media: dt-bindings: ti,ds90ub960: Refactor port definitions

The current bindings duplicate the port definitions for each FPD-Link RX
and CSI-2 TX ports. This results in a large amount of repeated schema
blocks and makes it harder to extend the bindings for new devices.

Refactor the bindings by introducing shared deftinitions for FPD-Link
input ports and CSI-2 output ports. No functional change intended.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@ti.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml

@@ -125,102 +125,35 @@ properties:
 
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
+    description:
+      Ports represent FPD-Link inputs to the deserializer and CSI TX outputs
+      from the deserializer. The number of ports is model-dependent.
 
     properties:
       port@0:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/FPDLink-input-port'
         description: FPD-Link input 0
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-            description:
-              Endpoint for FPD-Link port. If the RX mode for this port is RAW,
-              hsync-active and vsync-active must be defined.
-
       port@1:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/FPDLink-input-port'
         description: FPD-Link input 1
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-            description:
-              Endpoint for FPD-Link port. If the RX mode for this port is RAW,
-              hsync-active and vsync-active must be defined.
-
       port@2:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/FPDLink-input-port'
         description: FPD-Link input 2
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-            description:
-              Endpoint for FPD-Link port. If the RX mode for this port is RAW,
-              hsync-active and vsync-active must be defined.
-
       port@3:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/FPDLink-input-port'
         description: FPD-Link input 3
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-            description:
-              Endpoint for FPD-Link port. If the RX mode for this port is RAW,
-              hsync-active and vsync-active must be defined.
-
       port@4:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/CSI2-output-port'
         description: CSI-2 Output 0
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-
-            properties:
-              data-lanes:
-                minItems: 1
-                maxItems: 4
-              link-frequencies:
-                maxItems: 1
-
-            required:
-              - data-lanes
-              - link-frequencies
-
       port@5:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+        $ref: '#/$defs/CSI2-output-port'
         description: CSI-2 Output 1
 
-        properties:
-          endpoint:
-            $ref: /schemas/media/video-interfaces.yaml#
-            unevaluatedProperties: false
-
-            properties:
-              data-lanes:
-                minItems: 1
-                maxItems: 4
-              link-frequencies:
-                maxItems: 1
-
-            required:
-              - data-lanes
-              - link-frequencies
-
     required:
       - port@0
       - port@1
@@ -236,6 +169,41 @@ required:
   - clock-names
   - ports
 
+$defs:
+  FPDLink-input-port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    unevaluatedProperties: false
+    description: FPD-Link input
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+        description:
+          Endpoint for FPD-Link port. If the RX mode for this port is RAW,
+          hsync-active and vsync-active must be defined.
+
+  CSI2-output-port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    unevaluatedProperties: false
+    description: CSI-2 Output
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          data-lanes:
+            minItems: 1
+            maxItems: 4
+          link-frequencies:
+            maxItems: 1
+
+        required:
+          - data-lanes
+          - link-frequencies
+
 unevaluatedProperties: false
 
 examples: