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
