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| author | mark-yw.chen <[email protected]> | 2021-08-04 17:06:47 +0800 |
|---|---|---|
| committer | Marcel Holtmann <[email protected]> | 2021-08-04 16:48:08 +0200 |
| commit | e947802657cb6f540ba04f498dfd4938ed6c569e (patch) | |
| tree | 0bfe95080810a8a98f683af9899d1897ec634cb0 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 0b10c8c84c0c78ba4456bdbeb8a5b6ee58f47e39 (diff) | |
Bluetooth: btusb: Support Bluetooth Reset for Mediatek Chip(MT7921)
When the firmware hang or command no response, driver can reset the
bluetooth mcu via USB to recovery it. The reset steps as follows.
1. Cancel USB transfer requests before reset.
2. It use speicific USB HW Register to reset Bluetooth MCU, at the
same time, the USB Endpoint0 still keep alive.
3. Poll the USB HW register until reset is completed by Endpoint0.
4. To recovery unexpected USB state and behavior during resetting the
Bluetooth MCU, the driver need to reset the USB device for MT7921.
5. After the reset is completed, the Bluetooth MCU need to re-setup,
such as download patch, power-on sequence and etc.
Signed-off-by: mark-yw.chen <[email protected]>
Reviewed-by: Michael Sun <[email protected]>
Reviewed-by: Archie Pusaka <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions