[linux-pm] [PATCH 2/4] thermal: Add generic cpufreq cooling implementation

Sundar sunder.svit at gmail.com
Tue Mar 13 10:14:57 UTC 2012


On Tue, Mar 13, 2012 at 3:30 PM, Amit Kucheria <amit.kucheria at linaro.org> wrote:
> Sundar,

Hi Amit,

> At the moment it doesn't. But there was some discussion around
> creating something that will work with devfreq. This would allow
> peripheral drivers to be plugged in as well. Amit is investigating
> that at present.

What if we work towards a generic constraint framework which models
thermals as a performance constraint.

Drivers can register to this constraint; platform code can then decide
to issue restrictions either to the CPU or other power-hungry
peripherals based on the platform conditions.

That also allows to model CPU frequency as a generic constraint but
via an actual consumer, say the thermal driver.

Cheers!

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