[U-Boot] [linux-sunxi] Re: [PATCH 02/12] sunxi: simplify ACTLR.SMP bit set #ifdef

[Maxime Ripard]

On Fri, Jan 13, 2017 at 08:28:07AM +0000, André Przywara wrote:
> On 13/01/17 08:09, Vishnu Patekar wrote:
> Hi Vishnu,
> 
> > Even for the single core cortex-a7, SMP bit should be set before
> > enabling MMU and cache.
> > 
> > Reference: Cortex A7 r0p5 TRM. section 4.3.31.
> 
> Ah, good point, thanks for the heads up. I was misled by the SMP name
> when answering Icenowy.
> So it's about coherency in general and we need the bit for TLBs and
> caches to work as well.
> Let me check what that means for the other SoCs and whether we need to
> rename the config symbol then.

If we still needs it, x86 has a CONFIG_SMP symbol, that would be
better to just leverage that.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 801 bytes
Desc: not available
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20170116/3d9a3e22/attachment.sig>