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Subject[PATCH v6 2/3] dt-bindings: hwmon: Add binding for max6639
Date
From: Marcello Sylvester Bauer <sylv@sylv.io>

Add Devicetree binding documentation for Maxim MAX6639 temperature
monitor with PWM fan-speed controller.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
.../bindings/hwmon/maxim,max6639.yaml | 93 +++++++++++++++++++
1 file changed, 93 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..da040b11d2ab
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
@@ -0,0 +1,93 @@
+# 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
+
+maintainers:
+ - Roland Stigge <stigge@antcom.de>
+
+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
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ '#pwm-cells':
+ const: 3
+
+required:
+ - compatible
+ - reg
+
+patternProperties:
+ "^fan@[0-1]$":
+ type: object
+ description: |
+ Represents the two fans and their specific configuration.
+
+ $ref: fan-common.yaml#
+
+ properties:
+ reg:
+ description: |
+ The fan number.
+ items:
+ minimum: 0
+ maximum: 1
+
+ required:
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fan1: fan-controller@10 {
+ compatible = "maxim,max6639";
+ reg = <0x10>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #pwm-cells = <3>;
+
+ fan@0 {
+ reg = <0x0>;
+ pulses-per-revolution = <2>;
+ max-rpm = <4000>;
+ target-rpm = <1000>;
+ pwms = <&fan1 0 25000 0>;
+ };
+
+ fan@1 {
+ reg = <0x1>;
+ pulses-per-revolution = <2>;
+ max-rpm = <8000>;
+ pwms = <&fan1 1 25000 0>;
+ };
+ };
+ };
+...
--
2.37.3
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