From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3F6753C3439; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; cv=none; b=Klq5inPgZcsgNASkGhIozuW/hOFveTk+7j2UkDIWHV4mMeCM8/YQi1qmYhTO6e9x4FOY92m0n+UAwr5QHvQP31qoedhWdVvzO9dQN9lwBuz/F0FMoL5itxXqAUZPegvxwzx2cbR0RSSDOknFPHe0M2f4DLG9Znu1H6pAbmKiDJE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; c=relaxed/simple; bh=KQ2jlEW1eOaS76algkR9vPolQCqOkVsbm0MXBmfkdXw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GQKQDScxrdO6Di9VniKT5zK8tzY/TqyUT/hIptDeTD14u+gv5VrBNuV+UUmBAyWXcGMQUpZX6QpuSlpRGaZLbHGJYfNBrfKdMYqBej26h/FRUGNJLfkYBUkKouM7FDJWmfb6Kt150tEr/MkRr35o6k4yhBM1jN9JakLHhhyxzaE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HTFy1o7F; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HTFy1o7F" Received: by smtp.kernel.org (Postfix) with ESMTPS id E3B1FC2BCB5; Fri, 24 Apr 2026 14:20:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777040410; bh=KQ2jlEW1eOaS76algkR9vPolQCqOkVsbm0MXBmfkdXw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=HTFy1o7FdQbHOLrpzCrgUNMtug7Nt2QQKCgK+I9GRMzxa/P1lb+TmQH4rgQhwECwU rp/Oii1Tro3FD7iMD6TeJb8koh4wcmmIZlOrhcB5pakVm4QH2fPoIpWG7PJ0Eh6oHh CHJYmSYAo5puJ4KhtsryCWun3vOfV09eMF11blR5AOS95xJBC0oi/uX5sRv3v75KND 9QDMWa15oOhfvQLPcKw6M713gwQBpcY8G+G2Vzi8pvjaciXCYX54FJ4YPOYfMsq0V/ Ef/DdmmF0Ku8urqI6f5nioJSZj0mEKCi6RrlTjNu9fVDaA4Xd3R3v7IoheJjohfBRi ExsiJfZQwZCsg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id D196CFED3CC; Fri, 24 Apr 2026 14:20:09 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:32 +0200 Subject: [PATCH v5 1/8] dt-bindings: mfd: khadas: Add new compatible for Khadas VIM4 MCU 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: <20260424-add-mcu-fan-khadas-vim4-v5-1-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau , Conor Dooley X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1479; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=eCKy2chdqFWw8sHr2BRKBa6cnfiYWQdTnn103pMuJ+4=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGr6UkrenLluc+XxnU/vsnVp/+y9H+VvdfinYVDHHt l7g2I3mjlIWBjEuBlkxRZb+uZYn3l0+eubrHvUUmDmsTCBDGLg4BWAiIgcZ/rulnb75uzR6+sey fKNVfzKkPxT9lmx1+lh6YMbmyXq3JawZGZZdNI6auPBAigiTt13+PaGLizYsNTqxYvJSr57EnP8 qBnwA X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau The Khadas VIM4 MCU register is slightly different from previous boards' MCU. This board also features a switchable power source for its fan. Acked-by: Conor Dooley Signed-off-by: Ronald Claveau --- Documentation/devicetree/bindings/mfd/khadas,mcu.yaml | 18 +++++++++++++++= +++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml b/Docume= ntation/devicetree/bindings/mfd/khadas,mcu.yaml index 084960fd5a1fd..1f135618e3b6f 100644 --- a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml +++ b/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml @@ -18,6 +18,7 @@ properties: compatible: enum: - khadas,mcu # MCU revision is discoverable + - khadas,vim4-mcu # Different MCU variant, not discoverable =20 "#cooling-cells": # Only needed for boards having FAN control feature const: 2 @@ -25,10 +26,27 @@ properties: reg: maxItems: 1 =20 + fan-supply: + description: Phandle to the regulator that powers the fan. + $ref: /schemas/types.yaml#/definitions/phandle + required: - compatible - reg =20 +allOf: + - if: + properties: + compatible: + contains: + const: khadas,vim4-mcu + then: + required: + - fan-supply + else: + properties: + fan-supply: false + additionalProperties: false =20 examples: --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3F7103DBD5B; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; cv=none; b=AIQAZUEJla0LsQEwn7CgYFP+ZtrY2LbdR0JI44PfPhpTZM5VLnwKSMHDVccF+oLLSfGC5ivFi6I5DcJLHQ+HcHMmxdMhj8IsBCZh3OvEJRkNa7a1ALqekPpQp8LUMpvpnNKzqf45RipfKR2paAdPoZmLbX0d+SdxeMv8Rg2hok4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; c=relaxed/simple; bh=Jnv894IU9wblCqhm+wVe2Z5FBt6aG6TawzV3npnKdrc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=UPlnzb7cMt550t+0eFHAaeo8F+YVVgW4xz6bksxcbiuBQa8vrQLmJJTVYRZO4E4TuR6BpmQzBPU7SNjRi8LEwC2n7i4cVbVmRBpaXh5vosh+5rb8INfzxYGyWsaOmBiHA3TjzHvastw6x+QvxODfz1/X6CmkBbwdPHXQuVsHPjo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SbSWWEcM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SbSWWEcM" Received: by smtp.kernel.org (Postfix) with ESMTPS id F06B4C2BCB2; Fri, 24 Apr 2026 14:20:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777040410; bh=Jnv894IU9wblCqhm+wVe2Z5FBt6aG6TawzV3npnKdrc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=SbSWWEcMXjEbwaS2Ly1/PK1BsoBFbskPEY9to8Wbr7o+GYDWtcfbyESad7qrEayQW Flo/tDixKZ5fNdJsBKO+gS66ccBqPrMd2w3rgi3PprW+WYbUGSEamxumErjc5wBhvq 7yifpNydO8o5b16v+FFTpohEWbrjsK9SVmuTGVRMqiZ+J+M1CCPrYXpDQuBToKFVA6 nk7ejj1sbwSJN0bYucwFNefTgnSg9dZvrGoCUGiHQvoO+yKjlDDWl0qCckVf6g1o8c BUonxBVDtpSuIgl4hZSxTGC3ix1NB0XeMrYdoaP8ZTXy+6OD/d4/gMkDI3Sd9Q+B3a odYCtpau3oRWg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1DB6FED3D2; Fri, 24 Apr 2026 14:20:09 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:33 +0200 Subject: [PATCH v5 2/8] dt-bindings: i2c: amlogic: Add compatible for T7 SOC 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: <20260424-add-mcu-fan-khadas-vim4-v5-2-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1268; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=dSGVBP6Kwid380fHwj/yvIcbmVkBngDKwALA0QzKSyw=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGoGdSlG7WFi69z5L9pkep8JdEiHp4Ho1okKi5fDl3 m2WcyZ0lLIwiHExyIopsvTPtTzx7vLRM1/3qKfAzGFlAhnCwMUpABNxE2Rk2GG9cHn0OlmBB00X f82SdH7TJMGpqvn1+P0fyZrzDm37L8/w3zNy55HJZtU799/d8XiFpIllbn9Zw5VzZRdVTudKcXt 7MQEA X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Add the T7 SOC compatible which fallback to AXG compatible. Acked-by: Rob Herring (Arm) Signed-off-by: Ronald Claveau --- .../devicetree/bindings/i2c/amlogic,meson6-i2c.yaml | 13 +++++++++= ---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml = b/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml index c4cc8af182807..7b59b60b62e5b 100644 --- a/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml @@ -16,10 +16,15 @@ allOf: =20 properties: compatible: - enum: - - amlogic,meson6-i2c # Meson6, Meson8 and compatible SoCs - - amlogic,meson-gxbb-i2c # GXBB and compatible SoCs - - amlogic,meson-axg-i2c # AXG and compatible SoCs + oneOf: + - items: + - enum: + - amlogic,t7-i2c + - const: amlogic,meson-axg-i2c + - enum: + - amlogic,meson6-i2c # Meson6, Meson8 and compatible SoCs + - amlogic,meson-gxbb-i2c # GXBB and compatible SoCs + - amlogic,meson-axg-i2c # AXG and compatible SoCs =20 reg: maxItems: 1 --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 59F1532D0CF; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; cv=none; b=eu8aU2fM2zyTQqj9+Aed6f4dc+H05mkF+gcCs0kydR5Y5ylUCMT11wWCB4W+7zVg2Vgqn9PvOBzSTfMdM+Y1Rln95lDqcs3pbmSdxAX5Ti3kG44qlLHe3HibMcxKjdot/mRld5ZcSItl3wcNEbtCR6stdIZPhOYW5aptF8fHtAU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; c=relaxed/simple; bh=JIvHBkUoalBvVLwrlyOmEWngyDFdpxRN9ZxD0CWqxss=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=O8LB73tqvrCZmqLvmAOa//NFyQhY691SsTX+M/X/E0C7vMZ/oG1b2ftRF7vp/im5RC1Z6VDiQRcX91+9Ax3b+6XlDllWc0alxtoRnDN9zCbIy1UkEHf7XucPcA7FmQoG79IOaWq/YJihZCTN/8h4y3Hcsk6cKdgo+ECJ/l+d4Rc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tlUKD1pL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tlUKD1pL" Received: