mediatek,mtk-wdt.yaml

 1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 2%YAML 1.2
 3---
 4$id: http://devicetree.org/schemas/watchdog/mediatek,mtk-wdt.yaml#
 5$schema: http://devicetree.org/meta-schemas/core.yaml#
 6
 7title: MediaTek SoCs Watchdog timer
 8
 9maintainers:
10  - Matthias Brugger <matthias.bgg@gmail.com>
11
12description:
13  The watchdog supports a pre-timeout interrupt that fires
14  timeout-sec/2 before the expiry.
15
16allOf:
17  - $ref: watchdog.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - enum:
23          - mediatek,mt2712-wdt
24          - mediatek,mt6589-wdt
25          - mediatek,mt6735-wdt
26          - mediatek,mt6795-wdt
27          - mediatek,mt7986-wdt
28          - mediatek,mt7988-wdt
29          - mediatek,mt8183-wdt
30          - mediatek,mt8186-wdt
31          - mediatek,mt8188-wdt
32          - mediatek,mt8192-wdt
33          - mediatek,mt8195-wdt
34      - items:
35          - enum:
36              - mediatek,mt2701-wdt
37              - mediatek,mt6572-wdt
38              - mediatek,mt6582-wdt
39              - mediatek,mt6797-wdt
40              - mediatek,mt7622-wdt
41              - mediatek,mt7623-wdt
42              - mediatek,mt7629-wdt
43              - mediatek,mt8173-wdt
44              - mediatek,mt8188-wdt
45              - mediatek,mt8189-wdt
46              - mediatek,mt8365-wdt
47              - mediatek,mt8516-wdt
48          - const: mediatek,mt6589-wdt
49
50  reg:
51    maxItems: 1
52
53  interrupts:
54    items:
55      - description: Watchdog pre-timeout (bark) interrupt
56
57  mediatek,disable-extrst:
58    description: Disable sending output reset signal
59    type: boolean
60
61  mediatek,reset-by-toprgu:
62    description: The Top Reset Generation Unit (TOPRGU) generates reset signals
63      and distributes them to each IP. If present, the watchdog timer will be
64      reset by TOPRGU once system resets.
65    type: boolean
66
67  '#reset-cells':
68    const: 1
69
70required:
71  - compatible
72  - reg
73
74unevaluatedProperties: false
75
76examples:
77  - |
78    #include <dt-bindings/interrupt-controller/arm-gic.h>
79
80    soc {
81        #address-cells = <2>;
82        #size-cells = <2>;
83
84        watchdog: watchdog@10007000 {
85            compatible = "mediatek,mt8183-wdt";
86            reg = <0 0x10007000 0 0x100>;
87            interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;
88            mediatek,disable-extrst;
89            timeout-sec = <10>;
90            #reset-cells = <1>;
91        };
92    };