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[v2,0/2] add the capability to disable st_lsm6dsx sensor-hub

Message ID cover.1636816719.git.lorenzo@kernel.org (mailing list archive)
Headers show
Series add the capability to disable st_lsm6dsx sensor-hub | expand

Message

Lorenzo Bianconi Nov. 13, 2021, 3:23 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.

Changes since v1:
- rename disable-shub property in disable-sensor-hub
- improve commit log

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

 Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml | 7 +++++++
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c              | 4 +++-
 2 files changed, 10 insertions(+), 1 deletion(-)