by smtp.kernel.org (Postfix) with ESMTPS id 0A05CC2BCB9; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777040410; bh=JIvHBkUoalBvVLwrlyOmEWngyDFdpxRN9ZxD0CWqxss=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=tlUKD1pLW3uwSDtalNBMSWWfN4Bq5fGjw7iXyVYfogdeupXcNpbOLgcYTMOMtMA6q BVx7wrPbB++ub6feIBIo2LjwggXRupgrC0f6cuWUR6HYsMGpW7soWe1debOJfSRCsg 6mz/0Qr7a/GGukpCafnnezkhJof4J8S0Idu2yNRB1yiY78kqcjUryXUfUWFdXw3UTr nZZx5cJPZ3NnJZ6zbqJU8vNmUXWI9dzzh7ZRiB83KBgCI1Ms0RKqft2U8n8Gg2/U0O yXHUacAzv6o5t5cb4/VLtrWd0aYisDKE0Qt7XeY8nB4vEN7rcSmPlCYU7Vqxrd1fYS kub748IY+Vx7w== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id F30DDFED3C9; Fri, 24 Apr 2026 14:20:09 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:34 +0200 Subject: [PATCH v5 3/8] mfd: khadas-mcu: Add per-variant configuration infrastructure and VIM4 support 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: <20260424-add-mcu-fan-khadas-vim4-v5-3-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2474; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=lbbZ527T237ZjHkvSfooMhj4xDf42xiFowYZHXz2AMk=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGkH5uqwwTSmFhBuzncuEQ3YGl8dPzp1mJdDt5q6Xe 0tuzfuOUhYGMS4GWTFFlv65lifeXT565use9RSYOaxMIEMYuDgFYCJPuRn+qUT4GXs8uH+EO/Ha 792Xpa0+ppms8FjVc/B1aOMiOZcEC4b/YWyM385UWWRpOznqre5237dJ5ocd//v1T5lLHu9WZD3 NAQA= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Introduce a per-variant configuration structure (khadas_mcu_data) holding the regmap config and MFD cells, selected at probe time via the of_device_id match data. This makes adding other variants straightforward. Also introduce khadas_mcu_fan_pdata to pass fan register address and maximum level to the fan sub-driver, removing the hardcoded constants. Reviewed-by: Neil Armstrong Signed-off-by: Ronald Claveau --- include/linux/mfd/khadas-mcu.h | 39 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) diff --git a/include/linux/mfd/khadas-mcu.h b/include/linux/mfd/khadas-mcu.h index a99ba2ed0e4e0..75e275d3fa8d9 100644 --- a/include/linux/mfd/khadas-mcu.h +++ b/include/linux/mfd/khadas-mcu.h @@ -70,6 +70,13 @@ #define KHADAS_MCU_WOL_INIT_START_REG 0x87 /* WO */ #define KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG 0x88 /* WO */ =20 +/* VIM4 specific registers */ +#define KHADAS_MCU_VIM4_REST_CONF_REG 0x2c /* WO - reset EEPROM */ +#define KHADAS_MCU_VIM4_LED_ON_RAM_REG 0x89 /* WO - LED volatile */ +#define KHADAS_MCU_VIM4_FAN_CTRL_REG 0x8a /* WO */ +#define KHADAS_MCU_VIM4_WDT_EN_REG 0x8b /* WO */ +#define KHADAS_MCU_VIM4_SYS_RST_REG 0x91 /* WO */ + enum { KHADAS_BOARD_VIM1 =3D 0x1, KHADAS_BOARD_VIM2, @@ -82,10 +89,38 @@ enum { * struct khadas_mcu - Khadas MCU structure * @device: device reference used for logs * @regmap: register map + * @data: pointer to variant-specific config */ struct khadas_mcu { - struct device *dev; - struct regmap *regmap; + struct device *dev; + struct regmap *regmap; + const struct khadas_mcu_data *data; +}; + +/** + * struct khadas_mcu_data - per-variant configuration + * @regmap_config: regmap configuration + * @cells: MFD sub-devices + * @ncells: number of sub-devices + * @fan_cells: MFD fan sub-devices + * @nfan_cells: number of fan sub-devices + */ +struct khadas_mcu_data { + const struct regmap_config *regmap_config; + const struct mfd_cell *cells; + int ncells; + const struct mfd_cell *fan_cells; + int nfan_cells; +}; + +/** + * struct khadas_mcu_fan_pdata - fan sub-driver configuration + * @fan_reg: register address to write the fan level + * @max_level: maximum fan level + */ +struct khadas_mcu_fan_pdata { + unsigned int fan_reg; + unsigned int max_level; }; =20 #endif /* MFD_KHADAS_MCU_H */ --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6CC6F3DC4C5; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260424-add-mcu-fan-khadas-vim4-v5-4-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=5119; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=6yBuoANmof/0UzpsxBYYuaeY9Bsvyi5B4REa1sHSYxE=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGiEGjlcJ5mcEFJzDdlhKphc+C99t+dgkbIdHi/vHF kaDjbc7SlkYxLgYZMUUWfrnWp54d/noma971FNg5rAygQ3h4hSAiXAkMPxiFi2euPrRJPupkeUm je/6JHjVVF9vzzv89oPR6SSdme1WjAwbHSvn6+nNNLwYGVtyQfq5GKdtvlvJVJcKLodUo+id1zg A X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Refactor probe() to use per-variant khadas_mcu_data instead of hardcoded globals. Add dedicated regmap configuration and device data for the VIM4 MCU, with its own volatile/writeable registers. Add the fan control register (0=E2=80=93100 levels vs 0=E2=80=933 for previous supported boards). Add a new compatible string "khadas,vim4-mcu". Reviewed-by: Neil Armstrong Signed-off-by: Ronald Claveau --- drivers/mfd/khadas-mcu.c | 106 ++++++++++++++++++++++++++++++++++++++++++-= ---- 1 file changed, 95 insertions(+), 11 deletions(-) diff --git a/drivers/mfd/khadas-mcu.c b/drivers/mfd/khadas-mcu.c index ba981a7886921..b36b3b3ab73c0 100644 --- a/drivers/mfd/khadas-mcu.c +++ b/drivers/mfd/khadas-mcu.c @@ -75,15 +75,91 @@ static const struct regmap_config khadas_mcu_regmap_con= fig =3D { .cache_type =3D REGCACHE_MAPLE, }; =20 +static const struct khadas_mcu_fan_pdata khadas_mcu_fan_pdata =3D { + .fan_reg =3D KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG, + .max_level =3D 3, +}; + static struct mfd_cell khadas_mcu_fan_cells[] =3D { /* VIM1/2 Rev13+ and VIM3 only */ - { .name =3D "khadas-mcu-fan-ctrl", }, + { + .name =3D "khadas-mcu-fan-ctrl", + .platform_data =3D &khadas_mcu_fan_pdata, + .pdata_size =3D sizeof(khadas_mcu_fan_pdata), + }, }; =20 static struct mfd_cell khadas_mcu_cells[] =3D { { .name =3D "khadas-mcu-user-mem", }, }; =20 +static const struct khadas_mcu_data khadas_mcu_data =3D { + .regmap_config =3D &khadas_mcu_regmap_config, + .cells =3D khadas_mcu_cells, + .ncells =3D ARRAY_SIZE(khadas_mcu_cells), + .fan_cells =3D khadas_mcu_fan_cells, + .nfan_cells =3D ARRAY_SIZE(khadas_mcu_fan_cells), +}; + +static bool khadas_mcu_vim4_reg_volatile(struct device *dev, unsigned int = reg) +{ + switch (reg) { + case KHADAS_MCU_PWR_OFF_CMD_REG: + case KHADAS_MCU_VIM4_REST_CONF_REG: + case KHADAS_MCU_WOL_INIT_START_REG: + case KHADAS_MCU_VIM4_LED_ON_RAM_REG: + case KHADAS_MCU_VIM4_FAN_CTRL_REG: + case KHADAS_MCU_VIM4_WDT_EN_REG: + case KHADAS_MCU_VIM4_SYS_RST_REG: + return true; + default: + return false; + } +} + +static bool khadas_mcu_vim4_reg_writeable(struct device *dev, unsigned int= reg) +{ + switch (reg) { + case KHADAS_MCU_VERSION_0_REG: + case KHADAS_MCU_VERSION_1_REG: + case KHADAS_MCU_SHUTDOWN_NORMAL_STATUS_REG: + return false; + default: + return true; + } +} + +static const struct regmap_config khadas_mcu_vim4_regmap_config =3D { + .reg_bits =3D 8, + .reg_stride =3D 1, + .val_bits =3D 8, + .max_register =3D KHADAS_MCU_VIM4_SYS_RST_REG, + .volatile_reg =3D khadas_mcu_vim4_reg_volatile, + .writeable_reg =3D khadas_mcu_vim4_reg_writeable, + .cache_type =3D REGCACHE_MAPLE, +}; + +static const struct khadas_mcu_fan_pdata khadas_vim4_fan_pdata =3D { + .fan_reg =3D KHADAS_MCU_VIM4_FAN_CTRL_REG, + .max_level =3D 0x64, +}; + +static const struct mfd_cell khadas_mcu_vim4_cells[] =3D { + { + .name =3D "khadas-mcu-fan-ctrl", + .platform_data =3D &khadas_vim4_fan_pdata, + .pdata_size =3D sizeof(khadas_vim4_fan_pdata), + }, +}; + +static const struct khadas_mcu_data khadas_vim4_mcu_data =3D { + .regmap_config =3D &khadas_mcu_vim4_regmap_config, + .cells =3D NULL, + .ncells =3D 0, + .fan_cells =3D khadas_mcu_vim4_cells, + .nfan_cells =3D ARRAY_SIZE(khadas_mcu_vim4_cells), +}; + static int khadas_mcu_probe(struct i2c_client *client) { struct device *dev =3D &client->dev; @@ -94,28 +170,35 @@ static int khadas_mcu_probe(struct i2c_client *client) if (!ddata) return -ENOMEM; =20 + ddata->data =3D i2c_get_match_data(client); + if (!ddata->data) + return -EINVAL; + i2c_set_clientdata(client, ddata); =20 ddata->dev =3D dev; =20 - ddata->regmap =3D devm_regmap_init_i2c(client, &khadas_mcu_regmap_config); + ddata->regmap =3D devm_regmap_init_i2c(client, + ddata->data->regmap_config); if (IS_ERR(ddata->regmap)) { ret =3D PTR_ERR(ddata->regmap); dev_err(dev, "Failed to allocate register map: %d\n", ret); return ret; } =20 - ret =3D devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, - khadas_mcu_cells, - ARRAY_SIZE(khadas_mcu_cells), - NULL, 0, NULL); - if (ret) - return ret; + if (ddata->data->cells && ddata->data->ncells) { + ret =3D devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, + ddata->data->cells, + ddata->data->ncells, + NULL, 0, NULL); + if (ret) + return ret; + } =20 if (of_property_present(dev->of_node, "#cooling-cells")) return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, - khadas_mcu_fan_cells, - ARRAY_SIZE(khadas_mcu_fan_cells), + ddata->data->fan_cells, + ddata->data->nfan_cells, NULL, 0, NULL); =20 return 0; @@ -123,7 +206,8 @@ static int khadas_mcu_probe(struct i2c_client *client) =20 #ifdef CONFIG_OF static const struct of_device_id khadas_mcu_of_match[] =3D { - { .compatible =3D "khadas,mcu", }, + { .compatible =3D "khadas,mcu", .data =3D &khadas_mcu_data }, + { .compatible =3D "khadas,vim4-mcu", .data =3D &khadas_vim4_mcu_data }, {}, }; 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Fri, 24 Apr 2026 14:20:10 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:36 +0200 Subject: [PATCH v5 5/8] thermal: khadas-mcu-fan: Add fan config from platform data Add regulator support 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: <20260424-add-mcu-fan-khadas-vim4-v5-5-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3485; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=JiLx8eTR6rFqMVIEqmUsuF0zE3OLjg1JbYglE13jrOs=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGmH/3WXGDQXLVWaV9MybvSOcr8ijfqPb1/bVEy1rN ze/uF/VUcrCIMbFICumyNI/1/LEu8tHz3zdo54CM4eVCWQIAxenAExkRSojw7bVGryrM0pmf2hY +uJN0rtHS6byK7DtT03K/dCiFrne3JPhn0rJU1XTo+KfVTUCMr7JnssuzUl+2RzjWBcb0XVXZac UMwA= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Replace the hardcoded MAX_LEVEL constant and fan register with values read from platform_data (fan_reg, max_level), as new MCUs need different values. Optionally acquire and enable a "fan" regulator supply at probe time and on resume, so boards that gate fan power through a regulator are handled. Signed-off-by: Ronald Claveau Reviewed-by: Neil Armstrong --- drivers/thermal/khadas_mcu_fan.c | 37 ++++++++++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 