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 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom's Timer-Watchdog (aka TWD)
8
9 maintainers:
10 - Rafał Miłecki <rafal@milecki.pl>
11
12 description: |
13 Broadcom has a Timer-Watchdog block used in multiple SoCs (e.g., BCM4908,
14 BCM63xx, BCM7038). There are few variants available (they differ slightly in
15 registers layout). This block consists of: timers, watchdog and optionally a
16 software reset handler.
17
18 properties:
19 compatible:
20 items:
21 - enum:
22 - brcm,bcm4908-twd
23 - brcm,bcm7038-twd
24 - const: simple-mfd
25 - const: syscon
26
27 reg:
28 maxItems: 1
29
30 ranges: true
31
32 "#address-cells":
33 const: 1
34
35 "#size-cells":
36 const: 1
37
38 patternProperties:
39 '^timer@[a-f0-9]+$':
40 $ref: /schemas/timer/brcm,bcmbca-timer.yaml
41
42 '^watchdog@[a-f0-9]+$':
43 $ref: /schemas/watchdog/brcm,bcm7038-wdt.yaml
44
45 additionalProperties: false
46
47 required:
48 - reg
49
50 examples:
51 - |
52 timer-mfd@ff800400 {
53 compatible = "brcm,bcm4908-twd", "simple-mfd", "syscon";
54 reg = <0xff800400 0x4c>;
55 ranges = <0x00000000 0xff800400 0x4c>;
56
57 #address-cells = <1>;
58 #size-cells = <1>;
59
60 timer@0 {
61 compatible = "brcm,bcm63138-timer";
62 reg = <0x0 0x28>;
63 };
64
65 watchdog@28 {
66 compatible = "brcm,bcm7038-wdt";
67 reg = <0x28 0x8>;
68 };
69 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.