[U-Boot] [PATCH v3 0/4] USB: Add cadence USB3 gadget/host/phy driver

[Sherry Sun]

These patches introduce new Cadence driver to U-Boot.
The first patch is to add the Cadence USB3 IP(CDNS3) core and driver for 
the usb gadget.
The second patch introduce the xhci-imx8 usb host driver separately.
The third patch introduce the cdns3 phy driver which can be used for both 
cdns3 host driver and gadget driver.
The cdns3 usb gadget/host/phy driver are all used DM mode.

The current driver has been validated on i.MX8 platform.
If someone want to test it, please note that the additional dts nodes/
config macros/clock driver are also essential. You can also get
my test patches at https://github.com/sherrysun1/u-boot-imx.git to 
start your test quickly.

Changes in v3:
 - Changed all compatible from "Cadence,usb3" to "cdns,usb3".
 - Use wait_for_bit_le32() and clrsetbits_le32() globally. 
 - Use u32 instead of unint_32 globally. 
 - Split cdns3_set_role() into two functions: 
   cdns3_host_role_set() and cdns3_gadget_role_set().

Sherry Sun (4):
  USB: gadget: Add the cadence USB3 gadget driver
  USB: host: Add the USB3 host driver
  phy: Add USB PHY driver for the cadence USB3
  USB: gadget: core: introduce ->udc_set_speed() method

 Makefile                                   |    1 +
 doc/device-tree-bindings/usb/cdns-usb3.txt |   39 +
 drivers/phy/Kconfig                        |    8 +
 drivers/phy/Makefile                       |    1 +
 drivers/phy/cdns3-usb-phy.c                |  243 +++
 drivers/usb/Kconfig                        |    2 +
 drivers/usb/cdns3/Kconfig                  |   20 +
 drivers/usb/cdns3/Makefile                 |    5 +
 drivers/usb/cdns3/cdns3-generic.c          |  115 +
 drivers/usb/cdns3/cdns3-nxp-reg-def.h      |   89 +
 drivers/usb/cdns3/core.c                   |  194 ++
 drivers/usb/cdns3/core.h                   |  118 ++
 drivers/usb/cdns3/dev-regs-macro.h         |  116 +
 drivers/usb/cdns3/dev-regs-map.h           |  117 ++
 drivers/usb/cdns3/gadget-export.h          |   26 +
 drivers/usb/cdns3/gadget.c                 | 2218 ++++++++++++++++++++
 drivers/usb/cdns3/gadget.h                 |  225 ++
 drivers/usb/cdns3/io.h                     |   30 +
 drivers/usb/gadget/epautoconf.c            |    4 +
 drivers/usb/gadget/gadget_chips.h          |    7 +
 drivers/usb/gadget/udc/Makefile            |    1 +
 drivers/usb/gadget/udc/udc-core.c          |   23 +
 drivers/usb/host/Kconfig                   |    9 +
 drivers/usb/host/Makefile                  |    1 +
 drivers/usb/host/xhci-imx8.c               |  189 ++
 include/linux/usb/gadget.h                 |    5 +
 scripts/Makefile.spl                       |    1 +
 27 files changed, 3807 insertions(+)
 create mode 100644 doc/device-tree-bindings/usb/cdns-usb3.txt
 create mode 100644 drivers/phy/cdns3-usb-phy.c
 create mode 100644 drivers/usb/cdns3/Kconfig
 create mode 100644 drivers/usb/cdns3/Makefile
 create mode 100644 drivers/usb/cdns3/cdns3-generic.c
 create mode 100644 drivers/usb/cdns3/cdns3-nxp-reg-def.h
 create mode 100644 drivers/usb/cdns3/core.c
 create mode 100644 drivers/usb/cdns3/core.h
 create mode 100644 drivers/usb/cdns3/dev-regs-macro.h
 create mode 100644 drivers/usb/cdns3/dev-regs-map.h
 create mode 100644 drivers/usb/cdns3/gadget-export.h
 create mode 100644 drivers/usb/cdns3/gadget.c
 create mode 100644 drivers/usb/cdns3/gadget.h
 create mode 100644 drivers/usb/cdns3/io.h
 create mode 100644 drivers/usb/host/xhci-imx8.c

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2.17.1