7 deletions(-) diff --git a/drivers/thermal/khadas_mcu_fan.c b/drivers/thermal/khadas_mcu_= fan.c index d35e5313bea41..5603fa099a858 100644 --- a/drivers/thermal/khadas_mcu_fan.c +++ b/drivers/thermal/khadas_mcu_fan.c @@ -13,13 +13,15 @@ #include #include #include - -#define MAX_LEVEL 3 +#include =20 struct khadas_mcu_fan_ctx { struct khadas_mcu *mcu; + unsigned int fan_reg; unsigned int level; + unsigned int max_level; struct thermal_cooling_device *cdev; + struct regulator *power; }; =20 static int khadas_mcu_fan_set_level(struct khadas_mcu_fan_ctx *ctx, @@ -27,8 +29,7 @@ static int khadas_mcu_fan_set_level(struct khadas_mcu_fan= _ctx *ctx, { int ret; =20 - ret =3D regmap_write(ctx->mcu->regmap, KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG, - level); + ret =3D regmap_write(ctx->mcu->regmap, ctx->fan_reg, level); if (ret) return ret; =20 @@ -40,7 +41,9 @@ static int khadas_mcu_fan_set_level(struct khadas_mcu_fan= _ctx *ctx, static int khadas_mcu_fan_get_max_state(struct thermal_cooling_device *cde= v, unsigned long *state) { - *state =3D MAX_LEVEL; + struct khadas_mcu_fan_ctx *ctx =3D cdev->devdata; + + *state =3D ctx->max_level; =20 return 0; } @@ -61,7 +64,7 @@ khadas_mcu_fan_set_cur_state(struct thermal_cooling_devic= e *cdev, { struct khadas_mcu_fan_ctx *ctx =3D cdev->devdata; =20 - if (state > MAX_LEVEL) + if (state > ctx->max_level) return -EINVAL; =20 if (state =3D=3D ctx->level) @@ -78,6 +81,7 @@ static const struct thermal_cooling_device_ops khadas_mcu= _fan_cooling_ops =3D { =20 static int khadas_mcu_fan_probe(struct platform_device *pdev) { + const struct khadas_mcu_fan_pdata *pdata =3D dev_get_platdata(&pdev->dev); struct khadas_mcu *mcu =3D dev_get_drvdata(pdev->dev.parent); struct thermal_cooling_device *cdev; struct device *dev =3D &pdev->dev; @@ -87,7 +91,21 @@ static int khadas_mcu_fan_probe(struct platform_device *= pdev) ctx =3D devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; + ctx->mcu =3D mcu; + ctx->fan_reg =3D pdata->fan_reg; + ctx->max_level =3D pdata->max_level; + + ctx->power =3D devm_regulator_get(dev->parent, "fan"); + if (IS_ERR(ctx->power)) + return PTR_ERR(ctx->power); + + ret =3D regulator_enable(ctx->power); + if (ret) { + dev_err(dev, "Failed to enable fan power supply: %d\n", ret); + return ret; + } + platform_set_drvdata(pdev, ctx); =20 cdev =3D devm_thermal_of_cooling_device_register(dev->parent, @@ -124,12 +142,17 @@ static int khadas_mcu_fan_suspend(struct device *dev) =20 ctx->level =3D level_save; =20 - return 0; + return regulator_disable(ctx->power); } =20 static int khadas_mcu_fan_resume(struct device *dev) { struct khadas_mcu_fan_ctx *ctx =3D dev_get_drvdata(dev); + int ret; + + ret =3D regulator_enable(ctx->power); + if (ret) + return ret; =20 return khadas_mcu_fan_set_level(ctx, ctx->level); } --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8214F3DC4D0; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260424-add-mcu-fan-khadas-vim4-v5-6-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=892; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=F350Js/5aqFj9YLCGASaC045elV+sRf2mbU4+Ox2uSQ=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGlGNnz/vmnocm/Wy29yIo6KZIbpi71UZL2X+c5Mnb P6bs0Kvo5SFQYyLQVZMkaV/ruWJd5ePnvm6Rz0FZg4rE8gQBi5OAZiIw0mG/0GJXTYsC6c8NV54 9MaH2rkv1pbEq0cKBr3o8MqaLGw2vY3hf27EkdmLivTZJMLW6hXOXvfuAG+uSAD7F8MVlV/t5/b psgAA X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Add the T7 pinctrl used by the Khadas VIM4 for MCU communication. Reviewed-by: