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 <[email protected]>
>> Cc: Greg Kroah-Hartman <[email protected]>
>> Signed-off-by: Yu Chen <[email protected]>
>> Signed-off-by: Heikki Krogerus <[email protected]>
>>
>> --
>> 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!
