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

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Message-Id: <1447090163-13700-1-git-send-email-punit.agrawal@arm.com>
Date:	Mon,  9 Nov 2015 17:29:20 +0000
From:	Punit Agrawal <punit.agrawal@....com>
To:	devicetree@...r.kernel.org
Cc:	viresh.kumar@...aro.org, Punit Agrawal <punit.agrawal@....com>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	edubezval@...il.com, dawei.chien@...iatek.com
Subject: [PATCH v3 0/3] Dynamic power model from device tree

Hi,

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
constrained.

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

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.

Thanks,
Punit

[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
    device

 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(-)

-- 
2.5.3

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