netdev - imx8mp fec/eqos not working

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Date:   Thu, 21 Jul 2022 16:02:53 -0700
From:   Tim Harvey <tharvey@...eworks.com>
To:     netdev <netdev@...r.kernel.org>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Joakim Zhang <qiangqing.zhang@....com>
Subject: imx8mp fec/eqos not working

Greetings,

Does anyone have imx8mp fec and/or eqos network support working in
mainline Linux? I'm finding the device registers with the kernel and
link detect works but I can't get packets through.

I'm using an imx8mp-evk and linux master for testing. I find both
fec/eqos devices work fine in U-Boot but not Linux mainline. The NXP
downstream vendor kernel imx_5.4.70_2.3.0 branch works but I haven't
been able to pinpoint what is missing/different in mainline.

Best Regards,

Tim