drm dsi2hdmi bridge - temperature sensor

[Vinay Simha B N]

On Fri, 15 Feb 2019 at 1:15 AM, Rob Herring <robh at kernel.org> wrote:

> On Thu, Feb 14, 2019 at 9:27 AM Rob Clark <robdclark at gmail.com> 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 at gmail.com>
> 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
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