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Date:   Fri, 14 Aug 2020 18:30:17 +0200
From:   Luca Ceresoli <luca@...aceresoli.net>
To:     Rob Herring <robh@...nel.org>
Cc:     devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM" 
        <linux-remoteproc@...r.kernel.org>,
        Linux HWMON List <linux-hwmon@...r.kernel.org>,
        Linux I2C <linux-i2c@...r.kernel.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        Linux Input <linux-input@...r.kernel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        MTD Maling List <linux-mtd@...ts.infradead.org>,
        netdev <netdev@...r.kernel.org>,
        "open list:REAL TIME CLOCK (RTC) SUBSYSTEM" 
        <linux-rtc@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        Linux USB List <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: Whitespace clean-ups in schema files

Hi,

On 14/08/20 16:51, Rob Herring wrote:
> On Thu, Aug 13, 2020 at 4:31 AM Luca Ceresoli <luca@...aceresoli.net> wrote:
>>
>> Hi Rob,
>>
>> On 12/08/20 22:36, Rob Herring wrote:
>>> Clean-up incorrect indentation, extra spaces, long lines, and missing
>>> EOF newline in schema files. Most of the clean-ups are for list
>>> indentation which should always be 2 spaces more than the preceding
>>> keyword.
>>>
>>> Found with yamllint (which I plan to integrate into the checks).
>>
>> [...]
>>
>>> diff --git a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
>>> index 3d4e1685cc55..28c6461b9a9a 100644
>>> --- a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
>>> +++ b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
>>> @@ -95,10 +95,10 @@ allOf:
>>>        # Devices without builtin crystal
>>>        properties:
>>>          clock-names:
>>> -            minItems: 1
>>> -            maxItems: 2
>>> -            items:
>>> -              enum: [ xin, clkin ]
>>> +          minItems: 1
>>> +          maxItems: 2
>>> +          items:
>>> +            enum: [ xin, clkin ]
>>>          clocks:
>>>            minItems: 1
>>>            maxItems: 2
>>
>> Thanks for noticing, LGTM.
>>
>> [...]
>>
>>> diff --git a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml
>>> index d7dac16a3960..36dc7b56a453 100644
>>> --- a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml
>>> +++ b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml
>>> @@ -33,8 +33,8 @@ properties:
>>>      $ref: /schemas/types.yaml#/definitions/uint32
>>>
>>>    touchscreen-min-pressure:
>>> -    description: minimum pressure on the touchscreen to be achieved in order for the
>>> -                 touchscreen driver to report a touch event.
>>> +    description: minimum pressure on the touchscreen to be achieved in order
>>> +      for the touchscreen driver to report a touch event.
>>
>> Out of personal taste, I find the original layout more pleasant and
>> readable. This third option is also good, especially for long descriptions:
>>
>>   description:
>>     minimum pressure on the touchscreen to be achieved in order for the
>>     touchscreen driver to report a touch event.
>>
>> At first glance yamllint seems to support exactly these two by default:
>>
>>> With indentation: {spaces: 4, check-multi-line-strings: true}
> 
> Turning on check-multi-line-strings results in 10K+ warnings, so no.
> 
> The other issue is the style ruamel.yaml wants to write out is as the
> patch does above. This matters when doing some scripted
> transformations where we read in the files and write them back out. I
> can somewhat work around that by first doing a pass with no changes
> and then another pass with the actual changes, but that's completely
> scriptable. Hopefully, ruamel learns to preserve the style better.

Kind of sad, but I understand the reason as far as my understanding of
the yaml world allows. Thanks for the explanation.

[For idt,versaclock5.yaml, plus an overview of whole patch]
Reviewed-by: Luca Ceresoli <luca@...aceresoli.net>

-- 
Luca

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