Dear Hector Palacios, > Dear Marek Vasut, > > On 03/13/2013 07:10 PM, Marek Vasut wrote: > > Dear Hector Palacios, > > > >> Dear Marek Vasut, > >> > >> On 03/13/2013 05:52 PM, Marek Vasut wrote: > >>> Dear Hector Palacios, > >>> > >>>> 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 <ma...@denx.de> > >>>>>>>> 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 <ma...@denx.de> > >>>>> 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. > >>> > >>> Do you use PHYLIB (see configs/sc_sps_1.h for example)? Also check if > >>> your transceiver mode is not misconfigured. Moreover, see > >>> board/denx/m28evk/spl_boot.c fecmxc_mii_postcall(), maybe you also need > >>> to program some registers of the PHY (V11 and V10 prototypes used > >>> KSZ8051)? > >> > >> No I don't use PHYLIB. My platform is based on Freescale's mx28evk (not > >> DENX's m28evk). I saw fecmxc_mii_postcall() and I do a similar thing > >> because of my phy model KSZ8031, but as I said the pauses and timeouts > >> occur in both platforms (mx28evk uses a different PHY: SMSC LAN8720a). > >> > >> Are you able to download a 50MiB file via TFTP several times without any > >> problem on m28evk? > > > > Yes. > > Interesting. What PHY does m28evk platform have? I was thinking on a > problem of the fec driver given that it can be reproduced in the mx28evk > and in my platform, with different PHYs, but if it is not reproducible in > m28evk I'll need to recheck the platform code.
KSZ8021 I think. Did Fabio not verify the code works on his MX28EVK ? > > btw. the original TFTP had size limit of 32MB, aren't you hitting this? > > No it's not a server problem. I can sometimes transfer bigger files without > problems. Other times it just pauses and/or timeouts after 3 or 4MiB. > > Thank you Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
