media: ov9650: add device tree binding

Now the ov9650 driver supports device tree probing.  So this adds a
device tree binding documentation.

Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Jacopo Mondi <jacopo@jmondi.org>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Hugues Fruchet <hugues.fruchet@st.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.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/ov9650.txt b/Documentation/devicetree/bindings/media/i2c/ov9650.txt
new file mode 100644 (file)
index 0000000..506dfc5
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ov9650.txt
@@ -0,0 +1,36 @@
+* Omnivision OV9650/OV9652 CMOS sensor
+
+Required Properties:
+- compatible: shall be one of
+       "ovti,ov9650"
+       "ovti,ov9652"
+- clocks: reference to the xvclk input clock.
+
+Optional Properties:
+- reset-gpios: reference to the GPIO connected to the resetb pin, if any.
+  Active is high.
+- powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
+  Active is high.
+
+The device node shall contain one 'port' child node with one child 'endpoint'
+subnode for its digital output video port, in accordance with the video
+interface bindings defined in Documentation/devicetree/bindings/media/
+video-interfaces.txt.
+
+Example:
+
+&i2c0 {
+       ov9650: camera@30 {
+               compatible = "ovti,ov9650";
+               reg = <0x30>;
+               reset-gpios = <&axi_gpio_0 0 GPIO_ACTIVE_HIGH>;
+               powerdown-gpios = <&axi_gpio_0 1 GPIO_ACTIVE_HIGH>;
+               clocks = <&xclk>;
+
+               port {
+                       ov9650_0: endpoint {
+                               remote-endpoint = <&vcap1_in0>;
+                       };
+               };
+       };
+};

diff --git a/MAINTAINERS b/MAINTAINERS
index cfd5efa4b205661d59adc74868f6dfbe7394068b..fdbcf13e97fab10da4b88a78a87fa6b2829175a6 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10224,6 +10224,7 @@ L:      linux-media@vger.kernel.org
 T:     git git://linuxtv.org/media_tree.git
 S:     Maintained
 F:     drivers/media/i2c/ov9650.c
+F:     Documentation/devicetree/bindings/media/i2c/ov9650.txt
 
 ONENAND FLASH DRIVER
 M:     Kyungmin Park <kyungmin.park@samsung.com>