1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/microchip,pac1934.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Microchip PAC1934 Power Monitors with Accumulator
8
9 maintainers:
10 - Marius Cristea <marius.cristea@microchip.com>
11
12 description: |
13 This device is part of the Microchip family of Power Monitors with
14 Accumulator.
15 The datasheet for PAC1931, PAC1932, PAC1933 and PAC1934 can be found here:
16 https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PAC1931-Family-Data-Sheet-DS20005850E.pdf
17
18 properties:
19 compatible:
20 enum:
21 - microchip,pac1931
22 - microchip,pac1932
23 - microchip,pac1933
24 - microchip,pac1934
25
26 reg:
27 maxItems: 1
28
29 "#address-cells":
30 const: 1
31
32 "#size-cells":
33 const: 0
34
35 interrupts:
36 maxItems: 1
37
38 slow-io-gpios:
39 description:
40 A GPIO used to trigger a change is sampling rate (lowering the chip power
41 consumption). If configured in SLOW mode, if this pin is forced high,
42 sampling rate is forced to eight samples/second. When it is forced low,
43 the sampling rate is 1024 samples/second unless a different sample rate
44 has been programmed.
45
46 patternProperties:
47 "^channel@[1-4]+$":
48 type: object
49 $ref: adc.yaml
50 description:
51 Represents the external channels which are connected to the ADC.
52
53 properties:
54 reg:
55 items:
56 minimum: 1
57 maximum: 4
58
59 shunt-resistor-micro-ohms:
60 description:
61 Value in micro Ohms of the shunt resistor connected between
62 the SENSE+ and SENSE- inputs, across which the current is measured.
63 Value is needed to compute the scaling of the measured current.
64
65 required:
66 - reg
67 - shunt-resistor-micro-ohms
68
69 unevaluatedProperties: false
70
71 required:
72 - compatible
73 - reg
74 - "#address-cells"
75 - "#size-cells"
76
77 additionalProperties: false
78
79 examples:
80 - |
81 i2c {
82 #address-cells = <1>;
83 #size-cells = <0>;
84
85 power-monitor@10 {
86 compatible = "microchip,pac1934";
87 reg = <0x10>;
88
89 #address-cells = <1>;
90 #size-cells = <0>;
91
92 channel@1 {
93 reg = <0x1>;
94 shunt-resistor-micro-ohms = <24900000>;
95 label = "CPU";
96 };
97
98 channel@2 {
99 reg = <0x2>;
100 shunt-resistor-micro-ohms = <49900000>;
101 label = "GPU";
102 };
103
104 channel@3 {
105 reg = <0x3>;
106 shunt-resistor-micro-ohms = <75000000>;
107 label = "MEM";
108 bipolar;
109 };
110
111 channel@4 {
112 reg = <0x4>;
113 shunt-resistor-micro-ohms = <100000000>;
114 label = "NET";
115 bipolar;
116 };
117 };
118 };
119
120 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.