Re: Nokia N900: musb is in wrong state after boot
From: Tony Lindgren
Date: Thu Jan 21 2016 - 15:30:22 EST
* joerg Reisenweber <joerg@xxxxxxxxxxxx> [160121 11:35]:
> On Thu 21 January 2016 11:21:13 Tony Lindgren wrote:
> > Do you have some pointer
> > to the "certain resistor value on ID to GND" spec? Is it maybe part of
> > the carkit related parts of the USB spec?
> ""Three additional ID pin states are defined at the nominal resistance
> values of 124 kÎ, 68 kÎ, and 36.5 kÎ, with respect to the ground pin. These
> permit the device to work with USB Accessory Charger Adapters that allows the
> OTG device to be attached to both a charger and another device simultaneously.
OK thanks. So it's the "accessory charger" part of the
battery charging specification 1.1.