Sorry to intervene but just trying to learn from your comments. > You have plenty, and that's the whole of your device space. *All of it*. So > just take the base address of your PCIe controller, and be done with > it. but isn't few of PCIe controller's registers itself are mapped here(base address). So, how can we use this address for MSI? Or you said from base address of PCIe controller, find an offset that can be used as MSI address? Thanks Amit. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html