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Message-Id: <20250411-add_newport_driver-v1-7-15082160b019@tdk.com>
Date: Fri, 11 Apr 2025 13:28:39 +0000
From: Remi Buisson via B4 Relay <devnull+remi.buisson.tdk.com@...nel.org>
To: Jonathan Cameron <jic23@...nel.org>,
David Lechner <dlechner@...libre.com>,
Nuno Sá <nuno.sa@...log.com>,
Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
devicetree@...r.kernel.org, Remi Buisson <remi.buisson@....com>
Subject: [PATCH 7/8] dt-bindings: iio: imu: Add inv_icm45600 documentation
From: Remi Buisson <remi.buisson@....com>
Document the ICM-456xxx devices devicetree bindings.
Describe custom sysfs API for controlling the power modes.
Signed-off-by: Remi Buisson <remi.buisson@....com>
---
.../ABI/testing/sysfs-bus-iio-inv_icm45600 | 37 ++++++
.../bindings/iio/imu/invensense,icm45600.yaml | 136 +++++++++++++++++++++
2 files changed, 173 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-inv_icm45600 b/Documentation/ABI/testing/sysfs-bus-iio-inv_icm45600
new file mode 100644
index 0000000000000000000000000000000000000000..8d2d9b68ad9e35fe0d6c157e984afc327eab92ec
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-inv_icm45600
@@ -0,0 +1,37 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_power_mode
+KernelVersion: 6.16
+Contact: linux-iio@...r.kernel.org
+Description:
+ Accelerometer power mode. Setting this attribute will set the
+ requested power mode to use if the ODR support it. If ODR
+ support only 1 mode, power mode will be enforced.
+ Reading this attribute will return the current accelerometer
+ power mode if the sensor is on, or the requested value if the
+ sensor is off. The value between real and requested value can
+ be different for ODR supporting only 1 mode.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_power_mode_available
+KernelVersion: 6.16
+Contact: linux-iio@...r.kernel.org
+Description:
+ List of available accelerometer power modes that can be set in
+ in_accel_power_mode attribute.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_power_mode
+KernelVersion: 6.16
+Contact: linux-iio@...r.kernel.org
+Description:
+ Gyroscope power mode. Setting this attribute will set the
+ requested power mode to use if the ODR support it. If ODR
+ support only 1 mode, power mode will be enforced.
+ Reading this attribute will return the current gyroscope
+ power mode if the sensor is on, or the requested value if the
+ sensor is off. The value between real and requested value can
+ be different for ODR supporting only 1 mode.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_power_mode_available
+KernelVersion: 6.16
+Contact: linux-iio@...r.kernel.org
+Description:
+ List of available gyroscope power modes that can be set in
+ in_anglvel_power_mode attribute.
diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,icm45600.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,icm45600.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..51455f0b5cb90abdd823f154e45891ad364296e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/invensense,icm45600.yaml
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/invensense,icm45600.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: InvenSense ICM-456xx Inertial Measurement Unit
+
+maintainers:
+ - Remi Buisson <remi.buisson@....com>
+
+description: |
+ 6-axis MotionTracking device that combines a 3-axis gyroscope and a 3-axis
+ accelerometer.
+
+ It has a configurable host interface that supports I3C, I2C and SPI serial
+ communication, features up to 8kB FIFO and 2 programmable interrupts with
+ ultra-low-power wake-on-motion support to minimize system power consumption.
+
+ Other industry-leading features include InvenSense on-chip APEX Motion
+ Processing engine for gesture recognition, activity classification, and
+ pedometer, along with programmable digital filters, and an embedded
+ temperature sensor.
+
+ https://invensense.tdk.com/wp-content/uploads/documentation/DS-000576_ICM-45605.pdf
+
+properties:
+ compatible:
+ enum:
+ - invensense,icm45605
+ - invensense,icm45686
+ - invensense,icm45688p
+ - invensense,icm45608
+ - invensense,icm45634
+ - invensense,icm45689
+ - invensense,icm45606
+ - invensense,icm45687
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ minItems: 1
+ maxItems: 2
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum:
+ - INT1
+ - INT2
+ description: Choose chip interrupt pin to be used as interrupt input.
+
+ drive-open-drain:
+ type: boolean
+
+ vdd-supply:
+ description: Regulator that provides power to the sensor
+
+ vddio-supply:
+ description: Regulator that provides power to the bus
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-names
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ icm45605@68 {
+ compatible = "invensense,icm45605";
+ reg = <0x68>;
+ interrupt-parent = <&gpio2>;
+ interrupt-names = "INT1";
+ interrupts = <7 IRQ_TYPE_EDGE_RAISING>;
+ vdd-supply = <&vdd>;
+ vddio-supply = <&vddio>;
+ mount-matrix = "1", "0", "0",
+ "0", "1", "0",
+ "0", "0", "1";
+ };
+ };
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ icm45605@0 {
+ compatible = "invensense,icm45605";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ interrupt-parent = <&gpio1>;
+ interrupt-names = "INT1";
+ interrupts = <6 IRQ_TYPE_EDGE_RAISING>;
+ vdd-supply = <&vdd>;
+ vddio-supply = <&vddio>;
+ mount-matrix = "1", "0", "0",
+ "0", "1", "0",
+ "0", "0", "1";
+ };
+ };
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i3c {
+ #address-cells = <3>;
+ #size-cells = <0>;
+
+ icm45600@68,46A00000011 {
+ compatible = "invensense,icm45600";
+ reg = <0x68 0x46A 0x84>;
+ interrupt-parent = <&gpio1>;
+ interrupt-names = "INT1";
+ interrupts = <5 IRQ_TYPE_EDGE_RISING>;
+ vdd-supply = <&vdd>;
+ vddio-supply = <&vddio>;
+ mount-matrix = "1", "0", "0",
+ "0", "1", "0",
+ "0", "0", "1";
+ };
+ };
--
2.34.1
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