From: Bjorn Helgaas <helgaas@kernel.org>
To: Frank Li <Frank.li@nxp.com>
Cc: Tim Harvey <tharvey@gateworks.com>,
Richard Zhu <hongxing.zhu@nxp.com>,
Lucas Stach <l.stach@pengutronix.de>,
linux-pci@vger.kernel.org
Subject: Re: legacy PCI device behind a bridge not getting a valid IRQ on imx host controller
Date: Thu, 29 Aug 2024 17:00:05 -0500 [thread overview]
Message-ID: <20240829220005.GA81596@bhelgaas> (raw)
In-Reply-To: <ZtDrjl3b8yhumk+A@lizhi-Precision-Tower-5810>
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
next prev parent reply other threads:[~2024-08-29 22:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-28 21:40 legacy PCI device behind a bridge not getting a valid IRQ on imx host controller Tim Harvey
2024-08-29 21:22 ` Bjorn Helgaas
2024-08-29 21:43 ` Frank Li
2024-08-29 22:00 ` Bjorn Helgaas [this message]
2024-08-29 22:21 ` Tim Harvey
2024-08-30 15:52 ` Frank Li
2024-08-30 16:11 ` Tim Harvey
2024-08-30 15:49 ` Frank Li
2024-08-30 16:06 ` Manivannan Sadhasivam
2024-08-30 16:15 ` Bjorn Helgaas
2024-08-30 1:50 ` Hongxing Zhu
2024-08-30 16:03 ` Tim Harvey
2024-08-30 16:14 ` Frank Li
2024-09-06 19:37 ` Tim Harvey
2024-09-06 19:58 ` Bjorn Helgaas
2024-09-10 16:50 ` Tim Harvey
2024-09-10 23:04 ` Bjorn Helgaas
2024-09-12 23:28 ` Tim Harvey
2024-09-23 17:56 ` Tim Harvey
2024-09-26 22:30 ` Bjorn Helgaas
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