Add a schema for the Analog Devices AD7147 CapTouch controller used by
the Microsoft Lumia 950 and Lumia 950 XL device trees. Document its I2C
address, interrupt, and optional vcc supply.

Assisted-by: LLM
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
v2:
 - Fix filename to match compatible
---
 .../bindings/input/adi,ad7147_captouch.yaml   | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/adi,ad7147_captouch.yaml

diff --git a/Documentation/devicetree/bindings/input/adi,ad7147_captouch.yaml b/Documentation/devicetree/bindings/input/adi,ad7147_captouch.yaml
new file mode 100644
index 000000000000..1120b85276a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/adi,ad7147_captouch.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/adi,ad7147_captouch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7147 CapTouch Programmable Controller
+
+maintainers:
+  - Michael Hennerich <michael.hennerich@analog.com>
+
+properties:
+  compatible:
+    const: adi,ad7147_captouch
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vcc-supply: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touch@2c {
+            compatible = "adi,ad7147_captouch";
+            reg = <0x2c>;
+            interrupt-parent = <&tlmm>;
+            interrupts = <96 IRQ_TYPE_EDGE_FALLING>;
+            vcc-supply = <&vreg_l18a_2p85>;
+        };
+    };
+
+...
-- 
2.53.0