[PATCH 06/13] dt-bindings: media: ov5640: Require ep properties

[Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>]

Now that the bus-type property has been made mandatory for
the ov5640 bindings, use the property value to mark endpoint
properties as required depending on the data interface in use.

Mark as 'required' all the properties that were defined as required
in the original bindings in textual form. Adjust the example to
comply with validation requirement but do not update the existing
users as most of the required properties will be demoted in the
next patches.

Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
---
 .../devicetree/bindings/media/i2c/ov5640.yaml | 41 +++++++++++++++++--
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/ov5640.yaml b/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
index 16e6c2dc629a..8fd54575a1db 100644
--- a/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
@@ -110,9 +110,40 @@ properties:
           pclk-sample:
             enum: [0, 1]
 
-        required:
-          - remote-endpoint
-          - bus-type
+        allOf:
+          - if:
+              properties:
+                bus-type:
+                  const: 4
+            then:
+                properties:
+                  bus-width: false
+                  data-shift: false
+                  hsync-active: false
+                  vsync-active: false
+                  pclk-sample: false
+                required:
+                  - remote-endpoint
+                  - bus-type
+                  - clock-lanes
+                  - data-lanes
+
+          - if:
+              properties:
+                bus-type:
+                  const: 5
+            then:
+              properties:
+                clock-lanes: false
+                data-lanes: false
+              required:
+                - remote-endpoint
+                - bus-type
+                - bus-width
+                - data-shift
+                - hsync-active
+                - vsync-active
+                - pclk-sample
 
     additionalProperties: false
 
@@ -179,6 +210,10 @@ examples:
                     remote-endpoint = <&parallel_from_ov5640>;
                     bus-type = <5>;
                     bus-width = <10>;
+                    data-shift = <0>;
+                    hsync-active = <1>;
+                    vsync-active = <1>;
+                    pclk-sample = <1>;
                 };
             };
         };
-- 
2.27.0