xref: /linux/Documentation/devicetree/bindings/watchdog/alphascale,asm9260-wdt.yaml (revision 4db102dcb0396a4ccf89b1eac0f4eb3fd167a080) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/watchdog/alphascale,asm9260-wdt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Alphascale asm9260 Watchdog timer
8
9maintainers:
10  - Oleksij Rempel <linux@rempel-privat.de>
11
12allOf:
13  - $ref: watchdog.yaml#
14
15properties:
16  compatible:
17    const: alphascale,asm9260-wdt
18
19  reg:
20    maxItems: 1
21
22  clocks:
23    items:
24      - description: source clock, used for tick counter
25      - description: ahb gate
26
27  clock-names:
28    items:
29      - const: mod
30      - const: ahb
31
32  interrupts:
33    maxItems: 1
34
35  resets:
36    maxItems: 1
37
38  reset-names:
39    items:
40      - const: wdt_rst
41
42  alphascale,mode:
43    description: |
44      Specifies the reset mode of operation. If set to sw, then reset is handled
45      via interrupt request, if set to debug, then it does nothing and logs.
46    $ref: /schemas/types.yaml#/definitions/string
47    enum: [hw, sw, debug]
48    default: hw
49
50required:
51  - compatible
52  - reg
53  - clocks
54  - clock-names
55  - interrupts
56
57unevaluatedProperties: false
58
59examples:
60  - |
61    #include <dt-bindings/clock/alphascale,asm9260.h>
62    watchdog0: watchdog@80048000 {
63      compatible = "alphascale,asm9260-wdt";
64      reg = <0x80048000 0x10>;
65      clocks = <&acc CLKID_SYS_WDT>, <&acc CLKID_AHB_WDT>;
66      clock-names = "mod", "ahb";
67      interrupts = <55>;
68      timeout-sec = <30>;
69      alphascale,mode = "hw";
70    };
71