linux-kernel - Re: [PATCH v5 0/5] Introduce "opp-microwatt" and Energy Model from DT

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Date:   Thu, 3 Mar 2022 06:57:49 +0000
From:   Lukasz Luba <lukasz.luba@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
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 v5 0/5] Introduce "opp-microwatt" and Energy Model from DT



On 3/3/22 04:05, Viresh Kumar wrote:
> On 02-03-22, 11:29, 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:
>> v5:
>> - added dual-macro to conditionally setup needed callback and compile
>>    on !EM kernel gently
>> - removed 'advanced' word from OPP patch header description
>> v4 [2]
> 
> Applied. Thanks.
> 

Thank you Viresh for your reviews.

Regards,
Lukasz