Hi NVidia Team
Is there a possibility to change a device-tree setting of a device with an overlay, depending on a cmdline argument added to /boot/extlinux/extlinux.conf? If yes, can you describe how we can achieve it?
The background is that on our board, we use as a PHY the chip KSZ9031. To make it work with the Jetson AGX Xavier Module, we had to add to the device tree the fixed-link node with a defined speed of 1000. Now it we use the device with an 100 Mbit Switch, it will not connect (ethtool reports onliy 1000Mbit supported). Therefore we would like to have the possibility to change the speed over a kernel argument.
If you even have a better solution, let us know.
Thank you for your help.