Re: [PATCH v2 0/4] usb: dwc3: dual-role support
From: Roger Quadros
Date: Mon Mar 13 2017 - 04:34:43 EST
On 16/02/17 15:06, Roger Quadros wrote:
> We rely on the OTG controller block or Extcon to provide us with
> VBUS and ID line status via an interrupt.
> This is then used to switch the controller between host, peripheral
> and idle roles based on the following table.
> ID VBUS dual-role state
> -- ---- ---------------
> 0 x A_HOST - Host controller active
> 1 0 B_IDLE - Both Host and Gadget controllers inactive
> 1 1 B_PERIPHERAL - Gadget controller active
> Series depends on
>  dwc3 trivial fixes - https://lkml.org/lkml/2017/2/15/204
Would appreciate any feedback on this series. Thanks.
> - Use extcon device for VBUS/ID events if extcon phandle is present.
> - Fix bugs during system suspend/resume.
> Roger Quadros (4):
> usb: dwc3: core.h: add some register definitions
> usb: dwc3: omap: don't miss events during suspend/resume
> usb: dwc3: add dual-role support
> usb: dwc3: Workaround for super-speed host on dra7 in dual-role mode
> Documentation/devicetree/bindings/usb/dwc3.txt | 2 +
> drivers/usb/dwc3/core.c | 752 ++++++++++++++++++++++++-
> drivers/usb/dwc3/core.h | 131 ++++-
> drivers/usb/dwc3/dwc3-omap.c | 16 +
> drivers/usb/dwc3/gadget.c | 18 +-
> 5 files changed, 895 insertions(+), 24 deletions(-)