i.MX 8M Plus and RTL8211F
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Hi NXP Engineer
In my design refer to NXP EVK, imx8m plus + RTL8211F is used.
5 PCBs are producted, and only 1 PCB ‘s network card had problem.
as below, when ifconfig, only lo
but when ifconfig -a , eth0 is shown.
The communicaiont is failure for PC and RTL 8211.
the remaining 4 PCBs ,have eth0 when using config not ifconfig -a.
please confirm. Thanks a lot.
Best Regards!
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Hi @www1519,
I assume that your five boards are exactly the same schematic with exactly same part number for every component, am I right?
Seems that PHY is not responding maybe in time or speed, could you scope that the PHY is properly clock-fed and the MDIO lines actually have both-side communication?
Also, check for bootstrapping settings, did you populate the same bootstrap resistors?
Thank you

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Hi,
Thank you for your interest in NXP Semiconductor products,
Does the PHY still fail when you run this command?
$ ifconfig eth0 up
The IF hasn't the UP flag, that's why it doesn't appear on ifconfig output.
The ping will fail until it has an IP and a RUNNING flag.
Regards
