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 marex@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 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.
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.
btw. the original TFTP had size limit of 32MB, aren't you hitting this?
Best regards, Marek Vasut