How to switch usb mode to 500mA (enable USB charging with car charger) ?

Marcus Bauer marcus.bauer at
Fri Jul 11 10:14:37 CEST 2008

On Fri, 2008-07-11 at 08:56 +0100, Harald Koenig wrote:
> Hi,
> I'd like to use a 12V USB car charger from my Wintec WBT201 for powering and charging the GTA02.
> the car device claims to be "500mA" but I only get
> 	root at om-gta02:~# cat /sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/charger_type
> 	host/500mA usb mode 100mA
> is it possible to force charging and/or switch mode to 500mA by software (not soldering
> resistors to the cable etc) ?   I found some rumors on the list that this might be possible
> but can't find any details...

echo -n "fast_cccv" > /sys/devices/platform/s3c2410-i2c/i2c-adapter/i2c-0/0-0008/chgmode

There is a wiki page and a watchdog but with a quick google I found


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