Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features

[Santosh Shilimkar]

On 6/2/2016 5:34 AM, Nishanth Menon wrote:
> On 06/01/2016 06:26 PM, Santosh Shilimkar wrote:
> [...]
> > > > Side note on LPAE:
> > > > For our current device tree and u-boot, LPAE is mandatory to bootup
> > > > for current Keystone boards - but this is not a SoC requirement,
> > > > booting without LPAE/HIGHMEM results in non-coherent DDR accesses.
> > >
> > > This sounds like a regression, I thought we had this working when
> > > keystone was initially merged and we got both the coherent and
> > > non-coherent mode working with the same DT.
> > Yes and it works. The coherent memory space itself is beyond 4GB so
>
> Hmm... True, I just tested next-20160602 with mem_lpae set to 0 in
> u-boot and it seems to boot just fine.
>
> > I don't understand a requirement of having coherent memory without
> > LPAE.
>
> Looks like a messed up description on my end, Looks like I have to
> update my automated test framework to incorporate the manual steps
> involved.
No worries. Am glad you got your setup working.

Regards,
Santosh