lkml.org 
[lkml]   [2022]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v3 0/4] Introduce "opp-microwatt" and 'advanced' Energy Model from DT
Date
Hi all,

This patch set solves a few issues:
1. It allows to register EM from DT, when the voltage information is not
available. (Some background of the issues present on Chromebook devices
can be checked at [1].)
2. It allows to register 'advanced' EM from the DT, which is more accurate
and reflects total power (dynamic + static).

Implementation details:
Existing machinery in the OPP framework now handles "opp-microwatt", similarly
to "opp-microamp". It also has helper exported function to get power from OPP.
For the EM, it adds a new callback in OPP framework to use this new API and
read power while having an opp pointer. It's agreed to work with OPP-v2.

Comments, suggestions are very welcome.

changelog:
v3:
- added generic support in the OPP for "opp-microwatt"
- renamed _of_has_opp_microwatt_property() and return bool from it
- simplified _of_has_opp_microwatt_property() just checking 1st opp's power
- squashed the return ret; into return em_dev_register_perf_domain();
- added EM documentation update patch
v2 [2]

Regards,
Lukasz Luba

[1] https://lore.kernel.org/linux-pm/20220207073036.14901-2-lukasz.luba@arm.com/
[2] https://lore.kernel.org/linux-pm/20220222140746.12293-1-lukasz.luba@arm.com/


Lukasz Luba (4):
dt-bindings: opp: Add "opp-microwatt" entry in the OPP
OPP: Add "opp-microwatt" supporting code
OPP: Add support of "opp-microwatt" for advanced EM registration
Documentation: EM: Describe new registration method using DT

.../devicetree/bindings/opp/opp-v2-base.yaml | 15 +++
Documentation/power/energy-model.rst | 10 ++
drivers/opp/core.c | 20 ++++
drivers/opp/of.c | 105 +++++++++++++++++-
include/linux/pm_opp.h | 12 +-
5 files changed, 159 insertions(+), 3 deletions(-)

--
2.17.1

\
 
 \ /
  Last update: 2022-02-24 09:14    [W:0.260 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site