[PATCH v2 1/1] dt-bindings: display: nwl-dsi: Allow 'data-lanes' property for port@1

[Frank Li]

This controller support scalable data lanes from 1 to 4. Add the
'data-lanes' property to configure the number of MIPI display panel lanes
selected for boards.

Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
property referencing video-interfaces.yaml. Allow 'data-lanes' values
1, 2, 3, and 4 for port@1.

Fix below CHECK_DTB warnings:
arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
 dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
Change from v1 to v2
- Add the reason why need 'data-lanes' property in commit message.
---
 .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
index 350fb8f400f02..5952e6448ed47 100644
--- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
@@ -111,11 +111,27 @@ properties:
         unevaluatedProperties: false
 
       port@1:
-        $ref: /schemas/graph.yaml#/properties/port
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
         description:
           DSI output port node to the panel or the next bridge
           in the chain
 
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description: array of physical DSI data lane indexes.
+                minItems: 1
+                items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+
     required:
       - port@0
       - port@1
-- 
2.34.1