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Linux kernel mirror (for testing)
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1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/rtc/allwinner,sun6i-a31-rtc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Allwinner A31 RTC Device Tree Bindings
8
9maintainers:
10 - Chen-Yu Tsai <wens@csie.org>
11 - Maxime Ripard <mripard@kernel.org>
12
13properties:
14 "#clock-cells":
15 const: 1
16
17 compatible:
18 oneOf:
19 - const: allwinner,sun6i-a31-rtc
20 - const: allwinner,sun8i-a23-rtc
21 - const: allwinner,sun8i-h3-rtc
22 - const: allwinner,sun8i-r40-rtc
23 - const: allwinner,sun8i-v3-rtc
24 - const: allwinner,sun50i-h5-rtc
25 - items:
26 - const: allwinner,sun50i-a64-rtc
27 - const: allwinner,sun8i-h3-rtc
28 - const: allwinner,sun50i-h6-rtc
29
30 reg:
31 maxItems: 1
32
33 interrupts:
34 minItems: 1
35 maxItems: 2
36 items:
37 - description: RTC Alarm 0
38 - description: RTC Alarm 1
39
40 clocks:
41 maxItems: 1
42
43 clock-output-names:
44 minItems: 1
45 maxItems: 3
46 description:
47 The RTC provides up to three clocks
48 - the Low Frequency Oscillator or LOSC, at index 0,
49 - the Low Frequency Oscillator External output (X32KFOUT in
50 the datasheet), at index 1,
51 - the Internal Oscillator, at index 2.
52
53allOf:
54 - $ref: "rtc.yaml#"
55 - if:
56 properties:
57 compatible:
58 contains:
59 const: allwinner,sun6i-a31-rtc
60
61 then:
62 properties:
63 clock-output-names:
64 minItems: 1
65 maxItems: 1
66
67 - if:
68 properties:
69 compatible:
70 contains:
71 enum:
72 - allwinner,sun8i-a23-rtc
73 - allwinner,sun8i-r40-rtc
74 - allwinner,sun8i-v3-rtc
75
76 then:
77 properties:
78 clock-output-names:
79 minItems: 2
80 maxItems: 2
81
82 - if:
83 properties:
84 compatible:
85 contains:
86 enum:
87 - allwinner,sun8i-h3-rtc
88 - allwinner,sun50i-h5-rtc
89
90 then:
91 properties:
92 clock-output-names:
93 minItems: 3
94 maxItems: 3
95
96 - if:
97 properties:
98 compatible:
99 contains:
100 const: allwinner,sun50i-h6-rtc
101
102 then:
103 properties:
104 clock-output-names:
105 minItems: 3
106 maxItems: 3
107
108 - if:
109 properties:
110 compatible:
111 contains:
112 const: allwinner,sun8i-r40-rtc
113
114 then:
115 properties:
116 interrupts:
117 minItems: 1
118 maxItems: 1
119
120 else:
121 properties:
122 interrupts:
123 minItems: 2
124 maxItems: 2
125
126required:
127 - "#clock-cells"
128 - compatible
129 - reg
130 - interrupts
131 - clock-output-names
132
133additionalProperties: false
134
135examples:
136 - |
137 rtc: rtc@1f00000 {
138 compatible = "allwinner,sun6i-a31-rtc";
139 reg = <0x01f00000 0x400>;
140 interrupts = <0 40 4>, <0 41 4>;
141 clock-output-names = "osc32k";
142 clocks = <&ext_osc32k>;
143 #clock-cells = <1>;
144 };
145
146...