1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/watchdog/starfive,jh7100-wdt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: StarFive Watchdog for JH7100 and JH7110 SoC
8
9 maintainers:
10 - Xingyu Wu <xingyu.wu@starfivetech.com>
11 - Samin Guo <samin.guo@starfivetech.com>
12
13 description:
14 The JH7100 and JH7110 watchdog both are 32 bit counters. JH7100 watchdog
15 has only one timeout phase and reboots. And JH7110 watchdog has two
16 timeout phases. At the first phase, the signal of watchdog interrupt
17 output(WDOGINT) will rise when counter is 0. The counter will reload
18 the timeout value. And then, if counter decreases to 0 again and WDOGINT
19 isn't cleared, the watchdog will reset the system unless the watchdog
20 reset is disabled.
21
22 properties:
23 compatible:
24 oneOf:
25 - enum:
26 - starfive,jh7100-wdt
27 - starfive,jh7110-wdt
28 - items:
29 - enum:
30 - starfive,jh8100-wdt
31 - const: starfive,jh7110-wdt
32
33 reg:
34 maxItems: 1
35
36 interrupts:
37 maxItems: 1
38
39 clocks:
40 items:
41 - description: APB clock
42 - description: Core clock
43
44 clock-names:
45 items:
46 - const: apb
47 - const: core
48
49 resets:
50 minItems: 1
51 maxItems: 2
52
53 required:
54 - compatible
55 - reg
56 - clocks
57 - clock-names
58 - resets
59
60 allOf:
61 - $ref: watchdog.yaml#
62
63 - if:
64 properties:
65 compatible:
66 contains:
67 enum:
68 - starfive,jh8100-wdt
69 then:
70 properties:
71 resets:
72 items:
73 - description: Core reset
74 else:
75 properties:
76 resets:
77 items:
78 - description: APB reset
79 - description: Core reset
80
81 unevaluatedProperties: false
82
83 examples:
84 - |
85 watchdog@12480000 {
86 compatible = "starfive,jh7100-wdt";
87 reg = <0x12480000 0x10000>;
88 clocks = <&clk 171>,
89 <&clk 172>;
90 clock-names = "apb", "core";
91 resets = <&rst 99>,
92 <&rst 100>;
93 };
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