xref: /linux/Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml (revision 11a7a42ea76e61a8d2f7374ecdd95460dec4413f) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Marvell Global Timer (GTI) system watchdog
8
9maintainers:
10  - Bharat Bhushan <bbhushan2@marvell.com>
11
12allOf:
13  - $ref: watchdog.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - enum:
19          - marvell,cn9670-wdt
20          - marvell,cn10624-wdt
21
22      - items:
23          - enum:
24              - marvell,cn9880-wdt
25              - marvell,cnf9535-wdt
26          - const: marvell,cn9670-wdt
27
28      - items:
29          - enum:
30              - marvell,cn10308-wdt
31              - marvell,cnf10518-wdt
32          - const: marvell,cn10624-wdt
33
34  reg:
35    maxItems: 1
36
37  interrupts:
38    maxItems: 1
39
40  clocks:
41    maxItems: 1
42
43  clock-names:
44    items:
45      - const: refclk
46
47  marvell,wdt-timer-index:
48    $ref: /schemas/types.yaml#/definitions/uint32
49    minimum: 0
50    maximum: 63
51    description:
52      An SoC have many timers (up to 64), firmware can reserve one or more timer
53      for some other use case and configures one of the global timer as watchdog
54      timer. Firmware will update this field with the timer number configured
55      as watchdog timer.
56
57required:
58  - compatible
59  - reg
60  - interrupts
61  - clocks
62  - clock-names
63
64unevaluatedProperties: false
65
66examples:
67  - |
68    #include <dt-bindings/interrupt-controller/arm-gic.h>
69    soc {
70        #address-cells = <2>;
71        #size-cells = <2>;
72
73        watchdog@802000040000 {
74            compatible = "marvell,cn9670-wdt";
75            reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
76            interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
77            clocks = <&sclk>;
78            clock-names = "refclk";
79            marvell,wdt-timer-index = <63>;
80        };
81    };
82
83...
84