* Mark Rutland [off-list ref] [170619 05:25]:

On Fri, Jun 16, 2017 at 05:07:40PM -0700, Florian Fainelli wrote:

quoted

This is helpful in making SoC-specific power management code become true drivers
that can be shared between different architectures.

Could you elaborate on what this is needed for?

My understanding was that on 32-bit, this was to handle idle / suspend
cases, whereas for arm64 that should be handled by PSCI.

what exactly do you intend to use this for?

Well idle / suspend can have multiple needs such as running
core while DDR is in self-refresh mode and saving and restoring
of some context registers in that state.

Also clock drivers may need this to reprogram some core clocks.

Regards,

Tony