U-Boot Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Steven Scholz <steven.scholz@imc-berlin.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] "date reset" for MPC8xx
Date: Mon, 14 Apr 2003 15:16:50 +0200	[thread overview]
Message-ID: <3E9AB4C2.6020500@imc-berlin.de> (raw)

Hi there,

I think would should realy reset the MPC8xx's internal RTC when 
calling "date reset" or "rtc_reset" instead of "nothing to do".

Please find and consider the attached patch.

Background:

I have seen it several times, that the MPC8xx's internal RTC contains 
an invalid date, e.g. negative times (caused by no or low battery). 
That might result in dates before 1970-01-01 under Linux and that in 
turn confuses timeouts.

I've seen that udhcpc (from busybox) hangs in such cases!

For that reason u-boot should check for valid dates and do a 
rtc_reset() if nessesary.


Thanks,

Steven

---------

CHANGELOG:

* Patch by Steven Scholz, 14 Apr 2003:
   - reset_rtc() sets MPC8xx internal RTC back to 1970-01-01

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: mpc8xx_rtc.patch
Url: http://lists.denx.de/pipermail/u-boot/attachments/20030414/688eb3bf/attachment.txt 

             reply	other threads:[~2003-04-14 13:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-14 13:16 Steven Scholz [this message]
2003-04-14 13:41 ` [U-Boot-Users] "date reset" for MPC8xx Wolfgang Denk

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=3E9AB4C2.6020500@imc-berlin.de \
    --to=steven.scholz@imc-berlin.de \
    --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