From nobody Mon Feb 9 09:32:49 2026 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 047343C1992 for ; Tue, 3 Feb 2026 16:21:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770135702; cv=none; b=shCes0TEzUG+7u/MUqlAmnTFQ0fjJ2+voJlLuNzgsGc9U+srilOErzYeyXPUE+KYSdBm3NI4OEwLuogkEc7uvC945M/llzdWf5NnCycApkIhlvilxG6ZTFyoSrPJzvlGdw9qNep/NaaLSKEqFTnUp8ktPnkBvHlx5k2QutX9Bss= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770135702; c=relaxed/simple; bh=4Dhsmu7xEnUrLuIeetswX3iSlvyg+tPOldHEohviWxU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fCzojei4GaZ0G/Zsh8RFi0H+LGLS/ut56UGkFzyrSTws7ryzdfTQyzR60M8cle2kUsdfGDxfy6f+ZZlXYHyvtkfhOzDvpYkyctPu5S2ekOPPnRB96YrGKn1EanxxXV0jh3rnWk8jPKtVmNwL8WwF4HUdGsvv5oCYtOQ/9Girb2E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=dX9kiVdq; arc=none smtp.client-ip=185.171.202.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="dX9kiVdq" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id 6C1F2C24384; Tue, 3 Feb 2026 16:21:44 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 2656B60728; Tue, 3 Feb 2026 16:21:39 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 7D7D2119A8891; Tue, 3 Feb 2026 17:21:35 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1770135697; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=Vx0inxEGPD8evkjWNjlTSWCY3thhzOffsgPlVfuEcmY=; b=dX9kiVdq+aWLvUkx8fsE/7T41jWA6qO4t/sAbyz/1IlZrLeLIMMrgGiWCoTLSdr1wLYwiC HRIBT+6PQ+2RZY7kB3irZ9mWpkK0iuOkfXvNc/hmoXHfC8RE5bJdfer467GOMDl3tPqeol C/iMU4/ieqU7bfukipsZdTiN1BsnifsbZt+/8uRkIsOExlQM6RNwchG1SFcKMAZBBTqDtR rdyOsvj9N5Mxi2dSk3pIBzrTBftO1Wt+l02hGSrRAUaVfNnkB54Uo50V5Df9tE4kjYqyHt EnU9Kw6xJxtvLNKI63fq/g+x7qEH0YpmSV6L/+4vSYAl6kwjRYNQ6CNZYtB8BQ== From: "Thomas Perrot (Schneider Electric)" Date: Tue, 03 Feb 2026 17:21:11 +0100 Subject: [PATCH v3 2/5] dt-bindings: mfd: Add AAEON embedded controller Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260203-dev-b4-aaeon-mcu-driver-v3-2-0a19432076ac@bootlin.com> References: <20260203-dev-b4-aaeon-mcu-driver-v3-0-0a19432076ac@bootlin.com> In-Reply-To: <20260203-dev-b4-aaeon-mcu-driver-v3-0-0a19432076ac@bootlin.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij , Bartosz Golaszewski , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , =?utf-8?q?J=C3=A9r=C3=A9mie_Dautheribes?= , Wim Van Sebroeck , Guenter Roeck , Lee Jones Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-watchdog@vger.kernel.org, Thomas Petazzoni , "Thomas Perrot (Schneider Electric)" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3255; i=thomas.perrot@bootlin.com; h=from:subject:message-id; bh=4Dhsmu7xEnUrLuIeetswX3iSlvyg+tPOldHEohviWxU=; b=owEB7QES/pANAwAKAZ/ACwVx/grtAcsmYgBpgiCHuU96qMmkkM2ryyA5eim68NuG1vTDtsyPA CykoJA7A9SJAbMEAAEKAB0WIQSHQHfGpqMKIwOoEiGfwAsFcf4K7QUCaYIghwAKCRCfwAsFcf4K 7R62DACHedEiSyd51nB0oZMnPYj5HO2Pw9FcbvDWWM7h/WVHYFumX3VzAZxWe8GuFRGpi4wobjQ 6ULdMR+OeRVfUTZIfq8XB8WWwxvhQjXnBBPoQcsI7BepxrzY4HUonXil7CrvrexvDS8+ofnsDTC