[media] dt/bindings: Add bindings for OV5640

Add device tree binding documentation for the OV5640 camera sensor.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/i2c/ov5640.txt b/Documentation/devicetree/bindings/media/i2c/ov5640.txt
new file mode 100644 (file)
index 0000000..540b36c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ov5640.txt
@@ -0,0 +1,45 @@
+* Omnivision OV5640 MIPI CSI-2 sensor
+
+Required Properties:
+- compatible: should be "ovti,ov5640"
+- clocks: reference to the xclk input clock.
+- clock-names: should be "xclk".
+- DOVDD-supply: Digital I/O voltage supply, 1.8 volts
+- AVDD-supply: Analog voltage supply, 2.8 volts
+- DVDD-supply: Digital core voltage supply, 1.5 volts
+
+Optional Properties:
+- reset-gpios: reference to the GPIO connected to the reset pin, if any.
+              This is an active low signal to the OV5640.
+- powerdown-gpios: reference to the GPIO connected to the powerdown pin,
+                  if any. This is an active high signal to the OV5640.
+
+The device node must contain one 'port' child node for its digital output
+video port, in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+
+&i2c1 {
+       ov5640: camera@3c {
+               compatible = "ovti,ov5640";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_ov5640>;
+               reg = <0x3c>;
+               clocks = <&clks IMX6QDL_CLK_CKO>;
+               clock-names = "xclk";
+               DOVDD-supply = <&vgen4_reg>; /* 1.8v */
+               AVDD-supply = <&vgen3_reg>;  /* 2.8v */
+               DVDD-supply = <&vgen2_reg>;  /* 1.5v */
+               powerdown-gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
+               reset-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+
+               port {
+                       ov5640_to_mipi_csi2: endpoint {
+                               remote-endpoint = <&mipi_csi2_from_ov5640>;
+                               clock-lanes = <0>;
+                               data-lanes = <1 2>;
+                       };
+               };
+       };
+};