Hi, On 06/07/2016 02:34 PM, Jun Li wrote: >> > On 06/07/2016 11:03 AM, Jun Li wrote: >>> > > Hi Roger >>> > > >>>> > >> >>>> > >> For Mux devices implementing dual-role, the mux device driver _must_ >>>> > >> use OTG/dual-role core API so that a common ABI is presented to user >>>> > >> space for OTG/dual-role. >>> > > That's the only point we have concern, do dual role switch through >>> > > OTG/dual-role core, not do it by itself. >> > >> > That really depends on how do you define "dual role". Can you please >> > provide an unambiguous definition of "dual role" used in OTG/dual-role >> > framework? > Host and peripheral. > This is definitely ambiguous. By reading OTG/dual-role code, my understanding is that "dual-role" is a "reduced OTG" which is for DRD devices lacking of some OTG negotiation protocols. We really can't say "it's the scope of OTG/dual-role" whenever it comes to "host and peripheral". Best regards, Lu Baolu -- 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
