On 07/23/2013 07:28 PM, Bin Liu wrote: > Hi, Hi, > > On Mon, Jul 22, 2013 at 1:10 PM, Sebastian Andrzej Siewior > <bigeasy@xxxxxxxxxxxxx <mailto:bigeasy@xxxxxxxxxxxxx>> wrote: > > This patch adds the MUSB_DEVCTL_SESSION back after it has been removed. > If it is missing then the host session is not recognized. This bit is > added initially added in musb_start() and removed after the first device > disconnect. > > AFAIK, after the device is disconnected, the OTG state machine will go > back to B_IDLE/A_IDLE state. SESSION is not needed in this case. Okay. > In OTG mode, when no device is plugged, the ID pin is floating, you can > never hold the host session in this case, even set the SESSION bit. The > SESSION bit will be cleared by the controller after 100ms. In my testing the bit remains set. How is the bit supposed to come back after I connect a host device? > Regards, > -Bin. > Sebastian -- 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
