Re: [PATCH] usb: typec: Defer checking of valid power role swap to low level drivers

[Oliver Neukum]

Am Mittwoch, den 17.05.2017, 00:32 -0700 schrieb Badhri Jagan
Sridharan:

Hi,

> "Two independent set of mechanisms are defined to allow a USB Type-C
> DRP to functionally swap power and data roles. When USB PD is
> supported, power and data role swapping is performed as a subsequent
> step following the initial connection process. For non-PD implementations,
> power/data role swapping can optionally be dealt with as part of the initial
> connection process."

Well, as I read it, without PD once a connection is established, you
are stuck with your role. So it seems to me that blocking a later
attempt to change it makes sense.

	Regards
		Oliver