Referring to this URL I think I have similar problem:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2011-October/093359.html
Ethernet works ok in UBoot (as FM1@DTSEC4) on my device but not in Linux (using SDK 1.4). My device tree is based on the one from p2041rdb.dts (everything relating to Ethernet is copied).
What magic numbers do I need from UBoot into my device tree so that it will work in Linux also?
I have the following issues:
- ping does not work normally
- if I press Enter on serial port then ping to device works for a second
- after a while, maybe a minute or so, the serial port gets locked up
Don't know if this helps:
cat /proc/interrupts
CPU0
16: 0 OpenPIC Edge mpic-error-int
24: 0 OpenPIC Level pamu
25: 0 OpenPIC Level fsl-lbc
28: 0 OpenPIC Level fsldma-chan
29: 0 OpenPIC Level fsldma-chan
30: 0 OpenPIC Level fsldma-chan
31: 0 OpenPIC Level fsldma-chan
32: 0 OpenPIC Level fsldma-chan
33: 0 OpenPIC Level fsldma-chan
34: 0 OpenPIC Level fsldma-chan
35: 0 OpenPIC Level fsldma-chan
36: 234 OpenPIC Level serial
38: 0 OpenPIC Level i2c-mpc, i2c-mpc
39: 0 OpenPIC Level i2c-mpc, i2c-mpc
53: 0 OpenPIC Level fsl_espi
88: 2 OpenPIC Level caam-jobr
89: 0 OpenPIC Level caam-jobr
90: 0 OpenPIC Level caam-jobr
91: 0 OpenPIC Level caam-jobr
96: 0 OpenPIC Level fman
122: 0 OpenPIC Level QMan portal 0
123: 0 OpenPIC Level BMan portal 0
468: 0 OpenPIC Edge fman-err
469: 0 OpenPIC Edge bman-err
470: 0 OpenPIC Edge qman-err
LOC: 47135 Local timer interrupts
SPU: 0 Spurious interrupts
CNT: 0 Performance monitoring interrupts
MCE: 0 Machine check exceptions
After bring up the device and try ping the QMan portal 0 jumps very high!
ifconfig eth2 10.3.10.231 netmask 255.255.0.0
// try ping device here
122: 105497 OpenPIC Level QMan portal 0
