dt-bindings: rtc: abx80x: convert to yaml

Convert the abracon abx80x rtc text bindings to dt-schema format.

In addition to the text description reference generic interrupts
properties and add an example.
Signed-off-by: Josua Mayer <josua@solid-run.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240219-rtc-abracon-convert-bindings-v7-1-aca4fc3b8cec@solid-run.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Documentation/devicetree/bindings/rtc/abracon,abx80x.txt

-Abracon ABX80X I2C ultra low power RTC/Alarm chip
-
-The Abracon ABX80X family consist of the ab0801, ab0803, ab0804, ab0805, ab1801,
-ab1803, ab1804 and ab1805. The ab0805 is the superset of ab080x and the ab1805
-is the superset of ab180x.
-
-Required properties:
-
- - "compatible": should one of:
-        "abracon,abx80x"
-        "abracon,ab0801"
-        "abracon,ab0803"
-        "abracon,ab0804"
-        "abracon,ab0805"
-        "abracon,ab1801"
-        "abracon,ab1803"
-        "abracon,ab1804"
-        "abracon,ab1805"
-        "microcrystal,rv1805"
-	Using "abracon,abx80x" will enable chip autodetection.
- - "reg": I2C bus address of the device
-
-Optional properties:
-
-The abx804 and abx805 have a trickle charger that is able to charge the
-connected battery or supercap. Both the following properties have to be defined
-and valid to enable charging:
-
- - "abracon,tc-diode": should be "standard" (0.6V) or "schottky" (0.3V)
- - "abracon,tc-resistor": should be <0>, <3>, <6> or <11>. 0 disables the output
-                          resistor, the other values are in kOhm.

Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/abracon,abx80x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Abracon ABX80X I2C ultra low power RTC/Alarm chip
+
+maintainers:
+  - linux-rtc@vger.kernel.org
+
+allOf:
+  - $ref: rtc.yaml#
+
+properties:
+  compatible:
+    description:
+      The wildcard 'abracon,abx80x' may be used to support a mix
+      of different abracon rtc`s. In this case the driver
+      must perform auto-detection from ID register.
+    enum:
+      - abracon,abx80x
+      - abracon,ab0801
+      - abracon,ab0803
+      - abracon,ab0804
+      - abracon,ab0805
+      - abracon,ab1801
+      - abracon,ab1803
+      - abracon,ab1804
+      - abracon,ab1805
+      - microcrystal,rv1805
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  abracon,tc-diode:
+    description:
+      Trickle-charge diode type.
+      Required to enable charging backup battery.
+
+      Supported are 'standard' diodes with a 0.6V drop
+      and 'schottky' diodes with a 0.3V drop.
+    $ref: /schemas/types.yaml#/definitions/string
+    enum:
+      - standard
+      - schottky
+
+  abracon,tc-resistor:
+    description:
+      Trickle-charge resistor value in kOhm.
+      Required to enable charging backup battery.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 3, 6, 11]
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rtc@69 {
+            compatible = "abracon,abx80x";
+            reg = <0x69>;
+            abracon,tc-diode = "schottky";
+            abracon,tc-resistor = <3>;
+            interrupts = <44 IRQ_TYPE_EDGE_FALLING>;
+        };
+    };