dt-bindings:iio:dac:ti,dac7612 yaml conversion

Simple conversion from txt to yaml.  No significant adjustments.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Link: https://lore.kernel.org/r/20201031134110.724233-16-jic23@kernel.org

Documentation/devicetree/bindings/iio/dac/ti,dac7612.txt

-* Texas Instruments Dual, 12-Bit Serial Input Digital-to-Analog Converter
-
-The DAC7612 is a dual, 12-bit digital-to-analog converter (DAC) with guaranteed
-12-bit monotonicity performance over the industrial temperature range.
-Is is programmable through an SPI interface.
-
-The internal DACs are loaded when the LOADDACS pin is pulled down.
-
-https://www.ti.com/lit/ds/sbas106/sbas106.pdf
-
-Required Properties:
-- compatible: Should be one of:
-		"ti,dac7612"
-		"ti,dac7612u"
-		"ti,dac7612ub"
-- reg: Definition as per Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Optional Properties:
-- ti,loaddacs-gpios: GPIO descriptor for the LOADDACS pin.
-- spi-*: Definition as per Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Example:
-
-	dac@1 {
-		compatible = "ti,dac7612";
-		reg = <0x1>;
-		ti,loaddacs-gpios = <&msmgpio 25 GPIO_ACTIVE_LOW>;
-	};

Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/ti,dac7612.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DAC7612 family of DACs
+
+description:
+  The DAC7612 is a dual, 12-bit digital-to-analog converter (DAC) with
+  guaranteed 12-bit monotonicity performance over the industrial temperature
+  range. Is is programmable through an SPI interface.
+
+maintainers:
+  - Ricardo Ribalda Delgado <ricardo@ribalda.com>
+
+properties:
+  compatible:
+    enum:
+      - ti,dac7612
+      - ti,dac7612u
+      - ti,dac7612ub
+
+  reg:
+    maxItems: 1
+
+  ti,loaddacs-gpios:
+    description:
+      DACs are loaded when the pin connected to this GPIO is pulled low.
+    maxItems: 1
+
+  spi-max-frequency: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@1 {
+            compatible = "ti,dac7612";
+            reg = <0x1>;
+            ti,loaddacs-gpios = <&msmgpio 25 GPIO_ACTIVE_LOW>;
+        };
+    };
+...