[Letux-kernel] [RFC] ARM: dts: omap36xx: Enable thermal throttling

Viresh Kumar viresh.kumar at linaro.org
Wed Sep 18 11:24:18 CEST 2019


On 13-09-19, 00:33, Daniel Lezcano wrote:
> 
> Hi Adam,
> 
> On 12/09/2019 23:19, Adam Ford wrote:
> > On Thu, Sep 12, 2019 at 4:12 PM Daniel Lezcano
> > <daniel.lezcano at linaro.org> wrote:
> >>
> >> On 12/09/2019 20:30, Adam Ford wrote:
> >>> The thermal sensor in the omap3 family isn't accurate, but it's
> >>> better than nothing.  The various OPP's enabled for the omap3630
> >>> support up to OPP1G, however the datasheet for the DM3730 states
> >>> that OPP130 and OPP1G are not available above TJ of 90C.
> >>>
> >>> This patch configures the thermal throttling to limit the
> >>> operating points of the omap3630 to Only OPP50 and OPP100 if
> >>> the thermal sensor reads a value above 90C.
> 
> Oh, that's a very interesting use case.
> 
> AFAICT the thermal framework is not designed to deal with this
> situation. I agree this setup may work (even if I'm not convinced about
> the stability of the whole).
> 
> May be Viresh can help for the cpufreq side?

Sorry but I am not able to understand what's not supported by thermal framework
here and what can I do to help :)

-- 
viresh


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