xref: /linux/Documentation/devicetree/bindings/rtc/renesas,sh-rtc.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/rtc/renesas,sh-rtc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Real Time Clock for Renesas SH and ARM SoCs
8
9maintainers:
10  - Chris Brandt <chris.brandt@renesas.com>
11  - Geert Uytterhoeven <geert+renesas@glider.be>
12
13properties:
14  compatible:
15    items:
16      - const: renesas,r7s72100-rtc  # RZ/A1H
17      - const: renesas,sh-rtc
18
19  reg:
20    maxItems: 1
21
22  interrupts:
23    maxItems: 3
24
25  interrupt-names:
26    items:
27      - const: alarm
28      - const: period
29      - const: carry
30
31  clocks:
32    # The functional clock source for the RTC controller must be listed
33    # first (if it exists). Additionally, potential clock counting sources
34    # are to be listed.
35    minItems: 1
36    maxItems: 4
37
38  clock-names:
39    # The functional clock must be labeled as "fck". Other clocks
40    # may be named in accordance to the SoC hardware manuals.
41    minItems: 1
42    maxItems: 4
43    items:
44      enum: [ fck, rtc_x1, rtc_x3, extal ]
45
46  power-domains:
47    maxItems: 1
48
49required:
50  - compatible
51  - reg
52  - interrupts
53  - interrupt-names
54  - clocks
55  - clock-names
56  - power-domains
57
58additionalProperties: false
59
60examples:
61  - |
62    #include <dt-bindings/clock/r7s72100-clock.h>
63    #include <dt-bindings/interrupt-controller/arm-gic.h>
64    #include <dt-bindings/interrupt-controller/irq.h>
65
66    rtc: rtc@fcff1000 {
67        compatible = "renesas,r7s72100-rtc", "renesas,sh-rtc";
68        reg = <0xfcff1000 0x2e>;
69        interrupts = <GIC_SPI 276 IRQ_TYPE_EDGE_RISING>,
70                     <GIC_SPI 277 IRQ_TYPE_EDGE_RISING>,
71                     <GIC_SPI 278 IRQ_TYPE_EDGE_RISING>;
72        interrupt-names = "alarm", "period", "carry";
73        clocks = <&mstp6_clks R7S72100_CLK_RTC>, <&rtc_x1_clk>,
74                 <&rtc_x3_clk>, <&extal_clk>;
75        power-domains = <&cpg_clocks>;
76        clock-names = "fck", "rtc_x1", "rtc_x3", "extal";
77    };
78