[PATCH v3] media: dt-bindings: ovti,ov2680: Document more properties

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

OV2680 has a single data lane MIPI interface.

Document the clock-lanes and data-lanes properties to avoid
the following dt-schema warning:

imx7s-warp.dtb: camera@36: port:endpoint: Unevaluated properties are not allowed ('clock-lanes', 'data-lanes' were unexpected)
	from schema $id: http://devicetree.org/schemas/media/i2c/ovti,ov2680.yaml#

While at it, also document the link-frequencies property as recommended
by the following document:

https://www.kernel.org/doc/html/v6.9-rc1/driver-api/media/camera-sensor.html#handling-clocks

Signed-off-by: Fabio Estevam <festevam@denx.de>
---
Changes since v2:
- Use additionalProperties: false (Laurent).
- Mark link-frequencies as mandatory. (Laurent).

 .../bindings/media/i2c/ovti,ov2680.yaml       | 25 ++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml
index cf456f8d9ddc..6ae7d4457536 100644
--- a/Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml
@@ -50,9 +50,29 @@ properties:
       Definition of the regulator used as digital power supply.
 
   port:
-    $ref: /schemas/graph.yaml#/properties/port
     description:
       A node containing an output port node.
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        additionalProperties: false
+
+        properties:
+          clock-lanes:
+            const: 0
+
+          data-lanes:
+            const: 1
+
+          link-frequencies: true
+
+          remote-endpoint: true
+
+        required:
+          - link-frequencies
 
 required:
   - compatible
@@ -89,6 +109,9 @@ examples:
                 port {
                         ov2680_to_mipi: endpoint {
                                 remote-endpoint = <&mipi_from_sensor>;
+                                clock-lanes = <0>;
+                                data-lanes = <1>;
+                                link-frequencies = /bits/ 64 <330000000>;
                         };
                 };
         };
-- 
2.34.1