linux-kernel - Re: [PATCH v2 1/3] cpufreq: Add Tegra186 cpufreq driver

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Date:   Thu, 20 Apr 2017 02:46:37 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Mikko Perttunen <cyndis@...si.fi>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Mikko Perttunen <mperttunen@...dia.com>,
        thierry.reding@...il.com, jonathanh@...dia.com,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v2 1/3] cpufreq: Add Tegra186 cpufreq driver

On Tuesday, April 11, 2017 09:37:28 AM Mikko Perttunen wrote:
> On 04/11/2017 09:35 AM, Viresh Kumar wrote:
> > On 04-04-17, 16:43, Mikko Perttunen wrote:
> >> Add a new cpufreq driver for Tegra186 (and likely later).
> >> The CPUs are organized into two clusters, Denver and A57,
> >> with two and four cores respectively. CPU frequency can be
> >> adjusted by writing the desired rate divisor and a voltage
> >> hint to a special per-core register.
> >>
> >> The frequency of each core can be set individually; however,
> >> this is just a hint as all CPUs in a cluster will run at
> >> the maximum rate of non-idle CPUs in the cluster.
> >>
> >> Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
> >> ---
> >> v2:
> >> - Many cosmetic / restructuring changes
> >> - Only one aperture read from DT now, with a new
> >>   structure containing the offset among other details
> >>   per cluster.
> >> - Don't enable the driver by default.
> >>
> >>  drivers/cpufreq/Kconfig.arm        |   6 +
> >>  drivers/cpufreq/Makefile           |   1 +
> >>  drivers/cpufreq/tegra186-cpufreq.c | 275 +++++++++++++++++++++++++++++++++++++
> >>  3 files changed, 282 insertions(+)
> >>  create mode 100644 drivers/cpufreq/tegra186-cpufreq.c
> >
> > For all three patches.
> >
> > Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

I've applied the [1/3], but ACKs from the DT maintainers are needed for the
other two.

Thanks,
Rafael