> Yes, all AmigaOne boards have physical PCI slots (at least 1). The different > interrupt routing wasn't a problem so far, as the firmware writes the IRQ > number > to the interrupt line register of every PCI device.
The code in the kernel that retreives the interrupt that way is clearly marked as a fishy workaround for bogus firmwares :-) But I'm not going to reject things based on that, it will work for simple board using really only legacy interrupts like yours... > Currently the kernel reads the IRQ number from this register, if there is no > interrupt mapping property. I know that it's not a good idea to rely on kernel > fallback behavior, but it makes a lot of things easier in this case. Sort-of. As long as it's really 8259 interrupts, I suppose it's acceptable. > > For the flattened device tree, I think we've settled on the convention > > that every node with an IRQ connection should have both the > > interrupt-parent and interrupts properties. (ie. don't rely on the > > parent node's interrupt-parent property.) > Even for ISA devices? I disagree with Grant here. Especially in simple ISA cases like that, there's really no point in bloating the device-tree. > > Can this PCI device be probed? Typically PCI devices don't get added > > to the flattened device tree because PCI is a probeable bus. > Yes, it can be probed. I thought it would be a good idea to include it, > because the IDE controller operates in legacy mode. I planned to specify the > two legacy interrupts in this node (as you can see), but the kernel didn't > like > them. Well, the kernel just didn't make use of them I'd say :-) But that can probably be fixed with the appropriate hacks. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
