From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The MAX9286 deserializes video data received on up to 4 Gigabit
Multimedia Serial Links (GMSL) and outputs them on a CSI-2 port using up
to 4 data lanes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

---
v3:
 - Update binding descriptions

v4:
 - Define the use of a CSI2 D-PHY
 - Rename pwdn-gpios to enable-gpios (with inverted polarity)
 - Remove clock-lanes mapping support
 - rewrap text blocks
 - Fix typos
---
 .../bindings/media/i2c/maxim,max9286.txt      | 182 ++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt

diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt
new file mode 100644
index 000000000000..672f6a4d417d
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt

@@ -0,0 +1,182 @@
+Maxim Integrated Quad GMSL Deserializer
+---------------------------------------
+
+The MAX9286 deserializer receives video data on up to 4 Gigabit Multimedia
+Serial Links (GMSL) and outputs them on a CSI-2 D-PHY port using up to 4 data
+lanes.
+
+In addition to video data, the GMSL links carry a bidirectional control channel
+that encapsulates I2C messages. The MAX9286 forwards all I2C traffic not
+addressed to itself to the other side of the links, where a GMSL serializer
+will output it on a local I2C bus. In the other direction all I2C traffic
+received over GMSL by the MAX9286 is output on the local I2C bus.
+
+Required Properties:
+
+- compatible: Shall be "maxim,max9286"
+- reg: I2C device address
+
+Optional Properties:
+
+- poc-supply: Regulator providing Power over Coax to the cameras
+- enable-gpios: GPIO connected to the #PWDN pin with inverted polarity
+
+Required endpoint nodes:
+-----------------------
+
+The connections to the MAX9286 GMSL and its endpoint nodes are modeled using
+the OF graph bindings in accordance with the video interface bindings defined
+in Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+The following table lists the port number corresponding to each device port.
+
+        Port            Description
+        ----------------------------------------
+        Port 0          GMSL Input 0
+        Port 1          GMSL Input 1
+        Port 2          GMSL Input 2
+        Port 3          GMSL Input 3
+        Port 4          CSI-2 Output
+
+Optional Endpoint Properties for GMSL Input Ports (Port [0-3]):
+
+- remote-endpoint: phandle to the remote GMSL source endpoint subnode in the
+  remote node port.
+
+Required Endpoint Properties for CSI-2 Output Port (Port 4):
+
+- remote-endpoint: phandle to the remote CSI-2 sink endpoint node.
+- data-lanes: array of physical CSI-2 data lane indexes.
+
+Required i2c-mux nodes:
+----------------------
+
+Each GMSL link is modeled as a child bus of an i2c bus multiplexer/switch, in
+accordance with bindings described in
+Documentation/devicetree/bindings/i2c/i2c-mux.txt. The serializer device on the
+remote end of the GMSL link shall be modelled as a child node of the
+corresponding I2C bus.
+
+Required i2c child bus properties:
+- all properties described as required i2c child bus nodes properties in
+  Documentation/devicetree/bindings/i2c/i2c-mux.txt.
+
+Example:
+-------
+
+	gmsl-deserializer@2c {
+		compatible = "maxim,max9286";
+		reg = <0x2c>;
+		poc-supply = <&camera_poc_12v>;
+		enable-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;