Ticket #2363 (new defect)

Opened 7 years ago

Last modified 7 years ago

sometimes pcf chanrges battery with 1000mA while connected to usb

Reported by: gena2x Owned by: openmoko-kernel
Priority: low Milestone:
Component: kernel Version:
Severity: normal Keywords:
Cc: Blocked By:
Blocking: Estimated Completion (week):
HasPatchForReview: no PatchReviewResult:
Reproducible: always

Description

For relatively short (tens of seconds or so) periods of time, kernel successfully draws 1000mA from usb bus. according to measurements with multimeter charge current is >500mA.

Sign of this event is
[ 6.500000] pcf50633 0-0073: usb curlim to 1000 mA
[ 47.680000] pcf50633 0-0073: usb curlim to 500 mA

Mean that while booting 1000mA drawn for 41 seconds.

Similar situation happens on suspend, but this were only visible while i added delay to printks for debugging.

Tested for om-gta02-34 kernel from git. I think similar thing happens with other kernels too.

Attachments

.config (58.7 KB) - added by gena2x 7 years ago.

Change History

comment:1 Changed 7 years ago by lindi

On andy-tracking a3587e4ed77974ad

1) reboot
2) dmesg|grep -i cur

prints
2)
[21474541.975000] pcf50633 0-0073: usb curlim to 100 mA
[21474557.790000] pcf50633 0-0073: usb curlim to 500 mA

so I guess the problem was introduced after that commit?

Changed 7 years ago by gena2x

comment:2 Changed 7 years ago by gena2x

Git is not linear system, so term 'after' may not be applied to different branched. Also, this problem may be triggered with different things, like kernel config.

I think i saw this also for andy-tracking optimized for speed.

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