linux-kernel - Re: [PATCH 1/2] dt-bindings usb: typec: rt1711h: Use a generic node name

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Message-ID: <20230221020126.GA797846-robh@kernel.org>
Date:   Mon, 20 Feb 2023 20:01:26 -0600
From:   Rob Herring <robh@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, marijn.suijten@...ainline.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Gene Chen <gene_chen@...htek.com>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings usb: typec: rt1711h: Use a generic node
 name

On Thu, Feb 16, 2023 at 01:12:10PM +0100, Konrad Dybcio wrote:
> Node names should be generic. Use typec-portc@ instead of rt1711h@.

What's generic? Others use just 'typec' IIRC. We must first define the 
generic name for everyone, then do this. It doesn't really work defining 
this in each binding either as there's no checking a generic name is in 
fact used. We either need a class type schema (which don't work when 
devices support multiple classes) or a meta-schema checking $nodename 
patterns match a set of known node names.

> 
> Fixes: a72095ed8e65 ("dt-bindings usb: typec: rt1711h: Add binding for Richtek RT1711H")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  Documentation/devicetree/bindings/usb/richtek,rt1711h.yaml | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/usb/richtek,rt1711h.yaml b/Documentation/devicetree/bindings/usb/richtek,rt1711h.yaml
> index 1999f614c89b..7431c25d82ce 100644
> --- a/Documentation/devicetree/bindings/usb/richtek,rt1711h.yaml
> +++ b/Documentation/devicetree/bindings/usb/richtek,rt1711h.yaml
> @@ -17,6 +17,9 @@ description: |
>    support for alternative interfaces of the Type-C specification.
>  
>  properties:
> +  $nodename:
> +    pattern: "^typec-portc@[0-9a-f]+$"
> +
>    compatible:
>      enum:
>        - richtek,rt1711h
> @@ -55,7 +58,7 @@ examples:
>        #address-cells = <1>;
>        #size-cells = <0>;
>  
> -      rt1711h@4e {
> +      typec-portc@4e {
>          compatible = "richtek,rt1711h";
>          reg = <0x4e>;
>          interrupts-extended = <&gpio26 3 IRQ_TYPE_LEVEL_LOW>;
> -- 
> 2.39.1
>