linux-kernel - Re: [PATCH v2 1/2] dt-bindings: backlight: Add MPS MP3309C

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Date:   Fri, 15 Sep 2023 10:35:35 -0500
From:   Rob Herring <robh@...nel.org>
To:     Flavio Suligoi <f.suligoi@...m.it>
Cc:     Rob Herring <robh+dt@...nel.org>, Pavel Machek <pavel@....cz>,
        linux-leds@...r.kernel.org, linux-fbdev@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, Helge Deller <deller@....de>,
        Jingoo Han <jingoohan1@...il.com>, devicetree@...r.kernel.org,
        Conor Dooley <conor+dt@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>
Subject: Re: [PATCH v2 1/2] dt-bindings: backlight: Add MPS MP3309C


On Fri, 15 Sep 2023 16:05:15 +0200, Flavio Suligoi wrote:
> The Monolithic Power (MPS) MP3309C is a WLED step-up converter, featuring a
> programmable switching frequency to optimize efficiency.
> The brightness can be controlled either by I2C commands (called "analog"
> mode) or by a PWM input signal (PWM mode).
> This driver supports both modes.
> 
> For device driver details, please refer to:
> - drivers/video/backlight/mp3309c_bl.c
> 
> The datasheet is available at:
> - https://www.monolithicpower.com/en/mp3309c.html
> 
> Signed-off-by: Flavio Suligoi <f.suligoi@...m.it>
> ---
> 
> v2:
>  - remove useless properties (dimming-mode, pinctrl-names, pinctrl-0,
>    switch-on-delay-ms, switch-off-delay-ms, reset-gpios, reset-on-delay-ms,
>    reset-on-length-ms)
>  - add common.yaml#
>  - remove already included properties (default-brightness, max-brightness)
>  - substitute three boolean properties, used for the overvoltage-protection
>    values, with a single enum property
>  - remove some conditional definitions
>  - remove the 2nd example
> v1:
>  - first version
> 
>  .../bindings/leds/backlight/mps,mp3309c.yaml  | 73 +++++++++++++++++++
>  1 file changed, 73 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/backlight/mps,mp3309c.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/leds/backlight/mps,mp3309c.example.dtb: /example-0/i2c/backlight@17: failed to match any schema with compatible: ['mps,mp3309c-backlight']

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230915140516.1294925-1-f.suligoi@asem.it

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.