On 2018/12/4 18:54, Heikki Krogerus wrote: > On Mon, Dec 03, 2018 at 11:45:12AM +0800, Yu Chen wrote: >> The Type-C drivers use USB role switch API to inform the >> system about the negotiated data role, so registering a role >> switch in the DRD code in order to support platforms with >> USB Type-C connectors. >> >> Cc: Felipe Balbi <balbi@xxxxxxxxxx> >> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> >> Signed-off-by: Yu Chen <chenyu56@xxxxxxxxxx> >> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> >> >> -- >> v0: >> The patch is provided by Heikki Krogerus. I modified and test it >> on Hikey960 platform. >> -- >> --- >> drivers/usb/dwc3/core.h | 2 ++ >> drivers/usb/dwc3/drd.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 51 insertions(+) > > You need to select USB_ROLE_SWITCH in Kconfig: > > diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig > index 1a0404fda596..3a0cb9f1f38a 100644 > --- a/drivers/usb/dwc3/Kconfig > +++ b/drivers/usb/dwc3/Kconfig > @@ -42,6 +42,7 @@ config USB_DWC3_DUAL_ROLE > bool "Dual Role mode" > depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3)) > depends on (EXTCON=y || EXTCON=USB_DWC3) > + select USB_ROLE_SWITCH > help > This is the default mode of working of DWC3 controller where > both host and gadget features are enabled. > OK. Thanks!
