From: Domen Puncer <domen.puncer@telargo.com>
To: RonLee <rlee@osii.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: mpc5200 linux 2.4 wakeup interrupt problem
Date: Mon, 23 Apr 2007 08:27:06 +0200 [thread overview]
Message-ID: <20070423062706.GW18236@moe.telargo.com> (raw)
In-Reply-To: <10111122.post@talk.nabble.com>
On 20/04/07 15:07 -0700, RonLee wrote:
>
> Hello,
>
> I am running linux on a mpc5200 chip and Im having problems with the
> mpc5200's simple and wakeup interrupts. The version of Linux I am starting
> with is linuxppc_2_4_devel_1_0_0 from Denx. Modifications have been made to
> the kernel, but none for enabling the wakeup register set and/or the wakeup
> interrupts.
>
> Does a patch exist to enable this behavior? Can anyone point me in the
> right direction if I would like to enable the wakeup interrupts myself?
>
> I noticed the behavior when attempting to write a device driver to interface
> with the psc1_4 pin on the mpc5200 chip. I am able to get the chip to
> generate interrupts, but when the interrupts occur I get the following error
> message in /proc/kmsg "Unhandled interrupt c, disabled". After getting this
> error, I installed an interrupt handler on IRQ 12 (hex c). This caused the
> kernel to lock up.
Maybe you forgot to acknowledge the IRQ (and so it always reenters your
handler). For gpio wakeup interrupts see wkup_istat (MBAR+0xc24).
HTH
Domen
>
> Thanks for any help,
> -Ron
prev parent reply other threads:[~2007-04-23 6:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-20 22:07 mpc5200 linux 2.4 wakeup interrupt problem RonLee
2007-04-23 6:27 ` Domen Puncer [this message]
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=20070423062706.GW18236@moe.telargo.com \
--to=domen.puncer@telargo.com \
--cc=linuxppc-embedded@ozlabs.org \
--cc=rlee@osii.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.