Re: [PATCH] thermal: of: Introduce governor selection in dts

From: Sudeep Holla
Date: Tue Aug 11 2015 - 05:07:48 EST

On 10/08/15 18:47, Javi Merino wrote:
On Mon, Aug 10, 2015 at 09:00:49AM +0100, Chung-Yih Wang (çåæ) wrote:
This patch was originally introduced when we made power_allocator the
default governor where we had issues in binding a thermal zone w/o
parameters to. Then we came out this facility for binding a specific
governor to a thermal zone in dts instead of the default governor.
Javi seems like this idea much.

While I can understand why this is not suitable for devicetree, we
should have a way in the kernel to configure different governors for
different thermal zones defined in device tree. Thermal zones defined
from platform code can choose the thermal governor when they are

If this information can't go in device tree, where can we put it? As
an additional parameter to thermal_zone_of_sensor_register()?

Why can't it be via sysfs allowing users to select their choice of
governor ? (like cpuidle/freq or even devfreq I assume)

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