From: Bjorn Helgaas <helgaas@kernel.org>
To: Marcel Menzel <mail@mcl.gg>
Cc: linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
"Pali Rohár" <pali@kernel.org>
Subject: Re: Kernel 5.16.3 and above fails to detect PCIe devices on Turris Omnia (Armada 385 / mvebu)
Date: Thu, 24 Feb 2022 10:25:32 -0600 [thread overview]
Message-ID: <20220224162532.GA274119@bhelgaas> (raw)
In-Reply-To: <d4dd76f4-19e4-c35a-bd46-6e014707402e@mcl.gg>
On Thu, Feb 24, 2022 at 05:00:30PM +0100, Marcel Menzel wrote:
> +linux-pci
>
> Am 24.02.2022 um 14:52 schrieb Marcel Menzel:
> > Am 24.02.2022 um 14:09 schrieb Marcel Menzel:
> > > Hello,
> > >
> > > When upgrading from kernel 5.16.2 to a newer version (tried 5.16.3
> > > and 5.16.10 with unchanged .config), the Kernel fails to detect both
> > > my installed mPCIe WiFi cards in my Turris Omnia (newer version,
> > > silver case, GPIO pins installed again).
> > > I have two Mediatek MT7915 based cards installed. I also tried with
> > > one Atheros at9k and one ath10k based card, yielding the same
> > > result. On a Kernel version newer than 5.16.2, all cards aren't
> > > getting recognized correctly.
> > >
> > > Before 5.16.3 I also had to disable PCIe ASPM via boot aragument,
> > > otherwise the WiFi drivers would complain about weird device
> > > behaviors and failing to initialize them, but re-enabling it does
> > > not yield any different results.
Please try this commit, which is headed to mainline today:
https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?h=for-linus&id=c49ae619905eebd3f54598a84e4cd2bd58ba8fe9
This commit should fix the PCI enumeration problem. If you still have
to disable ASPM, that sounds like a separate problem that we should
also try to debug.
Bjorn
next prev parent reply other threads:[~2022-02-24 16:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <aa149fc8-c108-5f26-7ae6-5ccc845befd3@mcl.gg>
[not found] ` <a3b5c605-e8ac-1c6d-bbd6-c6fa587535bc@mcl.gg>
2022-02-24 16:00 ` Kernel 5.16.3 and above fails to detect PCIe devices on Turris Omnia (Armada 385 / mvebu) Marcel Menzel
2022-02-24 16:25 ` Bjorn Helgaas [this message]
2022-02-24 17:21 ` Pali Rohár
2022-02-25 13:12 ` Marcel Menzel
2022-02-25 13:27 ` Pali Rohár
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