Re: [PATCH mt76 v2 1/3] dt-bindings: net: wireless: mt76: Document power-limits country property

[Rob Herring <robh@kernel.org>]

On Fri, Sep 26, 2025 at 12:04:52PM +0200, Sven Eckelmann (Plasma Cloud) wrote:
> The commit 22b980badc0f ("mt76: add functions for parsing rate power limits
> from DT") added filtering of the power limits based on two properties:
> 
> * regdomain
> * country
> 
> If either the country or the regdomain matches, the power limits are
> applied and the search is aborted. If none of the two is defined for the
> power limit, it is a global (or "fallback") power limit. The last
> "fallback" power limit in the list will be returned when not matching
> regdomain or country was found.
> 
> The idea is here to allow to specify "overwriting" country limits in front
> of the list - just in case a regdomain is shared but a country has
> additional limitations.
> 
> But this property was forgotten to be defined in commit 2de6ccebe0e7
> ("dt-bindings:net:wireless:mediatek,mt76: introduce power-limits node").
> 
> Signed-off-by: Sven Eckelmann (Plasma Cloud) <se@simonwunderlich.de>
> ---
>  Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml b/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
> index eabceb849537c418650697da86682ef04c979193..f8f72f3f1b1dd185b4797be38b87c621ef3eac08 100644
> --- a/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
> +++ b/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
> @@ -151,6 +151,11 @@ properties:
>                - ETSI
>                - JP
>  
> +          country:
> +            $ref: /schemas/types.yaml#/definitions/string
> +            description:
> +              ISO 3166-1 alpha-2 country code for power limits

This would be constrained to something like this?:

pattern: '^[A-Z]{2}$'

> +
>          patternProperties:
>            "^txpower-[256]g$":
>              type: object
> 
> -- 
> 2.47.3
>