linux-kernel - Re: [PATCH 2/2] dt-bindings: opp: constrain required-opps

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Message-ID: <20230120043834.txkg4tockxcjqs2g@vireshk-i7>
Date:   Fri, 20 Jan 2023 10:08:34 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Ilia Lin <ilia.lin@...nel.org>,
        Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: opp: constrain required-opps

On 19-01-23, 14:00, Krzysztof Kozlowski wrote:
> Be specific how many required-opps are allowed.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
> 
> This change is independent, although logically is connected with my
> dtschema pull:
> https://github.com/devicetree-org/dt-schema/pull/95
> ---
>  Documentation/devicetree/bindings/opp/opp-v2-base.yaml     | 1 +
>  Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/opp/opp-v2-base.yaml b/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> index 47e6f36b7637..9b141a409191 100644
> --- a/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> +++ b/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> @@ -202,6 +202,7 @@ patternProperties:
>            for the functioning of the current device at the current OPP (where
>            this property is present).
>          $ref: /schemas/types.yaml#/definitions/phandle-array
> +        maxItems: 1

I may not under this property very well. What exactly does this line
say ? Asking as required-properties can have an array of phandles as
well.

>          items:
>            maxItems: 1
>  
> diff --git a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> index b4947b326773..438880db1872 100644
> --- a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> +++ b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> @@ -59,7 +59,8 @@ patternProperties:
>  
>        clock-latency-ns: true
>  
> -      required-opps: true
> +      required-opps:
> +        maxItems: 1
>  
>      required:
>        - opp-hz
> -- 
> 2.34.1

-- 
viresh