From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Pereira da Silva Date: Fri, 12 Jul 2013 00:41:59 -0300 Subject: [U-Boot] [PATCH] net: fec: Avoid MX28 bus sync issue In-Reply-To: References: <1373583784-7129-1-git-send-email-marex@denx.de> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Thu, Jul 11, 2013 at 8:18 PM, Fabio Estevam wrote: > On Thu, Jul 11, 2013 at 8:03 PM, Marek Vasut 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 >> Cc: Albert ARIBAUD >> Cc: Fabio Estevam >> Cc: Stefano Babic > > Excellent, managed to transfer 90MB via TFTP on mx28evk without a > single timeout. > > Tested-by: Fabio Estevam It's working here too. Tested-by: Alexandre Pereira da Silva