From nobody Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 0DED92D0614; Fri, 17 Apr 2026 16:37:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443824; cv=none; b=hHgw2HUXnP3F2KVg0fvKIrWi3bWl/1541oUURMmOk5DOUyQBrvyVj1bkSLJSGv9H0PmkWbGjDp3fSy4TGgUZ2OivpTfzoeOQnVnXWpLrvEMbZtUivc5fz3E7FTv8e2FD80Xd+RmrNyCz2XyG0eP6J9ef1B2D+3JWDyfAjjiFMsk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443824; c=relaxed/simple; bh=BrvwGQP22Wh76pAifZEeJmMBXC8MHpG63+5VQQNLAYM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JNCET3LYx1pEkQcxXmSAAuMWqcT1Nr1sKG0pwomb9tNHUIZ9vNIRtGMuXc90oPc6JRZ9jep+wm3yyiVJuwLG6M57oBYqkYQSXqR56EzQ2LHXF2JY8Iv/FXkQnPFg8bty4EeraBySyMB0NHlfaZS8NRwJ+Sxg5jmHlU3frtmPsdg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=iFKBJsTT; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="iFKBJsTT" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443820; bh=BrvwGQP22Wh76pAifZEeJmMBXC8MHpG63+5VQQNLAYM=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=iFKBJsTTz2uT+aQnO5evyqxD1BvqlRbO1tbj9VYV5CgUakh1P0eV4SgJdSfOxhcDi RHLji55bmooe0JvjSxxKFr8dWNudSu4fM6NM4ht2Bq1mfnW0NKHd3Xksj6KDeKV68j RnfwHbyc/GEf+a8vKrj5+X0JAvivJCeHBwjmrUMw= Date: Fri, 17 Apr 2026 18:27:17 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-1-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443816; l=1126; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=BrvwGQP22Wh76pAifZEeJmMBXC8MHpG63+5VQQNLAYM=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QNu0UZHq67B+OChJU3byJgOs6XGguU2h+aEBBq7w/pgu4ny1Qf6kPJGwGR7AJ9/SuiDPyonlhrd CbinxBhs2NAg= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs The Khadas VIM4 MCU register is slightly different from previous boards' MCU. This board also features a switchable power source for its fan. Signed-off-by: Ronald Claveau --- Documentation/devicetree/bindings/mfd/khadas,mcu.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml b/Docume= ntation/devicetree/bindings/mfd/khadas,mcu.yaml index 084960fd5a1fd..a80718f7595ce 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 @@ -25,6 +26,10 @@ 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 2.49.0 From nobody Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 36301329C66; Fri, 17 Apr 2026 16:37:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443824; cv=none; b=KTyi0AxCdWAHSu92RUxAsQYpSt8Z+WBHbX0grKfGq98O0GZFWlrqrhkWa/u+5I315H+q80u1IxZiJGRm9FEwquxHOVC6O/NKI+h61byTHY7dStist8/fX8GanQOmpu/YwZ66qdpd84AlBjujUVXxOwr0yZoXg0tGAVovVoN0NuE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443824; c=relaxed/simple; bh=dSGVBP6Kwid380fHwj/yvIcbmVkBngDKwALA0QzKSyw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Vjg1+11voVRpI3gjvJmhOpYFjSaDL643SneXMsu+nI9R403nkMsJwbj4O+E2b0KxBQAUyB7peDxyHDzxhSY54LkSC/kBGYYQZl9LchZTKOQgEo57cfbYCWaz0DLDR5JJCZfP4l31e+Ia53TvGCriHk69fEbE/m6jKo2AMsDrE2U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=sOC+/nc9; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="sOC+/nc9" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443821; bh=dSGVBP6Kwid380fHwj/yvIcbmVkBngDKwALA0QzKSyw=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=sOC+/nc95HwQ3If8FUGI/tkBtJLHsXdQnLbO7PiFt9lj0UA2hMwm3RZQ6KJKdCUqp ysXkOG4oYCUPTjrF4sDoS2oWo3kaA7rdITvI5XHCLsjSs+zSt2huR5idMSgkqrwGpr SaxJYKLQCoL5JYVRChH4SBObGEjI0TD/2aMKiN8U= Date: Fri, 17 Apr 2026 18:27:18 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-2-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443816; l=1268; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=dSGVBP6Kwid380fHwj/yvIcbmVkBngDKwALA0QzKSyw=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QIJzFTKW3rJkbI8G4HNHwG/SaKlPKhhf1BMkq9mNhnjhgPsdVTXoHB5c3luaopWfZXt2ICwrk5L wQkituZfWtAU= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs 