[PATCH v1 2/3] dt-bindings: iio: imu: smi330: Add binding

Jianping.Shen
2025-05-05T15:17:55Z

Add devicetree binding for Bosch imu smi330.
The smi330 is a combined three axis angular rate and
three axis acceleration sensor module.

Signed-off-by: Jianping Shen <Jianping.Shen@de.bosch.com>
---
.../bindings/iio/imu/bosch,smi330.yaml | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/imu/bosch,smi330.yaml

diff --git a/Documentation/devicetree/bindings/iio/imu/bosch,smi330.yaml b/Documentation/devicetree/bindings/iio/imu/bosch,smi330.yaml
new file mode 100644
index 00000000000..fb65bd26ada
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/bosch,smi330.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/bosch,smi330.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bosch SMI330 6-Axis IMU
+
+maintainers:
+ - Stefan Gutmann <stefam.gutmann@de.bosch.com>
+
+description:
+ SMI330 is a 6-axis inertial measurement unit that supports acceleration and
+ gyroscopic measurements with hardware fifo buffering. Sensor also provides
+ events information such as motion, no-motion and tilt detection.
+
+properties:
+ compatible:
+ const: bosch,smi330
+
+ reg:
+ maxItems: 1
+
+ vdd-supply:
+ description: provide VDD power to the sensor.
+
+ vddio-supply:
+ description: provide VDD IO power to the sensor.
+
+ interrupts:
+ minItems: 1
+ maxItems: 2
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum:
+ - INT1
+ - INT2
+
+ drive-open-drain:
+ description:
+ set if the specified interrupt pin should be configured as
+ open drain. If not set, defaults to push-pull.
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ // Example for I2C
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ imu@68 {
+ compatible = "bosch,smi330";
+ reg = <0x68>;
+ vddio-supply = <&vddio>;
+ vdd-supply = <&vdd>;
+ interrupt-parent = <&gpio>;
+ interrupts = <26 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "INT1";
+ };
+ };
+
+ // Example for SPI
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ imu@0 {
+ compatible = "bosch,smi330";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ interrupt-parent = <&gpio>;
+ interrupts = <26 IRQ_TYPE_EDGE_RISING>, <20 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "INT1", "INT2";
+ };
+ };
--
2.34.1