media: dt-bindings: media: Add bindings for OV2685

Add device tree binding documentation for the OV2685 sensor.

Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/i2c/ov2685.txt b/Documentation/devicetree/bindings/media/i2c/ov2685.txt
new file mode 100644 (file)
index 0000000..625c4a8
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+++ b/Documentation/devicetree/bindings/media/i2c/ov2685.txt
@@ -0,0 +1,41 @@
+* Omnivision OV2685 MIPI CSI-2 sensor
+
+Required Properties:
+- compatible: shall be "ovti,ov2685"
+- clocks: reference to the xvclk input clock
+- clock-names: shall be "xvclk"
+- avdd-supply: Analog voltage supply, 2.8 volts
+- dovdd-supply: Digital I/O voltage supply, 1.8 volts
+- dvdd-supply: Digital core voltage supply, 1.8 volts
+- reset-gpios: Low active reset gpio
+
+The device node shall contain one 'port' child node with an
+'endpoint' subnode for its digital output video port,
+in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+The endpoint optional property 'data-lanes' shall be "<1>".
+
+Example:
+&i2c7 {
+       ov2685: camera-sensor@3c {
+               compatible = "ovti,ov2685";
+               reg = <0x3c>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&clk_24m_cam>;
+
+               clocks = <&cru SCLK_TESTCLKOUT1>;
+               clock-names = "xvclk";
+
+               avdd-supply = <&pp2800_cam>;
+               dovdd-supply = <&pp1800>;
+               dvdd-supply = <&pp1800>;
+               reset-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
+
+               port {
+                       ucam_out: endpoint {
+                               remote-endpoint = <&mipi_in_ucam>;
+                               data-lanes = <1>;
+                       };
+               };
+       };
+};