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
12allOf:
13  - $ref: "watchdog.yaml#"
14
15properties:
16  compatible:
17    oneOf:
18      - const: fsl,imx21-wdt
19      - items:
20          - enum:
21              - fsl,imx8mm-wdt
22              - fsl,imx8mn-wdt
23              - fsl,imx8mp-wdt
24              - fsl,imx8mq-wdt
25          - const: fsl,imx21-wdt
26
27  reg:
28    maxItems: 1
29
30  interrupts:
31    maxItems: 1
32
33  clocks:
34    maxItems: 1
35
36  fsl,ext-reset-output:
37    $ref: /schemas/types.yaml#/definitions/flag
38    description: |
39      If present, the watchdog device is configured to assert its
40      external reset (WDOG_B) instead of issuing a software reset.
41
42required:
43  - compatible
44  - interrupts
45  - reg
46
47unevaluatedProperties: false
48
49examples:
50  - |
51    #include <dt-bindings/interrupt-controller/arm-gic.h>
52    #include <dt-bindings/clock/imx6qdl-clock.h>
53
54    watchdog@20bc000 {
55        compatible = "fsl,imx21-wdt";
56        reg = <0x020bc000 0x4000>;
57        interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
58        clocks = <&clks IMX6QDL_CLK_IPG>;
59    };
60
61...
62