xref: /linux/Documentation/devicetree/bindings/spmi/spmi.yaml (revision a70bb580bfeaead9f685d4c28f7cd685c905d8c3) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spmi/spmi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: System Power Management Interface (SPMI) Controller
8
9maintainers:
10  - Stephen Boyd <sboyd@kernel.org>
11
12description: |
13  The System Power Management (SPMI) controller is a 2-wire bus defined
14  by the MIPI Alliance for power management control to be used on SoC designs.
15
16  SPMI controllers are modelled in device tree using a generic set of
17  bindings defined here, plus any bus controller specific properties, if
18  needed.
19
20  Each SPMI controller has zero or more child nodes (up to 16 ones), each
21  one representing an unique slave at the bus.
22
23properties:
24  $nodename:
25    pattern: "^spmi@.*"
26
27  reg:
28    maxItems: 1
29
30  "#address-cells":
31    const: 2
32
33  "#size-cells":
34    const: 0
35
36patternProperties:
37  "@[0-9a-f]$":
38    description: up to 16 child PMIC nodes
39    type: object
40
41    properties:
42      reg:
43        items:
44          - minItems: 1
45            items:
46              - minimum: 0
47                maximum: 0xf
48              - enum: [ 0 ]
49                description:
50                  0 means user ID address. 1 is reserved for group ID
51                  address.
52
53    required:
54      - reg
55
56required:
57  - reg
58
59additionalProperties: true
60
61examples:
62  - |
63    #include <dt-bindings/spmi/spmi.h>
64
65    spmi@0 {
66      reg = <0 0>;
67
68      #address-cells = <2>;
69      #size-cells = <0>;
70
71      child@0 {
72        reg = <0 SPMI_USID>;
73      };
74
75      child@7 {
76        reg = <7 SPMI_USID>;
77      };
78    };
79