mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 11:13:58 +08:00
213e19d659
The I2C-bus to the XPower AXP288 is shared between the Linux kernel and the SoCs P-Unit. The P-Unit has a semaphore which the kernel must "lock" before it may use the bus. If not explicitly taken by the I2C-driver, then this semaphore is automatically taken by the I2C-bus-driver for each I2C-transfer and this is a quite expensive operation. Explicitly take the semaphore in probe() around the register-accesses done during probe, so that this only needs to be done once, rather then once per register-access. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> |
||
|---|---|---|
| .. | ||
| reset | ||
| supply | ||
| Kconfig | ||
| Makefile | ||