1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/power/apple,pmgr-pwrstate.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Apple SoC PMGR Power States
8
9 maintainers:
10 - Hector Martin <marcan@marcan.st>
11
12 allOf:
13 - $ref: power-domain.yaml#
14
15 description: |
16 Apple SoCs include PMGR blocks responsible for power management,
17 which can control various clocks, resets, power states, and
18 performance features. This binding describes the device power
19 state registers, which control power states and resets.
20
21 Each instance of a power controller within the PMGR syscon node
22 represents a generic power domain provider, as documented in
23 Documentation/devicetree/bindings/power/power-domain.yaml.
24 The provider controls a single SoC block. The power hierarchy is
25 represented via power-domains relationships between these nodes.
26
27 See Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml
28 for the top-level PMGR node documentation.
29
30 properties:
31 compatible:
32 items:
33 - enum:
34 - apple,t8103-pmgr-pwrstate
35 - apple,t6000-pmgr-pwrstate
36 - const: apple,pmgr-pwrstate
37
38 reg:
39 maxItems: 1
40
41 "#power-domain-cells":
42 const: 0
43
44 "#reset-cells":
45 const: 0
46
47 power-domains:
48 description:
49 Reference to parent power domains. A domain may have multiple parents,
50 and all will be powered up when it is powered.
51 minItems: 1
52 maxItems: 8 # Arbitrary, should be enough
53
54 label:
55 description:
56 Specifies the name of the SoC domain being controlled. This is used to
57 name the power/reset domains.
58
59 apple,always-on:
60 description:
61 Forces this power domain to always be powered up.
62 type: boolean
63
64 apple,min-state:
65 description:
66 Specifies the minimum power state for auto-PM.
67 0 = power gated, 4 = clock gated, 15 = on.
68 $ref: /schemas/types.yaml#/definitions/uint32
69 minimum: 0
70 maximum: 15
71
72 required:
73 - compatible
74 - reg
75 - "#power-domain-cells"
76 - "#reset-cells"
77 - label
78
79 additionalProperties: false
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