topic Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found" in i.MX Processors

Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

cygnus — Wed, 13 Nov 2024 11:28:32 GMT

iMX8M Plus configured for Yocto on Variscite DART-MX8M-PLUS, booting from eMMC.

While starting the kernel it fails to ever finish booting as it loops, printing "IRQ eth_lpi not found" messages over and over. I suspect the issue might be with the device tree but do not know for certain and also do not know how this would be remedied.

Boot log is attached.

Thank you in advance for any guidance.

Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

Bio_TICFSL — Wed, 13 Nov 2024 14:05:58 GMT

Hello,

It could be problem with the connection, but maybe some @variscite could help.

regards

Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

eranmatityahu — Wed, 13 Nov 2024 17:07:51 GMT

Hi @cygnus.

If you are a Variscite customer, please register and create a ticket in the Variscite customer portal, and provide more details about the carrier board you are using: https://varisciteportal.axosoft.com/

Thanks,
Eran

Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

rkettridge — Thu, 10 Apr 2025 14:59:17 GMT

Sorry to pull up an old thread, but did you get a resolution to this? We're in exactly the same situation with exactly the same error messages. We are in touch with Variscite but if you have a quick solution, or even just a pointer, we might get there quicker.

Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

cygnus — Thu, 10 Apr 2025 15:13:21 GMT

Hi, sorry to leave the post unanswered. I did resolve the issue;

Variscite responded to me with the following after I described the issue to them:

"The message you are reporting is just an expected harmless warning.
You may want to edit the device tree and remove the second ethernet here
https://github.com/varigit/linux-imx/blob/lf-6.1.y_var03/arch/arm64/boot/dts/freescale/imx8mp-var-dart-dt8mcustomboard.dts#L172-L198"

Upon removing the &eqos and &fec blocks from the device tree, the warning message disappeared. Not sure why this seems to have prevented it from booting.

Hopefully this helps.

Re: Yocto iMX8M Plus boot kernel loop with "eth_lpi not found"

rkettridge — Thu, 10 Apr 2025 15:42:58 GMT

Thanks for the quick reply. In our case we do have both Ethernet devices but one is not being seen. As you say, it’s odd it stops it booting. Shall continue discussions with Variscite support.

Thanks again. The device tree link may come in handy.