linux-kernel - Re: [PATCH V4 1/9] PM / OPP: Allow OPP table to be used for power-domains

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Date:   Thu, 27 Apr 2017 16:20:34 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     Sudeep Holla <sudeep.holla@....com>,
        Mark Brown <broonie@...nel.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>, ulf.hansson@...aro.org,
        Kevin Hilman <khilman@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        robh+dt@...nel.org, lina.iyer@...aro.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH V4 1/9] PM / OPP: Allow OPP table to be used for
 power-domains


On 04/27/2017 03:12 PM, Sudeep Holla wrote:
[]..

>>
>>> At qualcomm, we have an external M3 core (running its own firmware) which controls
>>> a few voltage rails (including AVS on those). The devices vote for the voltage levels
> 
> Thanks for explicitly mentioning this, but ...
> 
>>> (or performance levels) they need by passing an integer value to the M3 (not actual
> 
> you contradict here, is it just voltage or performance(i.e. frequency)
> or both ? We need clarity there to choose the right representation.

Its just voltage.

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