i.MX8MP eqos ethernet tx clock issue

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i.MX8MP eqos ethernet tx clock issue

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davideballestre
Contributor I

Hello,
I'm working on a custom carrier board mounting an IMX8MP connected with eQOS ethernet interface in RGMII mode to a Marvell 88E6176 switch.
My kernel is a custom NXP based linux 5.15.71 (NO custom modifications on ethernet section) with Yocto Kirkstone rootfs.
Sometimes in the middle of the startup I see IMX8MP ethernet TX clock in RGMII suddenly shutting down with no apparently motivation.
That leads to a hardware reset by watchdog with consequent reboot. This means that some kernel procedure fails and stuck on something.
Is there any reason for microprocessor to act like that?

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hello,

There is no reason to do that,or is problem of your board since in the EVK does not present this situation, but some of ethernet bugs were fixed in this release, so I strongly recommend to update to 6.1.22 kernel.

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

 

Regards

 

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