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Message-ID: <20200831204005.GF844@valkosipuli.retiisi.org.uk>
Date:   Mon, 31 Aug 2020 23:40:05 +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

On Mon, Aug 31, 2020 at 01:37:21PM -0700, Sowjanya Komatineni wrote:
> 
> 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

The bindings were added back in 2017, so they're not really recent.

-- 
Sakari Ailus

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