Messages in this thread Patch in this message | | | Date | Tue, 4 Dec 2018 12:54:16 +0200 | From | Heikki Krogerus <> | Subject | Re: [PATCH v1 09/12] usb: dwc3: Registering a role switch in the DRD code. |
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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@kernel.org> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Signed-off-by: Yu Chen <chenyu56@huawei.com> > Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > > -- > 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. -- heikki
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