1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/watchdog/arm,sbsa-gwdt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: SBSA (Server Base System Architecture) Generic Watchdog
8
9 maintainers:
10 - Fu Wei <fu.wei@linaro.org>
11
12 description: |
13 The SBSA Generic Watchdog Timer is used to force a reset of the system after
14 two stages of timeout have elapsed. A detailed definition of the watchdog
15 timer can be found in the ARM document: ARM-DEN-0029 - Server Base System
16 Architecture (SBSA)
17
18 allOf:
19 - $ref: watchdog.yaml#
20
21 properties:
22 compatible:
23 const: arm,sbsa-gwdt
24
25 reg:
26 items:
27 - description: Watchdog control frame
28 - description: Refresh frame
29
30 interrupts:
31 description: The Watchdog Signal 0 (WS0) SPI (Shared Peripheral Interrupt)
32 maxItems: 1
33
34 required:
35 - compatible
36 - reg
37 - interrupts
38
39 unevaluatedProperties: false
40
41 examples:
42 - |
43 watchdog@2a440000 {
44 compatible = "arm,sbsa-gwdt";
45 reg = <0x2a440000 0x1000>,
46 <0x2a450000 0x1000>;
47 interrupts = <0 27 4>;
48 timeout-sec = <30>;
49 };
50 ...
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