[PATCH 4/4] ARM: dts: Add initial support for Alpine platform

[Saeed Bishara]

On 26 January 2015 at 16:32, Arnd Bergmann <arnd at arndb.de> wrote:
> On Monday 26 January 2015 16:14:11 Tsahee Zidenberg wrote:
>> On 26 January 2015 at 13:15, Arnd Bergmann <arnd at arndb.de> wrote:> +* CPU
>> node:
>>
>> > > +
>> > > +The Alpine platform includes cortex-a15 cores.
>> > > +enable-method: must be "annapurna-labs,alpine-smp" to allow smp  [1]
>> >
>> > Any reason for not using PSCI on this platform?
>> >
>> >
>> PSCI is in the roadmap, but not supported by current firmware.
>
> As your initial submission is very minimal regarding driver support,
> would it be sensible to wait for the firmware to catch up then?
Arnd,
there are already systems with this soc that shipped without  PSCI firmware.
and we still would like to support mainline kernel on those systems
without forcing firmware upgrade.
saeed

>
> That way you lose SMP support for the moment but could still work
> on adding the device drivers while testing in uniprocessor mode and
> then we will see if your firmware is ready once there are more
> drivers upstream. Once the firmware has PSCI working, it will all
> just work without the need for extra devices in DT or the custom
> SMP operations.
>
>         Ard