linux-kernel - Re: [PATCH 10/14] dt-bindings: pinctrl: rt2880: fix binding name, pin groups and functions

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Date:   Wed, 13 Apr 2022 17:25:08 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     erkin.bozoglu@...ont.com, 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 10/14] dt-bindings: pinctrl: rt2880: fix binding name, pin
 groups and functions

On 13/04/2022 08:07, Arınç ÜNAL wrote:
> Change binding name from ralink,rt2880-pinmux to ralink,rt2880-pinctrl.
> This is the binding for the Ralink RT2880 pinctrl subdriver.

What I don't see here is why you are doing this. pinmux/pinctrl have the
same meaning, I guess?

> 
> Current pin group and function bindings are for MT7621. Put bindings for
> RT2880 instead.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> ---
>  ...pinmux.yaml => ralink,rt2880-pinctrl.yaml} | 24 +++++++++----------
>  1 file changed, 12 insertions(+), 12 deletions(-)
>  rename Documentation/devicetree/bindings/pinctrl/{ralink,rt2880-pinmux.yaml => ralink,rt2880-pinctrl.yaml} (56%)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.yaml b/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinctrl.yaml
> similarity index 56%
> rename from Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.yaml
> rename to Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinctrl.yaml
> index 9de8b0c075e2..c657bbf9fdda 100644
> --- a/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinctrl.yaml
> @@ -1,21 +1,23 @@
>  # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>  %YAML 1.2
>  ---
> -$id: http://devicetree.org/schemas/pinctrl/ralink,rt2880-pinmux.yaml#
> +$id: http://devicetree.org/schemas/pinctrl/ralink,rt2880-pinctrl.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: Ralink rt2880 pinmux controller
> +title: Ralink RT2880 Pin Controller
>  
>  maintainers:
> +  - Arınç ÜNAL <arinc.unal@...nc9.com>

Mention this in commit msg.

>    - Sergio Paracuellos <sergio.paracuellos@...il.com>
>  
>  description:
> -  The rt2880 pinmux can only set the muxing of pin groups. Muxing indiviual pins
> +  Ralink RT2880 pin controller for RT2880 SoC.
> +  The pin controller can only set the muxing of pin groups. Muxing indiviual pins
>    is not supported. There is no pinconf support.
>  
>  properties:
>    compatible:
> -    const: ralink,rt2880-pinmux
> +    const: ralink,rt2880-pinctrl

you need to deprecate old property and add a new one.


>  
>  patternProperties:
>    '-pins$':
> @@ -28,14 +30,12 @@ patternProperties:
>  
>          properties:
>            groups:
> -            description: Name of the pin group to use for the functions.
> -            enum: [i2c, jtag, mdio, pcie, rgmii1, rgmii2, sdhci, spi,
> -                   uart1, uart2, uart3, wdt]
> +            description: The pin group to select.
> +            enum: [i2c, spi, uartlite, jtag, mdio, sdram, pci]
> +
>            function:
> -            description: The mux function to select
> -            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]
> +            description: The mux function to select.
> +            enum: [gpio, i2c, spi, uartlite, jtag, mdio, sdram, pci]
>  

These were all incorrect for rt2880, I understand?


Best regards,
Krzysztof