Dear Marek Vasut,
On 03/13/2013 05:19 PM, Marek Vasut wrote:
Dear Hector Palacios,
Dear Marek Vasut,
On 03/13/2013 11:58 AM, Marek Vasut wrote:
Dear Hector Palacios,
Hello,
When doing large TFTP downloads (files bigger than 10MiB) on my MX28 platform I'm sometimes experiencing pauses and timeouts. U-Boot will eventually restart the transmission and sometimes may successfully complete the download, but other times it won't. On my platform it was somewhat mitigated (but not resolved) by reverting this patch from Marek:
commit 67449098a86be18cbdb27345bebe8da57e5d8899 Author: Marek Vasut marex@denx.de Date: Wed Aug 29 03:49:50 2012 +0000
FEC: Rework the TX wait mechanismThe problem is reproducible in Freescale's MX28EVK. The larger the file, the more chances to see the problem. Please try with 50MiB files or larger. Has anybody else seen it?
On an old U-Boot v2009 TFTP transmission was twice slower than with v2013, but didn't suffer from this.
What version of u-boot do you use ? It was resolved in recent versions.
I'm using v2013.01. Could you please point me to the commit(s) that solve it? The commits I see on drivers/net/fec_mxc.c after v2013.01 are from Troy Kisky and don't seem to address this.
commit c0b5a3bbb0cd40a6b23b7b07e2182a5bcdc8c31c Author: Marek Vasut marex@denx.de Date: Wed Aug 29 03:49:51 2012 +0000
FEC: Replace magic contantsand the three before this one. Is your PHY operating correctly? This fixed the hangs on multiple MX28 platforms for me.
v2013.01 contains all these patches but I was able to reproduce this both on my platform and on the mx28evk. My problem is not a hang, but TFTP pauses (1 to 3 seconds) and timeouts: ################################################################# #####################################################T T T T T T
At first I thought it was my platform's PHY (Micrel KSZ8031) but I also see it on mx28evk.