xref: /linux/Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml (revision 66da65005aa819e0b8d3a08f5ec1491b7690cb67) 
1# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/timer/xlnx,xps-timer.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Xilinx LogiCORE IP AXI Timer Device Tree Binding
8
9maintainers:
10  - Sean Anderson <sean.anderson@seco.com>
11
12properties:
13  compatible:
14    contains:
15      const: xlnx,xps-timer-1.00.a
16
17  clocks:
18    maxItems: 1
19
20  clock-names:
21    const: s_axi_aclk
22
23  interrupts:
24    maxItems: 1
25
26  reg:
27    maxItems: 1
28
29  '#pwm-cells': true
30
31  xlnx,count-width:
32    $ref: /schemas/types.yaml#/definitions/uint32
33    enum: [8, 16, 32]
34    default: 32
35    description:
36      The width of the counter(s), in bits.
37
38  xlnx,one-timer-only:
39    $ref: /schemas/types.yaml#/definitions/uint32
40    enum: [ 0, 1 ]
41    description:
42      Whether only one timer is present in this block.
43
44required:
45  - compatible
46  - reg
47  - xlnx,one-timer-only
48
49allOf:
50  - if:
51      required:
52        - '#pwm-cells'
53    then:
54      allOf:
55        - required:
56            - clocks
57        - properties:
58            xlnx,one-timer-only:
59              const: 0
60    else:
61      required:
62        - interrupts
63  - if:
64      required:
65        - clocks
66    then:
67      required:
68        - clock-names
69
70additionalProperties: false
71
72examples:
73  - |
74    timer@800e0000 {
75        clock-names = "s_axi_aclk";
76        clocks = <&zynqmp_clk 71>;
77        compatible = "xlnx,xps-timer-1.00.a";
78        reg = <0x800e0000 0x10000>;
79        interrupts = <0 39 2>;
80        xlnx,count-width = <16>;
81        xlnx,one-timer-only = <0x0>;
82    };
83
84    timer@800f0000 {
85        #pwm-cells = <0>;
86        clock-names = "s_axi_aclk";
87        clocks = <&zynqmp_clk 71>;
88        compatible = "xlnx,xps-timer-1.00.a";
89        reg = <0x800e0000 0x10000>;
90        xlnx,count-width = <32>;
91        xlnx,one-timer-only = <0x0>;
92    };
93