On Wed, 2016-06-22 at 14:44 +0300, Heikki Krogerus wrote: > If our port is DRD (which would be DRP in the port controller spec), > the supported_power_roles will list: > > device, host > > And the power role, if the port is Source only, the > supported_power_roles will list: > > source > > If the port is Sink only, the supported_power_roles will list: > > sink > > If our port is DRP, the supported_power_roles will list: > > source, sink > > What is there that is missing? We are able to express all the types of > "Roles Supported" that the DEVICE_CAPABILITIES define, no? No, because these are distinct in time. Some ports are DRP so they support device, host at the same time. Some ports can be switched between DFP and UFP they then either support host or device. But you lose the information that the ports can be switched. Regards Oliver -- 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
