Errata

byteDEVKIT < V1.2

STM32MP1 Ethernet

Due to a hardware issue at the ethernet PHY autonegotiation is disabled.

Using the ethernet setting from Device Tree of 1 GbE will not work on ethernet switches < 1 GbE.

As a workaround the ethtool could be used to set the speed manually.

Download it from here, copy it to the SD card and install it on the target with:

dpkg -i ethtool_5.4-r0_armhf.deb

Set the desired speed manually:

ethtool -s eth0 speed 100 duplex full
# or even
ethtool -s eth0 speed 10 duplex half