From: Rodrigo Alencar <rodrigo.alencar@analog.com>
Date: Mon, 16 Feb 2026 17:10:46 +0000 (+0000)
Subject: dt-bindings: iio: amplifiers: Add AD8366 support
X-Git-Tag: v7.1-rc1~17^2~120^2~179
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3cfbb50d1414a1e40c03a595eae56b6b3ffe2691;p=thirdparty%2Flinux.git

dt-bindings: iio: amplifiers: Add AD8366 support

Add device tree binding documentation for amplifiers and digital
attenuators. This covers different device variants with similar
SPI control. Each device has its own gain range and step, hence
no fallback compatibles are used.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
new file mode 100644
index 0000000000000..2719de1166a17
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/amplifiers/adi,ad8366.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AD8366 and similar Gain Amplifiers and Digital Attenuators
+
+maintainers:
+  - Michael Hennerich <michael.hennerich@analog.com>
+  - Rodrigo Alencar <rodrigo.alencar@analog.com>
+
+description:
+  Digital Variable Gain Amplifiers (VGAs) and Digital Attenuators with
+  SPI interface.
+
+properties:
+  compatible:
+    enum:
+      - adi,ad8366
+      - adi,ada4961
+      - adi,adl5240
+      - adi,adrf5720
+      - adi,adrf5730
+      - adi,adrf5731
+      - adi,hmc271a
+      - adi,hmc792a
+      - adi,hmc1018a
+      - adi,hmc1019a
+      - adi,hmc1119
+
+  reg:
+    maxItems: 1
+
+  vcc-supply:
+    description: Regulator that provides power to the device.
+
+  reset-gpios:
+    maxItems: 1
+
+  enable-gpios:
+    maxItems: 1
+    description: Power-up or Serial Mode Enable GPIO.
+
+required:
+  - compatible
+  - reg
+  - vcc-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: adi,hmc271a
+    then:
+      properties:
+        reset-gpios: false
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              anyOf:
+                - const: adi,ad8366
+                - const: adi,ada4961
+                - const: adi,adrf5720
+                - const: adi,adrf5730
+                - const: adi,adrf5731
+                - const: adi,hmc792a
+                - const: adi,hmc1018a
+                - const: adi,hmc1019a
+                - const: adi,hmc1119
+    then:
+      properties:
+        enable-gpios: false
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      amplifier@0 {
+        compatible = "adi,ad8366";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+        vcc-supply = <&vcc_3v3>;
+        enable-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+      };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 5ae0f8a7a1dd4..1c75276404df8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1600,6 +1600,7 @@ M:	Rodrigo Alencar <rodrigo.alencar@analog.com>
 L:	linux-iio@vger.kernel.org
 S:	Supported
 W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
 F:	drivers/iio/amplifiers/ad8366.c
 
 ANALOG DEVICES INC AD9467 DRIVER