[PATCH v3 0/4] iio: magnetometer: ak8975: Add gpio reset support

Jonathan Albrieux
2020-05-19T12:44:21Z

v3:
- fix patch messages style
- align reset gpio comment to kernel doc reccomendation
- introduce changelog.

v2:
- rewording of reset gpio comment and patch messages to better clarify
reset gpio behaviour.
https://lore.kernel.org/linux-iio/20200518133645.19127-1-jonathan.albrieux@gmail.com/

v1:
- initial patch submission.
https://lore.kernel.org/linux-iio/20200519065749.4624-1-jonathan.albrieux@gmail.com/

Convert documentation from txt format to yaml. Add documentation about
reset-gpio.

Deassert reset on ak8975_power_on(), assert reset on ak8975_power_off().

Without reset's deassertion during ak8975_power_on(), driver's probe fails
on ak8975_who_i_am() while checking for device identity for AK09911 chip.

AK09911 has an active low reset gpio to handle register's reset.
AK09911 datasheed says that, if not used, reset pin should be connected
to VID. This patch emulates this situation.

Jonathan Albrieux (4):
dt-bindings: iio: magnetometer: ak8975: convert txt format to yaml
dt-bindings: iio: magnetometer: ak8975: add gpio reset support
iio: magnetometer: ak8975: Fix typo, uniform measurement unit style
iio: magnetometer: ak8975: Add gpio reset support

.../bindings/iio/magnetometer/ak8975.txt | 30 --------
.../bindings/iio/magnetometer/ak8975.yaml | 70 +++++++++++++++++++
drivers/iio/magnetometer/ak8975.c | 22 +++++-
3 files changed, 90 insertions(+), 32 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt
create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.yaml

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2.17.1