On Sun, Mar 09, 2025 at 11:10:58PM +0000, Luís Mendes wrote: > All logs presented were obtained from a SolidRun A388 ClearFog Base, > if more detailed PCI logs are needed I have the other machine, the > Armada Duo that has 2 PCIe slots and handles an AMD RX 550 GPU. Just > let me know. > > - Complete dmesg log, booted with "pci=nomsi" is available here: > https://pastebin.com/wDj0NGFN > - Complete output of "sudo lspci -vv" is available here: > https://pastebin.com/f4yHRhLr > - Contents of /proc/interrupts is available here: https://pastebin.com/ejDUuhbJ > - Output of "grep -r . /proc/irq/" is available here: > https://pastebin.com/4jvFBBhy Thank you very much for these. It looks like the only PCI device is 01:00.0: [1ac1:089a], a Coral Edge TPU, and I don't see any evidence of a driver for it or any IRQ usage. Do you have any other PCI device you could try there? Something with a driver that uses interrupts? Not critical right now, but I'm puzzled by this part of the dmesg log: mvebu-pcie soc:pcie: host bridge /soc/pcie ranges: mvebu-pcie soc:pcie: MEM 0x00f1080000..0x00f1081fff -> 0x0000080000 mvebu-pcie soc:pcie: MEM 0x00f1040000..0x00f1041fff -> 0x0000040000 mvebu-pcie soc:pcie: MEM 0x00f1044000..0x00f1045fff -> 0x0000044000 mvebu-pcie soc:pcie: MEM 0x00f1048000..0x00f1049fff -> 0x0000048000 pci_bus 0000:00: root bus resource [mem 0xf1080000-0xf1081fff] (bus address [0x00080000-0x00081fff]) pci_bus 0000:00: root bus resource [mem 0xf1040000-0xf1041fff] (bus address [0x00040000-0x00041fff]) pci_bus 0000:00: root bus resource [mem 0xf1044000-0xf1045fff] (bus address [0x00044000-0x00045fff]) pci_bus 0000:00: root bus resource [mem 0xf1048000-0xf1049fff] (bus address [0x00048000-0x00049fff]) pci_bus 0000:00: root bus resource [mem 0xe0000000-0xe7ffffff] The first four mvebu-pcie lines make good sense and match the first four pci_bus lines. But I don't know where the [mem 0xe0000000-0xe7ffffff] aperture came from. It should be described in the devicetree, but I don't see it mentioned in the /soc/pcie ranges. Can you include the devicetree as well?