[PATCH v3 1/2] dt-bindings: samsung,mipi-dsim: Add 'lane-polarities'

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

The Samsung DSIM IP block allows the inversion of the clock and
data lanes.

Add an optional property called 'lane-polarities' that describes the
polarities of the MIPI DSI clock and data lanes.

This property is useful for properly describing the hardware when the
board designer decided to switch the polarities of the MIPI DSI
clock and/or data lanes.

Signed-off-by: Fabio Estevam <festevam@denx.de>
---
Changes since v2:
- Use video-interfaces.yaml (Rob).

 .../display/bridge/samsung,mipi-dsim.yaml     | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
index e841659e20cd..dad6d06fbdd9 100644
--- a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
@@ -105,6 +105,35 @@ properties:
           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:
+                oneOf:
+                  - minItems: 1
+                    maxItems: 4
+                    uniqueItems: true
+                    items:
+                      enum: [ 1, 2, 3, 4 ]
+                    description:
+                      See ../../media/video-interfaces.yaml for details.
+
+              lane-polarities:
+                minItems: 1
+                maxItems: 5
+                items:
+                  enum: [ 0, 1 ]
+                description:
+                  See ../../media/video-interfaces.yaml for details.
+                  The Samsung MIPI DSI IP requires that all the data lanes have
+                  the same polarity.
+
+            dependencies:
+              lane-polarities: [data-lanes]
+
 required:
   - clock-names
   - clocks
-- 
2.34.1