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[0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment

Message ID 20220622145802.13032-1-lukasz.luba@arm.com
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Series Energy Model power in micro-Watts and SCMI v3.1 alignment | expand

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Lukasz Luba June 22, 2022, 2:57 p.m. UTC 
Hi all,

This is a patch set which changes Energy Model power values scale to
micro-Watts. It also upgrades the SCMI performance layer + scmi-cpufreq
driver to leverage the SCMI v3.1 spec and process micro-Watts power values
coming from FW. The higher precision in EM power field solves an issue
of a rounding error, which then can be misinterpreted as 'inefficient OPP'.
An example rounding issue calculation is present in patch 1/4 description.

Regards,
Lukasz Luba

Lukasz Luba (4):
  PM: EM: convert power field to micro-Watts precision and align drivers
  Documentation: EM: Switch to micro-Watts scale
  firmware: arm_scmi: Get detailed power scale from perf
  cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1

 Documentation/power/energy-model.rst  | 14 +++---
 drivers/cpufreq/mediatek-cpufreq-hw.c |  7 +--
 drivers/cpufreq/scmi-cpufreq.c        | 15 ++++++-
 drivers/firmware/arm_scmi/perf.c      | 18 +++++---
 drivers/opp/of.c                      | 15 ++++---
 drivers/powercap/dtpm_cpu.c           |  5 +--
 drivers/thermal/cpufreq_cooling.c     | 13 +++++-
 drivers/thermal/devfreq_cooling.c     | 19 ++++++--
 include/linux/energy_model.h          | 63 ++++++++++++++++++++-------
 include/linux/scmi_protocol.h         |  8 +++-
 kernel/power/energy_model.c           | 31 ++++++++-----
 11 files changed, 146 insertions(+), 62 deletions(-)