Re: legacy PCI device behind a bridge not getting a valid IRQ on imx host controller

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On Thu, Aug 29, 2024 at 05:43:42PM -0400, Frank Li wrote:
> On Thu, Aug 29, 2024 at 04:22:35PM -0500, Bjorn Helgaas wrote:
> > On Wed, Aug 28, 2024 at 02:40:33PM -0700, Tim Harvey wrote:
> > > Greetings,
> > >
> > > I have a user that is using an IMX8MM SoC (dwc controller) with a
> > > miniPCIe card that has a PEX8112 PCI-to-PCIe bridge to a legacy PCI
> > > device and the device is not getting a valid interrupt.
> >
> > Does pci-imx6.c support INTx at all?
> 
> Yes, dwc controller map INTx message to 4 irq lines, which connect to GIC.
> we tested it by add nomsi in kernel command line.

Thanks, Frank.  Can you point me to the dwc code where this happens?
Maybe I can remember this for next time or add a comment to help
people find it.

Bjorn




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