From: Ronald Claveau via B4 Relay <devnull+linux-kernel-dev.aliel.fr@kernel.org>
To: Neil Armstrong <neil.armstrong@linaro.org>,
Lee Jones <lee@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Andi Shyti <andi.shyti@kernel.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Beniamino Galvani <b.galvani@gmail.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Daniel Lezcano <daniel.lezcano@kernel.org>,
Zhang Rui <rui.zhang@intel.com>,
Lukasz Luba <lukasz.luba@arm.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>
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 <linux-kernel-dev@aliel.fr>,
Conor Dooley <conor.dooley@microchip.com>
Subject: [PATCH v8 1/8] dt-bindings: mfd: khadas: Add new compatible for Khadas VIM4 MCU
Date: Thu, 02 Jul 2026 11:55:54 +0200 [thread overview]
Message-ID: <20260702-add-mcu-fan-khadas-vim4-v8-1-244feee91a36@aliel.fr> (raw)
In-Reply-To: <20260702-add-mcu-fan-khadas-vim4-v8-0-244feee91a36@aliel.fr>
From: Ronald Claveau <linux-kernel-dev@aliel.fr>
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 <conor.dooley@microchip.com>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
---
Documentation/devicetree/bindings/mfd/khadas,mcu.yaml | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml b/Documentation/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
"#cooling-cells": # Only needed for boards having FAN control feature
const: 2
@@ -25,10 +26,27 @@ properties:
reg:
maxItems: 1
+ fan-supply:
+ description: Phandle to the regulator that powers the fan.
+ $ref: /schemas/types.yaml#/definitions/phandle
+
required:
- compatible
- reg
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: khadas,vim4-mcu
+ then:
+ required:
+ - fan-supply
+ else:
+ properties:
+ fan-supply: false
+
additionalProperties: false
examples:
--
2.49.0
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next prev parent reply other threads:[~2026-07-02 9:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-02 9:55 [PATCH v8 0/8] Add VIM4 MCU/FAN support Ronald Claveau via B4 Relay
2026-07-02 9:55 ` Ronald Claveau via B4 Relay [this message]
2026-07-02 9:55 ` [PATCH v8 2/8] dt-bindings: i2c: amlogic: Add compatible for T7 SOC Ronald Claveau via B4 Relay
2026-07-02 9:55 ` [PATCH v8 3/8] mfd: khadas-mcu: Add per-variant configuration infrastructure and VIM4 support Ronald Claveau via B4 Relay
2026-07-02 9:55 ` [PATCH v8 4/8] mfd: khadas-mcu: Add support for VIM4 MCU variant Ronald Claveau via B4 Relay
2026-07-02 9:55 ` [PATCH v8 5/8] thermal: khadas-mcu-fan: Add fan config from platform data Add regulator support Ronald Claveau via B4 Relay
2026-07-02 9:55 ` [PATCH v8 6/8] arm64: dts: amlogic: t7: Add i2c pinctrl node Ronald Claveau via B4 Relay
2026-07-02 9:56 ` [PATCH v8 7/8] arm64: dts: amlogic: t7: Add i2c controller node Ronald Claveau via B4 Relay
2026-07-07 19:43 ` Martin Blumenstingl
2026-07-02 9:56 ` [PATCH v8 8/8] arm64: dts: amlogic: t7: khadas-vim4: Add i2c MCU fan node Ronald Claveau via B4 Relay
2026-07-07 19:44 ` Martin Blumenstingl
2026-07-08 13:42 ` [PATCH v8 0/8] Add VIM4 MCU/FAN support Daniel Lezcano
2026-07-16 15:24 ` Lee Jones
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