linux-kernel - Re: [PATCH v2 2/3] dt-bindings: trivial-devices: add aosong,ags02ma

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Message-ID: <9b1674d7-c41d-4d8b-bb28-09ed201c72cd@gmail.com>
Date:   Wed, 15 Nov 2023 21:29:20 +0530
From:   Anshul Dalal <anshulusr@...il.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH v2 2/3] dt-bindings: trivial-devices: add aosong,ags02ma

On 11/15/23 20:08, Conor Dooley wrote:
> On Wed, Nov 15, 2023 at 06:28:07PM +0530, Anshul Dalal wrote:
>> Add bindings for Aosong AGS02MA TVOC sensor.
>>
>> The sensor communicates over i2c with the default address 0x1a.
>> TVOC values can be read in the units of ppb and ug/m^3 at register 0x00.
>>
>> Datasheet:
>>   https://asairsensors.com/wp-content/uploads/2021/09/AGS02MA.pdf
>> Product-Page:
>>   http://www.aosong.com/m/en/products-33.html
>>
>> Signed-off-by: Anshul Dalal <anshulusr@...il.com>
>> ---
>>
>> Changes for v2:
>> - Removed device from trivial-devices
> 
> Your $subject still says "trivial-devices" though, so please fix that in
> your next submission.
> 
>> - Added standalone binding with vdd-supply property
>> ---
>>  .../bindings/iio/chemical/aosong,ags02ma.yaml | 48 +++++++++++++++++++
>>  1 file changed, 48 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/iio/chemical/aosong,ags02ma.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/iio/chemical/aosong,ags02ma.yaml b/Documentation/devicetree/bindings/iio/chemical/aosong,ags02ma.yaml
>> new file mode 100644
>> index 000000000000..4a0278c6318c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/iio/chemical/aosong,ags02ma.yaml
>> @@ -0,0 +1,48 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/iio/chemical/aosong,ags02ma.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Aosong AGS02MA VOC Sensor
>> +
>> +description: |
>> +  AGS02MA is an TVOC (Total Volatile Organic Compounds) i2c sensor with default
>> +  address of 0x1a.
>> +
>> +  Datasheet:
>> +    https://asairsensors.com/wp-content/uploads/2021/09/AGS02MA.pdf
>> +
>> +maintainers:
>> +  - Anshul Dalal <anshulusr@...il.com>
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - aosong,ags02ma
>> +      - asair,ags02ma
> 
> Why do you have two compatibles for the same device? Please document and
> use only one of these. The aoson website says:
> "Guangzhou ASAIR Electronic Co., Ltd"

I'm sorry but I couldn't find any reference to such name on
http://www.aosong.com/en/
In the contact page (http://www.aosong.com/en/article-34.html),
I could only find references to "Guangzhou Aosong Electronic Co., Ltd."

> so I suspect "asair" is a more apt vendor prefix.
> 

Asair is the brand name under which Guangzhou Aosong Electronics sells
their products [0]. After a prior discussion with Krzysztof [1], I
thought it would be the best to go with Aosong instead.

The rationale being since a vendor can only have a single prefix, if
Aosong were to sell some new product under the name Aosong, it would
then have to have the same vendor-prefix as other products under the
Asair brand.

[0]: https://www.linkedin.com/company/asairsensor/
[1]:
https://lore.kernel.org/lkml/1f62ab04-1679-44b1-b95e-e3954afbfa88@linaro.org/
Best regards,
Anshul