Re: [PATCH RFT v1 1/3] drm/panfrost: enable devfreq based the "operating-points-v2" property

[Martin Blumenstingl]

Hi Robin,

On Wed, Jan 8, 2020 at 12:18 PM Robin Murphy <robin.murphy@xxxxxxx> wrote:
>
> On 07/01/2020 11:06 pm, Martin Blumenstingl wrote:
> > Decouple the check to see whether we want to enable devfreq for the GPU
> > from dev_pm_opp_set_regulators(). This is preparation work for adding
> > back support for regulator control (which means we need to call
> > dev_pm_opp_set_regulators() before dev_pm_opp_of_add_table(), which
> > means having a check for "is devfreq enabled" that is not tied to
> > dev_pm_opp_of_add_table() makes things easier).
>
> Hmm, what about cases like the SCMI DVFS protocol where the OPPs are
> dynamically discovered rather than statically defined in DT?
where can I find such an example (Amlogic SoCs use SCPI instead of
SCMI, so I don't think that I have any board with SCMI support) or
some documentation?
(I could only find SCPI clock and CPU DVFS implementations, but no
generic "OPPs for any device" implementation)


Martin