linux-kernel - Re: [RFC PATCH 3/5] dt-bindings: iio: Add KX022A accelerometer

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Date:   Wed, 21 Sep 2022 21:56:51 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Vaittinen, Matti" <Matti.Vaittinen@...rohmeurope.com>,
        Matti Vaittinen <mazziesaccount@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        Cosmin Tanislav <demonsingur@...il.com>,
        Jagath Jog J <jagathjog1996@...il.com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 3/5] dt-bindings: iio: Add KX022A accelerometer

On 21/09/2022 21:30, Vaittinen, Matti wrote:
> Hi dee Ho Krzysztof,
> 
> Thanks for looking through this!
> 
> On 9/21/22 22:11, Krzysztof Kozlowski wrote:
>> On 21/09/2022 13:45, Matti Vaittinen wrote:
>>> KX022A is a 3-axis Accelerometer from ROHM/Kionix. The senor features
>>> include variable ODRs, I2C and SPI control, FIFO/LIFO with watermark IRQ,
>>> +
>>> +maintainers:
>>> +  - Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> 
> My own comment - switch the email to the gmail-one. Company mail is 
> unreliable at best..
> 
>>> +
>>> +description: |
>>> +  KX022A is a 3-axis accelerometer supporting +/- 2G, 4G, 8G and 16G ranges,
>>> +  output data-rates from 0.78Hz to 1600Hz and a hardware-fifo buffering.
>>> +  KX022A can be accessed either via I2C or SPI.
>>> +
>>> +properties:
>>> +  compatible: kionix,kx022a
>>
>> Missing const. I wonder how did it pass testing...
> 
> I originally had
> oneOf:
>   items const ...
> construct here as I had separate compatibles for *-spi and *-i2c. I am 
> unsure if I remembered to run the tests after dropping the extra 
> compatibles :| - Sorry! I'll fix this.

This should be just:
  compatible:
    const: foo,bar

> 
>>> +  io_vdd-supply: true
>>
>> No underscores, so io-vdd-supply
> 
> The rationale behind the underscore is that the data-sheet uses terms 
> vdd and vdd_io (with underscore). I wanted to match the supply name to 
> what is used in the data-sheet. Not a big thing but I'd rather kept if 
> same as the data-sheet if the requirement of "no-underscores" is not 
> "hard". (If it is, then I'll drop the underscore).

Underscores trigger warnings at some dtc W level (W=1 or W=2) so they
are not allowed.


Best regards,
Krzysztof