linux-kernel - Re: [PATCH 2/3] dt-bindings: opp: opp-v2-kryo-cpu: add opp-microvolt nvmem based

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Message-ID: <4b58dcf1-df8a-048f-ba6f-ea170479751b@linaro.org>
Date:   Sun, 22 Jan 2023 15:00:22 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Christian Marangi <ansuelsmth@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Ilia Lin <ilia.lin@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>,
        Yassine Oudjana <y.oudjana@...tonmail.com>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: opp: opp-v2-kryo-cpu: add opp-microvolt
 nvmem based

On 21/01/2023 01:01, Christian Marangi wrote:
> The operating-points-v2-kryo-cpu driver supports defining multiple
> opp-microvolt based on the blown efuses in the soc. It consist of 3
> values that are parsed: speedbin, psv and version. They are all
> appended to the opp-microvolt name and selected by the nvmem driver and
> loaded dynamically at runtime.
> 
> Example:
> 
> opp-microvolt-speed0-pvs0-v0 = <1050000 997500 1102500>;
> opp-microvolt-speed0-pvs1-v0 = <975000 926250 1023750>;
> opp-microvolt-speed0-pvs2-v0 = <925000 878750 971250>;
> opp-microvolt-speed0-pvs3-v0 = <850000 807500 892500>;
> 
> Add support for this and reject these special binding if we don't have a
> nvmem-cell to read data from.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>  .../devicetree/bindings/opp/opp-v2-kryo-cpu.yaml | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> index b4947b326773..cea932339faf 100644
> --- a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> +++ b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
> @@ -61,6 +61,17 @@ patternProperties:
>  
>        required-opps: true
>  
> +    patternProperties:
> +      '^opp-microvolt-speed[0-9]-pvs[0-9]-v[0-9]$':

This does not end with correct unit suffix. Should be
opp-speed-.....-microvolt

> +        description: |
> +          Assign a microvolt value to the opp hz based on the efuses value from
> +          speedbin, pvs and vers

Where is the DTS change?

Best regards,
Krzysztof