[U-Boot] [PATCH] net: fec: Avoid MX28 bus sync issue

Marek Vasut
2013-07-12T03:51:38Z

Hi,

> On Thu, Jul 11, 2013 at 8:18 PM, Fabio Estevam <festevam@gmail.com> wrote:
> > On Thu, Jul 11, 2013 at 8:03 PM, Marek Vasut <marex@denx.de> wrote:
> >> The MX28 multi-layer AHB bus can be too slow and trigger the
> >> FEC DMA too early, before all the data hit the DRAM. This patch
> >> ensures the data are written in the RAM before the DMA starts.
> >> Please see the comment in the patch for full details.
> >>
> >> This patch was produced with an amazing help from Albert Aribaud,
> >> who pointed out it can possibly be such a bus synchronisation
> >> issue.
> >>
> >> Signed-off-by: Marek Vasut <marex@denx.de>
> >> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
> >> Cc: Fabio Estevam <fabio.estevam@freescale.com>
> >> Cc: Stefano Babic <sbabic@denx.de>
> >
> > Excellent, managed to transfer 90MB via TFTP on mx28evk without a
> > single timeout.
> >
> > Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
>
> It's working here too.
>
> Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>

Nice to hear, thank Albert for finding this.

Best regards,
Marek Vasut