xref: /linux/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml (revision a3a02a52bcfcbcc4a637d4b68bf1bc391c9fad02) 
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  - Shawn Guo <shawnguo@kernel.org>
11  - Sascha Hauer <s.hauer@pengutronix.de>
12  - Fabio Estevam <festevam@gmail.com>
13
14properties:
15  compatible:
16    oneOf:
17      - const: fsl,imx21-wdt
18      - items:
19          - enum:
20              - fsl,imx25-wdt
21              - fsl,imx27-wdt
22              - fsl,imx31-wdt
23              - fsl,imx35-wdt
24              - fsl,imx50-wdt
25              - fsl,imx51-wdt
26              - fsl,imx53-wdt
27              - fsl,imx6q-wdt
28              - fsl,imx6sl-wdt
29              - fsl,imx6sll-wdt
30              - fsl,imx6sx-wdt
31              - fsl,imx6ul-wdt
32              - fsl,imx7d-wdt
33              - fsl,imx8mm-wdt
34              - fsl,imx8mn-wdt
35              - fsl,imx8mp-wdt
36              - fsl,imx8mq-wdt
37              - fsl,ls1012a-wdt
38              - fsl,ls1043a-wdt
39              - fsl,vf610-wdt
40          - const: fsl,imx21-wdt
41
42  reg:
43    maxItems: 1
44
45  interrupts:
46    maxItems: 1
47
48  clocks:
49    maxItems: 1
50
51  fsl,ext-reset-output:
52    $ref: /schemas/types.yaml#/definitions/flag
53    description: |
54      If present, the watchdog device is configured to assert its
55      external reset (WDOG_B) instead of issuing a software reset.
56
57  fsl,suspend-in-wait:
58    $ref: /schemas/types.yaml#/definitions/flag
59    description: |
60      If present, the watchdog device is suspended in WAIT mode
61      (Suspend-to-Idle). Only supported on certain devices.
62
63required:
64  - compatible
65  - interrupts
66  - reg
67
68allOf:
69  - $ref: watchdog.yaml#
70  - if:
71      not:
72        properties:
73          compatible:
74            contains:
75              enum:
76                - fsl,imx25-wdt
77                - fsl,imx35-wdt
78                - fsl,imx50-wdt
79                - fsl,imx51-wdt
80                - fsl,imx53-wdt
81                - fsl,imx6q-wdt
82                - fsl,imx6sl-wdt
83                - fsl,imx6sll-wdt
84                - fsl,imx6sx-wdt
85                - fsl,imx6ul-wdt
86                - fsl,imx7d-wdt
87                - fsl,imx8mm-wdt
88                - fsl,imx8mn-wdt
89                - fsl,imx8mp-wdt
90                - fsl,imx8mq-wdt
91                - fsl,vf610-wdt
92    then:
93      properties:
94        fsl,suspend-in-wait: false
95
96unevaluatedProperties: false
97
98examples:
99  - |
100    #include <dt-bindings/interrupt-controller/arm-gic.h>
101    #include <dt-bindings/clock/imx6qdl-clock.h>
102
103    watchdog@20bc000 {
104        compatible = "fsl,imx21-wdt";
105        reg = <0x020bc000 0x4000>;
106        interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
107        clocks = <&clks IMX6QDL_CLK_IPG>;
108    };
109
110...
111