[PATCH 2/2] dt-bindings: touchscreen: ad7877: add bindings

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

Add device tree bindings for the ad7877 driver.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
 .../input/touchscreen/adi,ad7877.yaml         | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml
new file mode 100644
index 000000000000..5fc5124c5999
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/adi,ad7877.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/adi,ad7877.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7877 Touch Screen Controller
+
+maintainers:
+  - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+  Analog Devices Touch Screen Controller
+  https://www.analog.com/media/en/technical-documentation/data-sheets/AD7877.pdf
+
+allOf:
+  - $ref: touchscreen.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,ad7877
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  spi-max-frequency:
+    description: AD7877 SPI bus clock frequency.
+    minimum: 10000
+    maximum: 20000000
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      touchscreen@0 {
+        compatible = "adi,ad7877";
+        reg = <0>;
+        spi-max-frequency = <20000000>;
+        interrupts = <21 IRQ_TYPE_EDGE_FALLING>;
+        interrupt-parent = <&gpio>;
+      };
+    };
+...
-- 
2.46.0