linux-kernel - Re: [PATCH v6 0/4] PCI: Add support for resetting the Root Ports in a platform specific way

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Message-ID: <87ldm548u2.fsf@tethera.net>
Date: Tue, 23 Sep 2025 10:06:13 -0300
From: David Bremner <david@...hera.net>
To: devnull+manivannan.sadhasivam.oss.qualcomm.com@...nel.org
Cc: bhelgaas@...gle.com, cassel@...nel.org, heiko@...ech.de, krishna.chundru@....qualcomm.com, kwilczynski@...nel.org, linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, linux-rockchip@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org, lpieralisi@...nel.org, lukas@...ner.de, mahesh@...ux.ibm.com, mani@...nel.org, manivannan.sadhasivam@....qualcomm.com, oohall@...il.com, p.zabel@...gutronix.de, robh@...nel.org, wilfred.mallawa@....com, will@...nel.org
Subject: Re: [PATCH v6 0/4] PCI: Add support for resetting the Root Ports in
 a platform specific way

I have been testing this series on the 6.17 pre-releases, lightly
patched by the collabora [1] and mnt-reform [2] teams. I have been testing
on bare hardware, on MNT Research's pocket-reform product. I'm afraid I
can only offer CI level feedback, but in case it helps

1) The series now applies cleanly onto collabora's rockchip-devel branch
2) The resulting kernel boots and runs OK.
3) the resulting kernel still fails the "platform" pm_test [3] with
 "rockchip-dw-pcie a40c00000.pcie: Phy link never came up"

Of course there could be other reasons for (3), I don't know that much
about it.

I'm happy to test a newer version of the series if/when it exists.

d

[1]: https://gitlab.collabora.com/hardware-enablement/rockchip-3588/linux.git#rockchip-devel
[2]: https://salsa.debian.org/bremner/collabora-rockchip-3588#reform-patches
[3]: https://www.cs.unb.ca/~bremner/blog/posts/hibernate-pocket-12/