[v6,0/5] DDR/L3 Scaling support on SDM845 and SC7180 SoCs

Message

Sibi Sankar June 5, 2020, 9:33 p.m. UTC

This patch series aims to extend cpu based scaling support to L3/DDR on
SDM845 and SC7180 SoCs.

Patches [1-2] - Blacklist SDM845 and SC7180 in cpufreq-dt-platdev
Patches [3-5] - Update bw levels based on cpu frequency change

Based on Viresh's opp-next:
https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/log/?h=opp/linux-next

V6:
 * Add global flag to distinguish between voltage update and opp add.
   Use the same flag before trying to scale ddr/l3 bw [Viresh]
 * Use dev_pm_opp_find_freq_ceil to grab all opps [Viresh] 
 * Move dev_pm_opp_of_find_icc_paths into probe [Viresh]

V5:
 * Pick up R-bs from Amit
 * Drop icc tag support/dt changes till the a consensus is achieved
 * Use dev_pm_opp_adjust_voltage instead [Viresh]
 * Drop dev_pm_opp_get_path_count [Saravana]
 * Rework dev_pm_opp_set_bw

V4:
 * Migrate to using Georgi's new bindings
 * Misc fixups based on Matthias comments
 * API fixups based on Bjorn's comments on v2
 * Picked up a few R-bs from Matthias

v3:
 * Migrated to using Saravana's opp-kBps bindings [1]
 * Fixed some misc comments from Rajendra
 * Added support for SC7180

v2:
 * Incorporated Viresh's comments from:
 https://lore.kernel.org/lkml/20190410102429.r6j6brm5kspmqxc3@vireshk-i7/
 https://lore.kernel.org/lkml/20190410112516.gnh77jcwawvld6et@vireshk-i7/
 * Dropped cpufreq-map passive governor

Sibi Sankar (5):
  cpufreq: blacklist SDM845 in cpufreq-dt-platdev
  cpufreq: blacklist SC7180 in cpufreq-dt-platdev
  OPP: Add and export helper to set bandwidth
  cpufreq: qcom: Update the bandwidth levels on frequency change
  cpufreq: qcom: Disable fast switch when scaling DDR/L3

 drivers/cpufreq/cpufreq-dt-platdev.c |  2 +
 drivers/cpufreq/qcom-cpufreq-hw.c    | 86 ++++++++++++++++++++++++++--
 drivers/opp/core.c                   | 31 ++++++++++
 include/linux/pm_opp.h               |  6 ++
 4 files changed, 121 insertions(+), 4 deletions(-)

Comments

Viresh Kumar June 8, 2020, 10:27 a.m. UTC | #1

On 06-06-20, 03:03, Sibi Sankar wrote:
> This patch series aims to extend cpu based scaling support to L3/DDR on
> SDM845 and SC7180 SoCs.
> 
> Patches [1-2] - Blacklist SDM845 and SC7180 in cpufreq-dt-platdev
> Patches [3-5] - Update bw levels based on cpu frequency change
> 
> Based on Viresh's opp-next:
> https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/log/?h=opp/linux-next
> 
> V6:
>  * Add global flag to distinguish between voltage update and opp add.
>    Use the same flag before trying to scale ddr/l3 bw [Viresh]
>  * Use dev_pm_opp_find_freq_ceil to grab all opps [Viresh] 
>  * Move dev_pm_opp_of_find_icc_paths into probe [Viresh]

Picked for 5.9, will push to my branch after rc1 is out.