Re: [RFC][PATCH 1/2] dt-bindings: power: add Energy Model bindings

[Lukasz Luba]

On 2/22/22 11:15, Viresh Kumar wrote:
> On 22-02-22, 11:03, Lukasz Luba wrote:
> > OK, I misunderstood that. If that is possible than it would
> > be great. I'm assuming you are taking about OPP v2.
>
> Yes.
>
> > I can relax the
> > requirement that I need to provide this DT-EM for arm32, since they
> > have a legacy OPP v1.
>
> OPP V2 or V1 doesn't have anything to do with arm32/64. Anyone can implement the
> newer V2 version (basically whoever wants something more than a simple freq/volt
> pair). So arm32 SoC's that want to use the DT-EM thing, should migrate to
> opp-v2, we can't support that with opp-v1.
>
> > So we might have an entry similar that interconnect for the
> > bandwidth, but for us it would be 'opp-power-uw'?
>
> I will rather say similar to opp-microvolt or opp-microamp, so it better be
> opp-microwatt.
>
> > Let me have a look about some examples how that could be just
> > added/extended in the opp table but from board file.
> > If you have some handy link, I would be grateful.
>
> The file I provided earlier:
>
> arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
>
> This is updating opp-microvolt property of a single OPP node in the whole table.
> Pretty much like this only.

Thanks, I'll use that example for the v2