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[ts-7000] serious external USB instability issue

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Subject: [ts-7000] serious external USB instability issue
From: "jnavarro.groups21" <>
Date: Tue, 22 Jun 2010 19:09:47 -0000
        Hi.  I have an important problem with a TS-7553 board.  I have found 
this problem with SPI flash linux, NAND and SD Card images ( 
ts-arm-sbc/ts-7500-linux/binaries/ts-images/2gbsd-eclipse-may252010.dd.bz2 and 
2gbsd-eclipse-jun012010.dd.bz2).

        What i have observed is that, when under write operations on a USB 
external memory attached to the TS-7553, the board reboots unexpectedly.  Look 
at attached example:  while i can create without problems a 100MB image on the 
external USB, a read/write operation like a cp reboots the board in seconds.

        Observe also that i'm using SPI flash linux.  The same behavior is 
observed in SD Card full debian linux.  And it is not a problem of the external 
USB memory: i have reproduced this behaviour with serveral memories.  Moreover, 
the board reboots when doing read/write operations on the two USB ports, but 
also on the Host USB port (seen when using g_file_storage module).

        This problem is reproduced with FAT and ext2 filesystems on the USB 
memory.

        Do you have any idea why this happens or how can i debug this for 
gathering more information??

        Thanks in advance.


////////////   EXAMPLE   ////////////////

>> TS-BOOTROM - built Jan  4 2010 15:26:01
>> Copyright (c) 2009, Technologic Systems
>> Booting from offboard SPI flash...
.
.
.
Finished booting in 1.75 seconds
Type 'tshelp' for help
# 
# cd /tmp
# mkdir kk1
# mount /dev/sda1 kk1 
# cd kk1
# 
# dd if=/dev/zero of=img.dd bs=1024 count=100000
100000+0 records in
100000+0 records out
# ls -lh
-rwxr-xr-x    1 root     root        97.7M Jun 22 00:24 img.dd

# cp img.dd img2.dd

>> TS-BOOTROM - built Jan  4 2010 15:26:01
>> Copyright (c) 2009, Technologic Systems
>> Booting from offboard SPI flash...
.
.
.
Finished booting in 1.75 seconds
Type 'tshelp' for help
# 

////////////   EOF   ////////////////



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