[PATCH] dt-bindings: mxsfb: Document i.MX8M power-domains property

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The power-domains property is mandatory on i.MX8M Mini, Nano, Plus.
Document the property and mark it as required on the aforementioned
variants of the IP, present in those SoCs.

Signed-off-by: Marek Vasut <marex@xxxxxxx>
---
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: NXP Linux Team <linux-imx@xxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
To: devicetree@xxxxxxxxxxxxxxx
---
 .../devicetree/bindings/display/fsl,lcdif.yaml     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index 876015a44a1e6..31847efedd8f9 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -52,6 +52,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
   port:
     $ref: /schemas/graph.yaml#/properties/port
     description: The LCDIF output port
@@ -87,6 +90,17 @@ allOf:
           maxItems: 1
         clock-names:
           maxItems: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8mm-lcdif
+              - fsl,imx8mn-lcdif
+              - fsl,imx8mp-lcdif
+    then:
+      required:
+        - power-domains
 
 examples:
   - |
-- 
2.35.1




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