linux-kernel - [PATCH v2 0/3] Add support for AK09918

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Message-Id: <20240806-ak09918-v2-0-c300da66c198@mainlining.org>
Date: Tue, 06 Aug 2024 08:10:17 +0200
From: Barnabás Czémán <barnabas.czeman@...nlining.org>
To: Jonathan Cameron <jic23@...nel.org>, 
 Lars-Peter Clausen <lars@...afoo.de>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Jonathan Albrieux <jonathan.albrieux@...il.com>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, linux@...nlining.org, 
 Barnabás Czémán <barnabas.czeman@...nlining.org>, 
 Danila Tikhonov <danila@...xyga.com>
Subject: [PATCH v2 0/3] Add support for AK09918

Add support for AK09918 which is register and scaling compatible with
AK09912.

It was tested in Xiaomi Redmi 5 Plus (vince).

magnetometer@c {
  compatible = "asahi-kasei,ak09918";
  reg = <0x0c>;
  vdd-supply = <&pm8953_l6>;
  mount-matrix = "1", "0", "0",
                 "0", "1", "0",
                 "0", "0", "1";
};

Add a fix for data reading according to datasheet [1] (9.4.3.2.)
ST2 register should be read out after read measurment data as third step.
ST2 read out is required and get correct value during measurment data
read.

[1] https://www.akm.com/content/dam/documents/products/electronic-compass/ak09918c/ak09918c-en-datasheet.pdf

Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
---
Changes in v2:
- Remove unnecessary ak09918 compatbile.
- Link to v1: https://lore.kernel.org/r/20240805-ak09918-v1-0-70837eebd7d8@mainlining.org

---
Barnabás Czémán (1):
      iio: magnetometer: ak8975: Fix reading for ak099xx sensors

Danila Tikhonov (2):
      dt-bindings: iio: imu: magnetometer: Add ak09118
      iio: magnetometer: ak8975: Add AK09118 support

 .../iio/magnetometer/asahi-kasei,ak8975.yaml       |  1 +
 drivers/iio/magnetometer/Kconfig                   |  2 +-
 drivers/iio/magnetometer/ak8975.c                  | 65 ++++++++++++++++------
 3 files changed, 51 insertions(+), 17 deletions(-)
---
base-commit: d6dbc9f56c3a70e915625b6f1887882c23dc5c91
change-id: 20240805-ak09918-4a6cfef91c32

Best regards,
-- 
Barnabás Czémán <barnabas.czeman@...nlining.org>