From nobody Tue Apr 7 12:38:52 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 735AA3CCFA3; Fri, 3 Apr 2026 16:09:23 +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=1775232565; cv=none; b=A10uO5N7HSdO6MtFXD98/uWYtnEOlh2tF1WZg0RrdlrSyVf3VaVQgmNwQmxZxfKrSGPNwobkRZPlIx0e/bK9W/LKQCSyraJgUDQlIGSut/1uvWieAdYYOz6VSONEZosAWgq8Fo+OCPGl8n5QEnVeDQuj5hFSK6NIXhJsKF9xTrk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232565; c=relaxed/simple; bh=Q8ByvFFPbagYCfBbxUtAun76d9Q2AZFAwBqZPLsNOk4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=oaWUs4EURrQklWxN9cPA+z4NudNgsOCA495GU/juj+WLLWCJiud+OiC/klLNgWb2D7/fgOr8JDe45wXg6H2sfCKMuQyrvKMWj+Vv38r+ESr/TiDgDfOv1k/76L8x29/XAwEQ1/23yQ4QVju1uqfilAKPbsAgO2BN6AebmXvzIuA= 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=ba+dg2Rj; 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="ba+dg2Rj" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232555; bh=Q8ByvFFPbagYCfBbxUtAun76d9Q2AZFAwBqZPLsNOk4=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ba+dg2Rj/LoUI10tNBOgsrOpdo+R21DNRDlK5sH9pPq0UxTfjw+BcRTcQIf/v+H75 8TBl8to7QpxPqvIk0pU3Zdo+4SgIVZmOWrSz/VazoGfvBHJxY4qLOCRYh1dFmIWJ1e iXcJTTuFhtl8LvW34+JVjmdoxYfOfcq1r9fL89y8= Date: Fri, 03 Apr 2026 18:08:34 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-1-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232551; l=1084; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=Q8ByvFFPbagYCfBbxUtAun76d9Q2AZFAwBqZPLsNOk4=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QN+HSpfVr3U76oMKxbTnvYCN4HQkwOpO+FuclfO5fOUGdk4TD1qkgOSRYaKTwmsfXofiiJi8mb2 65R3L/cCxJg8= 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..67769ef5d58b1 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 =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 Apr 7 12:38:52 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 11A973CBE67; Fri, 3 Apr 2026 16:09:24 +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=1775232566; cv=none; b=QcQUpVpMteklINKvAn+S1cMyBcfMwwPXJ8HxTAj9YZT0DpYMHtLey1Awk/Qdh7a6NMlwhEP2BybSO0Efg/phNJAsyvLaNEJDuNbw4f2kFWTrCymMFF5cS96SY4zyi03Zg+DEl3fXpDKu+yuPWX/1b1FX4HLp55e8rR1coM4bWNc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232566; c=relaxed/simple; bh=/fmGQFbRzxXF36D4HUeJ6hELpl1p69vINpfqcmw5ok0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Sn5rBzCYc8SQZ5kFVEHcT7BanBAy4XI1eyXczOUVg/FY5+iQBq3Ooj3GUVK9Gi6+LvuoUjcIWdkwCtqqPKgjp1jP3TznLGJJ5x+uzjGbJ1gHQpJJF+53svHA0dJnHGJTNSKhDobBoGWV6YVeiyFgiCpuXwwSqbokvDArU0rQQeQ= 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=SOXIcjTj; 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="SOXIcjTj" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232556; bh=/fmGQFbRzxXF36D4HUeJ6hELpl1p69vINpfqcmw5ok0=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=SOXIcjTjJLGxz21UTM3OPOoSLO/k3lX81LLF4sintY0YO5e9y6MkpaTABcH1w5PiR +n9kPL5LssLVNkZ2l6YK8A+/8fgI50reiwy0Fow+NAenWQL2KsKCy1QvYodJEGeqoB 05+U5vCKe2nQ3xIcLTMvyZQV/0cM9leOt1Q1jE1w= Date: Fri, 03 Apr 2026 18:08:35 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-2-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232552; l=1221; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=/fmGQFbRzxXF36D4HUeJ6hELpl1p69vINpfqcmw5ok0=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QM3LYApU8WsFd03fdnmNcMEFN0ayANaLxohn7HhWMH9BIABqx13wtAncxaXxiRDv4oCgScgfkJA vcxNdBwZChQg= X-Developer-Key: i=linux-kernel-dev@aliel.fr; a=openssh; fpr=SHA256:kch4osYZ6A1BrPps5AUs6KnfdE2wm4ocMtyTc8TmZMs Add the T7 SOC compatible which fallback to AXG compatible. 