On Tue, 2008-03-04 at 21:59 +0100, Segher Boessenkool wrote: > >> More generally, the target interrupt descriptors (sense values, in > >> particular) in a device tree interrupt map describe the interrupts as > >> seen on the target interrupt controller, *not* as seen on this > >> (source) > >> interrupt domain. This should be obvious, but since the source > >> interrupt > >> descriptor for PCI doesn't have a sense value (it's always level low, > >> after all), it can be confusing. Well, interrupts always are > >> confusing > >> :-) > > > > Sure. But if your stupid bridge sticks a not gate between the PIRQ > > input > > and the UIC (interrupt controller), effectively, the UIC sees a > > reversed > > polarity. Thus you need to put in your interrupt map a reversed > > polarity > > information for the UIC interrupt specifiers. > > That's what I said, isn't it? :-)
Maybe, I wasn't sure I decrypted you properly :-) Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
