dt-bindings: display: bridge: lvds-transmitter: Absorb ti, ds90c185.txt

ti,ds90c185.txt documents LVDS encoders using the same driver
as the one documented by lvds-transmitter.yaml.
Since the properties listed in ti,ds90c185.txt are the same
as the ones listed in lvds-transmitter.yaml, absorb the dt-binding
into lvds-transmitter.yaml.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1573660292-10629-4-git-send-email-fabrizio.castro@bp.renesas.com

Documentation/devicetree/bindings/display/bridge/lvds-transmitter.yaml

@@ -31,11 +31,13 @@ description: |
 properties:
   compatible:
     description: |
-      Any encoder compatible with this generic binding, but with additional
-      properties not listed here, must define its own binding and list a device
-      specific compatible first followed by the generic compatible.
-    enum:
-      - lvds-encoder
+      Must list the device specific compatible string first, followed by the
+      generic compatible string.
+    items:
+      - enum:
+        - ti,ds90c185       # For the TI DS90C185 FPD-Link Serializer
+        - ti,ds90c187       # For the TI DS90C187 FPD-Link Serializer
+      - const: lvds-encoder # Generic LVDS encoder compatible fallback
 
   ports:
     type: object
@@ -69,7 +71,7 @@ required:
 examples:
   - |
     lvds-encoder {
-      compatible = "lvds-encoder";
+      compatible = "ti,ds90c185", "lvds-encoder";
 
       ports {
         #address-cells = <1>;

Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt

-Texas Instruments FPD-Link (LVDS) Serializer
---------------------------------------------
-
-The DS90C185 and DS90C187 are low-power serializers for portable
-battery-powered applications that reduces the size of the RGB
-interface between the host GPU and the display.
-
-Required properties:
-
-- compatible: Should be
-  "ti,ds90c185", "lvds-encoder"  for the TI DS90C185 FPD-Link Serializer
-  "ti,ds90c187", "lvds-encoder"  for the TI DS90C187 FPD-Link Serializer
-
-Optional properties:
-
-- powerdown-gpios: Power down control GPIO (the PDB pin, active-low)
-
-Required nodes:
-
-The devices have two video ports. Their connections are modeled using the OF
-graph bindings specified in Documentation/devicetree/bindings/graph.txt.
-
-- Video port 0 for parallel input
-- Video port 1 for LVDS output
-
-
-Example
--------
-
-lvds-encoder {
-	compatible = "ti,ds90c185", "lvds-encoder";
-
-	powerdown-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
-
-	ports {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		port@0 {
-			reg = <0>;
-
-			lvds_enc_in: endpoint {
-				remote-endpoint = <&lcdc_out_rgb>;
-			};
-		};
-
-		port@1 {
-			reg = <1>;
-
-			lvds_enc_out: endpoint {
-				remote-endpoint = <&lvds_panel_in>;
-			};
-		};
-	};
-};