xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/magnetometer/asahi-kasei,ak8975.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: AsahiKASEI AK8975 magnetometer sensor

maintainers:
  - Jonathan Albrieux <jonathan.albrieux@gmail.com>

properties:
  compatible:
    oneOf:
      - enum:
          - asahi-kasei,ak8975
          - asahi-kasei,ak8963
          - asahi-kasei,ak09911
          - asahi-kasei,ak09912
      - enum:
          - ak8975
          - ak8963
          - ak09911
          - ak09912
        deprecated: true

  reg:
    maxItems: 1

  gpios:
    maxItems: 1
    description: |
      AK8975 has a "Data ready" pin (DRDY) which informs that data
      is ready to be read and is possible to listen on it. If used,
      this should be active high. Prefer interrupt over this.

  interrupts:
    maxItems: 1
    description: interrupt for DRDY pin. Triggered on rising edge.

  vdd-supply:
    description: |
      an optional regulator that needs to be on to provide VDD power to
      the sensor.

  mount-matrix:
    description: an optional 3x3 mounting rotation matrix.

  reset-gpios:
    description: |
      an optional pin needed for AK09911 to set the reset state. This should
      be usually active low

required:
  - compatible
  - reg

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/gpio/gpio.h>
    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        magnetometer@c {
            compatible = "asahi-kasei,ak8975";
            reg = <0x0c>;
            interrupt-parent = <&gpio6>;
            interrupts = <15 IRQ_TYPE_EDGE_RISING>;
            vdd-supply = <&ldo_3v3_gnss>;
            reset-gpios = <&msmgpio 111 GPIO_ACTIVE_LOW>;
            mount-matrix = "-0.984807753012208",  /* x0 */
                           "0",                   /* y0 */
                           "-0.173648177666930",  /* z0 */
                           "0",                   /* x1 */
                           "-1",                  /* y1 */
                           "0",                   /* z1 */
                           "-0.173648177666930",  /* x2 */
                           "0",                   /* y2 */
                           "0.984807753012208";   /* z2 */
        };
    };