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 Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 462BA1A682C; Fri, 17 Apr 2026 16:37:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443825; cv=none; b=av8oOHNtPj0hcJfSSZX5sFeYqWr0LVrABgvuQSTxr0+sLTuZnHoSMUR055DWyCajB7U7Z2rF5k9EvAwNHBgK0p5JM0M1wF6sHSEpnB4/cpKh6Y8vUAr+NtZ+OOit2PZAWafLy+0hblsBM3WwOedb6V16vL//X++nKMISkJ5DxUQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443825; c=relaxed/simple; bh=OW1b2Q/DJTEMxPikE6mdf/p+H5KyL7TPJwoR6k9njCc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=omsFgIHBAAHkoN3Nlh3r+6d7D3VAsOrfvbGZH5969prfZ9HuNDh2+UI638K5g8d25zhu9NNn8lD593yfhrYS1WK72wqS5pvD/kr0U2f76uhu8C1MMUTcVLcjd3Z9kC7Y6DCd8fQjAtfyyYKw3wKdZi6jjNZT6/SbjyoocmzfAAo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=H+NDf5jh; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="H+NDf5jh" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443822; bh=OW1b2Q/DJTEMxPikE6mdf/p+H5KyL7TPJwoR6k9njCc=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=H+NDf5jh8sVTkrPc44iNmFBBQsqlAQ6ZUrfo98N1XAUFJrs9QoCOKUEksbIdvTdaB hrcT1oRRwqjJzHBCrMCjySQxios1NTCkqh8SQdTG2ouJ9irZh0x4dJJgpSa8xUB40q 4TX8VHJ7qiZuj88+Ysu+T37Jw3BHwLCj996AGvAQ= Date: Fri, 17 Apr 2026 18:27:19 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-3-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443816; l=2417; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=OW1b2Q/DJTEMxPikE6mdf/p+H5KyL7TPJwoR6k9njCc=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QMCdn8xfIyM+fQy2ZDCjGnTo045FT82SqUp9xOk/xUk/qbhgtrh/EmI7WIP7cvfXg8tOMD64SAe Fkr9qda31sQU= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs 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. 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 Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 5D73E35F184; Fri, 17 Apr 2026 16:37:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443827; cv=none; b=otmw8b/RLXg/7MtmGxmD6MIxn0VQCdQVtCFniwr5K331JosrEL4epm42ZG1/et9CTisjfoNGnjqqPGX0uGlqdMJCZ3AgwLVRRmoMUst/9UWURrr4HBU1snRPi3O0wV4Bm9FQ+qsoNddlXVMzlJm4+2kYa5Z6aDZay8yZiMrh+nY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443827; c=relaxed/simple; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XD5MuXmNALJPtKGyTXsyihEdeEsykdZMFyI5Haef6v0oQ1+IihGh7OS5pQkWN0DVnLlIOetxF2maH3JxRaGSVQorBpdF4Mm3KD/dlf8M34RNr7msdEL+51lDggvPgn3tUQw98jJ3g/dajO7AxqIi9ZQfHorGCw0x5ojZcoNgx04= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=OWSlfbqT; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="OWSlfbqT" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443823; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=OWSlfbqTKUNrmW7vnUgt6x0Gujv2xdlNGJOffDiz1FVEGkSJuO4WACHg9Y9pAkwxK NdhAbHxdb2LWcIGS7bUBwa+9C+joKuwR6X7m2x7m1nIWzsaQnUTD/uyBk+9IfLsDOy uhQPXLDSdpwmO7/DyHVozaAdoA186sVCNtqiB8bo= Date: Fri, 17 Apr 2026 18:27:20 +0200 Subject: [PATCH v3 4/8] mfd: khadas-mcu: Add support for VIM4 MCU variant 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: <20260417-add-mcu-fan-khadas-vim4-v3-4-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443817; l=5062; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QFh0Pe0OBWgiKeLUb3IHC/7wL6xuMjbfLaC+kqLdpRNxaeiA2plm01VnQgHgW9FU++kRjx2y7Aj 2OWP5K6lyJAI= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs 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". 