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
7 title: TI dual-mode timer
8
9 maintainers:
10 - Tony Lindgren <tony@atomide.com>
11
12 description: |
13 The TI dual-mode timer is a general purpose timer with PWM capabilities.
14
15 properties:
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 $ref: /schemas/types.yaml#/definitions/string
87 deprecated: true
88
89 required:
90 - compatible
91 - reg
92
93 additionalProperties: false
94
95 allOf:
96 - if:
97 not:
98 properties:
99 compatible:
100 contains:
101 const: ti,am654-timer
102 then:
103 required:
104 - interrupts
105
106 - if:
107 not:
108 properties:
109 compatible:
110 contains:
111 enum:
112 - ti,omap3430-timer
113 - ti,omap4430-timer
114 - ti,omap5430-timer
115 then:
116 properties:
117 reg:
118 maxItems: 1
119 clocks:
120 maxItems: 1
121 clock-names:
122 maxItems: 1
123
124 - if:
125 properties:
126 compatible:
127 contains:
128 enum:
129 - ti,dm814-timer
130 - ti,dm816-timer
131 - ti,omap2420-timer
132 - ti,omap3430-timer
133 then:
134 properties:
135 ti,hwmods:
136 items:
137 - pattern: "^timer([1-9]|1[0-2])$"
138 else:
139 properties:
140 ti,hwmods: false
141
142 examples:
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 ...
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