[U-Boot] [PATCH v3 0/8] Improvements for the dwc3_generic driver

[Jean-Jacques Hiblot]

This series aims at bringing improvements to the dwc3_generic driver so
that it can be used by most of the platforms using the dwc3 controller.

I tested this on with DRA7 and AM57x platforms for both Peripheral and Host
operations. The code to enable DM USB host & dev support for those
platforms will be submitted in a separate series.

Michal Simek has tested this series:
" I have tested it on zcu100 with usb stick, usb to ethernet converter and
also dfu.
Tested-by: Michal Simek <michal.simek at xilinx.com>"

Enhancements:
- use separate Kconfig option for DM USB Periphal and DM USB Host. This
allow platforms to keep their non-DM USB peripheral code and use the DM
USB host.
- fixes the bind/probe confusion in dwc3_generic. The probe is done when
the USB device is first needed.
- handles PHYs when in the peripheral mode. The code to handle the PHYs is
shared with the host side
- handles clock and reset
- bind host controller to the more generic driver 'xhci-dwc3'


Changes in v3:
- fixes bug dwc3_setup_phy(): the phy arrays wasn't returned. This was
  visible only when the device is removed.
- Stub the DWC3 PHY operations if CONFIG_IS_ENABLED(PHY) is false.
  This fixes all build issues but one (evb-rk3328).
- Fix build issue with evb-rk3328 by enabling CONFIG_USB_DWC3. This has
  little impact on the footprint and should not break the runtime as the
  xhci-rockchip driver has its own probe function.
  Nevertheless this was !!! NOT TESTED !!! by lack of hw

Changes in v2:
- Updated commit log
- Fixed typo in thordown.c
- select DM_USB_DEV by default for zynqmp platforms

Jean-Jacques Hiblot (8):
  usb: gadget: Do not call board_usb_xxx() directly in USB gadget
    drivers
  usb: introduce a separate config option for DM USB device
  usb: udc: implement DM versions of
    usb_gadget_initialize()/_release()/_handle_interrupt()
  dwc3_generic: do not probe the USB device driver when it's bound
  dwc3: move phy operation to core.c
  configs: evb-rk3328: Enable CONFIG_USB_DWC3
  dwc3-generic: Handle the PHYs, the clocks and the reset lines
  dwc3-generic: Add select_dr_mode operation

 arch/arm/Kconfig                  |   2 +
 cmd/fastboot.c                    |   4 +-
 cmd/rockusb.c                     |   4 +-
 cmd/thordown.c                    |   4 +-
 cmd/usb_gadget_sdp.c              |   4 +-
 cmd/usb_mass_storage.c            |   4 +-
 common/dfu.c                      |   6 +-
 configs/evb-rk3328_defconfig      |   1 +
 drivers/usb/Kconfig               |   6 ++
 drivers/usb/dwc3/Kconfig          |   7 +-
 drivers/usb/dwc3/core.c           |  89 +++++++++++++++-
 drivers/usb/dwc3/dwc3-generic.c   | 207 +++++++++++++++++++++++++++++---------
 drivers/usb/dwc3/ep0.c            |   1 -
 drivers/usb/gadget/ether.c        |  38 +------
 drivers/usb/gadget/udc/udc-core.c |  44 +++++++-
 drivers/usb/host/xhci-dwc3.c      |  95 ++---------------
 include/dwc3-uboot.h              |  19 ++++
 include/linux/usb/gadget.h        |  18 ++++
 18 files changed, 367 insertions(+), 186 deletions(-)

-- 
2.7.4