From nobody Sat Feb 7 10:15:56 2026 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (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 9B0C237AA9C; Fri, 23 Jan 2026 09:54:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769162112; cv=none; b=px3JNAApSptUq6AUxFmanna++u5rWnyM1qFu9XZIiDNn2XzeYan7PgRw31NjTKMebrO8B3LHuaFVodSwq8JNaZtDA8Us6Ao4k7972PGNVAe9Sc67fvlgRJnQJb+CBnG04S/rIYZR6TQRIiVDGpXl4i4lkNC9/YhNcCyH6VGbLJ4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769162112; c=relaxed/simple; bh=bu/rGz3MhaajWznLgOEciCHSKUCgeTXMKmrL1OPdgkM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=EWV72zETN5AGNcqzdNfCI7dqWLeW2q6RXFVfNg0QVVkFxEEPsSDkXmlpe4mv/FF7CNkmo1vJOk2Jou0jNppgniOh0p5Hupbl9CV337fn3S/iSTO5bnz2Id6AoMGuWhGkR1Fpmg4kFoZCLmEzvu9lhyrl3nQwDHgjfmlMGRA6aXs= 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=yEuuZRr3; arc=none smtp.client-ip=185.246.84.56 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="yEuuZRr3" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 333261A2B17; Fri, 23 Jan 2026 09:54:54 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 083466070A; Fri, 23 Jan 2026 09:54:54 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id C4BFE119A87A4; Fri, 23 Jan 2026 10:54:50 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1769162092; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=iQsPBKPunW2HAhagUIukzpmsZpN0tQ18iuvsF7KTtx8=; b=yEuuZRr39/8EWTov4sVs8lOn0NUO/Reqlv/1PGRpEc47bOWY4VYLEEh8i1yvuuQBIa2HFV tVLZp++x/PJMXgnfw7zLq7qch3Z5dQUL56S4tzCFNUJQRXrU3gn/mTSZjFk0zRSjjxCpTF UKdjvNm/AfSCu0HxPR2qXJjLEW0o8Og21gowc1H6DVy1zFWMl6tUM+DREW7k6EsML7hhRd 7rgjnfoPW5c2qHWRNq9B1SfymAA08l6I1MWQDtWyfCQjArcIIWhvaFrzqqtDbElAtv5MSQ qWgvATi01qFI+vrRrRybPmxp405YxLgy7zxpUKg8Y0Qn+rbZi/mjJgNWDhJtZw== From: "Thomas Perrot (Schneider Electric)" Date: Fri, 23 Jan 2026 10:54:31 +0100 Subject: [PATCH v2 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: <20260123-dev-b4-aaeon-mcu-driver-v2-2-9f4c00bfb5cb@bootlin.com> References: <20260123-dev-b4-aaeon-mcu-driver-v2-0-9f4c00bfb5cb@bootlin.com> In-Reply-To: <20260123-dev-b4-aaeon-mcu-driver-v2-0-9f4c00bfb5cb@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=3095; i=thomas.perrot@bootlin.com; h=from:subject:message-id; bh=bu/rGz3MhaajWznLgOEciCHSKUCgeTXMKmrL1OPdgkM=; b=owEB7QES/pANAwAKAZ/ACwVx/grtAcsmYgBpc0Vjlnpb1Zj8yHgaB44y8Q4HE8ao3GhllBMVd 88O+M5Lbl+JAbMEAAEKAB0WIQSHQHfGpqMKIwOoEiGfwAsFcf4K7QUCaXNFYwAKCRCfwAsFcf4K 7azDC/9O03mPqnCCNglsW3Cm342CIzwwud7A2DLA2beGLvhCH4Mr4oT70Lb5OxRHBEHtoV8o5oU ToHutcb5gkXjcX4eRHnhcVaO5+CmqGfr1ZR6k4ZgYDANmOwzde4pA0PgeJBNoncZaz1O/pG6n+J 0FLmbfF6u0TAxE5CUgs6F0ugYRS6Cc1g/VIKcdszyKx9KQgYp0jc3UpgllLjfODxq/C1vCUq3UO 63I7wXO9L3scytojLvx+H6kNsiJjM3qMnWDNZ8YxRcgEYpbyIORAgCPkAEliwvSFcQzqt514g+h ypSxh3FCZ2T0EyOfIer0zFzsVQNq9YJYHBSUW4zTxObwzOLPuueKNZ5TQ9zSMsPfyPEBaD5QGUt D6mD7JMmbZ1PfZAjCZLaC5pnQc3kCz8UEgBjEloi1VqZkJwMhb8wTGCcX6vgnReGLLaa6cs1vJc U/14k//mM/pJAaxxh9nCyX++YUKHlinQmx8SZEE3okssc31UoqWIAd40DaoGyaLMqLGUc= 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) --- .../bindings/mfd/aaeon,srg-imx8pl-mcu.yaml | 56 ++++++++++++++++++= ++++ MAINTAINERS | 6 +++ 2 files changed, 62 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8pl-mcu.yam= l b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8pl-mcu.yaml new file mode 100644 index 0000000000000000000000000000000000000000..b8eb5bf88853b6eb3d31841e1f6= d6acd4b776bd4 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/aaeon,srg-imx8pl-mcu.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/aaeon,srg-imx8pl-mcu.yaml# +$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-imx8pl-mcu + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + aaeon_mcu: embedded-controller@62 { + compatible =3D "aaeon,srg-imx8pl-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..10f7d5b183795376b3fcdedc9c3= 835eecb9d0a3b 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-IMX8PL CONTROLLER MFD DRIVER +M: Thomas Perrot +R: J=C3=A9r=C3=A9mie Dautheribes +S: Maintained +F: Documentation/devicetree/bindings/mfd/aaeon,srg-imx8pl-mcu.yaml + AAEON UPBOARD FPGA MFD DRIVER M: Thomas Richard S: Maintained --=20 2.52.0