[0/3] usb: dwc2: fill in gadget caps, configure it for stm32mp15

Message

Fabrice Gasnier Sept. 15, 2021, 7:54 a.m. UTC

This patchset fills in 'otg_caps' of the usb_gadget structure, and configures it
on stm32mp15.

When dwc2 is configured as dual role (OTG), the USB gadget descriptors (device mode)
are configured via configfs. This lead in calling usb_otg_descriptor_init().
In usb_otg_descriptor_init() (drivers/usb/gadget/config.c):
- If otg caps structure is provided -> use it
- If otg caps structure isn't provided -> HNP and SRP are enabled by default

This could lead to a configuration mismatch beetween:
- OTG controller: HNP and SRP aren't enabled
- gadget descriptors: HNP and SRP are advertised

Fabrice Gasnier (3):
  usb: dwc2: add otg_rev and otg_caps information for gadget driver
  usb: dwc2: stm32mp15: set otg_rev
  ARM: dts: stm32: set otg-rev on stm32mp151

 arch/arm/boot/dts/stm32mp151.dtsi |  1 +
 drivers/usb/dwc2/core.h           |  7 +++++++
 drivers/usb/dwc2/gadget.c         |  1 +
 drivers/usb/dwc2/params.c         | 16 ++++++++++++++++
 4 files changed, 25 insertions(+)