linux-kernel - Re: [PATCHv2 3/4] dt-bindings: wiegand: add GPIO bitbanged Wiegand documentation

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Message-ID: <f87ba1db-6722-070a-79c5-6a25f9c4ce94@linaro.org>
Date:   Fri, 3 Feb 2023 08:22:40 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Martin Zaťovič <m.zatovic1@...il.com>,
        linux-kernel@...r.kernel.org
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        gregkh@...uxfoundation.org, martin.petersen@...cle.com,
        beanhuo@...ron.com, arnd@...db.de, avri.altman@....com,
        iwona.winiarska@...el.com, fmdefrancesco@...il.com,
        dipenp@...dia.com, ogabbay@...nel.org, bvanassche@....org,
        mathieu.poirier@...aro.org, yangyicong@...ilicon.com,
        dan.j.williams@...el.com, devicetree@...r.kernel.org,
        linus.walleij@...aro.org
Subject: Re: [PATCHv2 3/4] dt-bindings: wiegand: add GPIO bitbanged Wiegand
 documentation

On 02/02/2023 15:33, Martin Zaťovič wrote:
> GPIO bitbanged Wiegand controller requires definitions of GPIO
> lines to be used on top of the common Wiegand properties. Wiegand
> utilizes two such lines - D0(low data line) and D1(high data line).

Subject: drop second/last, redundant "bindings". The "documentation"
prefix is already stating that these are bindings.

You already got almost same comment with your v1.

> 
> Signed-off-by: Martin Zaťovič <m.zatovic1@...il.com>
> ---
>  .../bindings/wiegand/wiegand-gpio.yaml        | 51 +++++++++++++++++++
>  MAINTAINERS                                   |  5 ++
>  2 files changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml
> 
> diff --git a/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml b/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml
> new file mode 100644
> index 000000000000..3af0b7e04b3a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/wiegand/wiegand-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: GPIO bitbanged Wiegand interface devicetree bindings

Drop "devicetree bindings"

You already got almost same comment with your v1.

> +
> +maintainers:
> +  - Martin Zaťovič <m.zatovic1@...il.com>
> +
> +description:
> +  This represents the GPIO lines used for bit-banged Wiegand on dedicated GPIO
> +  lines.
> +
> +allOf:
> +  - $ref: "/schemas/wiegand/wiegand-controller.yaml#"

Drop quotes

> +
> +properties:
> +  compatible:
> +    const: wiegand-gpio
> +
> +  data-hi-gpios:
> +    description: GPIO used as Wiegands data-hi line.
> +    maxItems: 1
> +
> +  data-lo-gpios:
> +    description: GPIO used as Wiegands data-lo line.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - data-hi-gpios
> +  - data-lo-gpios
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    wiegand@f00 {

Does not look like you tested the bindings. Please run `make
dt_binding_check` (see
Documentation/devicetree/bindings/writing-schema.rst for instructions).

Best regards,
Krzysztof