On Wed, Mar 28, 2018 at 11:52:13PM +0200, Paul Kocialkowski wrote: > This allows dual-role ports to be reported as having gadget mode by the > musb_has_gadget helper. This is required to enable MUSB at all with MUSB > glue layers that set the port mode to MUSB_PORT_MODE_DUAL_ROLE at init. > > Most notably, this allows calling musb_start when needed in the virtual > MUSB root HUB, regardless of whether the current mode should be gadget > or host. > > This fixes USB OTG on Allwinner devices that I could test it with, > mainly A20 devices. > > Signed-off-by: Paul Kocialkowski <contact@xxxxxxxx> Surely there's more to it than that. The gadget mode of A20 boards have been working in the past, including when compiling with mUSB setup as dual role. Is this a regression since a particular commit? Or is there another, deeper issue overlooked in the commit log? Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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