[PATCH] iio: accel: yamaha-yas: Add DT bindings

[PATCH] iio: accel: yamaha-yas: Add DT bindings

[Linus Walleij]

This adds device tree bindings for the Yamaha YAS5xx
magnetometers/compass sensors.

Cc: devicetree@vger.kernel.org
Cc: phone-devel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
I am still working on the actual driver for the magnetometer
but why not send out the DT bindings for review, the
hardware variants are easy to describe.
---
 .../bindings/iio/magnetometer/yamaha,yas.yaml | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/yamaha,yas.yaml

diff --git a/Documentation/devicetree/bindings/iio/magnetometer/yamaha,yas.yaml b/Documentation/devicetree/bindings/iio/magnetometer/yamaha,yas.yaml
new file mode 100644
index 000000000000..6fc4cfe4a417
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/magnetometer/yamaha,yas.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/magnetometer/yamaha,yas.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Yamaha YAS5xx magnetometer sensors
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description:
+  The Yamaha YAS5xx magnetometers is a line of 3-axis magnetometers
+  first introduced by Yamaha in 2006 with the YAS529. Over the years
+  this magnetometer has been minatyrized and appeared in a number of
+  different variants.
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - yamaha,yas529
+          - yamaha,yas530
+          - yamaha,yas532
+          - yamaha,yas533
+          - yamaha,yas535
+          - yamaha,yas536
+          - yamaha,yas537
+          - yamaha,yas539
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+    description: The YAS5xx sensors has a RSTN pin used to reset
+      the logic inside the sensor. This GPIO line should connect
+      to that pin and be marked as GPIO_ACTIVE_LOW.
+
+  interrupts:
+    maxItems: 1
+    description: Interrupt for INT pin for variants that support
+      interrupt generation. This polarity, whether the interrupt
+      is active on the rising or the falling edge, is configurable
+      in the hardware.
+
+  vdd-supply:
+    description: An optional regulator providing core power supply
+      on the VDD pin, typically 1.8 V or 3.0 V.
+
+  iovdd-supply:
+    description: An optional regulator providing I/O power supply
+      for the I2C interface on the IOVDD pin, typically 1.8 V.
+      This is not present on all variants of the component, some
+      have only the VDD voltage.
+
+  mount-matrix:
+    description: An optional 3x3 mounting rotation matrix.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@2e {
+          compatible = "yamaha,yas530";
+          reg = <0x2e>;
+          vdd-supply = <&ldo1_reg>;
+          iovdd-supply = <&ldo2_reg>;
+          reset-gpios = <&gpio6 12 GPIO_ACTIVE_LOW>;
+        };
+    };
-- 
2.26.2