i.MX508 EVK Linux not loading USB drivers? How do I connect via SSH over USB? Where is device usb0?

[stephenluebkert]

Thanks in advance for any help. Boards are MCIMX50EVK and IMXEBOOKDC2. Booted via SD card.

Some hopefully useful command line info:

root@freescale ~$ uname -r

2.6.35.3-1129-g691c08a-gd988edf-dirty

root@freescale ~$ lsmod
Module                  Size  Used by
mxc_epdc_fb            31621  0
mxc_epdc_eink           9124  1 mxc_epdc_fb
root@freescale ~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:04:9F:01:8D:8D
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          LOOPBACK  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

root@freescale ~$ lspci
lspci: /sys/bus/pci/devices: No such file or directory
root@freescale ~$ lsusb
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0002

root@freescale ~$ ifconfig usb0 10.0.0.2 up; route add default gw 10.0.0.1

ifconfig: SIOCSIFADDR: No such device

route: SIOCADDRT: Network is unreachable

root@freescale ~$ dmesg|grep usb

IMX usb wakeup probe

IMX usb wakeup probe

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

usbcore: registered new interface driver cdc_acm

usbcore: registered new interface driver usb-storage

usbcore: registered new interface driver uvcvideo

usbcore: registered new interface driver btusb

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

fsl-usb2-udc: bind to driver g_file_storage

root@freescale ~$ ll /dev/usb*
crw-rw----    1 root     root      189,   0 Aug 13 09:39 /dev/usbdev1.1
crw-rw----    1 root     root      189, 128 Aug 13 09:39 /dev/usbdev2.1
root@freescale ~$ ll /sys/devices/platform/usb*
/sys/devices/platform/usb_wakeup.0:
lrwxrwxrwx    1 root     root             0 Aug 13 10:13 driver -> ../../../bus/platform/drivers/usb_wakeup
-r--r--r--    1 root     root          4096 Aug 13 10:13 modalias
drwxr-xr-x    2 root     root             0 Aug 13 10:13 power
lrwxrwxrwx    1 root     root             0 Aug 13 10:13 subsystem -> ../../../bus/platform
-rw-r--r--    1 root     root          4096 Aug 13 09:39 uevent

/sys/devices/platform/usb_wakeup.1:
lrwxrwxrwx    1 root     root             0 Aug 13 10:13 driver -> ../../../bus/platform/drivers/usb_wakeup
-r--r--r--    1 root     root          4096 Aug 13 10:13 modalias
drwxr-xr-x    2 root     root             0 Aug 13 10:13 power
lrwxrwxrwx    1 root     root             0 Aug 13 10:13 subsystem -> ../../../bus/platform
-rw-r--r--    1 root     root          4096 Aug 13 09:39 uevent

[jamesbone]

In order to use the Ethernet USB Profile you need to add the USB Gadget feature into your Kernel, which it is not enable by default so you need to enter in LTIB using  the ltib -c command and  select modify drivers. Once there you can select USB Gadget feature. For more details refer to the MX50 EVK Linux Reference Manual Chapter 30.