linux-kernel - Re: [PATCH v2 1/3] dt-bindings: iio: light: al3010: add al3000a support

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Message-ID: <CAPVz0n1TqscXQvyyD44FWZtRvV6kqAdbD0AYYCmyJOqG_DgOsQ@mail.gmail.com>
Date: Sun, 16 Feb 2025 16:44:58 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Thierry Reding <thierry.reding@...il.com>, Jonathan Hunter <jonathanh@...dia.com>, 
	Javier Carrasco <javier.carrasco.cruz@...il.com>, Matti Vaittinen <mazziesaccount@...il.com>, 
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Emil Gedenryd <emil.gedenryd@...s.com>, 
	Arthur Becker <arthur.becker@...tec.com>, Mudit Sharma <muditsharma.info@...il.com>, 
	Per-Daniel Olsson <perdaniel.olsson@...s.com>, Subhajit Ghosh <subhajit.ghosh@...aklogic.com>, 
	Ivan Orlov <ivan.orlov0322@...il.com>, David Heidelberg <david@...t.cz>, linux-iio@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH v2 1/3] dt-bindings: iio: light: al3010: add al3000a support

нд, 16 лют. 2025 р. о 16:42 Jonathan Cameron <jic23@...nel.org> пише:
>
> On Sat, 15 Feb 2025 12:31:57 +0200
> Svyatoslav Ryhel <clamor95@...il.com> wrote:
>
> > AL3000a is an ambient light sensor quite closely related to
> > exising AL3010 and can reuse exising schema for AL3010.
> Hi,
>
> For a binding like this, also explain how they are different enough that
> we can't use a fallback compatible.
>
> Thanks,
>
> Jonathan
>

Fallback will cause use of inappropriate driver. As I have already
told, hardware configuration matches but data processing from sensor
does not.

> >
> > Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
> > ---
> >  .../devicetree/bindings/iio/light/dynaimage,al3010.yaml     | 6 ++++--
> >  1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/light/dynaimage,al3010.yaml b/Documentation/devicetree/bindings/iio/light/dynaimage,al3010.yaml
> > index a3a979553e32..f1048c30e73e 100644
> > --- a/Documentation/devicetree/bindings/iio/light/dynaimage,al3010.yaml
> > +++ b/Documentation/devicetree/bindings/iio/light/dynaimage,al3010.yaml
> > @@ -4,14 +4,16 @@
> >  $id: http://devicetree.org/schemas/iio/light/dynaimage,al3010.yaml#
> >  $schema: http://devicetree.org/meta-schemas/core.yaml#
> >
> > -title: Dyna-Image AL3010 sensor
> > +title: Dyna-Image AL3000a/AL3010 sensor
> >
> >  maintainers:
> >    - David Heidelberg <david@...t.cz>
> >
> >  properties:
> >    compatible:
> > -    const: dynaimage,al3010
> > +    enum:
> > +      - dynaimage,al3000a
> > +      - dynaimage,al3010
> >
> >    reg:
> >      maxItems: 1
>