dt-bindings: iio: adc: maxim,max9611 yaml conversions

Straight forward conversion of this binding for this
current sense amplifier and ADC.

Signed-off-by: Jonathan Cameron <[e-mail]>
Reviewed-by: Jacopo Mondi <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/iio/adc/max9611.txt

···
-* Maxim max9611/max9612 current sense amplifier with 12-bits ADC interface
-
-Maxim max9611/max9612 is an high-side current sense amplifier with integrated
-12-bits ADC communicating over I2c bus.
-The device node for this driver shall be a child of a I2c controller.
-
-Required properties
-  - compatible: Should be "maxim,max9611" or "maxim,max9612"
-  - reg: The 7-bits long I2c address of the device
-  - shunt-resistor-micro-ohms: Value, in micro Ohms, of the current sense shunt
-			        resistor
-
-Example:
-
-&i2c4 {
-	csa: adc@7c {
-		compatible = "maxim,max9611";
-		reg = <0x7c>;
-
-		shunt-resistor-micro-ohms = <5000>;
-	};
-};
-
-This device node describes a current sense amplifier sitting on I2c4 bus
-with address 0x7c (read address is 0xf9, write address is 0xf8).
-A sense resistor of 0,005 Ohm is installed between RS+ and RS- current-sensing
-inputs.

Documentation/devicetree/bindings/iio/adc/maxim,max9611.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/maxim,max9611.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX9611 and similar current sense amplifiers with integrated ADCs
+
+maintainers:
+  - Jacopo Mondi <[e-mail]>
+
+description: |
+   These devices combine a high-side current sense amplifier with a 12 bit ADC.
+   They have an i2c interface.
+
+properties:
+  compatible:
+    enum:
+      - maxim,max9611
+      - maxim,max9612
+
+  reg:
+    maxItems: 1
+
+  shunt-resistor-micro-ohms:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Value in micro Ohms of the shunt resistor connected between the RS+ and
+      RS- inputs, across which the current is measured.  Value needed to compute
+      the scaling of the measured current.
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - shunt-resistor-micro-ohms
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@7c {
+            compatible = "maxim,max9611";
+            reg = <0x7c>;
+            shunt-resistor-micro-ohms = <5000>;
+        };
+    };
+...