1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/rtc/nvidia,tegra20-rtc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: NVIDIA Tegra real-time clock
8
9 maintainers:
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12
13 description: |
14 The Tegra RTC maintains seconds and milliseconds counters, and five
15 alarm registers. The alarms and other interrupts may wake the system
16 from low-power state.
17
18 properties:
19 compatible:
20 oneOf:
21 - const: nvidia,tegra20-rtc
22 - items:
23 - enum:
24 - nvidia,tegra30-rtc
25 - nvidia,tegra114-rtc
26 - nvidia,tegra124-rtc
27 - nvidia,tegra210-rtc
28 - nvidia,tegra186-rtc
29 - nvidia,tegra194-rtc
30 - nvidia,tegra234-rtc
31 - const: nvidia,tegra20-rtc
32
33 reg:
34 maxItems: 1
35
36 interrupts:
37 maxItems: 1
38
39 clocks:
40 maxItems: 1
41
42 clock-names:
43 items:
44 - const: rtc
45
46 additionalProperties: false
47
48 required:
49 - compatible
50 - reg
51 - interrupts
52 - clocks
53
54 examples:
55 - |
56 timer@7000e000 {
57 compatible = "nvidia,tegra20-rtc";
58 reg = <0x7000e000 0x100>;
59 interrupts = <0 2 0x04>;
60 clocks = <&tegra_car 4>;
61 };
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