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| author |   Yu Chen <chenyu56@huawei.com> | 2020-09-10 08:00:12 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-10 18:56:38 +0200 |
| commit | 7a6ff4c4cbc3570a1ae483a833b3fb12b1a56a9d (patch) | |
| tree | f7d6e3bd385d4239704230d7893ff2f62a39b302 /drivers/misc/Kconfig | |
| parent | selftests/lkdtm: Use "comm" instead of "diff" for dmesg (diff) | |
| download | linux-dev-7a6ff4c4cbc3570a1ae483a833b3fb12b1a56a9d.tar.xz linux-dev-7a6ff4c4cbc3570a1ae483a833b3fb12b1a56a9d.zip | |
misc: hisi_hikey_usb: Driver to support onboard USB gpio hub on Hikey960
The HiKey960 has a fairly complex USB configuration due to it
needing to support a USB-C port for host/device mode and multiple
USB-A ports in host mode, all using a single USB controller.
See schematics here:
https://github.com/96boards/documentation/raw/master/consumer/hikey/hikey960/hardware-docs/HiKey960_Schematics.pdf
This driver acts as a usb-role-switch intermediary, intercepting
the role switch notifications from the tcpm code, and passing
them on to the dwc3 core.
In doing so, it also controls the onboard hub and power gpios in
order to properly route the data lines between the USB-C port
and the onboard hub to the USB-A ports.
Signed-off-by: Yu Chen <chenyu56@huawei.com>
[jstultz: Major rework to make the driver a usb-role-switch
intermediary]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c263f72e1d803c18c45a69ce2c333e79a7ed89ff.1599717402.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/Kconfig')
| -rw-r--r-- | drivers/misc/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index ce136d685d14..cb5944a5fce5 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -456,6 +456,15 @@ config PVPANIC a paravirtualized device provided by QEMU; it lets a virtual machine (guest) communicate panic events to the host. +config HISI_HIKEY_USB + tristate "USB GPIO Hub on HiSilicon Hikey960 Platform" + depends on (OF && GPIOLIB) || COMPILE_TEST + help + If you say yes here this adds support for the on-board USB GPIO hub + found on the HiKey960, which is necessary to support switching + between the dual-role USB-C port and the USB-A host ports using only + one USB controller. + source "drivers/misc/c2port/Kconfig" source "drivers/misc/eeprom/Kconfig" source "drivers/misc/cb710/Kconfig" |