xref: /linux/Documentation/devicetree/bindings/timer/ti,timer-dm.yaml (revision 24bce201d79807b668bf9d9e0aca801c5c0d5f78) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/timer/ti,timer-dm.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: TI dual-mode timer
8
9maintainers:
10  - Tony Lindgren <tony@atomide.com>
11
12description: |
13  The TI dual-mode timer is a general purpose timer with PWM capabilities.
14
15properties:
16  compatible:
17    oneOf:
18      - items:
19          - enum:
20              - ti,am335x-timer
21              - ti,am335x-timer-1ms
22              - ti,am654-timer
23              - ti,dm814-timer
24              - ti,dm816-timer
25              - ti,omap2420-timer
26              - ti,omap3430-timer
27              - ti,omap4430-timer
28              - ti,omap5430-timer
29      - items:
30          - const: ti,am4372-timer
31          - const: ti,am335x-timer
32      - items:
33          - const: ti,am4372-timer-1ms
34          - const: ti,am335x-timer-1ms
35
36  reg:
37    items:
38      - description: IO address
39      - description: L3 to L4 mapping for omap4/5 L4 ABE
40    minItems: 1
41
42  clocks:
43    items:
44      - description: Functional clock
45      - description: System clock for omap4/5 and dra7
46    minItems: 1
47
48  clock-names:
49    items:
50      - const: fck
51      - const: timer_sys_ck
52    minItems: 1
53
54  interrupts:
55    description:
56      Interrupt if available. The timer PWM features may be usable
57      in a limited way even without interrupts.
58    maxItems: 1
59
60  ti,timer-alwon:
61    description:
62      Timer is always enabled when the SoC is powered. Note that some SoCs like
63      am335x can suspend to PM coprocessor RTC only mode and in that case the
64      SoC power is cut including timers.
65    type: boolean
66
67  ti,timer-dsp:
68    description:
69      Timer is routable to the DSP in addition to the operating system.
70    type: boolean
71
72  ti,timer-pwm:
73    description:
74      Timer has been wired for PWM capability.
75    type: boolean
76
77  ti,timer-secure:
78    description:
79      Timer access has been limited to secure mode only.
80    type: boolean
81
82  ti,hwmods:
83    description:
84      Name of the HWMOD associated with timer. This is for legacy
85      omap2/3 platforms only.
86    $ref: /schemas/types.yaml#/definitions/string
87    deprecated: true
88
89required:
90  - compatible
91  - reg
92
93additionalProperties: false
94
95allOf:
96  - if:
97      not:
98        properties:
99          compatible:
100            contains:
101              const: ti,am654-timer
102    then:
103      required:
104        - interrupts
105
106  - if:
107      not:
108        properties:
109          compatible:
110            contains:
111              enum:
112                - ti,omap3430-timer
113                - ti,omap4430-timer
114                - ti,omap5430-timer
115    then:
116      properties:
117        reg:
118          maxItems: 1
119        clocks:
120          maxItems: 1
121        clock-names:
122          maxItems: 1
123
124  - if:
125      properties:
126        compatible:
127          contains:
128            enum:
129              - ti,dm814-timer
130              - ti,dm816-timer
131              - ti,omap2420-timer
132              - ti,omap3430-timer
133    then:
134      properties:
135        ti,hwmods:
136          items:
137            - pattern: "^timer([1-9]|1[0-2])$"
138    else:
139      properties:
140        ti,hwmods: false
141
142examples:
143  - |
144    timer1: timer@0 {
145      compatible = "ti,am335x-timer-1ms";
146      reg = <0x0 0x400>;
147      interrupts = <67>;
148      ti,timer-alwon;
149      clocks = <&timer1_fck>;
150      clock-names = "fck";
151    };
152...
153