Hi Linus,

On Thu, Mar 25, 2021 at 09:01:31AM +0100, Linus Walleij wrote:
> On Fri, Mar 19, 2021 at 4:04 PM Maxime Ripard <maxime@cerno.tech> wrote:
> 
> > How could we put some kind of downward pressure on the clock rate to
> > make it run at its minimum all the time? It looks like the PM QoS
> > framework implements something similar for the bus bandwidth, except
> > that it's not really a bus that have this requirement here.
> 
> Unsolicited comment: this is similar to what _regulator_do_set_voltage()
> is doing with voltages that can be expressed as linear intervals or
> selectors (fixed voltage steps) when a consumer calls
> regulator_set_voltage().

Thanks for the pointer :)

It's definitely relevant, regulators and clocks are fairly similar in
what constraints they have and how consumers would want to express them
I guess.

To some extent regulator_get_optimal_voltage is also something relevant
to the discussion, since it will try to find the best match for the
opposite scenario: a single user with multiple regulators

Maxime