linux-kernel - Re: [PATCH v2 1/2] media: dt-bindings: Add ST VD56G3 camera sensor binding

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Date: Mon, 27 May 2024 20:08:14 +0000
From: Sakari Ailus <sakari.ailus@....fi>
To: Sylvain Petinot <sylvain.petinot@...s.st.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	benjamin.mugnier@...s.st.com, mchehab@...nel.org, robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	linux-media@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] media: dt-bindings: Add ST VD56G3 camera sensor
 binding

Hi Sylvain,

On Mon, May 27, 2024 at 03:14:35PM +0200, Sylvain Petinot wrote:
> >> diff --git a/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml b/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml
> >> new file mode 100644
> >> index 000000000000..22cb2557e311
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml
> > 
> > Why duplicated 'st'?
> 
> Legacy : our first st-mipid02 driver was upstream this way few years back.
> 
> We have 3 options :
> 
> 1- keep this unpleasant naming to keep consistency with st-mipid02 [1]
> and st-vgxy61 [2]
> 2- rename this driver properly ('vd56g3') and keep the two others the
> old way (I personally don't like this option)
> 3- rename this driver properly ('vd56g3') and in a second patch rename
> the two others drivers.
> 
> I would be interested to get Sakari's opinion on this subject.
> 
> [1]:
> https://elixir.bootlin.com/linux/v6.9.1/source/drivers/media/i2c/st-mipid02.c
> 
> [2]:
> https://elixir.bootlin.com/linux/v6.9.1/source/drivers/media/i2c/st-vgxy61.c

The driver could be renamed to align with a large majority that use the
same name as the bindings without the vendor prefix. You could add
MODULE_ALIAS() to help user space to cope with the change.

The DT compatible string indeed should reflect the name of the device, the
driver is indeed another matter.

-- 
Kind regards,

Sakari Ailus