Re: exynos5422-odroid-xu3: MCPM: only 6 of 8 CPUs coming online

[Joonyoung Shim <jy0922.shim@samsung.com>]

Hi,

Kevin Hilman <khilman <at> kernel.org> writes:

> 
> Hi Abhilash,
> 
> Abhilash Kesavan <a.kesavan <at> samsung.com> writes:
> 
> > I had noticed a similar issue where only 6 cores would come up during
> > development on 5420. This was because there was a check in our u-boot
> > secondary boot-up path which would put a core into WFI if a flag was
> > not present and hence fail to boot. I wonder if it is the same
> > situation in your case too.
> > Is the u-boot for odroid-xu3 publically available or can you check if
there is any such code present in your
> secondary bring-up path.
> 
> I'm using the hardkernel u-boot[1], branch: odroidxu3-v2012.07.  I'm
> currently using the pre-built binaries that are in the
> sd_fuse/hardkernel directory of that branch, but I can rebuild u-boot if
> needed.
> 
> I'm not very familiar with u-boot, but if f you have some pointers where
> to start looking in that code, that would be helpful.
> 
> Kevin
> 
> [1] https://github.com/hardkernel/u-boot.git
> 
> 

It seems to need magic code.

Please refer
https://github.com/abhijeet-dev/linux-samsung/commit
/553b7f40465ab4fad6c270f289cd4780942f7fae

Thanks.