1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/watchdog/at 4 $id: http://devicetree.org/schemas/watchdog/atmel,sama5d4-wdt.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Atmel SAMA5D4 Watchdog Timer (WDT) Cont 7 title: Atmel SAMA5D4 Watchdog Timer (WDT) Controller
8 8
9 maintainers: 9 maintainers:
10 - Eugen Hristev <eugen.hristev@microchip.com> 10 - Eugen Hristev <eugen.hristev@microchip.com>
11 11
12 allOf: 12 allOf:
13 - $ref: watchdog.yaml# 13 - $ref: watchdog.yaml#
14 14
15 properties: 15 properties:
16 compatible: 16 compatible:
17 oneOf: !! 17 enum:
18 - enum: !! 18 - atmel,sama5d4-wdt
19 - atmel,sama5d4-wdt !! 19 - microchip,sam9x60-wdt
20 - microchip,sam9x60-wdt !! 20 - microchip,sama7g5-wdt
21 - microchip,sama7g5-wdt <<
22 - items: <<
23 - const: microchip,sam9x7-wdt <<
24 - const: microchip,sam9x60-wdt <<
25 21
26 reg: 22 reg:
27 maxItems: 1 23 maxItems: 1
28 24
29 interrupts: 25 interrupts:
30 maxItems: 1 26 maxItems: 1
31 27
32 atmel,watchdog-type: 28 atmel,watchdog-type:
33 $ref: /schemas/types.yaml#/definitions/str 29 $ref: /schemas/types.yaml#/definitions/string
34 description: should be hardware or softwar 30 description: should be hardware or software.
35 oneOf: 31 oneOf:
36 - description: 32 - description:
37 Enable watchdog fault reset. A watch 33 Enable watchdog fault reset. A watchdog fault triggers
38 watchdog reset. 34 watchdog reset.
39 const: hardware 35 const: hardware
40 - description: 36 - description:
41 Enable watchdog fault interrupt. A w 37 Enable watchdog fault interrupt. A watchdog fault asserts
42 watchdog interrupt. 38 watchdog interrupt.
43 const: software 39 const: software
44 default: hardware 40 default: hardware
45 41
46 atmel,idle-halt: 42 atmel,idle-halt:
47 $ref: /schemas/types.yaml#/definitions/fla 43 $ref: /schemas/types.yaml#/definitions/flag
48 description: | 44 description: |
49 present if you want to stop the watchdog 45 present if you want to stop the watchdog when the CPU is in idle state.
50 CAUTION: This property should be used wi 46 CAUTION: This property should be used with care, it actually makes the
51 watchdog not counting when the CPU is in 47 watchdog not counting when the CPU is in idle state, therefore the
52 watchdog reset time depends on mean CPU 48 watchdog reset time depends on mean CPU usage and will not reset at all
53 if the CPU stop working while it is in i 49 if the CPU stop working while it is in idle state, which is probably
54 not what you want. 50 not what you want.
55 51
56 atmel,dbg-halt: 52 atmel,dbg-halt:
57 $ref: /schemas/types.yaml#/definitions/fla 53 $ref: /schemas/types.yaml#/definitions/flag
58 description: | 54 description: |
59 present if you want to stop the watchdog 55 present if you want to stop the watchdog when the CPU is in debug state.
60 56
61 required: 57 required:
62 - compatible 58 - compatible
63 - reg 59 - reg
64 60
65 unevaluatedProperties: false 61 unevaluatedProperties: false
66 62
67 examples: 63 examples:
68 - | 64 - |
69 #include <dt-bindings/interrupt-controller 65 #include <dt-bindings/interrupt-controller/irq.h>
70 66
71 watchdog@fc068640 { 67 watchdog@fc068640 {
72 compatible = "atmel,sama5d4-wdt"; 68 compatible = "atmel,sama5d4-wdt";
73 reg = <0xfc068640 0x10>; 69 reg = <0xfc068640 0x10>;
74 interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5> 70 interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>;
75 timeout-sec = <10>; 71 timeout-sec = <10>;
76 atmel,watchdog-type = "hardware"; 72 atmel,watchdog-type = "hardware";
77 atmel,dbg-halt; 73 atmel,dbg-halt;
78 atmel,idle-halt; 74 atmel,idle-halt;
79 }; 75 };
80 76
81 ... 77 ...
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