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
7 title: Maxim MAX31856 thermocouple support
8
9 maintainers:
10 - Jonathan Cameron <jic23@kernel.org>
11
12 description: |
13 https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf
14
15 properties:
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
31 required:
32 - compatible
33 - reg
34 - spi-cpha
35
36 allOf:
37 - $ref: /schemas/spi/spi-peripheral-props.yaml#
38
39 unevaluatedProperties: false
40
41 examples:
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 ...
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