iCAoYl9FfVnLXxt4XyGkfU6wd+DjoUXLbbIgn0Fojs5wVJ0AjzPg1oiL+Ica9yFBixsJczVyesi kR++WMZDXMvahw7rs9vpReiqONC0ojRaYuICzdRlG5S0PAPM01gXB24ZHlvQud1w2FjDx0cYHYn N7r9jOjd+pWsdEyO9znNuGNpnrFbkk0URAOu0MjHirXyS1h7tLHdHirkjWzCLddfzM4k3q8YICH Wi7AsQ9nyS8iZlnf0dl+Gv+GmOh4gVi7TlOm6Mpghh602sv7IyKBcMFJci5C78a3y5ZQt9gwxhy dvvtShqYwAK1l66FRWAhC1Rlsflq4BhXdh2Ckv48xYXj6q5c3zImtrXHhw/GZvcFz49Bg= X-Developer-Key: i=thomas.perrot@bootlin.com; a=openpgp; fpr=874077C6A6A30A2303A812219FC00B0571FE0AED X-Last-TLS-Session-Version: TLSv1.3 Add device tree binding documentation for the AAEON embedded controller (MCU). This microcontroller is found on AAEON embedded boards, it is connected via I2C and and provides a GPIO control and watchdog timer. Signed-off-by: Thomas Perrot (Schneider Electric) Reviewed-by: Conor Dooley --- .../bindings/mfd/aaeon,srg-imx8p-mcu.yaml | 67 ++++++++++++++++++= ++++ MAINTAINERS | 6 ++ 2 files changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml= b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml new file mode 100644 index 0000000000000000000000000000000000000000..9d109fb0d53cb2a859f5a908a35= 611394eb87807 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/aaeon,srg-imx8p-mcu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AAEON Embedded Controller + +maintainers: + - J=C3=A9r=C3=A9mie Dautheribes + - Thomas Perrot + +description: + AAEON embeds a microcontroller on Standard RISC Gateway with ARM i.MX8M = Plus + Quad-Core boards providing GPIO control and watchdog timer. + + This MCU is connected via I2C bus. + + Its GPIO controller provides 7 GPOs and 12 GPIOs. + + Its watchdog has a fixed maximum hardware heartbeat of 25 seconds and su= pports + a timeout of 240 seconds through automatic pinging. + The timeout is not programmable and cannot be changed via device tree pr= operties. + +properties: + compatible: + const: aaeon,srg-imx8p-mcu + + reg: + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 2 + + gpio-line-names: + minItems: 1 + maxItems: 19 + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + aaeon_mcu: embedded-controller@62 { + compatible =3D "aaeon,srg-imx8p-mcu"; + reg =3D <0x62>; + + gpio-controller; + #gpio-cells =3D <2>; + gpio-line-names =3D "gpo-1", "gpo-2", "gpo-3", "gpo-4", + "gpo-5", "gpo-6", "gpo-7", + "gpio-1", "gpio-2", "gpio-3", "gpio-4", + "gpio-5", "gpio-6", "gpio-7", "gpio-8", + "gpio-9", "gpio-10", "gpio-11", "gpio-12"; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index c9e416ba74c64e90629c0b7d7941f879c9ac589e..ea9d55f76f3509c7f6ba6d1bc86= ca2e2e71aa954 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -186,6 +186,12 @@ W: http://www.adaptec.com/ F: Documentation/scsi/aacraid.rst F: drivers/scsi/aacraid/ =20 +AAEON SRG-IMX8P CONTROLLER MFD DRIVER +M: Thomas Perrot +R: J=C3=A9r=C3=A9mie Dautheribes +S: Maintained +F: Documentation/devicetree/bindings/mfd/aaeon,srg-imx8p-mcu.yaml + AAEON UPBOARD FPGA MFD DRIVER M: Thomas Richard S: Maintained --=20 2.52.0