[Bug 1252] New: usb0 no longer comes up if booting with usb plugged in
Werner Almesberger
werner at openmoko.org
Sat Mar 29 00:04:35 CET 2008
I wrote:
> I set up an automated test for this with and without DFU:
> svn.openmoko.org/developers/werner/bug1252/
After applying Andy's Glamo band-aid, things are much better. I still
get the occastional boot failure, though. (About 3%, down from 10%.)
Now, the pattern is that the device is either powered down, or is at
least completely unresponsive (including not answering JTAG). Still,
no isolated EoUSB failure. (In about 130 reset-DFU-boot cycles.)
I suspect that something bad is happening during PMU initialization.
Each hang is preceded by MMC messages, but I think that might just
be coincidence.
Typical sequence:
pcf50633_work: PMU Coldplug init
pcf50633: dev (254:0)
pcf50633 0-0073: rtc core: registered pcf50633 as rtc0
mmc0: req failed (CMD5): -110, retrying...
glamo-mci glamo-mci.0: Error after cmd: 0x8120
mmc0: req failed (CMD5): -110, retrying...
glamo-mci glamo-mci.0: Error after cmd: 0x120
mmc0: req done (CMD5): -110: 00000000 00000000 00000000 00000000
mmc0: starting CMD55 arg 00000000 flags 000000f5
(system hangs)
Anyway, unless there's more information on bug 1252, I'd consider it
as not reproducible.
The boot failures want looking into, though. I knew that we got
stuck every once in a while when booting, but didn't quite realize
that this was so easy to reproduce. So this is actually a good
result :-)
- Werner
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