Neil Armstrong Signed-off-by: Ronald Claveau --- arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/= dts/amlogic/amlogic-t7.dtsi index 7fe72c94ed623..e96fe10b251a0 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi @@ -376,6 +376,16 @@ mux { }; }; =20 + i2c0_ao_d_pins: i2c0-ao-d { + mux { + groups =3D "i2c0_ao_sck_d", + "i2c0_ao_sda_d"; + function =3D "i2c0_ao"; + bias-disable; + drive-strength-microamp =3D <3000>; + }; + }; + pwm_a_pins: pwm-a { mux { groups =3D "pwm_a"; --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 804773DC4CD; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; cv=none; b=kZFfzOibFf7sWMlIdKJBAIIsliPYNYmNeTxxGQnYbJW2VigLz5HMZOFPrDCPYLz3VLnxTRO9ttR4wOjfuL5rA+RDVEO6V44L5oEhvq5x39aqQZ3NYBABGb2LG3Ok7V8DzejlMrMLTLHltLsIDymDzmbXeASZReBEZRY5R/3GNGU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; c=relaxed/simple; bh=0i79ZDOBUMf/y7rR7lHOzqHQn+JRQngDYQDzRKcFojw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=uOcg32ioAGDANhG/pGMvPynKbNnF3b6WqmcAc//rBTRfQdRmBXjtGmyDEH91xMB8rzXIlcc6GNGGPeY0bpQ9xdq3RPaJr2JBBwqnFcZ7OmiPgSz7c4w0oHlpg8SyuO5fUIb8+cAWyWPdt9DHJK+C0O2W7Kebz4DE2I3tY3reLA8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UcNOCtIq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UcNOCtIq" Received: by smtp.kernel.org (Postfix) with ESMTPS id 492A7C2BCB8; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777040410; bh=0i79ZDOBUMf/y7rR7lHOzqHQn+JRQngDYQDzRKcFojw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=UcNOCtIqyytrpgKaaPTpw8EmPpcZI1BEa3BwuqlL5L4bfQPwXfYk6dkYX0+FLUvtJ RYNthdTPqsFrKdyVF/GQsCKm5dJr3QY58NGm7vjOGcJK8tkYu1bz6ZaMAp3JanmZt+ mdBNsQlojbcwRCaL/wBRYmWVwFZGaBiQS147TaxYRVJScThSP02E1HspBB1kNWetBC eQbwY2uiCIpAnpZHspCRSEQXvLtrLXGUJcaKD6hldZmDZ/ctHlKTRfQ5rlJtw1kX+K 6+djThWc8JMZ/mLxGglhwwc10UkxTIjD7PyshldEV/Ih+eeSfCOJh/Mf36iZcBLt74 o0nLLGSfvaqfQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41510FED3D4; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:38 +0200 Subject: [PATCH v5 7/8] arm64: dts: amlogic: t7: Add i2c controller node 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: <20260424-add-mcu-fan-khadas-vim4-v5-7-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1153; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=ZSNkfEC4FeiA6QucNF9aNhEEdVvV/IVtkbNzZYp3uHA=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGjGX+yePhLyZnrTL5nxewDaX2zvPR6yRmR3ufLiya 7f8vT8nOkpZGMS4GGTFFFn651qeeHf56Jmve9RTYOawMoEMYeDiFICJxKgyMqybsXz+2ZRFrktX NV+44el15te50x6O9fL8Zn6ms83rlx1mZPi9Ndyy3y17TZ2RmkLMh6kHHPdHOM0+/HzJykV3Ymq XvWMFAA== X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Add the T7 i2c controller node used by the Khadas VIM4 for MCU communication. Use amlogic,meson-axg-i2c as fallback compatible. Reviewed-by: Neil Armstrong Signed-off-by: Ronald Claveau --- arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/= dts/amlogic/amlogic-t7.dtsi index e96fe10b251a0..560c9dce35266 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi @@ -711,6 +711,16 @@ pwm_ao_cd: pwm@60000 { status =3D "disabled"; }; =20 + i2c_m_ao_a: i2c@76000 { + compatible =3D "amlogic,t7-i2c", "amlogic,meson-axg-i2c"; + reg =3D <0x0 0x76000 0x0 0x48>; + #address-cells =3D <1>; + #size-cells =3D <0>; + interrupts =3D ; + clocks =3D <&clkc_periphs CLKID_SYS_I2C_AO_A>; + status =3D "disabled"; + }; + sd_emmc_a: mmc@88000 { compatible =3D "amlogic,t7-mmc", "amlogic,meson-axg-mmc"; reg =3D <0x0 0x88000 0x0 0x800>; --=20 2.49.0 From nobody Fri Jun 19 