[PATCH 1/4] dt-bindings: brige: lt9611c: add port-select property for LT9611C

[Mohit Dsor]

Add a new optional `lontium,port-select` property to describe the DSI
input port configuration for the LT9611C variant, which supports
single-port (A or B) and dual-port (A+B) operation.

This property allows explicitly selecting the active DSI input port(s):
  0 = port A (default)
  1 = port B
  2 = ports A and B (dual-port)

Signed-off-by: Mohit Dsor <mohit.dsor@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/display/bridge/lontium,lt9611.yaml  | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt9611.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt9611.yaml
index e0821a63d9d7..77220f893bf8 100644
--- a/Documentation/devicetree/bindings/display/bridge/lontium,lt9611.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt9611.yaml
@@ -41,6 +41,17 @@ properties:
   vcc-supply:
     description: Regulator for 3.3V IO power.
 
+  lontium,port-select:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+    default: 0
+    description: |
+      Selects which DSI input port(s) the bridge uses. Only relevant for
+      the lontium,lt9611c compatible.
+        0 = PORT_SELECT_A  - single DSI port A (default)
+        1 = PORT_SELECT_B  - single DSI port B
+        2 = PORT_SELECT_AB - dual DSI ports A and B
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -104,6 +115,8 @@ examples:
         vdd-supply = <&lt9611_1v8>;
         vcc-supply = <&lt9611_3v3>;
 
+        lontium,port-select = <1>;
+
         ports {
           #address-cells = <1>;
           #size-cells = <0>;

-- 
2.34.1