From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hector Palacios Date: Wed, 13 Mar 2013 17:31:41 +0100 Subject: [U-Boot] TFTP pause and timeout on MX28 platforms In-Reply-To: <201303131719.32450.marex@denx.de> References: <51404AFE.6000502@digi.com> <201303131158.36796.marex@denx.de> <51409FAB.3080400@digi.com> <201303131719.32450.marex@denx.de> Message-ID: <5140A9ED.7060901@digi.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 >>>> Date: Wed Aug 29 03:49:50 2012 +0000 >>>> >>>> FEC: Rework the TX wait mechanism >>>> >>>> The 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 > Date: Wed Aug 29 03:49:51 2012 +0000 > > FEC: Replace magic contants > > and 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. -- H?ctor Palacios