I followed the instructions from Marek in 'M28 U-Boot Single-Wire Debug preview' to enable NetConsole: http://www.denx-cs.de/?q=blogm28singlewiredebug
I'm using mxsldr to flash the u-boot.sb image to RAM. This is the dmesg output from my host:
[31048.492181] usb 3-13: new high-speed USB device number 24 using xhci_hcd [31048.667617] cdc_ether 3-13:1.0 eth0: register 'cdc_ether' at usb-0000:00:14.0-13, CDC Ethernet Device, 00:19:b8:00:00:01 [31048.669101] cdc_ether 3-13:1.0 enp0s20u13: renamed from eth0 [31048.696758] cdc_ether 3-13:1.0 enp0s20u13: kevent 12 may have been dropped
I noticed the 'kevent 12 may have been dropped' message here.
Nevertheless, NetworkManager shows me a USB Ethernet connection and using './netconsole 10.0.0.2' I am able to communicate with the device, e.g. 'nand info' outputs correctly.
But if I use 'ping 10.0.0.1' or 'tftpboot u-boot.sb' the network connection drops. Both commands work fine if I switch back from netconsole to serial in-/output.
This is the output from dmesg: [31620.215354] usb 3-13: USB disconnect, device number 24 [31620.215422] cdc_ether 3-13:1.0 enp0s20u13: unregister 'cdc_ether' usb-0000:00:14.0-13, CDC Ethernet Device
Do I missed something?
Best regards Jörg Krause