linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: light: Avago APDS9306

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Message-ID: <20231010161900.GA999361-robh@kernel.org>
Date:   Tue, 10 Oct 2023 11:19:00 -0500
From:   Rob Herring <robh@...nel.org>
To:     Matti Vaittinen <mazziesaccount@...il.com>
Cc:     Subhajit Ghosh <subhajit.ghosh@...aklogic.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Paul Gazzillo <paul@...zz.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Stefan Windfeldt-Prytz <stefan.windfeldt-prytz@...s.com>
Subject: Re: [PATCH 1/2] dt-bindings: iio: light: Avago APDS9306

On Tue, Oct 10, 2023 at 11:52:28AM +0300, Matti Vaittinen wrote:
> On 10/8/23 18:48, Subhajit Ghosh wrote:
> > Add devicetree bindings for Avago APDS9306 Ambient Light Sensor.
> > 
> > Signed-off-by: Subhajit Ghosh <subhajit.ghosh@...aklogic.com>
> > ---
> >   .../bindings/iio/light/avago,apds9306.yaml    | 49 +++++++++++++++++++
> >   1 file changed, 49 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/iio/light/avago,apds9306.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/iio/light/avago,apds9306.yaml b/Documentation/devicetree/bindings/iio/light/avago,apds9306.yaml
> > new file mode 100644
> > index 000000000000..e8bb897782fc
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/light/avago,apds9306.yaml
> > @@ -0,0 +1,49 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/iio/light/avago,apds9306.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Avago APDS9306 Ambient Light Sensor
> > +
> > +maintainers:
> > +  - Subhajit Ghosh <subhajit.ghosh@...aklogic.com>
> > +
> > +description:
> > +  Datasheet at https://docs.broadcom.com/doc/AV02-4755EN
> > +
> > +properties:
> > +  compatible:
> > +    const: avago,apds9306
> 
> I see the driver supports two different variants of this IC, differentiated
> by the part-ID register. Variants are named as apds9306 and apds9306-065. I
> wonder if we could/should have different compatibles for them?

If 1 compatible is sufficient to know how to power on both devices and 
read the part-ID register, then no need for different compatibles.

Rob