xref: /linux/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml (revision 4f2c0a4acffbec01079c28f839422e64ddeff004) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/iio/temperature/maxim,max31856.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Maxim MAX31856 thermocouple support
8
9maintainers:
10  - Jonathan Cameron <jic23@kernel.org>
11
12description: |
13  https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf
14
15properties:
16  compatible:
17    const: maxim,max31856
18
19  reg:
20    maxItems: 1
21
22  spi-cpha: true
23
24  thermocouple-type:
25    $ref: /schemas/types.yaml#/definitions/uint32
26    description:
27      Type of thermocouple (THERMOCOUPLE_TYPE_K if omitted).
28      Use defines in dt-bindings/iio/temperature/thermocouple.h.
29      Supported types are B, E, J, K, N, R, S, T.
30
31required:
32  - compatible
33  - reg
34  - spi-cpha
35
36allOf:
37  - $ref: /schemas/spi/spi-peripheral-props.yaml#
38
39unevaluatedProperties: false
40
41examples:
42  - |
43    #include <dt-bindings/iio/temperature/thermocouple.h>
44    spi {
45        #address-cells = <1>;
46        #size-cells = <0>;
47
48        temp-sensor@0 {
49            compatible = "maxim,max31856";
50            reg = <0>;
51            spi-max-frequency = <5000000>;
52            spi-cpha;
53            thermocouple-type = <THERMOCOUPLE_TYPE_K>;
54        };
55    };
56...
57