On Tue, Aug 12, 2008 at 10:00:40AM -0400, Steven A. Falco wrote: > Benjamin Herrenschmidt wrote: > > > >> 1. IDE status read does not work. (But am I understand correctly > >> that IDE works well if IRQ is unspecified? Then this is hardly > >> an issue.) > >> 2. IDE interrupt comes when it should not. I'd recommend to use > >> oscilloscope to find out what is happening there, that is, if > >> the drive actually deasserts its irq line after status read. > >> If so, than this could be a PIC problem. > >> > >> What is the platform on which you're observing the issue, btw? > >> > > > > Another possibility is that you got the wrong interrupt number > > in the device-tree... > > > > Ben. > > > > The platform is the AMCC Sequoia board. We've built a little adapter to > connect a compact flash card to the processor bus. I believe the > interrupt selection in the device tree is correct, and I've checked over > the u-boot settings for the IRQ line (active high, level sensitive).
IDE IRQs are active-low. -- Anton Vorontsov email: [EMAIL PROTECTED] irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
