[PATCH v3 1/2] dt-bindings: hwmon: Add MAX6639

[Naresh Solanki <naresh.solanki@9elements.com>]

From: Marcello Sylvester Bauer <sylv@sylv.io>

Add binding documentation for Maxim MAX6639 fan-speed controller.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
Changes in V3:
- Update title
- Add pulses-per-revolution, supplies & interrupts
Changes in V2:
- Update subject
- Drop blank lines
---
 .../bindings/hwmon/maxim,max6639.yaml         | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
new file mode 100644
index 000000000000..b3292061ca58
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/maxim,max6639.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX6639 Fan Controller
+
+maintainers:
+  - Naresh Solanki <Naresh.Solanki@9elements.com>
+
+description: |
+  The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM
+  fan-speed controller.  It monitors its own temperature and one external
+  diode-connected transistor or the temperatures of two external diode-connected
+  transistors, typically available in CPUs, FPGAs, or GPUs.
+
+  Datasheets:
+    https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf
+
+properties:
+  compatible:
+    enum:
+      - maxim,max6639
+
+  reg:
+    maxItems: 1
+
+  fan-supply:
+    description: Phandle to the regulator that provides power to the fan.
+
+  interrupts:
+    maxItems: 1
+
+  pulses-per-revolution:
+    description:
+      Define the number of pulses per fan revolution for each tachometer
+      input as an integer.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [1, 2, 3, 4]
+    default: 2
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      fan-controller@10 {
+        compatible = "maxim,max6639";
+        reg = <0x10>;
+      };
+    };
+...

base-commit: cb7022b8976e3c4d12cea2e7bb820a2944e2fd7b
-- 
2.41.0