Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver

Ulf Hansson
2016-09-08T09:27:58Z

[...]

>
> One more idea...
>
> Since you don't really have a domain (a group of devices), what you
> really have is each device having an independent power switch, so as Ulf
> suggested, what you really need is for all the devices to share the same
> set of runtime PM callbacks that call SCI. The only difference is the
> unique ID.
>
> Rather than using all of genpd, you could also just use a pm_domain
> which is what genpd is built on top of (and also omap_device, which
> you're probably familiar with also.)

Even if this would work as well, the downside would be that you need
to re-invent the parts related to the DT parsing, the probing/removal
and attaching/detaching of the device to the PM domain.

You probably don't want to go there... :-)

>
> That would allow you to keep the drivers completely generic, yet share
> all the SCI specific "domain" code inside a pm_domain.
>
> Kevin

Kind regards
Uffe