Hi, On Tue, Jan 26, 2010 at 08:09:34PM +0100, Balbi Felipe (Nokia-D/Helsinki) wrote:
well, if you have access to twl5031 docs you'd understand what I'm talking about, the charger detection involves at least 3 blocks on twl5031 plus musb to enable/disable pullups. The sequence is pretty much as below:
there's more which I forgot:
1. vbus irq 2. usb_gadget_disconnect() 3. disable usb ldos
3.1 put transceiver in non-drivig mode
4. switch usb3v1 supply from vbat to vbus (to let charger detection work on low bat) 5. enable usb3v1 *only* 6. call the notifier chain 7. BCC module kicks charger detection 8. disable usb3v1 9. switch usb3v1 supply back to vbat
9.1 put transceiver back to normal mode
10. enable usb ldos 11. usb_gadget_connect() (necessary since we might be connected to charging port)
now it should be all fine. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
