[PATCH v4 0/4] Make USB ports to work on HiKey960/970

[Mauro Carvalho Chehab <mchehab+huawei@kernel.org>]

Hi Rob,

It follows the patchset adding a DT schema needed to power on and to
use the integrated USB hub found on HiKey 960 and Hikey 970 boards.

Besides each board use a different chip for the hub,  on both they're
controlled the same way. Such boards come with an integrated 4-port
USB hub on it, set on what it seems to be a non-standard way: on both 
implementations, the USB type-C port is used to detect the USB role.

When in host mode, the 3.3V power supply (VDD33 pins) for the hub
are disabled. That disables the USB I/O on type-A ports.

When USB type-C is on device mode, the OTG is switched via a GPIO pin
to device mode, and the hub is powered on.

A Type-C power supply line is also controlled depending on the role.

-

The entire series  which contains the remaining patches to support
PCI and USB on HiKey970, and USB on HiKey960 is at:

    https://github.com/mchehab/linux/commits/linux-master

The patches needed by the USB on HiKey970 were already merged
upstream. So, the above branch applies on the top of Linux master
branch.

Tested on HiKey 960:

	$ lsusb
	Bus 002 Device 002: ID 0424:5734 Standard Microsystems Corp. 
	Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
	Bus 001 Device 004: ID 0424:2740 Standard Microsystems Corp. 
	Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
	Bus 001 Device 002: ID 0424:2734 Standard Microsystems Corp. 
	Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Tested on HiKey 970:
	
	$ lsusb
	Bus 002 Device 002: ID 0451:8140 Texas Instruments, Inc. TUSB8041 4-Port Hub
	Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
	Bus 001 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
	Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
	Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

v4:
  - Improved description at the DT schema;
  - Use just one compatible, as there's no difference between
    HiKey 960 and 970 with regards to how the hub should be
    controlled;
  - parse usb-role-switch property at the driver;
  - make the properties that depends on usb-role-switch optional.

v3:
  - The examples at the dt-bindings were updated to reflect
    the actual DTS content and won't produce any warnings;
  - Added John Stultz SoB to Hikey960 DTS patch;
  - Added a patch for the mux hub driver for it to work with
    the newer schema;

John Stultz (1):
  arm64: dts: hisilicon: Add usb mux hub for hikey960

Mauro Carvalho Chehab (2):
  misc: hisi_hikey_usb: change the DT schema
  arm64: dts: hisilicon: Add usb mux hub for hikey970

Yu Chen (1):
  dt-bindings: misc: add schema for USB hub on Kirin devices

 .../bindings/misc/hisilicon,hikey-usb.yaml    |  87 +++++++++++++
 .../boot/dts/hisilicon/hi3660-hikey960.dts    |  35 +++++-
 .../boot/dts/hisilicon/hi3670-hikey970.dts    |  23 ++++
 drivers/misc/hisi_hikey_usb.c                 | 119 +++++++++---------
 4 files changed, 206 insertions(+), 58 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml

-- 
2.31.1