xref: /linux/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml (revision 69bfec7548f4c1595bac0e3ddfc0458a5af31f4c) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/watchdog/fsl-imx-wdt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale i.MX Watchdog Timer (WDT) Controller
8
9maintainers:
10  - Anson Huang <Anson.Huang@nxp.com>
11
12properties:
13  compatible:
14    oneOf:
15      - const: fsl,imx21-wdt
16      - items:
17          - enum:
18              - fsl,imx25-wdt
19              - fsl,imx27-wdt
20              - fsl,imx31-wdt
21              - fsl,imx35-wdt
22              - fsl,imx50-wdt
23              - fsl,imx51-wdt
24              - fsl,imx53-wdt
25              - fsl,imx6q-wdt
26              - fsl,imx6sl-wdt
27              - fsl,imx6sll-wdt
28              - fsl,imx6sx-wdt
29              - fsl,imx6ul-wdt
30              - fsl,imx7d-wdt
31              - fsl,imx8mm-wdt
32              - fsl,imx8mn-wdt
33              - fsl,imx8mp-wdt
34              - fsl,imx8mq-wdt
35              - fsl,ls1012a-wdt
36              - fsl,ls1043a-wdt
37              - fsl,vf610-wdt
38          - const: fsl,imx21-wdt
39
40  reg:
41    maxItems: 1
42
43  interrupts:
44    maxItems: 1
45
46  clocks:
47    maxItems: 1
48
49  fsl,ext-reset-output:
50    $ref: /schemas/types.yaml#/definitions/flag
51    description: |
52      If present, the watchdog device is configured to assert its
53      external reset (WDOG_B) instead of issuing a software reset.
54
55  fsl,suspend-in-wait:
56    $ref: /schemas/types.yaml#/definitions/flag
57    description: |
58      If present, the watchdog device is suspended in WAIT mode
59      (Suspend-to-Idle). Only supported on certain devices.
60
61required:
62  - compatible
63  - interrupts
64  - reg
65
66allOf:
67  - $ref: watchdog.yaml#
68  - if:
69      not:
70        properties:
71          compatible:
72            contains:
73              enum:
74                - fsl,imx25-wdt
75                - fsl,imx35-wdt
76                - fsl,imx50-wdt
77                - fsl,imx51-wdt
78                - fsl,imx53-wdt
79                - fsl,imx6q-wdt
80                - fsl,imx6sl-wdt
81                - fsl,imx6sll-wdt
82                - fsl,imx6sx-wdt
83                - fsl,imx6ul-wdt
84                - fsl,imx7d-wdt
85                - fsl,imx8mm-wdt
86                - fsl,imx8mn-wdt
87                - fsl,imx8mp-wdt
88                - fsl,imx8mq-wdt
89                - fsl,vf610-wdt
90    then:
91      properties:
92        fsl,suspend-in-wait: false
93
94unevaluatedProperties: false
95
96examples:
97  - |
98    #include <dt-bindings/interrupt-controller/arm-gic.h>
99    #include <dt-bindings/clock/imx6qdl-clock.h>
100
101    watchdog@20bc000 {
102        compatible = "fsl,imx21-wdt";
103        reg = <0x020bc000 0x4000>;
104        interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
105        clocks = <&clks IMX6QDL_CLK_IPG>;
106    };
107
108...
109