[U-Boot-Users] U-boot not starting - sometimes
Hi,
We have encountered on some of our 405EP boards that when powered on nothing happens - U-boot doesn't start. Powering off and trying again it "suddenly" works...
When caught in this "not-booting-state", it doesn't even help to activate the reset-pin. However, in the attached serial console, some giberish characters do come out (5-10 chars.).
Now, having seen problems with the memory chips on some of my boards, I was wondering if this could be a similar problem?
Best regards, Martin Egholm
In message dm6ggk$ut3$1@sea.gmane.org you wrote:
Now, having seen problems with the memory chips on some of my boards, I was wondering if this could be a similar problem?
Check your voltages (and their power-on sequence) and especially the clocks.
Best regards,
Wolfgang Denk
Hi,
Now, having seen problems with the memory chips on some of my boards, I was wondering if this could be a similar problem?
Check your voltages (and their power-on sequence) and especially the clocks.
We have tried with two different power-up sequences, and have the same result... Going even more OT: Do you actually know the most optimal powerup sequence for the 405EP? Because the datasheat doesn't specify...
Thx, Martin
participants (2)
-
Martin Egholm Nielsen -
Wolfgang Denk