[PATCH v5 1/3] dt-bindings: media: mediatek-jpeg-decoder: add MT8189 compatible string

[Jianhua Lin]

Add the compatible string for the JPEG decoder block found in the
MediaTek MT8189 SoC.

Compared to previous generation ICs, the MT8189 JPEG decoder requires
34-bit IOVA address space support and only needs a single clock
("jpgdec") instead of two. Therefore, it is added as a standalone
compatible string without falling back to older SoCs.

Update the binding schema to include the new compatible string and add
an `allOf` block with conditional checks. This enforces the single clock
requirement for MT8189 while preserving the two-clock requirement
("jpgdec-smi", "jpgdec") for older SoCs.

Suggested-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Jianhua Lin <jianhua.lin@xxxxxxxxxxxx>
---
 .../bindings/media/mediatek-jpeg-decoder.yaml | 44 +++++++++++++++----
 1 file changed, 36 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/mediatek-jpeg-decoder.yaml b/Documentation/devicetree/bindings/media/mediatek-jpeg-decoder.yaml
index a4aacd3eb189..601fe05b73e7 100644
--- a/Documentation/devicetree/bindings/media/mediatek-jpeg-decoder.yaml
+++ b/Documentation/devicetree/bindings/media/mediatek-jpeg-decoder.yaml
@@ -15,10 +15,10 @@ description: |-
 properties:
   compatible:
     oneOf:
-      - items:
-          - enum:
-              - mediatek,mt8173-jpgdec
-              - mediatek,mt2701-jpgdec
+      - enum:
+          - mediatek,mt2701-jpgdec
+          - mediatek,mt8173-jpgdec
+          - mediatek,mt8189-jpgdec
       - items:
           - enum:
               - mediatek,mt7623-jpgdec
@@ -32,13 +32,22 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 1
     maxItems: 2
-    minItems: 2
 
   clock-names:
-    items:
-      - const: jpgdec-smi
-      - const: jpgdec
+    minItems: 1
+    maxItems: 2
+    oneOf:
+      - items:
+          - const: jpgdec
+      - items:
+          - const: jpgdec-smi
+          - const: jpgdec
+
+  mediatek,larb:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: a phandle to the smi_larb node.
 
   power-domains:
     maxItems: 1
@@ -60,6 +69,25 @@ required:
   - power-domains
   - iommus
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mediatek,mt8189-jpgdec
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+    else:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+
 additionalProperties: false
 
 examples:
-- 
2.45.2