Something seems wrong here. The OP says connected to a PC and to the
provided charger, respectively, he gets the following reports:
>>>>>>>
Connected to PC:
chgmode: fast
charger_type: charger 1A mode 500mA
Connected to included wall charger:
chgmode: fast
charger_type: charger 1A mode 1A
<<<<<<<<
I would have expected chgmode to change, as well as charger type, no?
What are the different values for chgmode and charger_type? In
particular, they should be propery documented here:
http://wiki.openmoko.org/wiki/GTA02_sysfs#.2Fsys.2Fdevices.2Fplatform.2Fs3c2440-i2c.2Fi2c-adapter.2Fi2c-0.2F0-0073.2Fchgmode
http://wiki.openmoko.org/wiki/GTA02_sysfs#.2Fsys.2Fdevices.2Fplatform.2Fs3c2440-i2c.2Fi2c-adapter.2Fi2c-0.2F0-0073.2Fcharger_type
Michael
-------- Original Message --------
Subject: Re: car charger
Date: Sat, 11 Oct 2008 21:50:29 -0400
From: Joel Newkirk <[EMAIL PROTECTED]>
Reply-To: List for Openmoko community discussion
<[EMAIL PROTECTED]>
To: List for Openmoko community discussion <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
On Sat, 11 Oct 2008 16:38:20 -0700, Michael Shiloh <[EMAIL PROTECTED]>
wrote:
Joel Newkirk wrote:
On Fri, 10 Oct 2008 09:05:09 -0700, Michael Shiloh
<[EMAIL PROTECTED]>
wrote:
David Garabana Barro wrote:
On Friday 10 October 2008 12:50:57 Cédric Berger wrote:
Ok, thanks...
Would be interesting if by chance you could check between the ID pin
and ground if you have a resistance close to 4.7Kohm ...?
I will look at it, and post the results.
Anxiously awaiting your measurements.
If there is no 4.7K resistor, I'd move this discussion to the kernel
list. We should not be charging at 1A if we do not see this resistor.
The cig lighter adapter I got is just a USB port, (the ID pin doesn't
exist
there) just jack in the USB<->MiniUSB cable. I get the same readings
below
on AC, on PC, and on DC. If I force charging to 500mA or 100mA then
they
reflect that.
[EMAIL PROTECTED]:~# cat
/sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/chgmode
fast
[EMAIL PROTECTED]:~# cat
/sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/charger_type
charger 1A mode 1A
If I understand you correctly, this sounds like a bug.
Let me confirm:
1. Disconnect your FreeRunner from any power source.
2. Power cycle (to clear any previous state).
3. Connect the FreeRunner to a PC USB port. We know these source at most
500mA.
4. Display (and report) chgmode.
Thanks,
Michael
OK, here's the final results. I've flashed the kernel since my previous
post in this thread, currently uname -a shows "Linux iota.newkirk.us 2.6.24
#1 PREEMPT Fri Sep 26 14:13:25 EST 2008 armv4tl unknown". After shutting
down and restarting:
with nothing connected, I get:
chgmode: play-only
charger_type: charger 1A mode 1A
Connected to PC:
chgmode: fast
charger_type: charger 1A mode 500mA
Connected to included wall charger:
chgmode: fast
charger_type: charger 1A mode 1A
Connected to cheapo car lighter-to-USB adapter:
chgmode: fast
charger_type: charger 1A mode 1A
(of course since the car charger provides 1000mA this is what I want it to
do, but I realize it shouldn't be doing it without intervention)
j
_______________________________________________
Openmoko community mailing list
[EMAIL PROTECTED]
http://lists.openmoko.org/mailman/listinfo/community
