how to enable suspend to ram for arm-64 bits

[Sudeep Holla]

On 18/10/16 11:45, Mark Rutland wrote:
> On Tue, Oct 18, 2016 at 12:00:02PM +0200, Pavel Machek wrote:
>>>> 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.
>
> Quite frankly, copying hundreds of lines of board-specific code
> (including assembly that won't compile) is unlikely to help.
>
> So far arm64 requires well-defined, standard, reusable interfaces (e.g.
> PSCI). That cleanly separates concerns (e.g. anyone can implement the
> backend without mandatory changes to the kernel), and keeps things
> maintainable.
>
> ARM publishes and maintains the ARM Trusted Firmware [1], which anyone
> can use and build atop of. It's open source (three-clause BSD with DCO),
> and accepts board ports. You can have a completely open stack,
> regardless of whether part of that stack is firmware.
>

I think you missed to add the link[1]

-- 
Regards,
Sudeep

[1] https://github.com/ARM-software/arm-trusted-firmware