lkml.org 
[lkml]   [2014]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 12/13] cpufreq: Add cpufreq driver for Tegra124


    On 11/07/14 07:35, Viresh Kumar wrote:
    > Hi Tuomas,
    >
    > On 11 July 2014 03:12, Tuomas Tynkkynen <ttynkkynen@nvidia.com> wrote:
    >> Add a new cpufreq driver for Tegra124. Instead of using the PLLX as
    >> the CPU clocksource, switch immediately to the DFLL. It allows the use
    >> of higher clock rates, and will automatically scale the CPU voltage as
    >> well. We also rely on the DFLL driver to determine the CPU clock
    >> frequencies that the chip supports, so that we can directly build a
    >> cpufreq table with the OPP library helper dev_pm_opp_init_cpufreq_table.
    >>
    >> This driver is a completely independent of the old cpufreq driver
    >> (tegra-cpufreq), which is only used on Tegra20.
    >>
    >> Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
    >
    > Please reuse cpufreq-cpu0 instead of adding a new driver. Similar
    > is being adopted by all platforms now: krait, mvebu, etc..
    >

    Sure, I can do the CPU clock parent change first and then instantiate
    the cpufreq-cpu0 driver, like highbank-cpufreq. That'll depend on the
    patch 'cpufreq: cpu0: OPPs can be populated at runtime' from your
    'Extend support beyond CPU0' series though, any idea when that patch
    will land in?


    --
    nvpublic


    \
     
     \ /
      Last update: 2014-07-11 17:01    [W:2.434 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site