media: dt-bindings: media: renesas,vsp1: Document RZ/G2L VSPD bindings

Document VSPD found in RZ/G2L SoC. VSPD block is similar to VSP2-D
found on R-Car SoC's, but it does not have a version register and
it has 3 clocks compared to 1 clock on vsp1 and vsp2.

This patch introduces a new compatible 'renesas,r9a07g044-vsp2' to
handle these differences.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/renesas,vsp1.yaml

@@ -17,6 +17,7 @@ description:
 properties:
   compatible:
     enum:
+      - renesas,r9a07g044-vsp2 # RZ/G2L
       - renesas,vsp1 # R-Car Gen2 and RZ/G1
       - renesas,vsp2 # R-Car Gen3 and RZ/G2
 
@@ -26,8 +27,8 @@ properties:
   interrupts:
     maxItems: 1
 
-  clocks:
-    maxItems: 1
+  clocks: true
+  clock-names: true
 
   power-domains:
     maxItems: 1
@@ -50,18 +51,44 @@ required:
 
 additionalProperties: false
 
-if:
+allOf:
+  - if:
       properties:
         compatible:
-      items:
-        - const: renesas,vsp1
-then:
+          contains:
+            const: renesas,vsp1
+    then:
       properties:
         renesas,fcp: false
-else:
+    else:
       required:
         - renesas,fcp
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a07g044-vsp2
+    then:
+      properties:
+        clocks:
+          items:
+            - description: Main clock
+            - description: Register access clock
+            - description: Video clock
+        clock-names:
+          items:
+            - const: aclk
+            - const: pclk
+            - const: vclk
+      required:
+        - clock-names
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names: false
+
 examples:
   # R8A7790 (R-Car H2) VSP1-S
   - |