linux-kernel - Re: [PATCH v3 1/2] Add OV5647 device tree documentation

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Date:   Tue, 18 Oct 2016 14:38:20 +0100
From:   Ramiro Oliveira <Ramiro.Oliveira@...opsys.com>
To:     Rob Herring <robh@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <mark.rutland@....com>,
        <mchehab@...nel.org>, <davem@...emloft.net>,
        <geert@...ux-m68k.org>, <akpm@...ux-foundation.org>,
        <kvalo@...eaurora.org>, <linux@...ck-us.net>, <hverkuil@...all.nl>,
        <lars@...afoo.de>, <pavel@....cz>, <robert.jarzmik@...e.fr>,
        <slongerbeam@...il.com>, <dheitmueller@...nellabs.com>,
        <pali.rohar@...il.com>, <CARLOS.PALMINHA@...opsys.com>
Subject: Re: [PATCH v3 1/2] Add OV5647 device tree documentation

On 10/18/2016 2:14 PM, Rob Herring wrote:
> On Wed, Oct 12, 2016 at 05:02:21PM +0100, Ramiro Oliveira wrote:
>> Signed-off-by: Ramiro Oliveira <roliveir@...opsys.com>
>> ---
>>  .../devicetree/bindings/media/i2c/ov5647.txt          | 19 +++++++++++++++++++
>>  1 file changed, 19 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ov5647.txt
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ov5647.txt b/Documentation/devicetree/bindings/media/i2c/ov5647.txt
>> new file mode 100644
>> index 0000000..4c91b3b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ov5647.txt
>> @@ -0,0 +1,19 @@
>> +Omnivision OV5647 raw image sensor
>> +---------------------------------
>> +
>> +OV5647 is a raw image sensor with MIPI CSI-2 and CCP2 image data interfaces
>> +and CCI (I2C compatible) control bus.
>> +
>> +Required properties:
>> +
>> +- compatible	: "ovti,ov5647";
>> +- reg		: I2C slave address of the sensor;
>> +
>> +The common video interfaces bindings (see video-interfaces.txt) should be
>> +used to specify link to the image data receiver. The OV5647 device
>> +node should contain one 'port' child node with an 'endpoint' subnode.
>> +
>> +Following properties are valid for the endpoint node:
>> +
>> +- data-lanes : (optional) specifies MIPI CSI-2 data lanes as covered in
>> +  video-interfaces.txt.  The sensor supports only two data lanes.
> What's the default if not present?

Since the sensor only supports 2 data lanes, this information will not be used,
even if it is available in the DT. So the default will be 2.

>
>> -- 
>> 2.9.3
>>
>>