Hi Rob, Em Fri, 3 Sep 2021 11:28:31 +0200 Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> escreveu: > 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. Gentile ping. Regards, Mauro > > - > > 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 > Thanks, Mauro
