Re: [PATCH v7 2/3] PM / Domains: Add support for 'required-opps' to set default perf state

On Thu, Aug 12, 2021 at 1:46 PM Ulf Hansson [off-list ref] wrote:

On Thu, 12 Aug 2021 at 13:28, Rajendra Nayak [off-list ref] wrote:

quoted

Some devices within power domains with performance states do not
support DVFS, but still need to vote on a default/static state
while they are active. They can express this using the 'required-opps'
property in device tree, which points to the phandle of the OPP
supported by the corresponding power-domains.

Add support to parse this information from DT and then set the
specified performance state during attach and drop it on detach.
runtime suspend/resume callbacks already have logic to drop/set
the vote as needed and should take care of dropping the default
perf state vote on runtime suspend and restore it back on runtime
resume.

Signed-off-by: Rajendra Nayak <redacted>

Reviewed-by: Ulf Hansson <redacted>

All three patches applied as 5.15 material, thanks!