From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: "Marek Behún" <marek.behun@nic.cz>
Cc: "Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Bjorn Helgaas" <helgaas@kernel.org>,
linux-pci@vger.kernel.org,
"Antoine Ténart" <antoine.tenart@free-electrons.com>,
"Grégory Clement" <gregory.clement@free-electrons.com>,
"Miquèl Raynal" <miquel.raynal@free-electrons.com>,
"Victor Gu" <xigu@marvell.com>
Subject: Re: pcie-aardvark GEN2 link speed 2.5 GT/s instead of 5.0 GT/s
Date: Tue, 3 Jul 2018 17:05:09 +0200 [thread overview]
Message-ID: <20180703170509.33935a67@windsurf> (raw)
In-Reply-To: <20180703170059.6c5f8b47@dellmb.labs.office.nic.cz>
Hello,
+Victor Gu in Cc.
On Tue, 3 Jul 2018 17:00:59 +0200, Marek Beh=C3=BAn wrote:
> for our testing purposes we are trying various PCIe cards on our Armada
> 3720 board, but for some reason we cannot link the device at 5.0 GT/s.
> The board should support PCIe GEN 2, and when given an ASM1062 MiniPCIe
> SATA card, lspci -vvv prints:
> LnkCap: Port #1, Speed 5GT/s, Width x1, ...
> but
> LnkSta: Speed 2.5GT/s, Width x1, ...
>=20
> Is it possible to train the link with pcie-aardvark to 5.0GT/s?
I would need to do some research to be able to answer, but as a quick
reply, I would like to suggest to try the following patch series:
https://patchwork.ozlabs.org/project/linux-pci/list/?series=3D52819
Could you let us know if it helps or not ?
Best regards,
Thomas
--=20
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
prev parent reply other threads:[~2018-07-03 15:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-03 15:00 pcie-aardvark GEN2 link speed 2.5 GT/s instead of 5.0 GT/s Marek Behún
2018-07-03 15:05 ` Thomas Petazzoni [this message]
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