blob: 4ee920a1de69e8466935bfceece13fb6c772dc47 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/domain-idle-state.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: PM Domain Idle States binding description
maintainers:
- Ulf Hansson <ulf.hansson@linaro.org>
description:
A domain idle state node represents the state parameters that will be used to
select the state when there are no active components in the PM domain.
properties:
$nodename:
const: domain-idle-states
patternProperties:
"^(cpu|cluster|domain)-":
type: object
additionalProperties: false
description:
Each state node represents a domain idle state description.
properties:
compatible:
const: domain-idle-state
entry-latency-us:
description:
The worst case latency in microseconds required to enter the idle
state. Note that, the exit-latency-us duration may be guaranteed only
after the entry-latency-us has passed.
exit-latency-us:
description:
The worst case latency in microseconds required to exit the idle
state.
min-residency-us:
description:
The minimum residency duration in microseconds after which the idle
state will yield power benefits, after overcoming the overhead while
entering the idle state.
arm,psci-suspend-param:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
power_state parameter to pass to the ARM PSCI suspend call.
Device tree nodes that require usage of PSCI CPU_SUSPEND function
(i.e. idle states node with entry-method property is set to "psci")
must specify this property.
required:
- compatible
- entry-latency-us
- exit-latency-us
- min-residency-us
additionalProperties: false
examples:
- |
domain-idle-states {
domain_retention: domain-retention {
compatible = "domain-idle-state";
entry-latency-us = <20>;
exit-latency-us = <40>;
min-residency-us = <80>;
};
};
...
|
