Re: [PATCH V3 0/7] PM / Domains: Implement domain performance states

[Kevin Hilman]

Viresh Kumar <viresh.kumar@xxxxxxxxxx> writes:

> This series contain V3 of both the bindings and the code that implement
> them. They were sent separately earlier.
>
> Some platforms have the capability to configure the performance state of
> their power domains. The process of configuring the performance state is
> pretty much platform dependent and we may need to work with a wide range
> of configurables.  For some platforms, like Qcom, it can be a positive
> integer value alone, while in other cases it can be voltage levels, etc.

Why limit it to just voltage levels.

As I suggested earlier, I think this should use OPPs.  Remember that a
PM domain is not limited to a hardware power domain, but is just a
grouping mechanism for devices that share some PM properties.  As
mentioned by Geert, this can also be a clock domain, where frequencies
would make sense as well.  One can imagine using this type of PM domain
to manage an interconnect/bus which has scalable voltage/frequencies as
well.

Kevin