09:11:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9196F3DCD86; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; cv=none; b=QfHyCcgCsNppIHclLMcmTZpL6I8efVWOCWNeN3QQlt1Vau7XgF72pb0+QVnYgM+NHI2xxXtIDa2WjN3VIcnGRQdw0i4VBP51/LzpRrOzdAwlaes5dQ0xvHd9NBWo9gaR3EVLbEDW8RJREVrOjSdaCjpL2OUvaeqfsGVzAyQzBRg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777040410; c=relaxed/simple; bh=fm/6sk7gCdpwISaGU9WT3cWYZ93Sf6uQPBQjjnBRxxk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=SN3faUWmfEY6CsrLwk9b6cBpph2lI/nR4cxxDtoXsoNjWKjLy8ZVsjElrWWY9HCiSRP5qYko3uJOFGcHuaVu2VS7gDmr4nhrAg9BaJtAY3j1HK4yrC/8ybO3xfL3xu040kyksk2lylF3l8x5vcOZqbrplscZLdUbborBfiD2YDA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MB4pC12t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MB4pC12t" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5A745C2BCC7; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777040410; bh=fm/6sk7gCdpwISaGU9WT3cWYZ93Sf6uQPBQjjnBRxxk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=MB4pC12t86Z/VzsVD3nQdz3oT89F5fU6XkgRoSTZdHS0A34SN+Y1AlHXjljYs7G4s AZ34sGLTGRC6bijfZUpH+FD44lpA0wjfci/rLgeO1Yf8fAbRa5ztUY8V/AEXCFQHGL FiOdURxWpmd4mHJ/AdT0DjbBtfHKQ9GvUDqkAdq4lMzSzosEwDoQN8aZasfVOaXadB WP5T2wo46mTqG7CCMbHh55iyyN6hl7lRu3fd68bzFXS5oRzsmb9fuk7lgJuzbfkD02 1cac98Zg0CH0POYbW8Z2NovCArRrBiq3CiSK4zA2VDbuvEe4N3hmvieeDbKrs9bQT6 lxMyfHzCsIGGg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52B62FED3CC; Fri, 24 Apr 2026 14:20:10 +0000 (UTC) From: Ronald Claveau via B4 Relay Date: Fri, 24 Apr 2026 16:17:39 +0200 Subject: [PATCH v5 8/8] arm64: dts: amlogic: t7: khadas-vim4: Add i2c MCU fan node 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: <20260424-add-mcu-fan-khadas-vim4-v5-8-afcfa7157b23@aliel.fr> References: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> In-Reply-To: <20260424-add-mcu-fan-khadas-vim4-v5-0-afcfa7157b23@aliel.fr> To: Neil Armstrong , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Beniamino Galvani , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Liam Girdwood , Mark Brown Cc: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Ronald Claveau X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1026; i=linux-kernel-dev@aliel.fr; h=from:subject:message-id; bh=ReP9jX1LqZ1xk8srjfORg2VmRh0QSxflyWImCLygV1k=; b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+brGnEG9dZth+5n/36TXyK1d9qhFbu+p0y1/tLzYGPPu /Dds6Yyd5SyMIhxMciKKbL0z7U88e7y0TNf96inwMxhZQIbwsUpABM584qR4VBNZ9Rd7mPutqvr Q60ES99b7Q8xFDvc2q3nLimd2jbzLcM/W0f/AoO339yva95vnMnusMDx+usjDvvUy0QEGf9/6hL gBwA= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openpgp; fpr=DFD863F61375BF917F0012173953305EF1D0EC3E X-Endpoint-Received: by B4 Relay for linux-kernel-dev@aliel.fr/default with auth_id=744 X-Original-From: Ronald Claveau Reply-To: linux-kernel-dev@aliel.fr From: Ronald Claveau Enable and configure i2c MCU node to get fan working on Khadas VIM4. Reviewed-by: Neil Armstrong Signed-off-by: Ronald Claveau --- .../boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 13 +++++++++= ++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts = b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts index 69d6118ba57e7..5d7f5390f3a66 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts @@ -157,6 +157,19 @@ wifi32k: wifi32k { }; }; =20 +&i2c_m_ao_a { + status =3D "okay"; + pinctrl-0 =3D <&i2c0_ao_d_pins>; + pinctrl-names =3D "default"; + + khadas_mcu: system-controller@18 { + compatible =3D "khadas,vim4-mcu"; + reg =3D <0x18>; + fan-supply =3D <&vcc5v>; + #cooling-cells =3D <2>; + }; +}; + &pwm_ab { status =3D "okay"; pinctrl-0 =3D <&pwm_a_pins>; --=20 2.49.0