Messages in this thread | | | From | Felipe Balbi <> | Subject | Re: [PATCH v2 4/4] usb: dwc3: Workaround for super-speed host on dra7 in dual-role mode | Date | Tue, 28 Mar 2017 14:10:48 +0300 |
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Hi,
Roger Quadros <rogerq@ti.com> writes: > dra7 OTG core limits the host controller to USB2.0 (high-speed) mode > when we're operating in dual-role.
yeah, that's not a quirk. DRA7 supports OTGv2, not OTGv3. There was no USB3 when OTGv2 was written.
DRA7 just shouldn't use OTG core altogether. In fact, this is the very thing I've been saying for a long time. Make the simplest implementation possible. The dead simple, does-one-thing-only sort of implementation.
All we need for Dual-Role (without OTG extras) is some input for ID and VBUS, then we add/remove HCD/UDC conditionally and set PRTCAPDIR.
-- balbi [unhandled content-type:application/pgp-signature]
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