[PATCH v4 0/4] CPUFreq: Add support for opp-sharing cpus

From: Nicola Mazzucato
Date: Wed Dec 02 2020 - 12:23:02 EST


Hi All,

In this V4 posting I have fixed suggestions on opp/of and have added the
implementation for scmi-cpufreq driver.

This is to support systems where exposed cpu performance controls are more
fine-grained that the platform's ability to scale cpus independently.

[v4]
* Remove unconditional set of opp_table->shared_opp to exclusive
* Add implementation for scmi-cpufreq
* Change subject

These patches are on top of:
next-20201201 + Lukasz Luba's patches (waiting for Rafael) [1]

[v3]
* Remove proposal for new 'cpu-performance-dependencies' as we instead
can reuse the opp table.
* Update documentation for devicetree/bindings/opp
* Minor changes within opp to support empty opp table
* Rework the RFC by adding a second proposal

[v2]
* Fix errors when running make dt_binding_check
* Improve commit message description for the dt-binding
* Add RFC for implementation in cpufreq-core and one of its
drivers.

Nicola Mazzucato (3):
dt-bindings/opp: Update documentation for opp-shared
opp/of: Allow empty opp-table with opp-shared
scmi-cpufreq: get opp_shared_cpus from opp-v2 for EM

Sudeep Holla (1):
cpufreq: blacklist Arm Vexpress platforms in cpufreq-dt-platdev

Documentation/devicetree/bindings/opp/opp.txt | 53 +++++++++++++++++++
drivers/cpufreq/cpufreq-dt-platdev.c | 2 +
drivers/cpufreq/scmi-cpufreq.c | 51 ++++++++++++------
drivers/opp/of.c | 7 ++-
4 files changed, 95 insertions(+), 18 deletions(-)

[1] https://lore.kernel.org/linux-pm/20201124104346.27167-1-lukasz.luba@xxxxxxx/

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2.27.0