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 Apr 7 12:38:52 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 2E6823CB2C1; Fri, 3 Apr 2026 16:09:25 +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=1775232566; cv=none; b=klj1iYbbPZXoMUxf/5eiHq1LMmt54c1Ceg6RD8yMeD2VaMDyxWSSLoDnDs4jRVoJ6vG30FvoN57yOhhjuy1WAu1ujCMaoYIBHbOYJHh6dHCEZHigPlGZ6VhKznb8KWKApEOwcNnKuQLJJCaaDY5clztcVqouj3oHAOi2arw3E/E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232566; 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=XASUNmuklp0ZNBL2aGVml1la/zL6JdRy5os7E3RY2VCn9K9mlY7g7oKHbzg7620S9PqeTMxvsKn/zD6HaBanWAkYceQphsYkNdSPolBYo+mSF0EJnkKk6WXWYwhAatLdEpw8D70zxSS84Uv49ZrvVZkdPmPTehgUA200rNPLjEA= 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=PfXZMFwX; 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="PfXZMFwX" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232558; bh=OW1b2Q/DJTEMxPikE6mdf/p+H5KyL7TPJwoR6k9njCc=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=PfXZMFwXIsrCSGosZonVrGVmWJ+K0tfoIGVOLJTEZHqMjOd1C8y7YNQGoV8BBdDKM Aqz3mhfR4tgb4+gUt9kiMeDc1oE/jey/DwxU6JhX9Iv9IjvpJ4p1M04P75gqUs36Wk Tqf+o8kbtjCbPThDXxmj8zY2tolXEyosnTrrINWc= Date: Fri, 03 Apr 2026 18:08:36 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-3-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232552; 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 QBYAqg8sMjvR+NKLPDE6Tj+YQsbEym15keBIbm65muteVJUAKrgLJTN7ouhVTiko2nYSYH9FP00 fFT0k7WtOXQc= 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 Apr 7 12:38:52 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 2CACF3CCFD1; Fri, 3 Apr 2026 16:09:26 +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=1775232567; cv=none; b=TlBz5v6rlYrKwsMEkc6x8D0K6kttvqI8+PSuAWdTH3AiRiEqOV1ZBcCUAMAy/05eDE/wQCH0rcObTUf7XtFJzeVuzjjNPSOGWxQgZCo5qlWkkYtxmHK1hAAXd590QoYgWCTRvGkv/DzSF4Wz/o2LX+rf/zV3aHtVxyfY0Rr0KWQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232567; c=relaxed/simple; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=X+KwmA7MwvY4e732s71rVPHLgVjxgjrWQBio0cXhS4V89UoeGrtVI7YpcgY1F80wV13Qr6nNxI8MVkoaJMHBnxLnWTkAaAo80Xd4tV7OqMTBGPF2ysiY4LjWnr73vx6g9DyMhibCCyRHVbQAUGcovWxmbZvgxerg37J0ZIYV9GU= 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=syPq+mVR; 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="syPq+mVR" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232559; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=syPq+mVRfCWfVMO5kwGj5d87YfQIA8M8v5mx3QAzGQPSVEB2LIRNy34U31VsWEhPI zaYj4LvmDfdagEhc9HBu1qP9u5JLT87WVjtcdgIlBckDp1lYAy8ozszD4FbnkQUGbZ NPM2Tx26mP9XX+gnqKZ7Ck6zFHtiyS7fmwOMyzN4= Date: Fri, 03 Apr 2026 18:08:37 