Re: [RFC/PATCH 0/5] DVFS in the OPP core

[Viresh Kumar]

On 08-02-19, 10:45, Ulf Hansson wrote:
> On Fri, 8 Feb 2019 at 08:17, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> >
> > On 07-02-19, 14:37, Ulf Hansson wrote:
> > > I think we also need to consider cross SoC drivers. One SoC may have
> > > both clocks and OPPs to manage, while another may have only clocks.
> >
> > We already have that case with CPUs as well and dev_pm_opp_set_rate()
> > takes care of it.
> 
> I think you may have misunderstood my point. Or maybe I don't get yours. :-)

It was me. I thought you are talking about regulators and that is what
is already managed, i.e. to work with or without regulators.

> What if there is no OPP at all to use, then dev_pm_opp_set_rate() is
> just a noop, right? In this scenario the driver still need to call
> clk_set_rate().
> 
> How do we cope with these cases?

Yeah, that would be a problem and hacking the OPP core may not be the
right solution :(

-- 
viresh