[RFC] ARM: EXYNOS: reset KFC cores when cpu is up

[Chanho Park]

Hello Javier,

> I believe of_machine_is_compatible("samsung,exynos5800") is preferred
> nowadays over soc_is_exynos5800().
>
> Now, is correct to do this for all Exynos5422/5800 based boards? AFAIU
> from the previous discussions, this behavior is specific to the Odroid
> XU3 so maybe of_machine_is_compatible("hardkernel,odroid-xu3") instead?
>
> I know this can affect other Exynos5800 boards that are shipped with a
> similar binary BL1/BL2 blobs that also use SPARE2 as a sync mechanism
> but maybe is better to add more exceptions later rather than do it for
> all Exynos5800?
>
> The Exynos5800 based Chromebook doesn't have this issue for example and
> all the 8 cores are brought up correctly.
>
> Having said that, I tested this patch on an Exynos5800 Peach Pi and all
> the 8 cores are up and also after a S2R so seems to be a no-op when the
> PMU_SPARE2 is not used for this.

Thanks for the testing. I'll find more proper way it could be applied
only for exynos5422 boards.

-- 
Best Regards,
Chanho Park