1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mfd/brcm,twd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom's Timer-Watchdog (aka TWD)
8
9 maintainers:
10 - Rafał Miłecki <rafal@milecki.pl>
11
12 description: |
13 Broadcom has a Timer-Watchdog block used in multiple SoCs (e.g., BCM4908,
14 BCM63xx, BCM7038). There are few variants available (they differ slightly in
15 registers layout). This block consists of: timers, watchdog and optionally a
16 software reset handler.
17
18 properties:
19 compatible:
20 items:
21 - enum:
22 - brcm,bcm4908-twd
23 - brcm,bcm7038-twd
24 - const: simple-mfd
25 - const: syscon
26
27 reg:
28 maxItems: 1
29
30 ranges: true
31
32 "#address-cells":
33 const: 1
34
35 "#size-cells":
36 const: 1
37
38 patternProperties:
39 '^watchdog@[a-f0-9]+$':
40 $ref: /schemas/watchdog/brcm,bcm7038-wdt.yaml
41
42 additionalProperties: false
43
44 required:
45 - reg
46
47 examples:
48 - |
49 timer-mfd@ff800400 {
50 compatible = "brcm,bcm4908-twd", "simple-mfd", "syscon";
51 reg = <0xff800400 0x4c>;
52 ranges = <0x00000000 0xff800400 0x4c>;
53
54 #address-cells = <1>;
55 #size-cells = <1>;
56
57 watchdog@28 {
58 compatible = "brcm,bcm7038-wdt";
59 reg = <0x28 0x8>;
60 };
61 };
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