linux-kernel - [PATCH v2 1/2] dt-bindings: iio: imu: smi330: Add binding

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Message-ID: <20250513150028.42775-2-Jianping.Shen@de.bosch.com>
Date: Tue, 13 May 2025 17:00:27 +0200
From: <Jianping.Shen@...bosch.com>
To: <jic23@...nel.org>, <lars@...afoo.de>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <dima.fedrau@...il.com>,
	<marcelo.schmitt1@...il.com>, <linux-iio@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<Jianping.Shen@...bosch.com>, <Christian.Lorenz3@...bosch.com>,
	<Ulrike.Frauendorf@...bosch.com>, <Kai.Dolde@...bosch.com>
Subject: [PATCH v2 1/2] dt-bindings: iio: imu: smi330: Add binding

From: Jianping Shen <Jianping.Shen@...bosch.com>

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@...bosch.com>
---
 .../bindings/iio/imu/bosch,smi330.yaml        | 90 +++++++++++++++++++
 1 file changed, 90 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..9924fadccbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/bosch,smi330.yaml
@@ -0,0 +1,90 @@
+# 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@...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:
+    type: boolean
+    description:
+      set if the interrupt pin(s) 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