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 23:17:57 +0300
From:   Sakari Ailus <sakari.ailus@....fi>
To:     Sowjanya Komatineni <skomatineni@...dia.com>
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

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.

>  
> +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.

-- 
Kind regards,

Sakari Ailus