linux-kernel - Re: [PATCH v4 3/4] dt-bindings: media: imx274: Move clock and supplies to required properties

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Date:   Mon, 31 Aug 2020 13:37:21 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     Sakari Ailus <sakari.ailus@....fi>
CC:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <hverkuil@...all.nl>, <luca@...aceresoli.net>,
        <leonl@...pardimaging.com>, <robh+dt@...nel.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 3/4] dt-bindings: media: imx274: Move clock and
 supplies to required properties


On 8/31/20 1:17 PM, Sakari Ailus wrote:
> Hi Sowjanya,
>
> On Mon, Aug 31, 2020 at 12:52:37PM -0700, Sowjanya Komatineni wrote:
>> Clock and supplies are external to IMX274 sensor and are dependent
>> on camera module design.
>>
>> So, this patch moves them to required properties.
>>
>> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
>> ---
>>   Documentation/devicetree/bindings/media/i2c/imx274.txt | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/imx274.txt b/Documentation/devicetree/bindings/media/i2c/imx274.txt
>> index d0a5c899..b43bed6 100644
>> --- a/Documentation/devicetree/bindings/media/i2c/imx274.txt
>> +++ b/Documentation/devicetree/bindings/media/i2c/imx274.txt
>> @@ -10,15 +10,15 @@ at 1440 Mbps.
>>   Required Properties:
>>   - compatible: value should be "sony,imx274" for imx274 sensor
>>   - reg: I2C bus address of the device
>> -
>> -Optional Properties:
>> -- reset-gpios: Sensor reset GPIO
>>   - clocks: Reference to the input clock.
>>   - clock-names: Should be "inck".
>>   - vana-supply: Sensor 2.8v analog supply.
>>   - vdig-supply: Sensor 1.8v digital core supply.
>>   - vddl-supply: Sensor digital IO 1.2v supply.
> If these have been optional in the past I don't think we can start
> requiring them now.
>
> The framework will just give the driver a dummy regulator if one isn't
> found.
These were added recently with my patches. So I hope should be ok to 
make them required as they are external to sensor
>
>>   
>> +Optional Properties:
>> +- reset-gpios: Sensor reset GPIO
>> +
>>   The imx274 device node should contain one 'port' child node with
>>   an 'endpoint' subnode. For further reading on port node refer to
>>   Documentation/devicetree/bindings/media/video-interfaces.txt.