[PATCH v2 2/2] media: ov7740: Document device tree bindings

[Yang, Wenyou]

Hi Sakari,

Thank you very much for your review and advice.

I will send a new version to fix it.

On 2017/10/27 18:59, Sakari Ailus wrote:
> Hi Wenyou,
>
> On Fri, Oct 27, 2017 at 03:42:20PM +0800, Wenyou Yang wrote:
>> Add the device tree binding documentation for ov7740 driver and
>> add a new entry of ov7740 to the MAINTAINERS file.
>>
>> Signed-off-by: Wenyou Yang <wenyou.yang at microchip.com>
>> ---
>>
>> Changes in v2:
>>   - Split off the bindings into a separate patch.
>>   - Add a new entry to the MAINTAINERS file.
>>
>>   .../devicetree/bindings/media/i2c/ov7740.txt       | 43 ++++++++++++++++++++++
>>   MAINTAINERS                                        |  8 ++++
>>   2 files changed, 51 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/media/i2c/ov7740.txt
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ov7740.txt b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> new file mode 100644
>> index 000000000000..b306e5aa97bf
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> @@ -0,0 +1,43 @@
>> +* Omnivision OV7740 CMOS image sensor
>> +
>> +The Omnivision OV7740 image sensor supports multiple output image
>> +size, such as VGA, and QVGA, CIF and any size smaller. It also
>> +supports the RAW RGB and YUV output formats.
>> +
>> +Required Properties:
>> +- compatible: should be "ovti,ov7740"
>> +- clocks: reference to the xvclk input clock.
>> +- clock-names: should be "xvclk".
>> +
>> +Optional Properties:
>> +- reset-gpios: reference to the GPIO connected to the reset_b pin,
>> +  if any. Active low with pull-ip resistor.
>> +- powerdown-gpios: reference to the GPIO connected to the pwdn pin,
>> +  if any. Active high with pull-down resistor.
>> +
>> +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.
> Could you add there's a single endpoint node as well, and explicitly
> document the relevant properties? E.g. as in
> Documentation/devicetree/bindings/media/i2c/nokia,smia.txt .
>
>> +
>> +Example:
>> +
>> +	i2c1: i2c at fc028000 {
>> +		ov7740: camera at 21 {
>> +			compatible = "ovti,ov7740";
>> +			reg = <0x21>;
>> +			pinctrl-names = "default";
>> +			pinctrl-0 = <&pinctrl_sensor_power &pinctrl_sensor_reset>;
>> +			clocks = <&isc>;
>> +			clock-names = "xvclk";
>> +			assigned-clocks = <&isc>;
>> +			assigned-clock-rates = <24000000>;
>> +			reset-gpios = <&pioA 43 GPIO_ACTIVE_LOW>;
>> +			powerdown-gpios = <&pioA 44 GPIO_ACTIVE_HIGH>;
>> +
>> +			port {
>> +				ov7740_0: endpoint {
>> +					remote-endpoint = <&isc_0>;
>> +				};
>> +			};
>> +		};
>> +	};
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 90230fe020f3..f0f3f121d1d8 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -9965,6 +9965,14 @@ S:	Maintained
>>   F:	drivers/media/i2c/ov7670.c
>>   F:	Documentation/devicetree/bindings/media/i2c/ov7670.txt
>>   
>> +OMNIVISION OV7740 SENSOR DRIVER
>> +M:	Wenyou Yang <wenyou.yang at microchip.com>
>> +L:	linux-media at vger.kernel.org
>> +T:	git git://linuxtv.org/media_tree.git
>> +S:	Maintained
>> +F:	drivers/media/i2c/ov7740.c
>> +F:	Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> +
>>   ONENAND FLASH DRIVER
>>   M:	Kyungmin Park <kyungmin.park at samsung.com>
>>   L:	linux-mtd at lists.infradead.org
> Please put the MAINTAINERS change to the driver patch after the DT binding
> patch.
>
Best Regards,
Wenyou Yang