On Fri, 15 Feb 2019 at 1:15 AM, Rob Herring <robh@xxxxxxxxxx> wrote:
On Thu, Feb 14, 2019 at 9:27 AM Rob Clark <robdclark@xxxxxxxxx> wrote:
>
> I mean, I guess it should be possible with an ugly non-upstreamable
> hack, maybe using a notifier_chain to call from the temp sensor driver
> to the hdmi bridge driver. I'm not really sure how that could be
> represented cleanly in dt, maybe Rob Herring or someone else on
> dri-devel has some ideas.
>
> (Background is to not enable the display until temp is within an
> acceptable range, and disable it if it goes out of range, to prevent
> hw damage I guess)
The thermal framework already has support for temperature trip points
triggering "throttlers". I guess the display could be a throttling
device. Really, why wouldn't you just shutdown? Seems like a strange
usecase to keep running with the display going on and off based on
temperature.
We do not want to shutdown the system , since it’s temp threshold is up to -30 deg c , since display(adv7533) is upto -10 deg c, will control enable/disable based on temp range, otherwise life of the adv chip goes down and may not be operated later.
Rob
>
>
> BR,
> -R
>
> On Thu, Feb 14, 2019 at 7:32 AM Vinay Simha B N <simhavcs@xxxxxxxxx> wrote:
> >
> > rob,
> >
> > i am not getting much inputs in the freenode / dr-devel/irc forum.
> >
> > please suggest some inputs.
> >
> > In the interrupt handler of temperature sensor is it possible to control the drm bridge/encoder(adv7511) status to enable and disable?
> >
> > any other better approach to handle this scenario?
> >
> > --
> > regards,
> > vinaysimha
regards,
vinaysimha
vinaysimha
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