[PATCH v10 1/3] dt-bindings: media: mediatek-jpeg-decoder: add MT8189 compatible string

[Jianhua Lin <jianhua.lin@mediatek.com>]

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.

Signed-off-by: Jianhua Lin <jianhua.lin@mediatek.com>
---
 .../bindings/media/mediatek-jpeg-decoder.yaml | 50 ++++++++++++++++---
 1 file changed, 42 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..654360c19c48 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 +32,16 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 1
     maxItems: 2
-    minItems: 2
 
   clock-names:
-    items:
-      - const: jpgdec-smi
-      - const: jpgdec
+    oneOf:
+      - items:
+          - const: jpgdec
+      - items:
+          - const: jpgdec-smi
+          - const: jpgdec
 
   power-domains:
     maxItems: 1
@@ -51,6 +54,15 @@ properties:
       Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
       Ports are according to the HW.
 
+  mediatek,larb:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: |
+      A phandle to the local arbiter (SMI LARB) node. This explicitly
+      describes the hardware topology where the JPEG block is connected
+      to a dedicated SMI LARB for memory bandwidth arbitration. It is
+      required to accurately represent the hardware connection independently
+      of the IOMMU.
+
 required:
   - compatible
   - reg
@@ -60,6 +72,28 @@ required:
   - power-domains
   - iommus
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mediatek,mt8189-jpgdec
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+      required:
+        - mediatek,larb
+    else:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+        mediatek,larb: false
+
 additionalProperties: false
 
 examples:
-- 
2.45.2