\n+ Its GPIO controller provides 7 GPOs and 12 GPIOs.\n+\n+ Its watchdog has a fixed maximum hardware heartbeat of 25 seconds and supports\n+ a timeout of 240 seconds through automatic pinging.\n+ The timeout is not programmable and cannot be changed via device tree properties.\n+\n+properties:\n+ compatible:\n+ const: aaeon,srg-imx8p-mcu\n+\n+ reg:\n+ maxItems: 1\n+\n+ gpio-controller: true\n+\n+ \"#gpio-cells\":\n+ const: 2\n+\n+ gpio-line-names:\n+ minItems: 1\n+ maxItems: 19\n+\n+required:\n+ - compatible\n+ - reg\n+ - gpio-controller\n+ - \"#gpio-cells\"\n+\n+additionalProperties: false\n+\n+examples:\n+ - |\n+ i2c {\n+ #address-cells = <1>;\n+ #size-cells = <0>;\n+\n+ embedded-controller@62 {\n+ compatible = \"aaeon,srg-imx8p-mcu\";\n+ reg = <0x62>;\n+\n+ gpio-controller;\n+ #gpio-cells = <2>;\n+ gpio-line-names = \"gpo-1\", \"gpo-2\", \"gpo-3\", \"gpo-4\",\n+ \"gpo-5\", \"gpo-6\", \"gpo-7\",\n+ \"gpio-1\", \"gpio-2\", \"gpio-3\", \"gpio-4\",\n+ \"gpio-5\", \"gpio-6\", \"gpio-7\", \"gpio-8\",\n+ \"gpio-9\", \"gpio-10\", \"gpio-11\", \"gpio-12\";\n+ };\n+ };\ndiff --git a/MAINTAINERS b/MAINTAINERS\nindex c9e416ba74c64e90629c0b7d7941f879c9ac589e..ea9d55f76f3509c7f6ba6d1bc86ca2e2e71aa954 100644\n--- a/MAINTAINERS\n+++ b/MAINTAINERS\n@@ -186,6 +186,12 @@ W:\thttp://www.adaptec.com/\n F:\tDocumentation/scsi/aacraid.rst\n F:\tdrivers/scsi/aacraid/\n \n+AAEON SRG-IMX8P CONTROLLER MFD DRIVER\n+M:\tThomas Perrot \n+R:\tJérémie Dautheribes \n+S:\tMaintained\n+F:\tDocumentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml\n+\n AAEON UPBOARD FPGA MFD DRIVER\n M:\tThomas Richard \n S:\tMaintained\n","prefixes":["v4","2/5"]}