[PATCH v2 02/20] dt-bindings: media: imx355: Allow 2 CSI2 data lane output

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

The sensor supports output over either 2 or 4 CSI2 data
lanes. The binding only permitted the 4 lane configuration.

Add the 2 lane configuration as an option.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

---
The original bindings just used minItems and maxItems which implies
that lane reordering is supported on the sensor and that the lanes
can be entered in any order. This isn't the case as lane reordering
isn't supported.

If this change counts as breaking the binding, then is minItems: 2,
maxItems: 4 the best that can be achieved which leaves 3 permitted
but invalid? Or is there a better syntax?
---
 Documentation/devicetree/bindings/media/i2c/sony,imx355.yaml | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/sony,imx355.yaml b/Documentation/devicetree/bindings/media/i2c/sony,imx355.yaml
index 6050d7e7dcfe..d9cdfda699bf 100644
--- a/Documentation/devicetree/bindings/media/i2c/sony,imx355.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/sony,imx355.yaml
@@ -50,8 +50,15 @@ properties:
 
         properties:
           data-lanes:
-            minItems: 4
-            maxItems: 4
+            oneOf:
+              - items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+              - items:
+                  - const: 1
+                  - const: 2
 
         required:
           - link-frequencies

-- 
2.34.1