linux-kernel - Re: [PATCH v2 1/3] dt-bindings: can-controller: add support for termination-gpios

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Message-ID: <YRxf/gKvS3o+hq1/@robh.at.kernel.org>
Date:   Tue, 17 Aug 2021 20:18:54 -0500
From:   Rob Herring <robh@...nel.org>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        David Jander <david@...tonic.nl>
Subject: Re: [PATCH v2 1/3] dt-bindings: can-controller: add support for
 termination-gpios

On Tue, Aug 17, 2021 at 06:13:04AM +0200, Oleksij Rempel wrote:
> Some boards provide GPIO controllable termination resistor. Provide
> binding to make use of it.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  .../devicetree/bindings/net/can/can-controller.yaml      | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/can-controller.yaml b/Documentation/devicetree/bindings/net/can/can-controller.yaml
> index 9cf2ae097156..298ce69a8208 100644
> --- a/Documentation/devicetree/bindings/net/can/can-controller.yaml
> +++ b/Documentation/devicetree/bindings/net/can/can-controller.yaml
> @@ -13,6 +13,15 @@ properties:
>    $nodename:
>      pattern: "^can(@.*)?$"
>  
> +  termination-gpios:
> +    description: GPIO pin to enable CAN bus termination.

maxItems: 1

> +
> +  termination-ohms:
> +    description: The resistance value of the CAN bus termination resistor.
> +    $ref: /schemas/types.yaml#/definitions/uint16-array

Standard unit properties already have a type and are uint32.

> +    minimum: 1
> +    maximum: 65535
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.30.2
> 
>