linux-kernel - Re: [PATCH v4 0/4] Introduce "opp-microwatt" and Energy Model from DT

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Date:   Wed, 2 Mar 2022 10:23:41 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
        rafael@...nel.org, daniel.lezcano@...aro.org, nm@...com,
        sboyd@...nel.org, mka@...omium.org, dianders@...omium.org,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 0/4] Introduce "opp-microwatt" and Energy Model from DT

On 01-03-22, 09:35, Lukasz Luba wrote:
> Hi all,
> 
> This patch set solves a few issues:
> 1. It allows to register EM from DT, when the voltage information is not
>    available. (Some background of the issues present on Chromebook devices
>    can be checked at [1].)
> 2. It allows to register 'advanced' EM from the DT, which is more accurate
>    and reflects total power (dynamic + static).
> 
> Implementation details:
> Existing machinery in the OPP framework now handles "opp-microwatt", similarly
> to "opp-microamp". It also has helper exported function to get power from OPP.
> For the EM, it adds a new callback in OPP framework to use this new API and
> read power while having an opp pointer. It's agreed to work with OPP-v2.
> 
> Comments, suggestions are very welcome.
> 
> changelog:
> v4:
> - changed calculation of power, summing add all supliers power for an opp
> - added opp debugfs for u_watt
> - added patternProperties in dt-bindings for this new opp-microwatt
> - changed the EM opp registration flow and used one EM api registration call
> - changed name of _get_opp_power() to _get_dt_power()
> - removed 'advanced' word from the new paragraph and content in EM doc changes
> v3 [2]

Apart from one minor things, the patchset looks fine now. Thanks for
considering the review comments :)

-- 
viresh