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
77
78
79
80
81
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/reset/ti,keystone-reset.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI Keystone SoC Reset Controller
maintainers:
- Andrew Davis <afd@ti.com>
description:
This is intended to allow SoC reset in case of software reset of selected
watchdogs. The Keystone SoCs can contain up to 4 watchdog timers to reset
SoC. Each watchdog timer event input is connected to the Reset Mux block. The
Reset Mux block can be configured to cause reset or not. Additionally soft or
hard reset can be configured.
properties:
compatible:
const: ti,keystone-reset
reg:
maxItems: 1
ti,syscon-pll:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
The phandle to syscon used to access pll controller registers and the
offset to use reset control registers.
items:
- items:
- description: phandle to pll controller syscon
- description: offset within pll controller register space
ti,syscon-dev:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
The phandle to syscon used to access device state control registers and
the offset in order to use mux block registers for all watchdogs.
items:
- items:
- description: phandle to device state control syscon
- description: offset within device state control register
ti,soft-reset:
type: boolean
description:
Boolean option indicating soft reset. By default hard reset is used.
ti,wdt-list:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
WDT list that can cause SoC reset. It's not related to WDT driver, it's
just needed to enable a SoC related reset that's triggered by one of
WDTs. The list is in format- <0>, <2>; It can be in random order and
begins from 0 to 3, as keystone can contain up to 4 SoC reset watchdogs
and can be in random order.
minItems: 1
maxItems: 4
items:
minimum: 0
maximum: 3
required:
- compatible
- reg
- ti,syscon-pll
- ti,syscon-dev
additionalProperties: false
examples:
- |
reset-controller@328 {
compatible = "ti,keystone-reset";
reg = <0x328 0x10>;
ti,syscon-pll = <&pllctrl 0xe4>;
ti,syscon-dev = <&devctrl 0x328>;
ti,wdt-list = <0>;
};
|
