1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/power/reset/atmel,sama5d2-shdwc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Microchip AT91 SAMA5D2 SHDWC Shutdown Controller
8
9 maintainers:
10 - Claudiu Beznea <claudiu.beznea@microchip.com>
11
12 description: |
13 Microchip AT91 SHDWC shutdown controller controls the power supplies VDDIO
14 and VDDCORE and the wake-up detection on debounced input lines.
15
16 properties:
17 compatible:
18 oneOf:
19 - items:
20 - const: microchip,sama7g5-shdwc
21 - const: syscon
22 - enum:
23 - atmel,sama5d2-shdwc
24 - microchip,sam9x60-shdwc
25
26 reg:
27 maxItems: 1
28
29 clocks:
30 maxItems: 1
31
32 "#address-cells":
33 const: 1
34
35 "#size-cells":
36 const: 0
37
38 debounce-delay-us:
39 description:
40 Minimum wake-up inputs debouncer period in microseconds. It is usually a
41 board-related property.
42
43 atmel,wakeup-rtc-timer:
44 description: enable real-time clock wake-up
45 type: boolean
46
47 atmel,wakeup-rtt-timer:
48 description: enable real-time timer wake-up
49 type: boolean
50
51 patternProperties:
52 "^input@[0-15]$":
53 description:
54 Wake-up input nodes. These are usually described in the "board" part of
55 the Device Tree. Note also that input 0 is linked to the wake-up pin and
56 is frequently used.
57 type: object
58 properties:
59 reg:
60 description: contains the wake-up input index
61 minimum: 0
62 maximum: 15
63
64 atmel,wakeup-active-high:
65 description:
66 The corresponding wake-up input described by the child forces the
67 wake-up of the core power supply on a high level. The default is to
68 be active low.
69 type: boolean
70
71 required:
72 - reg
73
74 additionalProperties: false
75
76 required:
77 - compatible
78 - reg
79 - clocks
80
81 allOf:
82 - if:
83 properties:
84 compatible:
85 contains:
86 const: atmel,sama5d2-shdwc
87 then:
88 properties:
89 atmel,wakeup-rtt-timer: false
90
91 additionalProperties: false
92
93 examples:
94 - |
95 shdwc: poweroff@f8048010 {
96 compatible = "atmel,sama5d2-shdwc";
97 reg = <0xf8048010 0x10>;
98 clocks = <&clk32k>;
99 #address-cells = <1>;
100 #size-cells = <0>;
101 atmel,wakeup-rtc-timer;
102 debounce-delay-us = <976>;
103
104 input@0 {
105 reg = <0>;
106 };
107
108 input@1 {
109 reg = <1>;
110 atmel,wakeup-active-high;
111 };
112 };
113
114 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.