linux-kernel - [PATCH v4 0/3] Dynamic power model from device tree

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Date:	Mon, 16 Nov 2015 19:30:22 +0000
From:	Punit Agrawal <punit.agrawal@....com>
To:	devicetree@...r.kernel.org
Cc:	Punit Agrawal <punit.agrawal@....com>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, edubezval@...il.com,
	dawei.chien@...iatek.com, javi.merino@....com
Subject: [PATCH v4 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.

Changes from previous posting -

v3 -> v4:
arm_big_little: Migrated to using static arrays
arm_big_little: Updated Kconfig to support building thermal as module

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 at [0][1][2]. Mediatek platform
8173 builds on these bindings to build the power model.

If there are no objections, I'd appreciate Acks from device tree
bindings maintainers.

Thanks,
Punit

[0] http://thread.gmane.org/gmane.linux.kernel/2002152
[1] http://thread.gmane.org/gmane.linux.kernel/2011466
[2] http://marc.info/?l=linux-kernel&m=144709020014884&w=2

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/Kconfig.arm                    |  2 ++
 drivers/cpufreq/arm_big_little.c               | 35 ++++++++++++++++++++++++++
 drivers/cpufreq/cpufreq-dt.c                   |  9 +++++--
 4 files changed, 61 insertions(+), 2 deletions(-)

-- 
2.6.2

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