[PATCH v3 0/5] Wire up USB controllers in i.MX6 emulations

[Guenter Roeck]

This patch series wires up the USB controllers on fsl-imx6 and fsl-imx6ul
emulations.

The first patch provides a basic implementation of the USB PHY controller
used in i.MX28 and later chips. Only reset bit handling in the control
register is actually implemented. Basic USB PHY support is needed to make
the USB ports operational in Linux.

The second patch fixes USB and USB PHY interrupt numbers for i.MX6UL.

The third patch instantiates unimplemented pwm and can devices. This patch
is necessary to avoid crashes in Linux when it tries to access those
devices. The crashes are observed when trying to boot Linux v4.21 or later.

The final two patches instantiate the USB controllers for i.mMX6 and
i.MX6UL.

v3:
- Minor cleanup in patch 1/5 (see details in patch)
- Added patch to fix USB and USB PHY interrupt numbers for fsl-imx6ul.
- Added patch to instantiate unimplemented pwm and CAN devices.
- Instantiate USB and USB PHY separately. They are logically different,
  and the number of instances is not always the same.

v2:
- Implement and instantiate basic USB PHY implementation
  instead of emulating a single USB PHY register

----------------------------------------------------------------
Guenter Roeck (5):
      hw/usb: Add basic i.MX USB Phy support
      hw/arm/fsl-imx6ul: Fix USB interrupt numbers
      hw/arm/fsl-imx6ul: Instantiate unimplemented pwm and can devices
      hw/arm/fsl-imx6ul: Wire up USB controllers
      hw/arm/fsl-imx6: Wire up USB controllers

 MAINTAINERS                  |   2 +
 hw/arm/Kconfig               |   1 +
 hw/arm/fsl-imx6.c            |  36 +++++++
 hw/arm/fsl-imx6ul.c          |  49 ++++++++++
 hw/usb/Kconfig               |   5 +
 hw/usb/Makefile.objs         |   2 +
 hw/usb/imx-usb-phy.c         | 225 +++++++++++++++++++++++++++++++++++++++++++
 include/hw/arm/fsl-imx6.h    |   6 ++
 include/hw/arm/fsl-imx6ul.h  |  16 ++-
 include/hw/usb/imx-usb-phy.h |  53 ++++++++++
 10 files changed, 392 insertions(+), 3 deletions(-)
 create mode 100644 hw/usb/imx-usb-phy.c
 create mode 100644 include/hw/usb/imx-usb-phy.h