xref: /linux/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml (revision 0d21364c6e8dc1f62c34bbc49d49935c8b01844c) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/rtc/xlnx,zynqmp-rtc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
8
9description:
10  RTC controller for the Xilinx Zynq MPSoC Real Time Clock.
11  The RTC controller has separate IRQ lines for seconds and alarm.
12
13maintainers:
14  - Michal Simek <michal.simek@amd.com>
15
16allOf:
17  - $ref: rtc.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - const: xlnx,zynqmp-rtc
23      - items:
24          - enum:
25              - xlnx,versal-rtc
26              - xlnx,versal-net-rtc
27          - const: xlnx,zynqmp-rtc
28
29  reg:
30    maxItems: 1
31
32  clocks:
33    maxItems: 1
34
35  clock-names:
36    items:
37      - const: rtc
38
39  interrupts:
40    maxItems: 2
41
42  interrupt-names:
43    items:
44      - const: alarm
45      - const: sec
46
47  calibration:
48    description: |
49      calibration value for 1 sec period which will
50      be programmed directly to calibration register.
51    $ref: /schemas/types.yaml#/definitions/uint32
52    minimum: 0x1
53    maximum: 0x1FFFFF
54    default: 0x198233
55    deprecated: true
56
57  power-domains:
58    maxItems: 1
59
60required:
61  - compatible
62  - reg
63  - interrupts
64  - interrupt-names
65
66additionalProperties: false
67
68examples:
69  - |
70    soc {
71      #address-cells = <2>;
72      #size-cells = <2>;
73
74      rtc: rtc@ffa60000 {
75        compatible = "xlnx,zynqmp-rtc";
76        reg = <0x0 0xffa60000 0x0 0x100>;
77        interrupt-parent = <&gic>;
78        interrupts = <0 26 4>, <0 27 4>;
79        interrupt-names = "alarm", "sec";
80        calibration = <0x198233>;
81        clock-names = "rtc";
82        clocks = <&rtc_clk>;
83      };
84    };
85