xref: /linux/Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml (revision 7f71507851fc7764b36a3221839607d3a45c2025) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2024 Amlogic, Inc. All rights reserved
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/rtc/amlogic,a4-rtc.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Amlogic A4 and A5 RTC
9
10maintainers:
11  - Yiting Deng <yiting.deng@amlogic.com>
12  - Xianwei Zhao <xianwei.zhao@amlogic.com>
13
14allOf:
15  - $ref: rtc.yaml#
16
17properties:
18  compatible:
19    enum:
20      - amlogic,a4-rtc
21      - amlogic,a5-rtc
22
23  reg:
24    maxItems: 1
25
26  clocks:
27    items:
28      - description: RTC clock source, available 24M or 32K crystal
29          oscillator source. when using 24M, need to divide 24M into 32K.
30      - description: RTC module accesses the clock of the apb bus.
31
32  clock-names:
33    items:
34      - const: osc
35      - const: sys
36
37  interrupts:
38    maxItems: 1
39
40required:
41  - compatible
42  - reg
43  - clocks
44  - clock-names
45  - interrupts
46
47additionalProperties: false
48
49examples:
50  - |
51    #include <dt-bindings/interrupt-controller/arm-gic.h>
52    apb {
53        #address-cells = <2>;
54        #size-cells = <2>;
55
56        rtc@8e600 {
57            compatible = "amlogic,a4-rtc";
58            reg = <0x0 0x8e600 0x0 0x38>;
59            clocks = <&xtal_32k>, <&clkc_periphs 1>;
60            clock-names = "osc", "sys";
61            interrupts = <GIC_SPI 131 IRQ_TYPE_EDGE_RISING>;
62        };
63    };
64