if I run the i.mx28evk(L2.6.35) with power from the 5V jack all things work fine. I use udhcpc to get an IP.
But if i power it from the USB port J82 (with S3:ON and S16:USB 5V) the Ethernet won't work.
I don't get dhcp responses with power from USB.
$ ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:01:9F:02:4D:72
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
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
udhcpc (v1.15.0) started
eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=0:00, irq=-1)
I think it's the same problem like in this thread eth0 problem in imx28 evk but I'm not sure. Are there any solutions for this?