linux-kernel - Re: [PATCH v3 1/2] dt-bindings: pinctrl: Add dt-bindings for Sunplus SP7021

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Date:   Fri, 10 Dec 2021 00:30:13 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Wells Lu <wellslutw@...il.com>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, wells.lu@...plus.com,
        dvorkin@...bo.com
Subject: Re: [PATCH v3 1/2] dt-bindings: pinctrl: Add dt-bindings for Sunplus SP7021

On Tue, Dec 7, 2021 at 5:17 AM Wells Lu <wellslutw@...il.com> wrote:

> Add dt-bindings header files and documentation for Sunplus SP7021 SoC.
>
> Signed-off-by: Wells Lu <wellslutw@...il.com>

> +patternProperties:
> +  '-pins$':
> +    if:
> +      type: object
> +    then:
> +      description: |
> +        A pinctrl node should contain at least one subnodes representing the
> +        pins or function-pins group available on the machine. Each subnode
> +        will list the pins it needs, and how they should be configured.
> +
> +        Pinctrl node's client devices use subnodes for desired pin
> +        configuration. Client device subnodes use below standard properties.

I don't understand this if type object stuff here, Rob, help...

> +      properties:
> +        pins:
> +          description: |
> +            Define pins which are used by pinctrl node's client device.
(...)
> +          $ref: /schemas/types.yaml#/definitions/uint32-array

Why can this not $ref the standard binings in
Documentation/devicetree/bindings/pinctrl/pinmux-node.yaml

See for example
Documentation/devicetree/bindings/pinctrl/actions,s500-pinctrl.yaml
for a nice example of how to use this.

Yours,
Linus Walleij