mbox series

[0/2] add the capability to disable st_lsm6dsx sensor-hub

Message ID cover.1636552075.git.lorenzo@kernel.org (mailing list archive)
Headers show
Series add the capability to disable st_lsm6dsx sensor-hub | expand

Message

Lorenzo Bianconi Nov. 10, 2021, 2:42 p.m. UTC 
Introduce the capability to disable sensorhub through a device-tree property
since since there are some configurations where users want to
explicitly disable sensor-hub auto-probing at bootstrap.
A typical configuration is when the sensorhub clock/data lines are connected
to a pull-up resistor since no slave sensors are connected to the i2c master.
If SDO/SA0 line is connected to the same pull-up resistor, when the driver
tries to probe slave devices connected on sensor-hub, it will force SDO/SA0
line to low, modifying the device i2c address.

Lorenzo Bianconi (2):
  iio: imu: st_lsm6dsx: add dts property to disable sensor-hub
  Documentation: dt: iio: st_lsm6dsx: add disable-shub property

 Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml | 4 ++++
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c              | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)