[PATCH v5 4/6] dt-bindings: iio: Add adis16550 bindings

[Robert Budai <robert.budai@analog.com>]

Document the ADIS16550 device devicetree bindings.

Co-developed-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Signed-off-by: Robert Budai <robert.budai@analog.com>
---

v5:
- removed sync-mode binding
- added binding for external clock frequency
- removed adis16550w

 .../bindings/iio/imu/adi,adis16550.yaml       | 80 +++++++++++++++++++
 MAINTAINERS                                   |  9 +++
 2 files changed, 89 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml

diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml
new file mode 100644
index 000000000000..4e9406168782
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/adi,adis16550.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: Analog Devices ADIS16550 and similar IMUs
+maintainers:
+  - Nuno Sa <nuno.sa@analog.com>
+  - Ramona Gradinariu <ramona.gradinariu@analog.com>
+  - Antoniu Miclaus <antoniu.miclaus@analog.com>
+properties:
+  compatible:
+    enum:
+      - adi,adis16550
+      - adi,adis16550w
+  reg:
+    maxItems: 1
+  spi-cpha: true
+  spi-cpol: true
+  spi-max-frequency:
+    maximum: 15000000
+  vdd-supply: true
+  interrupts:
+    maxItems: 1
+  reset-gpios:
+    description:
+      Must be the device tree identifier of the RESET pin. If specified,
+      it will be asserted during driver probe. As the line is active low,
+      it should be marked GPIO_ACTIVE_LOW.
+    maxItems: 1
+  clocks:
+    description: If not provided, then the internal clock is used.
+    maxItems: 1
+  clock-frequency:
+    description: Clock frequency in Hz when an external clock is used.
+    oneOf:
+      - type: integer
+        minimum: 1
+        maximum: 128
+      - type: integer
+        minimum: 3000
+        maximum: 4500
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - spi-cpha
+  - spi-cpol
+  - spi-max-frequency
+  - vdd-supply
+
+allOf:
+  - if:
+      properties:
+        clocks:
+          maxItems: 1
+    then:
+      required:
+        - clock-frequency
+
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+additionalProperties: false
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        imu@0 {
+            compatible = "adi,adis16550";
+            reg = <0>;
+            spi-max-frequency = <15000000>;
+            spi-cpol;
+            spi-cpha;
+            vdd-supply = <&vdd>;
+            interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+            interrupt-parent = <&gpio>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index aeb5f3cc58a1..5c59a183cd3f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1479,6 +1479,15 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
 F:	drivers/iio/imu/adis16475.c
 
+ANALOG DEVICES INC ADIS16550 DRIVER
+M:	Nuno Sa <nuno.sa@analog.com>
+M:	Ramona Gradinariu <ramona.gradinariu@analog.com>
+M:	Antoniu Miclaus <antoniu.miclaus@analog.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml
+
 ANALOG DEVICES INC ADM1177 DRIVER
 M:	Michael Hennerich <Michael.Hennerich@analog.com>
 L:	linux-hwmon@vger.kernel.org
-- 
2.43.0