how to enable suspend to ram for arm-64 bits

[Lorenzo Pieralisi]

On Tue, Oct 18, 2016 at 12:00:02PM +0200, Pavel Machek wrote:
> Hi!
> 
> > >b. in arm64, if some platform has its own suspend flow,  couldn't it
> > >adopts arm/match-xxx to register its own global suspend method?
> > >
> > 
> > No, PSCI is highly recommended.
> 
> Relying on firmware for suspend on x86 was a great disaster, lets not
> repeat that mistake. arm32 has better powermanagement than x86 ever
> will (see Nokia N900 for example) -- feel free to copy that code from
> arm32.

Yes sure, feel free to copy my:

NACKed-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>

to all the resulting patches then. On ARM64 if he wants to implement
suspend-to-RAM his PSCI firmware will have to implement PSCI system
suspend method, end of this discussion.

By the way, why are you advising people on this subject ?

What do you know about the PSCI firmware interface to state what
you are saying above ?

Lorenzo