AW: Unhandled fault: imprecise external abort (0x1406) when loading xhci_pci.ko - uPD720202, PEX8605, iMX6Q and linux-4.19.25

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> 
> Occasionally we see crash at boot too without even reaching stage of
> loading xhci-pci.ko driver.
> 
> Log is below. Is this can be because of again uPD connected on PCIe
> bus (through PCIe switch)?
> 
> [    8.263117] Unhandled fault: imprecise external abort (0x1406) at 0xfaf06a5b

Looks like a hardware issue on your board, like PCIe accesses sometimes fail.
Out of my scope, sorry.

Anyway, try with PM disabled.

Best regards
Carsten




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