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 }, {}, }; MODULE_DEVICE_TABLE(of, khadas_mcu_of_match); --=20 2.49.0 From nobody Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 5565F355F39; Fri, 17 Apr 2026 16:37:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443828; cv=none; b=IzFHCG+DKg9WBIeOSUW9D4QJbRiwzkpiVc7c/WJ0vUg8NEVFOQI1HBwgMZIwwd8RhGuOAo6odm6eTEkAVcTN95wsAT3pWc6wEUZcdEPb6TzgWIDHCHFrQROgZdPFPl8ZpAagw5dEuuu6uBMsRHxmIhmFV+NBYylWhjuGmGRtf2I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443828; c=relaxed/simple; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rP2pIlCkZYF90nyEZZrbXkZVbeBovqXw2rzSCrgQt/jDGPA3jxq2sbzmipn9Q78SeHcgNTk4plXBs8Lttc5dq1MKFDz56ie4UX7XD1jfOKeiuEwnZu+LzOPZfTu/jOu0RNL30zZSp6LO90Vn7ErHO62ZtGv2mMUCOE90xt4EtQc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=Ly8nbi26; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="Ly8nbi26" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443824; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Ly8nbi26qrMLaGQRrzH3rZ8S9v23l4KbA+TDrS66lnlUcxBEr93Qk72K6DvL8jyyF Wd2twNpdanfO6n/UhZIPB0sJSjxeRFiY7PZe2LfjWHXDJXRIq8BV/fphVpHZ2wEsBE yZ5G1OUlaDDrtNvCp0irAjks/3rvjX5uHTVLaF4I= Date: Fri, 17 Apr 2026 18:27:21 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-5-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443817; l=3477; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QKqa9WtdQryku9d1bY9LkB7Eo9boq5evT+dHuDYDPdahtP82Hdzq5ZRaZIHvBGMn7rG0nDNEwd/ 3thDnW7nPjQs= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs 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 --- drivers/thermal/khadas_mcu_fan.c | 49 +++++++++++++++++++++++++++++++++++-= ---- 1 file changed, 43 insertions(+), 6 deletions(-) diff --git a/drivers/thermal/khadas_mcu_fan.c b/drivers/thermal/khadas_mcu_= fan.c index d35e5313bea41..24559bf65de46 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) @@ -83,11 +86,32 @@ static int khadas_mcu_fan_probe(struct platform_device = *pdev) struct device *dev =3D &pdev->dev; struct khadas_mcu_fan_ctx *ctx; int ret; + const struct khadas_mcu_fan_pdata *pdata =3D dev_get_platdata(&pdev->dev); =20 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_optional(dev->parent, "fan"); + if (IS_ERR(ctx->power)) { + if (PTR_ERR(ctx->power) =3D=3D -ENODEV) + ctx->power =3D NULL; + else + return PTR_ERR(ctx->power); + } + + if (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 +148,25 @@ static int khadas_mcu_fan_suspend(struct device *dev) =20 ctx->level =3D level_save; =20 + if (ctx->power) { + ret =3D regulator_disable(ctx->power); + if (ret) + return ret; + } + return 0; } =20 static int khadas_mcu_fan_resume(struct device *dev) { struct khadas_mcu_fan_ctx *ctx =3D dev_get_drvdata(dev); + int ret; + + if (ctx->power) { + 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 Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 7A76439D6F2; Fri, 17 Apr 2026 16:37:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="LTnJCDF1" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443825; bh=Y66wwsu4uCJ5vCnrkH5iYoYFi2DeQ8efaTE8Rt+0Rik=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=LTnJCDF1sgipivAwbS8TcOCfGQ2DvsxgACmibGiXyAITFxW0RarJ8MXbhgYC46LpG VsWj2mBUKRas0Ui3LcdFuk5+IkkxsG3Icf6eICGirPqattpdt37lO03OlXiepByVlB +rsDK/mg3j9uta3ykcyFRGW2XhaJ7sMaLRc/EZm4= Date: Fri, 17 Apr 2026 18:27:22 +0200 Subject: [PATCH v3 6/8] arm64: dts: amlogic: t7: Add i2c pinctrl 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: <20260417-add-mcu-fan-khadas-vim4-v3-6-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443817; l=835; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=Y66wwsu4uCJ5vCnrkH5iYoYFi2DeQ8efaTE8Rt+0Rik=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QFZis03RLM5kQ6nBcx2Ka8L/Rxw2RsByhRmge47uaaFUCmFEYE/u6YZkIaYB4r4cqBHzvwzhyyT LaHhZz0oZTwk= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs Add the T7 pinctrl used by the Khadas VIM4 for MCU communication. 