[U-Boot-Users] 855T FEC error

[Eli Brin]

Dear all,

Ethernet works OK.

The problem was that the TX_CLK from the LXT972 didn't get to the CPU.
Instead of 47Ohm resistors 47K Ohm were placed...

Sorry for the noise...


Best regards,
Eli Brin  




-----Original Message-----
From: Eli Brin [mailto:elib at rokonet.co.il] 
Sent: Monday, November 17, 2003 5:21 PM
To: 'u-boot-users at lists.sourceforge.net'
Subject: [U-Boot-Users] 855T FEC error

Dear all,

We have u-boot (1.0.0) running on our custom board :) 

Our board uses 855T and LXT972A.

Trying to do:

ACM=> bootp
Trying FEC ETHERNET
PHY type 0x13 pass 1 type PHY @ 0x0 pass 1 type LXT971
BOOTP broadcast 1
TX timeout
fec.c[134] fec_send: cycles: 100    status: 8c00  retry cnt: 0 

With a login analyzer we can see that after some time the TX_ER is raised
and TX_EN not.

The PHY seem to work OK.  The LED's light correctly and we can see the 25MHz
TX and TX MII clocks.

Reading the registers with u-boot's mii read, the registers are the same as
the TQM860L.

We use the same configuration as TQM855L.h, but we add -
CONFIG_8xx_GCLK_FREQ 50000000.

I don't think its related to this problem, but we cannot save the u-boot
environment.  It is saved to the flash at 4000c000 but does not appear after
reset following printenv.  I didn't have time to look into this issue yes.

Last but not least, I wish to thank you all, the information in this list
helped us very much.

Any suggestions ?

Thank you,
Eli Brin


  


 


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