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SubjectRe: [PATCH v5 0/3] Add required-opps support to devfreq passive gov
On Thu, Feb 4, 2021 at 1:41 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
>
> On 03-02-21, 17:23, Hsin-Yi Wang wrote:
> > The devfreq passive governor scales the frequency of a "child" device based
> > on the current frequency of a "parent" device (not parent/child in the
> > sense of device hierarchy). As of today, the passive governor requires one
> > of the following to work correctly:
> > 1. The parent and child device have the same number of frequencies
> > 2. The child device driver passes a mapping function to translate from
> > parent frequency to child frequency.
> >
> > When (1) is not true, (2) is the only option right now. But often times,
> > all that is required is a simple mapping from parent's frequency to child's
> > frequency.
> >
> > Since OPPs already support pointing to other "required-opps", add support
> > for using that to map from parent device frequency to child device
> > frequency. That way, every child device driver doesn't have to implement a
> > separate mapping function anytime (1) isn't true.
>
> So you guys aren't interested in dev_pm_opp_set_opp() but just the
> translation of the required-OPPs ?
>
I think this series focuses on required-opps.

> I am fine with most of the stuff and I would like to take it via OPP
> tree, hope that would be fine ?
>
Sounds good to me, thanks.

> --
> viresh

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