How to assign interrupt number in device tree for each pcie and pci devices connected to main host bridge via pcie switch and pcie-pci bridge ? Is it require to do it manually or it will automatically assigned ?
For PCI or PCI-E devices connected via PCI or PCI-E bus, it is not required to declare each and every node in the device tree. The devices which are not connected to the PCI/PCI-E bus, need to be declared.