[PATCH v3 1/2] dt-bindings: switch: adg1712: add adg1712 support

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

Add devicetree bindings for adg1712 SPST quad switch.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
Changes in v3:
- Move bindings from gpio/ to switch/ subsystem
- Remove gpio-controller interface
- Add 'switch-states' property for initial configuration
- Update description and example
---
 .../bindings/switch/adi,adg1712.yaml          | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/switch/adi,adg1712.yaml

diff --git a/Documentation/devicetree/bindings/switch/adi,adg1712.yaml b/Documentation/devicetree/bindings/switch/adi,adg1712.yaml
new file mode 100644
index 000000000000..eed142eb5b05
--- /dev/null
+++ b/Documentation/devicetree/bindings/switch/adi,adg1712.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/switch/adi,adg1712.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADG1712 quad SPST switch controller
+
+maintainers:
+  - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+  Bindings for Analog Devices ADG1712 quad single-pole, single-throw (SPST)
+  switch controlled by GPIOs. The device features four independent switches,
+  each controlled by a dedicated GPIO input pin.
+
+  The switches are configured at probe time based on device tree properties
+  and cannot be changed from userspace after initialization.
+
+properties:
+  compatible:
+    const: adi,adg1712
+
+  switch-gpios:
+    description: |
+      Array of GPIOs connected to the IN1-IN4 control pins.
+      Index 0 corresponds to IN1 (controls SW1),
+      Index 1 corresponds to IN2 (controls SW2),
+      Index 2 corresponds to IN3 (controls SW3),
+      Index 3 corresponds to IN4 (controls SW4).
+    minItems: 4
+    maxItems: 4
+
+  switch-states:
+    description: |
+      Initial states for the four switches (SW1-SW4).
+      Each element corresponds to the desired state of the respective switch:
+      0 = switch disabled (open), 1 = switch enabled (closed).
+      If not specified, all switches default to disabled (0).
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      minimum: 0
+      maximum: 1
+    minItems: 4
+    maxItems: 4
+
+required:
+  - compatible
+  - switch-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    adg1712: switch-controller {
+        compatible = "adi,adg1712";
+
+        switch-gpios = <&gpio 10 GPIO_ACTIVE_HIGH>,
+                       <&gpio 11 GPIO_ACTIVE_HIGH>,
+                       <&gpio 12 GPIO_ACTIVE_HIGH>,
+                       <&gpio 13 GPIO_ACTIVE_HIGH>;
+
+        /* Enable SW1 and SW3, disable SW2 and SW4 */
+        switch-states = <1 0 1 0>;
+    };
+...
-- 
2.43.0