[U-Boot] Hang when enabling DCache on a iMX6 board

[Boris Brezillon <boris.brezillon@free-electrons.com>]

Hi Anatolij,

On Tue, 3 Feb 2015 20:17:36 +0100
Anatolij Gustschin <agust@denx.de> wrote:

> Hello Boris,
> 
> On Tue, 3 Feb 2015 19:39:16 +0100
> Boris Brezillon <boris.brezillon@free-electrons.com> wrote:
> 
> > Hello,
> > 
> > I'm currently porting the SECO iMX6 uQ7 board to mainline, but I'm
> > facing a hang when enabling DCache (CONFIG_SYS_DCACHE_OFF undefined).
> > Last week I asked on the #u-boot chan if anybody already encountered
> > such a bug, and someone (named malik) suggested to check my DDR timings.
> > 
> > After a few more tests and checks I decided to port my changes to an
> > older version (2014.04), and it apparently works.
> > I haven't bisected to find the exact commit that makes it fails yet,
> > but before doing that I'd like to know if anyone else already
> > experienced this kind of problem, or has any idea of what could cause
> > this.
> 
> I've seen similar problem when porting to v2014.04. The problem
> disappeared after including the mx6_common.h in the board config
> file. This header file contains some errata configs, so please try
> with
> 
> #include "mx6_common.h"
> 
> in your board config file.

Indeed, it works! \o/

I don't know how, but I somehow included this header when backporting
my work to v2014.04, which explains why it was working on this version.

Anyway, thanks a lot for your answer (I owe you one).

Best Regards,

Boris

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com