dt-bindings: display: bridge: Add Chipone ICN6211 bindings

ICN6211 is MIPI-DSI to RGB Converter bridge from Chipone.

It has a flexible configuration of MIPI DSI signal input and
produces RGB565, RGB666, RGB888 output format.

Add dt-bingings for it.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322103328.66442-1-jagan@amarulasolutions.com

Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/chipone,icn6211.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Chipone ICN6211 MIPI-DSI to RGB Converter bridge
+
+maintainers:
+  - Jagan Teki <jagan@amarulasolutions.com>
+
+description: |
+  ICN6211 is MIPI-DSI to RGB Converter bridge from chipone.
+
+  It has a flexible configuration of MIPI DSI signal input and
+  produce RGB565, RGB666, RGB888 output format.
+
+properties:
+  compatible:
+    enum:
+      - chipone,icn6211
+
+  reg:
+    maxItems: 1
+    description: virtual channel number of a DSI peripheral
+
+  enable-gpios:
+    description: Bridge EN pin, chip is reset when EN is low.
+
+  vdd1-supply:
+    description: A 1.8V/2.5V/3.3V supply that power the MIPI RX.
+
+  vdd2-supply:
+    description: A 1.8V/2.5V/3.3V supply that power the PLL.
+
+  vdd3-supply:
+    description: A 1.8V/2.5V/3.3V supply that power the RGB output.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Video port for MIPI DSI input
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Video port for MIPI DPI output (panel or connector).
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - enable-gpios
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      bridge@0 {
+        compatible = "chipone,icn6211";
+        reg = <0>;
+        enable-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* LCD-RST: PL5 */
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            bridge_in_dsi: endpoint {
+              remote-endpoint = <&dsi_out_bridge>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+
+            bridge_out_panel: endpoint {
+              remote-endpoint = <&panel_out_bridge>;
+            };
+          };
+        };
+      };
+    };

MAINTAINERS

@@ -5568,6 +5568,11 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/boe,himax8279d.yaml
 F:	drivers/gpu/drm/panel/panel-boe-himax8279d.c
 
+DRM DRIVER FOR CHIPONE ICN6211 MIPI-DSI to RGB CONVERTER BRIDGE
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml
+
 DRM DRIVER FOR FARADAY TVE200 TV ENCODER
 M:	Linus Walleij <linus.walleij@linaro.org>
 S:	Maintained