From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabio Estevam Date: Thu, 11 Jul 2013 20:18:53 -0300 Subject: [U-Boot] [PATCH] net: fec: Avoid MX28 bus sync issue In-Reply-To: <1373583784-7129-1-git-send-email-marex@denx.de> 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 8:03 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