lkml.org 
[lkml]   [2017]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 0/7] PM / OPP: per OPP node clock support and imx7ulp cpufreq driver
    Hi Viresh and Rafael,

    On Thu, Aug 24, 2017 at 12:10:03AM +0800, Dong Aisheng wrote:
    > This patch series does three things:
    > 1) Add platform specific set_clk function
    > 2) Add per OPP node clock support
    > 3) Add imx7ulp cpufreq driver support
    >
    > 3 is depends on 1 & 2.
    >
    > MX7ULP supports HSRUN mode (528 Mhz), RUN mode (413 Mhz) and VLPR mode
    > (restricted to FIRC clock, usually 48 Mhz). This patch adds the cpufreq
    > driver support for HSRUN and RUN mode.
    > When in different modes, the A7 core is using different clocks:
    > RUN: clk run_divcore
    > HSRUN: clk hsrun_divcore
    >
    > Thus, this driver replies on the newly added features in OPP core framework
    > patch 1~6: e.g.
    > "PM / OPP: use OPP node clock to set CPU frequency"
    >
    > And since IMX7ULP CPU clock setting is different from the generic
    > set OPP clock, we also implemented a private set_clk function.
    >
    > Dong Aisheng (7):
    > PM / OPP: Add platform specific set_clk function
    > dt-bindings: PM / OPP: add clocks per OPP node support
    > PM / OPP: rename opp_table->clk to opp_table->cur_clk
    > PM / OPP: use OPP node clock to set CPU frequency
    > PM / OPP: Add dev_pm_opp_get_cur_clk()
    > cpufreq: make cpufreq_generic_init transition_latency default to
    > CPUFREQ_ETERNAL
    > cpufreq: add imx7ulp cpufreq driver
    >

    Do you have any comments about this series?

    Regards
    Dong Aisheng

    > Documentation/devicetree/bindings/opp/opp.txt | 52 ++++++
    > drivers/base/power/opp/core.c | 155 ++++++++++++++---
    > drivers/base/power/opp/of.c | 8 +
    > drivers/base/power/opp/opp.h | 11 +-
    > drivers/cpufreq/Kconfig.arm | 8 +
    > drivers/cpufreq/Makefile | 1 +
    > drivers/cpufreq/cpufreq.c | 2 +
    > drivers/cpufreq/imx7ulp-cpufreq.c | 234 ++++++++++++++++++++++++++
    > include/linux/pm_opp.h | 16 ++
    > 9 files changed, 466 insertions(+), 21 deletions(-)
    > create mode 100644 drivers/cpufreq/imx7ulp-cpufreq.c
    >
    > --
    > 2.7.4
    >

    \
     
     \ /
      Last update: 2017-09-11 09:28    [W:4.565 / U:0.036 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site