linux-kernel - Re: [PATCH 3/6] dt-bindings: pinctrl: mt7621: add proper function muxing binding

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Message-ID: <9d7bda38-69c9-95c8-e867-8bd5733debe2@linaro.org>
Date:   Wed, 14 Dec 2022 14:13:10 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: Re: [PATCH 3/6] dt-bindings: pinctrl: mt7621: add proper function
 muxing binding

On 13/12/2022 14:04, Arınç ÜNAL wrote:
> Not every function can be muxed to a group. Add proper binding which
> documents which function can be muxed to a group or set of groups.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> ---
>  .../pinctrl/ralink,mt7621-pinctrl.yaml        | 204 +++++++++++++++++-
>  1 file changed, 197 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml
> index 61e5c847e8c8..0efb03f1d88e 100644
> --- a/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml
> @@ -29,21 +29,212 @@ patternProperties:
>          $ref: pinmux-node.yaml#
>  
>          properties:
> -          groups:
> -            description: The pin group to select.
> -            enum: [i2c, jtag, mdio, pcie, rgmii1, rgmii2, sdhci, spi, uart1,
> -                   uart2, uart3, wdt]
> -
>            function:
> -            description: The mux function to select.
> +            description:
> +              A string containing the name of the function to mux to the group.
>              enum: [gpio, i2c, i2s, jtag, mdio, nand1, nand2, pcie refclk,
>                     pcie rst, pcm, rgmii1, rgmii2, sdhci, spdif2, spdif3, spi,
>                     uart1, uart2, uart3, wdt refclk, wdt rst]
>  
> +          groups:
> +            description:
> +              An array of strings. Each string contains the name of a group.

Here and in all patches - please add maxItems:1. The definition of field
should have some constraints (and your if:then: might miss a case).

Best regards,
Krzysztof