MLK-18789-2: drm/bridge: Add driver for legacy Freescale Seiko 43WVFIG adapter

This is an adapter card made for the 4.3", 800x480, LCD panel Seiko
43WVFIG. The LCD panel is a 24bit DPI bus, while the adapter card has
two ports: 18-bit and 24-bit data input. For the 18-bit data input, the
adapter card is demuxing some of the data lines, in order to feed all of
the 24 lines needed by the LCD.
This driver handles both this use-cases.

Signed-off-by: Robert Chiras <robert.chiras@nxp.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/display/bridge/nxp,seiko-43wvfig.txt b/Documentation/devicetree/bindings/display/bridge/nxp,seiko-43wvfig.txt
new file mode 100644
index 000000000000..9021e6ad9299
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/nxp,seiko-43wvfig.txt
@@ -0,0 +1,40 @@
+Legacy Freescale RA169Z20 adapter card for Seiko 43WVFIG panel, driver bindings
+
+This is an adapter card made for the 4.3", 800x480, LCD panel Seiko 43WVFIG.
+The LCD panel is a 24bit DPI bus, while the adapter card has two ports:
+18-bit and 24-bit data input. For the 18-bit data input, the adapter card
+is demuxing some of the data lines, in order to feed all of the 24 lines
+needed by the LCD.
+
+Required properties:
+- compatible: 	"nxp,seiko-43wvfig"
+- bus_mode:	must be one of <18> or <24>, depending on the input port
+		used (18-bit or 24-bit)
+- port:		input and output port nodes with endpoint definitions as
+		defined in Documentation/devicetree/bindings/graph.txt;
+		the input port should be connected to an lcd controller
+		while the output port should be connected to the Seiko
+		43wvfig LCD panel
+
+Example:
+	seiko_adapter: seiko-adapter {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nxp,seiko-43wvfig";
+		bus_mode = <18>;
+
+		port@0 {
+			reg = <0>;
+			adapter_in: endpoint {
+				remote-endpoint = <&lcdif_out>;
+			};
+		};
+		port@1 {
+			reg = <1>;
+			adapter_out: endpoint {
+				remote-endpoint = <&panel_in>;
+			};
+		};
+	};
+
+-