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
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
