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Date:      Wed, 21 Sep 2016 07:49:52 -0300 (ADT)
From:      Jared McNeill <jmcneill@invisible.ca>
To:        Daniel Braniss <danny@cs.huji.ac.il>
Cc:        arm@freebsd.org
Subject:   Re: ALL WINNER high temp. stop
Message-ID:  <alpine.DEB.2.11.1609210745050.641@dis.invisible.ca>
In-Reply-To: <01D85517-15ED-46FF-8C11-5A774EC1262F@cs.huji.ac.il>
References:  <B11041B2-0EDD-4E20-8684-CB471C17D81B@cs.huji.ac.il> <20160917171911.a2ec80da747ba373ba3d1b4a@bidouilliste.com> <5ADFE16E-FD60-45B1-8CF1-6FFC10BABBDE@cs.huji.ac.il> <20160917195544.a2a8bbdb113029700fa7642d@bidouilliste.com> <588E44BB-40BF-40B8-9C5A-BA025AB87E00@cs.huji.ac.il> <alpine.DEB.2.11.1609180930230.641@dis.invisible.ca> <4F7891B0-FBD7-451C-BA42-50F872804C95@cs.huji.ac.il> <08E5651B-A28E-4BE8-803B-650CD2434979@cs.huji.ac.il> <01D85517-15ED-46FF-8C11-5A774EC1262F@cs.huji.ac.il>

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CPU frequency scaling is supported now. Have you added operating points to 
the dts? Without a heatsink or fan, you need to set a reasonable set of 
operating points.

64C does seem quite low, the thermal driver uses the power-on default 
temperature for the shutdown temperature though (which should be > 100C).

Are you sure you are using the correct compat string for the thermal 
driver in your dts? Different SoCs use a different formula for reading the 
temperature.

Cheers,
Jared

On Wed, 21 Sep 2016, Daniel Braniss wrote:

> hi all,
> now that there is thermal control, trying to compile e.g. from ports
> portmaster, heats up the cpu, which somewhere around 64C
> decides to halt.
> Now, I remember some weeks ago, with a kernel version
> without the thermal stuff compiling python and all went ok,
> so
> Q: what is the thermal high water mark?
> Q: are the latest changes overheating the cpu, or is the thermal driver over
>     cautious?
>
> danny
>
>
>



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