[PATCH 1/2] dt-bindings: iio: imu: Add bindings for ADI ADIS16607

[Radu Sabau via B4 Relay]

From: Radu Sabau <radu.sabau@xxxxxxxxxx>

Add device tree bindings for the Analog Devices ADIS16607 Precision
MEMS Inertial Measurement Unit. The ADIS16607 integrates a triaxial
gyroscope, triaxial accelerometer, and temperature sensor, and
communicates over SPI Half-Duplex.

Three compatible variants are supported: adis16607-1, adis16607-2,
and adis16607-3.

The binding exposes optional properties for:
  - An external clock for sync mode (falling back to the internal 8 kHz
    clock when absent)
  - A hardware reset GPIO (active low)
  - FIFO mode for buffered data acquisition with a configurable watermark

Signed-off-by: Radu Sabau <radu.sabau@xxxxxxxxxx>
---
 .../devicetree/bindings/iio/imu/adi,adis16607.yaml | 91 ++++++++++++++++++++++
 MAINTAINERS                                        |  7 ++
 2 files changed, 98 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16607.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16607.yaml
new file mode 100644
index 000000000000..5fb1ba36e0b7
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16607.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/adi,adis16607.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADIS16607 IMU
+
+maintainers:
+  - Radu Sabau <radu.sabau@xxxxxxxxxx>
+
+description: |
+  Analog Devices ADIS16607 Precision MEMS Inertial Measurement Unit (IMU)
+  with a triaxial gyroscope, triaxial accelerometer, and temperature sensor.
+  Uses SPI Half-Duplex communication protocol.
+
+properties:
+  compatible:
+    enum:
+      - adi,adis16607-2
+      - adi,adis16607-3
+
+  reg:
+    maxItems: 1
+
+  spi-cpha: true
+
+  spi-cpol: true
+
+  spi-max-frequency:
+    maximum: 15000000
+
+  vdd-supply: true
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    description:
+      Optional external clock for sync mode. If not provided, the internal
+      8 kHz clock is used.
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      Optional GPIO for hardware reset. If specified, it will be asserted
+      during driver probe. The line is active low.
+    maxItems: 1
+
+  adi,fifo-enable:
+    type: boolean
+    description:
+      Enable hardware FIFO mode for buffered data acquisition. When enabled,
+      the driver uses the device FIFO with configurable watermark threshold
+      instead of single-sample burst reads.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - spi-cpha
+  - spi-cpol
+  - vdd-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        imu@0 {
+            compatible = "adi,adis16607-2";
+            reg = <0>;
+            spi-cpha;
+            spi-cpol;
+            spi-max-frequency = <15000000>;
+            vdd-supply = <&vdd>;
+            interrupts = <4 IRQ_TYPE_EDGE_RISING>;
+            interrupt-parent = <&gpio>;
+            clocks = <&sync_clk>;
+            reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
+            adi,fifo-enable;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index a7fd31320b38..f6ad73be5260 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1717,6 +1717,13 @@ S:	Supported
 W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml
 
+ANALOG DEVICES INC ADIS16607 DRIVER
+M:	Radu Sabau <radu.sabau@xxxxxxxxxx>
+L:	linux-iio@xxxxxxxxxxxxxxx
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/imu/adi,adis16607.yaml
+
 ANALOG DEVICES INC ADL8113 DRIVER
 M:	Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
 L:	linux-iio@xxxxxxxxxxxxxxx

-- 
2.43.0