media: dt-bindings: media: sun6i-a31-csi: Add internal output port to the ISP

Some Allwinner devices come with an Image Signal Processor (ISP) that
allows processing camera data to produce good-looking images,
especially from raw bayer representations.

The ISP does not have a dedicated capture path: it is fed directly by
one of the CSI controllers, which can be selected at run-time.

Represent this possibility as a graph connection between the CSI
controller and the ISP in the device-tree bindings.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml
index f1ccca35a79034d9b7c794dc1ff6f5eed3ce9d19..b3d6db9226937090af558a84eb9f3bd142bead39 100644 (file)
--- a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml
+++ b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml
@@ -73,6 +73,10 @@ properties:
         $ref: /schemas/graph.yaml#/properties/port
         description: MIPI CSI-2 bridge input port
 
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Internal output port to the ISP
+
     anyOf:
       - required:
           - port@0