Messages in this thread | | | Subject | Re: [PATCH] usb: typec: Defer checking of valid power role swap to low level drivers | From | Oliver Neukum <> | Date | Wed, 17 May 2017 09:34:32 +0200 |
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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
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