[PATCH v4 1/8] dt-bindings: mfd: khadas: Add new compatible for Khadas VIM4 MCU

[Ronald Claveau via B4 Relay]

From: Ronald Claveau <linux-kernel-dev at 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.

Signed-off-by: Ronald Claveau <linux-kernel-dev at 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