From mboxrd@z Thu Jan  1 00:00:00 1970
From: Viresh Kumar <viresh.kumar@linaro.org>
Subject: Re: [Discussion] Performance levels of power domains
Date: Thu, 27 Oct 2016 13:58:08 +0530
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To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Kevin Hilman <khilman@baylibre.com>, "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Ulf Hansson <ulf.hansson@linaro.org>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@codeaurora.org>, "Nayak, Rajendra" <rnayak@codeaurora.org>, Georgi Djakov <georgi.djakov@linaro.org>, Lists linaro-kernel <linaro-kernel@lists.linaro.org>, Mark Brown <broonie@kernel.org>

On 27-10-16, 09:17, Vincent Guittot wrote:
> The M3 core takes only care of the voltage but not the clock ?

Yes. The is handled normally.

> Just to be sure to understand the problem:
> -There is no real voltage value but instead an opaque index that has
> to be used with frequency instead of a voltage.
> -This index is used by the M3 core to set voltages but M3 core doesn't
> set the clock which is managed by Linux.
> -The M3 core takes only one index input for the whole voltage domain
> and Linux must aggregate the constraints (with probably a max policy)
> of all devices that belong this domain
> 
> Am i missing something ?

No. All matches to my understanding of the problem.

-- 
viresh