[PATCH 0/3] Add USB role switch support to DWC2
Minas.Harutyunyan at synopsys.com
Thu Jun 25 07:34:44 EDT 2020
On 6/16/2020 6:07 PM, Amelie Delaunay wrote:
> When using usb-c connector (but it can also be the case with a micro-b
> connector), iddig, avalid, bvalid, vbusvalid input signals may not be
> connected to the DWC2 OTG controller.
> DWC2 OTG controller features an overriding control of the PHY voltage valid
> and ID input signals.
> So, missing signals can be forced using usb role from usb role switch and
> this override feature.
> This series adds support for usb role switch to dwc2, by using overriding
> control of the PHY voltage valid and ID input signals.
> It has been tested on stm32mp157c-dk2 , which has a Type-C connector
> managed by a Type-C port controller, and connected to USB OTG controller.
>  https://urldefense.com/v3/__https://www.st.com/en/evaluation-tools/stm32mp157c-dk2.html__;!!A4F2R9G_pg!KPU6pLcAMaVrFxzSp3peLkjZzWJzjsc__Kl878UYSLY2Cnv5NMmwACsY4kTCow0$
> Amelie Delaunay (3):
> usb: dwc2: override PHY input signals with usb role switch support
> usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15
> ARM: dts: stm32: enable usb-role-switch on USB OTG on stm32mp15xx-dkx
> arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 2 +-
> drivers/usb/dwc2/Kconfig | 1 +
> drivers/usb/dwc2/Makefile | 2 +-
> drivers/usb/dwc2/core.h | 8 ++
> drivers/usb/dwc2/drd.c | 190 +++++++++++++++++++++++++
> drivers/usb/dwc2/gadget.c | 2 +-
> drivers/usb/dwc2/params.c | 4 +-
> drivers/usb/dwc2/platform.c | 13 ++
> 8 files changed, 218 insertions(+), 4 deletions(-)
> create mode 100644 drivers/usb/dwc2/drd.c
Acked-by Minas Harutyunyan <hminas at synopsys.com>
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