Messages in this thread | | | From | Punit Agrawal <> | Subject | [PATCH v5 0/3] Dynamic power model from device tree | Date | Tue, 17 Nov 2015 12:06:20 +0000 |
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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 - v4 -> v5 Updated tags across the patches arm_big_little: Do not register cooling devices when in IKS
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][3]. Mediatek platform 8173 builds on these bindings to build a power model.
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 [3] http://marc.info/?l=linux-pm&m=144770224915315&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 | 41 ++++++++++++++++++++++++++ drivers/cpufreq/cpufreq-dt.c | 9 ++++-- 4 files changed, 67 insertions(+), 2 deletions(-)
-- 2.6.2
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