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[0/3] iio: magnetometer: ak8975: Add gpio reset support

Message ID 20200518133645.19127-1-jonathan.albrieux@gmail.com (mailing list archive)
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Series iio: magnetometer: ak8975: Add gpio reset support | expand

Message

Jonathan Albrieux May 18, 2020, 1:36 p.m. UTC 
Convert documentation from txt format to yaml. Add documentation about
reset-gpio. 

Set reset gpio to high on ak8975_power_on, set reset gpio to low on
ak8975_power_off.

Without setting it to high on ak8975_power_on driver's probe fails
on ak8975_who_i_am while checking for device identity for AK09911 chip

AK09911 has a reset gpio to handle register's reset. If reset gpio is
set to low it will trigger the reset. AK09911 datasheed says that if not
used reset pin should be connected to VID and this patch emulates this
situation

Jonathan Albrieux (3):
  dt-bindings: iio: magnetometer: ak8975: convert txt format to yaml
  dt-bindings: iio: magnetometer: ak8975: add gpio reset support
  iio: magnetometer: ak8975: Add gpio reset support

 .../bindings/iio/magnetometer/ak8975.txt      | 30 --------
 .../bindings/iio/magnetometer/ak8975.yaml     | 70 +++++++++++++++++++
 drivers/iio/magnetometer/ak8975.c             | 21 +++++-
 3 files changed, 89 insertions(+), 32 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt
 create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.yaml