On Wed, Feb 17, 2016 at 04:28:16PM +0200, Heikki Krogerus wrote: > On Wed, Feb 17, 2016 at 03:36:46PM +0200, Felipe Balbi wrote: > > > > Hi, > > > > > IIRC mode and role negotiation goes via CC pins using the power delivery > > protocol. If I misunderstand anything, let me know. > > The data role swap with USB Type-C connectors is in no way tied to USB > Power Delivery. The USB Type-C spec defines that when USB PD is > available, DR_Swap USB PD function is used to swap the role, otherwise > emulated disconnect will do the trick. >
I am interested in how you design role swap on the fly without USB PD. Do you follow the spec like USB OTG 3.0 RSP (Role Swap Protocol) or just echo the /sys to give up current role, and swap to another? -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
