netdev - request for help using mv88e6xxx switch driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID:
 <IA1PR15MB6008DCCD2E42E0B17ACBC974B588A@IA1PR15MB6008.namprd15.prod.outlook.com>
Date: Wed, 7 May 2025 14:57:32 +0000
From: Steve Broshar <steve@...merwirelessmedtech.com>
To: Andrew Lunn <andrew@...n.ch>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>
Subject: request for help using mv88e6xxx switch driver

Hi,

We are struggling to get ethernet working on our newly designed, custom device with a imx8mn processor and a mv88e6230 switch ... using the mv88e6xxx driver. We have worked on it for weeks, but networking is not functional. I don't know where to find community support or maybe this is the community. I'm used to more modern things like websites; not email lists.

So that you understand the context at least a little: we have MDIO comms working, but the network interface won't come up. I get encouraging messages like:

	[    6.794063] mv88e6085 30be0000.ethernet-1:00: Link is Up - 1Gbps/Full - flow control off
	[    6.841921] mv88e6085 30be0000.ethernet-1:00 lan3 (uninitialized): PHY [mv88e6xxx-0:03] driver [Generic PHY] (irq=POLL)

But near the end of boot I get messages:

	[   11.889607] net eth0: phy NOT found
	[   11.889617] fec 30be0000.ethernet eth0: A Unable to connect to phy
	[   11.892275] mv88e6085 30be0000.ethernet-1:00 lan4: failed to open master eth0

And trying to bring it up gives:

	# ifconfig eth0 up
	SIOCSIFFLAGS: No such device 
	# ifconfig lan3 up
	SIOCSIFFLAGS: No such device

For reference, if I specify an interface that is not configured (not in the device tree), I get a slightly different message that hints that eth0 and lan3 are at least partially setup:

	# ifconfig xxx up
	xxx: ERROR while getting interface flags: No such device

Can you offer any advice for resolving the issue? Community sites to post to, instructions to read, videos to watch ...

Thanks for your time.

Steve Broshar
Palmer Wireless Medtech