[PATCH 2/8] cpufreq: add driver for Armada XP

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Wed Jul 16 07:02:56 PDT 2014

Dear Viresh Kumar,

On Fri, 4 Jul 2014 15:25:35 +0530, Viresh Kumar wrote:
> On 4 July 2014 15:14, Thomas Petazzoni
> <thomas.petazzoni at free-electrons.com> wrote:
> > This commit adds a simple cpufreq driver for the Armada XP SoC, which
> > has one separately controllable clock for each CPU. For this reason,
> > the existing cpufreq-cpu0 generic driver cannot be used because it
> > currently assumes that there is only one clock controlling the
> > frequency of all CPUs.
> >
> > There are on-going discussions on extending the cpufreq-cpu0 to cover
> > the case of having one clock for each CPU, but there are still some
> > unresolved issues to get this extended cpufreq-cpu0 driver merged.
> Exactly, and those changes would get merged in one form or the other.
> Surely in 3.17 atleast, if not 3.16 as we are already reaching rc4..
> So, it would be great if you can test on top of those changes to see if
> something isn't solved for your platform yet?
> git://git.linaro.org/people/viresh.kumar/linux.git cpufreq/cpu0-krait-v3

Are these changes in linux-next ? The mvebu maintainer Jason Cooper has
pulled the cpufreq support for Armada XP, so it will appear in
linux-next tomorrow. It would be good of the cpufreq-generic driver
improvements (to support one clock per CPU) were also part of
linux-next so that we could test that the combination works as expected
(of course, I did test locally, but I'd like to ensure it still works
in linux-next).

Could you get your tree in linux-next, or get your patches merged by
Rafael in his linux-next branch so that they will appear in linux-next ?


Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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