xref: /linux/Documentation/devicetree/bindings/rtc/loongson,rtc.yaml (revision 1fd1dc41724319406b0aff221a352a400b0ddfc5) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/rtc/loongson,rtc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Loongson Real-Time Clock
8
9description:
10  The Loongson family chips use an on-chip counter 0 (Time Of Year
11  counter) as the RTC.
12
13maintainers:
14  - Binbin Zhou <zhoubinbin@loongson.cn>
15
16allOf:
17  - $ref: rtc.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - enum:
23          - loongson,ls1b-rtc
24          - loongson,ls1c-rtc
25          - loongson,ls7a-rtc
26          - loongson,ls2k0300-rtc
27          - loongson,ls2k1000-rtc
28      - items:
29          - enum:
30              - loongson,ls2k2000-rtc
31              - loongson,ls2k0500-rtc
32          - const: loongson,ls7a-rtc
33
34  reg:
35    maxItems: 1
36
37  interrupts:
38    maxItems: 1
39
40required:
41  - compatible
42  - reg
43
44unevaluatedProperties: false
45
46if:
47  properties:
48    compatible:
49      contains:
50        enum:
51          - loongson,ls1c-rtc
52          - loongson,ls2k0300-rtc
53
54then:
55  properties:
56    interrupts: false
57
58examples:
59  - |
60    #include <dt-bindings/interrupt-controller/irq.h>
61
62    rtc@1fe27800 {
63        compatible = "loongson,ls2k1000-rtc";
64        reg = <0x1fe27800 0x100>;
65
66        interrupt-parent = <&liointc1>;
67        interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
68    };
69
70...
71