[media] ov7670: document device tree bindings

Add binding documentation and add that file to the MAINTAINERS entry.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/i2c/ov7670.txt b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
new file mode 100644 (file)
index 0000000..826b656
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
@@ -0,0 +1,43 @@
+* Omnivision OV7670 CMOS sensor
+
+The Omnivision OV7670 sensor supports multiple resolutions output, such as
+CIF, SVGA, UXGA. It also can support the YUV422/420, RGB565/555 or raw RGB
+output formats.
+
+Required Properties:
+- compatible: should be "ovti,ov7670"
+- clocks: reference to the xclk input clock.
+- clock-names: should be "xclk".
+
+Optional Properties:
+- reset-gpios: reference to the GPIO connected to the resetb pin, if any.
+  Active is low.
+- powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
+  Active is high.
+
+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: i2c@f0018000 {
+               ov7670: camera@21 {
+                       compatible = "ovti,ov7670";
+                       reg = <0x21>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
+                       reset-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
+                       powerdown-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
+                       clocks = <&pck0>;
+                       clock-names = "xclk";
+                       assigned-clocks = <&pck0>;
+                       assigned-clock-rates = <25000000>;
+
+                       port {
+                               ov7670_0: endpoint {
+                                       remote-endpoint = <&isi_0>;
+                               };
+                       };
+               };
+       };

diff --git a/MAINTAINERS b/MAINTAINERS
index 1f1d1038047aaff9357b3d84850c322f4dc8fb8b..7772b351a4fe46b728e0e4d2e96c9850ac8e832a 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9272,6 +9272,7 @@ L:        linux-media@vger.kernel.org
 T:     git git://linuxtv.org/media_tree.git
 S:     Maintained
 F:     drivers/media/i2c/ov7670.c
+F:     Documentation/devicetree/bindings/media/i2c/ov7670.txt
 
 ONENAND FLASH DRIVER
 M:     Kyungmin Park <kyungmin.park@samsung.com>