From 39dd85d9246ecf880aeea165f594c81c50afaabf Mon Sep 17 00:00:00 2001 From: Ronald Claveau Date: Tue, 21 Apr 2026 13:49:18 +0200 Subject: [PATCH] dt-bindings: mfd: khadas: Add new compatible for Khadas VIM4 MCU 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 Acked-by: Conor Dooley Link: https://patch.msgid.link/20260421-add-mcu-fan-khadas-vim4-v4-1-447114a28f2d@aliel.fr Signed-off-by: Lee Jones --- .../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 084960fd5a1f..1f135618e3b6 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: