SNOWBALL: ECM needs to be brought up for ethernet to work

[Mathieu Poirier]

Ethernet should come up automatically via dhcp but doesn't. The work around is to bringup and close the ECM.

This most likely caused by the fact that the kernel cmd line includes 'ip=dhcp', which retards the boot process just enough to get the mmc in working order.

[Mathieu Poirier (mathieu.poirier-deactivatedaccount)]

I can confirm that the presence of the "ip=dhcp" on the kernel cmd line is causing this problem. At this time we cannot remove this option because of bug 823313. Getting a dhcp address in the kernel retards the passage to userspace just long enough to get the mmc in working order (sometimes).

Despite bug 823313, the ECM should be enhanced to deal with an already configured interface.

[Abhishek Paliwal (abhishek-paliwal)]

On SNowball Hardware using build:
https://android-build.linaro.org/builds/~linaro-android/staging-snowball-11.10-release/

Need to bring up eth0 interface after bootup, by default its shown as DOWN.
i.e:
#netcfg
eth0 DOWN 0.0.0.0 0.0.0.0 0x00001002

#ifconfig eth0 up 192.168.0.104
#netcfg
eth0 UP 192.168.0.104 255.255.255.0 0x00001043

[Mathieu Poirier (mathieu.poirier-deactivatedaccount)]

The solution is to reset the interface and start a dhcp request in Android, hence following the standard connection process.