XavierNX EQOS LAN port sometimes doesn't link up

[shinichiro.adachi]

After a bit of digging, I found the following POST.

Networking performance issue

We encouter issues with Ethernet performance especially since last update of our TX2 to jetpack 4.4.1. Our network is composed by a fleet of tx2 boards. In order to find error, we have made a test with the TX2 on its evaluation board and a USB to Gigabit Ethernet adapter plugged on a laptop (to connect it to the TX2). We’ve seen strange behavior on our network. so we began to investigate. To emphase the issue, we are using iperf tool. To validate our tests we’ve made tests with many TX2. F…

I set “CONFIG_EQOS_DISABLE_EEE=y” and and evaluated it in the above ifconfig continuous down/up environment.

I repeated down/up 15128 times for 3days, PHY_AN was constantly occurring.

After that, I disabled “CONFIG_EQOS_DISABLE_EEE” again and repated down/up 2700 times for 12 hours, PHY_AN was not raised once.

Are there any issues with the EEE feature in EQOS in the XavierNX environment?