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,max31855k.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Maxim MAX31855 and similar thermocouples
8
9 maintainers:
10 - Matt Ranostay <matt.ranostay@konsulko.com>
11
12 description: |
13 https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf
14 https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf
15
16 properties:
17 compatible:
18 description:
19 The generic maxim,max31855 compatible is deprecated in favour of
20 the thermocouple type specific variants.
21 enum:
22 - maxim,max6675
23 - maxim,max31855
24 - maxim,max31855k
25 - maxim,max31855j
26 - maxim,max31855n
27 - maxim,max31855s
28 - maxim,max31855t
29 - maxim,max31855e
30 - maxim,max31855r
31
32 reg:
33 maxItems: 1
34
35 spi-cpha: true
36
37 required:
38 - compatible
39 - reg
40
41 allOf:
42 - $ref: /schemas/spi/spi-peripheral-props.yaml#
43 - if:
44 properties:
45 compatible:
46 contains:
47 enum:
48 - maxim,max6675
49 then:
50 required:
51 - spi-cpha
52 else:
53 properties:
54 spi-cpha: false
55
56 unevaluatedProperties: false
57
58 examples:
59 - |
60 spi {
61 #address-cells = <1>;
62 #size-cells = <0>;
63
64 temp-sensor@0 {
65 compatible = "maxim,max31855k";
66 reg = <0>;
67 spi-max-frequency = <4300000>;
68 };
69 temp-sensor@1 {
70 compatible = "maxim,max6675";
71 reg = <1>;
72 spi-max-frequency = <4300000>;
73 spi-cpha;
74 };
75 };
76 ...
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