tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/clock/renesas,r9a08g045-vbattb.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas Battery Backup Function (VBATTB)
8
9description:
10 Renesas VBATTB is an always on powered module (backed by battery) which
11 controls the RTC clock (VBATTCLK), tamper detection logic and a small
12 general usage memory (128B).
13
14maintainers:
15 - Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
16
17properties:
18 compatible:
19 const: renesas,r9a08g045-vbattb
20
21 reg:
22 maxItems: 1
23
24 interrupts:
25 items:
26 - description: tamper detector interrupt
27
28 clocks:
29 items:
30 - description: VBATTB module clock
31 - description: RTC input clock (crystal or external clock device)
32
33 clock-names:
34 items:
35 - const: bclk
36 - const: rtx
37
38 '#clock-cells':
39 const: 1
40
41 power-domains:
42 maxItems: 1
43
44 resets:
45 items:
46 - description: VBATTB module reset
47
48 quartz-load-femtofarads:
49 description: load capacitance of the on board crystal
50 enum: [ 4000, 7000, 9000, 12500 ]
51 default: 4000
52
53required:
54 - compatible
55 - reg
56 - interrupts
57 - clocks
58 - clock-names
59 - '#clock-cells'
60 - power-domains
61 - resets
62
63additionalProperties: false
64
65examples:
66 - |
67 #include <dt-bindings/clock/r9a08g045-cpg.h>
68 #include <dt-bindings/clock/renesas,r9a08g045-vbattb.h>
69 #include <dt-bindings/interrupt-controller/arm-gic.h>
70 #include <dt-bindings/interrupt-controller/irq.h>
71
72 clock-controller@1005c000 {
73 compatible = "renesas,r9a08g045-vbattb";
74 reg = <0x1005c000 0x1000>;
75 interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>;
76 clocks = <&cpg CPG_MOD R9A08G045_VBAT_BCLK>, <&vbattb_xtal>;
77 clock-names = "bclk", "rtx";
78 assigned-clocks = <&vbattb VBATTB_MUX>;
79 assigned-clock-parents = <&vbattb VBATTB_XC>;
80 #clock-cells = <1>;
81 power-domains = <&cpg>;
82 resets = <&cpg R9A08G045_VBAT_BRESETN>;
83 quartz-load-femtofarads = <12500>;
84 };