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 Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 88912311C2F; Fri, 17 Apr 2026 16:37:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443830; cv=none; b=AVmKzTHGw79OsKcQLC/BSDBjuyPwLC6sKNLuiaTymPS7EzWWrUtsd17jP4eZco1NtAKNFtpQ2yl4iJjdMJsQsriEd4IbYBDdaZHzSCm9GJ+LIT231eefZ5+L0coXdPHTWxY/X+SEAB/oBvnkDYuaIkxMDJFdchehWnZRvO/F/ek= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443830; c=relaxed/simple; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GrN2yUj3U6XsY4Q3CY/X9uYNt/TN21Yg0XXbbV+Asbm9OoHs0Fn8LqhgumYLGABh4ksaGIDMjfO8th3FB5RNvXqKw5unj3xNzvYTW4L4FtMh0p5sYHioDnc12VZRg1kv/TLkGl6hZGLfoVoKxOBiebwDTTIFke5bbDlCxatwxiU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=Q4Ejezfp; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="Q4Ejezfp" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443827; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Q4EjezfpuPTt9AVSnimRTljN5XnpxjUdRWp5/ul5S6uN1ZrDwr12dzgJ5RHwrIbm/ i+J33okaC8SEmDMIxcTHAUJxGOzkqk9hstG9mYm9l0KyibNLpJfKBg4fntgj/O1hYz Bdu8HojLnJ+VXlsRBr0u11fZ15RvrZZMih5aMStY= Date: Fri, 17 Apr 2026 18:27:23 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-7-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443818; l=1096; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QOUY/VGuHfeWgAUgMlf5mVaLJeEDis5NNiVBuNAj+P7K604hwBDgLiRSiplNKbZ7X6ukeksqDUG iau9Z9CulzQw= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs Add the T7 i2c controller node used by the Khadas VIM4 for MCU communication. Use amlogic,meson-axg-i2c as fallback compatible. 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 Tue Jun 16 09:03:07 2026 Received: from courrier.aliel.fr (courrier.aliel.fr [65.21.61.41]) (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 B1FE13B8BCD; Fri, 17 Apr 2026 16:37:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.21.61.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443831; cv=none; b=Re4bx4pK714MVZQ3etRkriTg4aP7bxQ9P7uQ+wiOyxzwm8y7KFg9KIgshg/8Fm8P2lFEicXbak+pAzQpH0iU5vRhWdfAhdKG0aJjKmdSclJQdiGkAytzYSDZQ7fmIwoKe7mUczlLs5ETadRHli6rC3spcq9/D/d92ibBRATck7k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776443831; c=relaxed/simple; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Id0/socXHYSvOgOcL3xcrnH97nfDJ9lFjeE5ZAdiAGwySkva4kL3sEXwQa9r9lQebS7EFabhlzZR/j9GLUvx/eDrn24QJJyh+N3ZU5BnuP3l3oCqFg1pU7A7STdITy4A28eALX15LFq7PZ1W/1VRpzOPy4M5TE8yGwsmz7U6Tm0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr; spf=pass smtp.mailfrom=aliel.fr; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b=UKyaeMjW; arc=none smtp.client-ip=65.21.61.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=aliel.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aliel.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=aliel.fr header.i=@aliel.fr header.b="UKyaeMjW" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1776443828; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=UKyaeMjWUcKnD9zAv8zJPBSrnqk2n1SMU4oVAjw9yGbs0yL6FDVhoo0Ric2waZGe4 hU+M+CY4LNI23hIXLtuDmxtraU8btUsAvPfa/ZYQbvn2BYSliD+8DZYPg9+RiUAD6z IbSm8Gw5L8PY1mio8dSEBIoojMvYTcvZ9Xj0kaPw= Date: Fri, 17 Apr 2026 18:27:24 +0200 Subject: [PATCH v3 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: <20260417-add-mcu-fan-khadas-vim4-v3-8-a6a7f570b11b@aliel.fr> References: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@aliel.fr> In-Reply-To: <20260417-add-mcu-fan-khadas-vim4-v3-0-a6a7f570b11b@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=openssh-sha256; t=1776443818; l=969; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QN/dYkD2B0h67pd/skbXv2YwanXlJWZMFNrSgKAnH7oN6KvpXQkf4z2/bVVV+yiQemeyiyg6rem mlbNijAs0cwo= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs Enable and configure i2c MCU node to get fan working on Khadas VIM4. 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