Messages in this thread | | | Date | Thu, 13 Jun 2019 08:58:54 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH v4 4/7] cpufreq: add driver for Raspberry Pi |
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On 12-06-19, 20:24, Nicolas Saenz Julienne wrote: > Raspberry Pi's firmware offers and interface though which update it's > performance requirements. It allows us to request for specific runtime > frequencies, which the firmware might or might not respect, depending on > the firmware configuration and thermals. > > As the maximum and minimum frequencies are configurable in the firmware > there is no way to know in advance their values. So the Raspberry Pi > cpufreq driver queries them, builds an opp frequency table to then > launch cpufreq-dt. > > Also, as the firmware interface might be configured as a module, making > the cpu clock unavailable during init, this implements a full fledged > driver, as opposed to most drivers registering cpufreq-dt, which only > make use of an init routine. > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> > Acked-by: Eric Anholt <eric@anholt.net> > Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Applied. Thanks.
-- viresh
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