Am Freitag, den 04.05.2018, 08:59 +0000 schrieb Jun Li: > > > > > Can one implement a device that can operate as either DFP or UFP, > > > > but not implements the dynamic role switch that a DRP must support? > > > > > > You mean a port with DRD on data but not DRP on power? > > > > > > The data-role is newly added as the data role is not coupled with > > > power > > > > No, I meant data role. As far as I can tell for a DRP you need to implement the > > detection logic described in chapter 4 of the spec. > > Could you please point me the "detection logic" of typec spec chapter 4 > you are referring to? Chapter 4.5.2.2, especially state diagramms 4.15 and 4.16 It just seems to me that a DRP and a physical port that can be switched between UFP and DFP are not the same thing, but can be implemented. 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