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-4-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232552; l=5062; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=emjopVGd5uVLfwcqEy71jr1NYUE1/T1lgxk1RfDuCzk=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QIsXEJ4KldedgbozLhByCUwgiAptnRgyd6YnNjxsASYMDtbP1w6KzoV+MY6POn72D1RG5kMF5hy F9AK2tmMcQg8= 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 Apr 7 12:38:52 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 57CEF3CEB84; Fri, 3 Apr 2026 16:09:27 +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=1775232569; cv=none; b=UAaOH4olFdiMgdwDrVZCMlhEcEUhZn09DjLHmLwciTGhmXF7z8v1GYP0MhLxlbF6Uk6lc8Vnq9e0+gsmW+tVNRwOEghEjTw/8CEomQJ9CCxj6nf9z/0+xVxEoLlPmkl1fxvwJZgbRRG2aI7hu8pF0GIC+GpxdNDfbpQWe3zLFTQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232569; c=relaxed/simple; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=O86LkqPCvB65w3/IJ2X3MSgsuFugBr4e4GSFjOmdkjGknkXItlJ2rCcLf4ZGlmyE4+dVt0Xgvmt+XZ4YOLGUrHPp0jf6L8zQcJJk+xUVepT/22fCsi3vw2p8Puq+D6wFXTfZ1AS1Z04F9Hrq2RCT4Va5o/UrOdoSww5COJW/8Ls= 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=EUSknzW6; 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="EUSknzW6" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232560; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=EUSknzW6QXDFBYi2M6ZqAl4SVbok284Y2Y48z/7aUBxPgf4Wpt3v5SPa+HbN7rpAL WLGiXGrBZ6X60yVoUYMxcDSv7r2UdRJMBp69j74ROe1H5U2LKzKOLdGzrlQcwXe0DL c+A9m97tM5uv7aU3VCXXjAr06SfFnq444i9f2uco= Date: Fri, 03 Apr 2026 18:08:38 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-5-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232552; l=3477; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=J2SoalosCyxImvGFu5R4J5FtFH7pMqPC3RBWKZVsADo=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QEFj0nfFG83jnBBd60nayCy9VVofB4EIdNwOIGL1JZxdO4sU2taPxbmzNMnLl+Iy7VzNGFGRYEq v3kniuehwGQI= 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 Apr 7 12:38:52 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 69FA83CC9FD; Fri, 3 Apr 2026 16:09:27 +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="LnTvwpkM" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232561; bh=Y66wwsu4uCJ5vCnrkH5iYoYFi2DeQ8efaTE8Rt+0Rik=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=LnTvwpkMx771x6nRMdFlVudAEKFabKfAf9/d0xkkrYpRZWgqam3aViXjyt8shUWDu GJbBHxwtoybWR+mL8YHwO685pYILWhjVCeAPHoVJ58u3W1HrDLQjsu1ec/yxxVbU/P Lvd3uyDWUMlk1KZsAO3V7Woudt4xm8Q/DyXamun4= Date: Fri, 03 Apr 2026 18:08:39 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-6-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232553; l=835; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=Y66wwsu4uCJ5vCnrkH5iYoYFi2DeQ8efaTE8Rt+0Rik=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QPsdm36JJcZByW1pADuyo5JpuH9aWQy2RcwjJ+3DsRcX8aJUcMiuWkoxy6rs3MsOcOzR0qTWkVM R0IKuLXm1ZAw= 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 Apr 7 12:38:52 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 B7A003CEBA7; Fri, 3 Apr 2026 16:09:27 +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=1775232569; cv=none; b=Yb8le7Vbd/toXSxEO46Xd6vg9jU79H6diHYPlMQgAxIPo9VeUE2Iqni61GgGzaSnMOj99urunN1CPZSog/dOB/aW+WSbbHjhGRF8H/8U/HTRq9KcKZiTBfkGKPlNOjQMGF59PaRULfJYltBUIZLqXNMSoRBW6COXDnYdFDvWUV0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232569; c=relaxed/simple; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bDOKmI5+nCCCpbbC2kcEVEFUHnjbFqoUviOYC6NMnhw+c8sibOV/aBPlLNM4sRj6AmW35FZxUaicljn+VAf2Y4pwTNc5Xlsgc8C4l/7rvAy/dz1GVDrckcMFWxzyTIIyDn9U//hqRg0mddkSQzvRqcfKdSUZChIZQFMweIk7F5w= 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=B3JVvnab; 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="B3JVvnab" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232562; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=B3JVvnabQxDwsh19RiSPZx3E36kxP762zqVO4Yr1cyAAw/Wh6DqhPQTCrMS6VXdwn Vw+i3C6t6gL6b+vzraNgIBvGaXxcqwjMCc83Mhxi9ojSpTU94YVYwaHkzouqpH+g9d B4CkzF43RmFfaQSj+K9iAvPj5I/oYp8Rbn5DpAVU= Date: Fri, 03 Apr 2026 18:08:40 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-7-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232553; l=1096; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=seZTIBpCrIa88Q5I5ls9lWfgh7ETpuTsfLV3IO6SlWs=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QEXDRGAyNmRXaacwFkUGeJSbSzPfxyNgWiYooeL9HDttqmyXS731nvLpUBxymTmcuz/IWYX8mmf S5FdnAmaZWgQ= 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 Apr 7 12:38:52 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 CA8783CA4BB; Fri, 3 Apr 2026 16:09:27 +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=1775232569; cv=none; b=o8G/e/xAp+3OEpAU5hnemytiE/qetZHtqIqkQRF2LLc0YUCx9ILtR3UHFFubRU3f8i4zVvK4koMsyFp1GS2DSs3evT4yUhyF1vZbmh54MtQc4zmyU+MiR0416XlNwR76qx9GJXun0N1EreS/1chwpWmExEw/SM9vBvOxDnKzBu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232569; c=relaxed/simple; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=g8ul151JrduGlljISUh5eSsi1fQbrvsUnVax7kIlFtJ+IN5sqJgv2qCrAhC6J4KiSXeoEsEsRzu35jaSTPWXbJRL/eRxQKq2l+7Oat8zD4vLkSjrJ/uZRIFTO7RC0PGqGp4D+Rdj60N0efR+BCvOT4tEiZYGLUiijx01R4b2JwM= 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=SAyZ5BS6; 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="SAyZ5BS6" From: Ronald Claveau DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aliel.fr; s=courrier-s1; t=1775232563; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=SAyZ5BS6ofDHgKO5Xk9WYjes2SdJbc9K4lI60FGg8iSiHs3rpLoq17kwTNozDJyuz If4jOIeDyVgwt3MtN9agw2rXcEdeD3s2u1QFz4Sj+2USNT5p7p4ctgsAEsUJvlFKd6 mboKeduxKZfBJRTI7ECVtq8Rx4T9Hg5HVt4SZZlM= Date: Fri, 03 Apr 2026 18:08:41 +0200 Subject: [PATCH v2 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: <20260403-add-mcu-fan-khadas-vim4-v2-8-70536b22439a@aliel.fr> References: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@aliel.fr> In-Reply-To: <20260403-add-mcu-fan-khadas-vim4-v2-0-70536b22439a@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=1775232553; l=969; i=linux-kernel-dev@aliel.fr; s=id_ed25519; h=from:subject:message-id; bh=tWFcpje6b/UPuUaynpp5o+HzSsytJcZL6uVNyAgG8qQ=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgMGec55oxeeisqykQiUedekMYyOnR9 BG9E/7rDWyqdNoAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QOAWo0AXdyugOROWoSlCDGp6h3/kn2YUgjy+lYlw1HvW+UBcD6HSmxDdEPoGijEsoNllH5aBUmp MXW4iFX7LpQo= 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