Re: [PATCH 0/4] Add sustainable OPP concept

Viresh Kumar
2020-10-29T07:42:31Z

On 28-10-20, 14:08, Lukasz Luba wrote:
> Hi all,
>
> This patch set introduces a concept of sustainable OPP, which then can be used
> by kernel frameworks or governors for estimating system sustainable system
> state. This kind of estimation is done e.g. in thermal governor Intelligent
> Power Allocation (IPA), which calculates sustainable power of the whole system
> and then derives some coefficients for internal algorithm.
>
> The patch set introduces a new DT bindings 'opp-sustainable', with parsing
> code. It also adds a function (in patch 3/4) which allows device drivers to set
> directly the sustainable OPP. This is helpful when the device drivers populate
> the OPP table by themself (example in patch 4/4).
>

Can we please have some more information about this ? What does the
sustainable OPP mean ? How will platform guys know or learn about this
? How we are going to use it finally ? What does it have to do with
temperature of the SoC or the thermal affects, etc.

--
viresh