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

Fabio Estevam
2013-07-11T23:18:53Z

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>