[PATCH v3 0/3] Dynamic power model from device tree

From: Punit Agrawal
Date: Mon Nov 09 2015 - 12:29:58 EST


This patchset adds support to build a single-coefficient dynamic power
model for a CPU. The model is used by the CPU cooling device to
provide an estimate of power consumption and also translate allocated
power to performance cap.

Patch 1 extends the CPU nodes binding to provide an optional dynamic
power coefficient which can be used to create a dynamic power model
for the CPUs. This model is used to constrain device power consumption
(using power_allocator governor) when the system is thermally

Patches 2-3 extends the cpufreq-dt and arm_big_little driver to
register cpu cooling devices with the dynamic coefficient when

The patches were previously posted as part of [0][1]. Since the last
posting Mediatek platform 8173 is also building on these bindings to
build the power model.

Feedback on the bindings would be particularly appreciated.


[0] http://thread.gmane.org/gmane.linux.kernel/2002152
[1] http://thread.gmane.org/gmane.linux.kernel/2011466

Punit Agrawal (3):
devicetree: bindings: Add optional dynamic-power-coefficient property
cpufreq-dt: Supply power coefficient when registering cooling devices
cpufreq: arm_big_little: Add support to register a cpufreq cooling

Documentation/devicetree/bindings/arm/cpus.txt | 17 +++++++++
drivers/cpufreq/arm_big_little.c | 52 +++++++++++++++++++++++++-
drivers/cpufreq/cpufreq-dt.c | 9 ++++-
3 files changed, 74 insertions(+), 4 deletions(-)


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