| PCI bus bridges have standardized Device Tree bindings: | |
| PCI Bus Binding to: IEEE Std 1275-1994 | |
| http://www.openfirmware.org/ofwg/bindings/pci/pci2_1.pdf | |
| And for the interrupt mapping part: | |
| Open Firmware Recommended Practice: Interrupt Mapping | |
| http://www.openfirmware.org/1275/practice/imap/imap0_9d.pdf |