[PATCH v3] dt-bindings: mxsfb: Document i.MX8M/i.MX6SX/i.MX6SL power-domains property

[Marek Vasut <marex@xxxxxxx>]

The power-domains property is mandatory on i.MX8M Mini, Nano, Plus
and i.MX6SX, i.MX6SL. Document the property and mark it as required
on the aforementioned variants of the IP, present in those SoCs.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
---
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: Liu Ying <victor.liu@xxxxxxx>
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
---
V2: - Add AB from Krzysztof
    - Add mx6sx power domain into the list
V3: - Update commit message
    - Add i.MX6SL
    - Update example
---
 .../devicetree/bindings/display/fsl,lcdif.yaml  | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index 876015a44a1e6..1f17be501749b 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 +90,19 @@ allOf:
           maxItems: 1
         clock-names:
           maxItems: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx6sl-lcdif
+              - fsl,imx6sx-lcdif
+              - fsl,imx8mm-lcdif
+              - fsl,imx8mn-lcdif
+              - fsl,imx8mp-lcdif
+    then:
+      required:
+        - power-domains
 
 examples:
   - |
@@ -101,6 +117,7 @@ examples:
                  <&clks IMX6SX_CLK_LCDIF_APB>,
                  <&clks IMX6SX_CLK_DISPLAY_AXI>;
         clock-names = "pix", "axi", "disp_axi";
+        power-domains = <&pd_disp>;
 
         port {
             endpoint {
-- 
2.35.1