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
7 title: Freescale i.MX Watchdog Timer (WDT) Controller
8
9 maintainers:
10 - Shawn Guo <shawnguo@kernel.org>
11 - Sascha Hauer <s.hauer@pengutronix.de>
12 - Fabio Estevam <festevam@gmail.com>
13
14 properties:
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
63 required:
64 - compatible
65 - interrupts
66 - reg
67
68 allOf:
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
96 unevaluatedProperties: false
97
98 examples:
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 ...
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