linux-kernel - Re: [PATCH 3/5] PCI: dwc: Remove MSI/MSIX capability if iMSI-RX is used as MSI controller

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Message-ID: <aTDjihgJgKAw1nis@google.com>
Date: Wed, 3 Dec 2025 17:27:38 -0800
From: Brian Norris <briannorris@...omium.org>
To: Qiang Yu <qiang.yu@....qualcomm.com>
Cc: Shawn Lin <shawn.lin@...k-chips.com>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Jingoo Han <jingoohan1@...il.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 3/5] PCI: dwc: Remove MSI/MSIX capability if iMSI-RX is
 used as MSI controller

On Fri, Nov 28, 2025 at 01:57:11AM -0800, Qiang Yu wrote:
> On Fri, Nov 21, 2025 at 12:04:09PM +0800, Shawn Lin wrote:
> > 在 2025/11/21 星期五 1:00, Manivannan Sadhasivam 写道:
> > Could you please help your IP version with below patch?
> > It's in hex format, you could convert each pair of hex
> > characters to ASCII, i.g, 0x3437302a is 4.70a. The reason
> > is we asked Synopsys to help check this issue before, then
> > we were informed that they have supported it at least since
> > IP version 6.0x. So we may have to limit the version first.
> >
> 
> Hi Shawn,
> 
> I checked the IP version of PCIe core on glymur, it is 6.00a (0x3630302A)
> and iMSI-RX still can't generate MSI for rootport.

Same here, I have chips with 0x3630302A / 6.00a, and MSI does not work
for the root port. This series tests out fine for me, so:

Tested-by: Brian Norris <briannorris@...omium.org>