dt-bindings: display: mediatek: dpi: correct power-domains property

The MediaTek DPI module is typically associated with one of the
following multimedia power domains:
 - POWER_DOMAIN_DISPLAY
 - POWER_DOMAIN_VDOSYS
 - POWER_DOMAIN_MM
The specific power domain used varies depending on the SoC design.

These power domains are shared by multiple devices within the SoC.
In most cases, these power domains are enabled by other devices.
As a result, the DPI module of legacy SoCs often functions correctly
even without explicit configuration.

It is recommended to explicitly add the appropriate power domain
property to the DPI node in the device tree. Hence drop the
compatible checking for specific SoCs.

Fixes: 5474d49b2f79 ("dt-bindings: display: mediatek: dpi: Add power domains")
Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Pablo Sun <pablo.sun@mediatek.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20241003030919.17980-4-macpaul.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
index 3a82aec9021c7c5aec74c2f961817cc7b2a24a80..497c0eb4ed0b5e2f57f60859f56a1a42fed4f40d 100644 (file)
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
@@ -63,6 +63,16 @@ properties:
       - const: sleep
 
   power-domains:
+    description: |
+      The MediaTek DPI module is typically associated with one of the
+      following multimedia power domains:
+        POWER_DOMAIN_DISPLAY
+        POWER_DOMAIN_VDOSYS
+        POWER_DOMAIN_MM
+      The specific power domain used varies depending on the SoC design.
+
+      It is recommended to explicitly add the appropriate power domain
+      property to the DPI node in the device tree.
     maxItems: 1
 
   port:
@@ -79,20 +89,6 @@ required:
   - clock-names
   - port
 
-allOf:
-  - if:
-      not:
-        properties:
-          compatible:
-            contains:
-              enum:
-                - mediatek,mt6795-dpi
-                - mediatek,mt8173-dpi
-                - mediatek,mt8186-dpi
-    then:
-      properties:
-        power-domains: false
-
 additionalProperties: false
 
 examples: