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Date:   Wed, 12 Aug 2020 16:41:20 -0600
From:   Rob Herring <robh@...nel.org>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     devicetree@...r.kernel.org,
        Linux HWMON List <linux-hwmon@...r.kernel.org>,
        "open list:REAL TIME CLOCK (RTC) SUBSYSTEM" 
        <linux-rtc@...r.kernel.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        Linux USB List <linux-usb@...r.kernel.org>,
        "open list:REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM" 
        <linux-remoteproc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...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>,
        netdev <netdev@...r.kernel.org>,
        MTD Maling List <linux-mtd@...ts.infradead.org>,
        Linux I2C <linux-i2c@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        Linux Input <linux-input@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: Whitespace clean-ups in schema files

On Wed, Aug 12, 2020 at 3:34 PM Sam Ravnborg <sam@...nborg.org> wrote:
>
> Hi Rob.
>
> On Wed, Aug 12, 2020 at 02:36:18PM -0600, 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).
>
> I have browsed through the patch - and there was only a few things
> that jumped at me.
>
> With these points considered:
> Acked-by: Sam Ravnborg <sam@...nborg.org>
>
> I expect only some (few) of my points to actually results in any updates.
>
> I look forward to have the lint functionality as part of the built-in
> tools so we catch these things early.
>
>         Sam
>
> > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
> > index f63895c8ce2d..88814a2a14a5 100644
> > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > @@ -273,8 +273,8 @@ properties:
> >                - fsl,imx6ull-14x14-evk     # i.MX6 UltraLiteLite 14x14 EVK Board
> >                - kontron,imx6ull-n6411-som # Kontron N6411 SOM
> >                - myir,imx6ull-mys-6ulx-eval # MYiR Tech iMX6ULL Evaluation Board
> > -              - toradex,colibri-imx6ull-eval            # Colibri iMX6ULL Module on Colibri Evaluation Board
> > -              - toradex,colibri-imx6ull-wifi-eval       # Colibri iMX6ULL Wi-Fi / Bluetooth Module on Colibri Evaluation Board
> > +              - toradex,colibri-imx6ull-eval      # Colibri iMX6ULL Module on Colibri Eval Board
> > +              - toradex,colibri-imx6ull-wifi-eval # Colibri iMX6ULL Wi-Fi / BT Module on Colibri Eval Board
> >            - const: fsl,imx6ull
>
> This change looks bad as it drops the alignment with the comments below.
> See following patch chunck:

Yes, but as a whole there's no alignment in this file. Even the rest
of the entries for the hunk below aren't aligned.

Perhaps this form would be better:

    # Colibri iMX6ULL Wi-Fi / BT Module on Colibri Eval Board
  - toradex,colibri-imx6ull-wifi-eval

But I really don't want to go fix this in the whole file...

> >        - description: Kontron N6411 S Board
> > @@ -312,9 +312,12 @@ properties:
> >                - toradex,colibri-imx7d                   # Colibri iMX7 Dual Module
> >                - toradex,colibri-imx7d-aster             # Colibri iMX7 Dual Module on Aster Carrier Board
> >                - toradex,colibri-imx7d-emmc              # Colibri iMX7 Dual 1GB (eMMC) Module
> > -              - toradex,colibri-imx7d-emmc-aster        # Colibri iMX7 Dual 1GB (eMMC) Module on Aster Carrier Board
> > -              - toradex,colibri-imx7d-emmc-eval-v3      # Colibri iMX7 Dual 1GB (eMMC) Module on Colibri Evaluation Board V3
> > -              - toradex,colibri-imx7d-eval-v3           # Colibri iMX7 Dual Module on Colibri Evaluation Board V3
> > +              - toradex,colibri-imx7d-emmc-aster        # Colibri iMX7 Dual 1GB (eMMC) Module on
> > +                                                        #  Aster Carrier Board
>
>
>
> > diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml
> > index 177d48c5bd97..e89c1ea62ffa 100644
> > --- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml
> > +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml
> > @@ -25,8 +25,7 @@ properties:
> >    compatible:
> >      items:
> >        - enum:
> > -        - dlink,dir-685-panel
> > -
> > +          - dlink,dir-685-panel
> >        - const: ilitek,ili9322
> >
> >    reset-gpios: true
> > diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
> > index a39332276bab..76a9068a85dd 100644
> > --- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
> > +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml
> > @@ -13,8 +13,7 @@ properties:
> >    compatible:
> >      items:
> >        - enum:
> > -        - bananapi,lhr050h41
> > -
> > +          - bananapi,lhr050h41
> >        - const: ilitek,ili9881c
> >
>
> The extra lines is a simple way to indicate that here shall be added
> more in the future. So I like the empty line.

News to me. I thought 'enum' indicates that. My preference here is a
blank line just between DT properties.

> > diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> > index 32e0896c6bc1..47938e372987 100644
> > --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> > +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> > @@ -79,7 +79,8 @@ properties:
> >      description: |
> >        kHz; switching frequency.
> >      $ref: /schemas/types.yaml#/definitions/uint32
> > -    enum: [ 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200, 4800, 9600 ]
> > +    enum: [ 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371, 1600, 1920,
> > +            2400, 3200, 4800, 9600 ]
> >
> >    qcom,ovp:
> >      description: |
>
> In the modern world we are living in now line length of 100 chars are
> OK. checkpatch and coding_style is updated to reflected this.

Yes, and it was 102. For yamllint I actually put it at 110 just to get
to a reasonable number that I wanted to fix and warning free. I think
I fixed all non comment cases to be less than 100 and comments to be
up to 110.

> > diff --git a/Documentation/devicetree/bindings/spi/mikrotik,rb4xx-spi.yaml b/Documentation/devicetree/bindings/spi/mikrotik,rb4xx-spi.yaml
> > index 4ddb42a4ae05..9102feae90a2 100644
> > --- a/Documentation/devicetree/bindings/spi/mikrotik,rb4xx-spi.yaml
> > +++ b/Documentation/devicetree/bindings/spi/mikrotik,rb4xx-spi.yaml
> > @@ -33,4 +33,5 @@ examples:
> >          reg = <0x1f000000 0x10>;
> >      };
> >
> > -...
> > \ No newline at end of file
> > +...
> > +
>
> Added one line too much?

Indeed.

>  diff --git a/Documentation/devicetree/bindings/spi/spi-mux.yaml b/Documentation/devicetree/bindings/spi/spi-mux.yaml
> > index 0ae692dc28b5..3d3fed63409b 100644
> > --- a/Documentation/devicetree/bindings/spi/spi-mux.yaml
> > +++ b/Documentation/devicetree/bindings/spi/spi-mux.yaml
> > @@ -43,47 +43,47 @@ properties:
> >      maxItems: 1
> >
> >  required:
> > -   - compatible
> > -   - reg
> > -   - spi-max-frequency
> > -   - mux-controls
> > +  - compatible
> > +  - reg
> > +  - spi-max-frequency
> > +  - mux-controls
> >
> >  examples:
> > -   - |
> > -     #include <dt-bindings/gpio/gpio.h>
> > -     mux: mux-controller {
> > -       compatible = "gpio-mux";
> > -       #mux-control-cells = <0>;
> > +  - |
> > +    #include <dt-bindings/gpio/gpio.h>
> > +    mux: mux-controller {
> > +        compatible = "gpio-mux";
> > +        #mux-control-cells = <0>;
> >
> > -       mux-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
> > -     };
> > +        mux-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
> > +    };
>
> Example is updated to use 4-space indent. I like.
>
> But many other examples are left untouched.

That was not the purpose here. The '- |' line was indented 1 too many.
IIRC, the parser is not happy if you only change that line, so at
least the 1st line of the example had to be updated anyways.

> So I wonder if updating all examples to the same indent should
> be left for another mega-patch?

I've said this before, but until example indentation is automatically
checked I'm not going to care.

> > diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > index f3d847832fdc..2baee2c817c1 100644
> > --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > @@ -993,7 +993,8 @@ patternProperties:
> >    "^sst,.*":
> >      description: Silicon Storage Technology, Inc.
> >    "^sstar,.*":
> > -    description: Xiamen Xingchen(SigmaStar) Technology Co., Ltd. (formerly part of MStar Semiconductor, Inc.)
> > +    description: Xiamen Xingchen(SigmaStar) Technology Co., Ltd.
> > +      (formerly part of MStar Semiconductor, Inc.)
> >    "^st,.*":
> >      description: STMicroelectronics
> >    "^starry,.*":
>
> Did you check that they are all in alphabetical order?
> I would be suprised if this is the only issue in this file.

Nope, as that's not a WS or linter thing. Alphabetical order is about
the only thing I look at reviewing additions to this, but I'm sure
some errors have slipped in.

Thanks for taking a look.


Rob

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