From: David Hawkins <dwh@ovro.caltech.edu>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] R: Booting with attached BDI but not alone (onlyICTRL remained in BDI cfg)
Date: Wed, 12 Sep 2007 13:09:36 -0700 [thread overview]
Message-ID: <46E84780.3080602@ovro.caltech.edu> (raw)
In-Reply-To: <F1F6EC0C8B75034F9E3A79FC85122E8E2649BF@aquib01a>
DI BACCO ANTONIO - technolabs wrote:
> > Is there any chance that the board is broken? I think I connected a
> wiggler to the BDM port in the > wrong position for only a while. But
> why should it boot with attached BDI if is it broken?
>
> I discovered that when the board is powered on, if I try to connect BDI
> connector trying to touch only pin 1 and 2 (vfls0 and sreset) the board
> starts. I suspect that bdi pulls up the sreset in some way.
The JTAG/COP header *should* have the appropriate
pull-ups for HRESET#, and SRESET# *on the board*.
These are open-drain signals.
However, there could be a mistake on your board,
and perhaps the BDI2000 has weak pull-ups on the
BDI 'just in case' the pull-ups are missing on
the target.
Check your board schematic.
Dave
next prev parent reply other threads:[~2007-09-12 20:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-10 15:53 [U-Boot-Users] Booting with attached BDI but not alone DI BACCO ANTONIO - technolabs
2007-09-10 20:17 ` David Hawkins
2007-09-10 20:19 ` Ben Warren
2007-09-10 20:22 ` Wolfgang Denk
2007-09-11 8:33 ` w.wegner at astro-kom.de
2007-09-11 16:01 ` [U-Boot-Users] Booting with attached BDI but not alone (only ICTRL remained in BDI cfg) DI BACCO ANTONIO - technolabs
2007-09-11 16:16 ` [U-Boot-Users] Booting with attached BDI but not alone (onlyICTRL " DI BACCO ANTONIO - technolabs
2007-09-12 10:47 ` DI BACCO ANTONIO - technolabs
2007-09-12 19:59 ` [U-Boot-Users] R: " DI BACCO ANTONIO - technolabs
2007-09-12 20:09 ` David Hawkins [this message]
2007-09-13 10:57 ` DI BACCO ANTONIO - technolabs
2007-09-13 13:12 ` Andreas Schweigstill
2007-09-13 13:23 ` [U-Boot-Users] R: Booting with attached BDI butnot " DI BACCO ANTONIO - technolabs
2007-09-13 14:14 ` Andreas Schweigstill
2007-09-13 14:24 ` Jerry Van Baren
2007-09-13 15:15 ` Andreas Schweigstill
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=46E84780.3080602@ovro.caltech.edu \
--to=dwh@ovro.caltech.edu \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox