media: dt-bindings: media: amlogic,gx-vdec: add bindings for G12A family

Add bindings to support the Amlogic Video Decoder on the Amlogic G12A
family.

For the G12A family, a supplementary clock is needed to operate the
HEVC/VP9 decoder.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml

@@ -27,12 +27,15 @@ description: |
 
 properties:
   compatible:
-    items:
+    oneOf:
+      - items:
+        - enum:
+          - amlogic,gxbb-vdec # GXBB (S905)
+          - amlogic,gxl-vdec # GXL (S905X, S905D)
+          - amlogic,gxm-vdec # GXM (S912)
+        - const: amlogic,gx-vdec
       - enum:
-        - amlogic,gxbb-vdec # GXBB (S905)
-        - amlogic,gxl-vdec # GXL (S905X, S905D)
-        - amlogic,gxm-vdec # GXM (S912)
-      - const: amlogic,gx-vdec
+        - amlogic,g12a-vdec # G12A (S905X2, S905D2)
 
   interrupts:
     minItems: 2
@@ -59,13 +62,17 @@ properties:
 
   clocks:
     minItems: 4
+    maxItems: 5
 
   clock-names:
+    minItems: 4
+    maxItems: 5
     items:
       - const: dos_parser
       - const: dos
       - const: vdec_1
       - const: vdec_hevc
+      - const: vdec_hevcf
 
   amlogic,ao-sysctrl:
     description: should point to the AOBUS sysctrl node
@@ -77,6 +84,31 @@ properties:
     allOf:
       - $ref: /schemas/types.yaml#/definitions/phandle
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,gx-vdec
+
+    then:
+      properties:
+        clock-names:
+          maxItems: 4
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,g12a-vdec
+
+    then:
+      properties:
+        clock-names:
+          minItems: 5
+
 required:
   - compatible
   - reg