tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP S32G2/S32G3 Real Time Clock (RTC)
8
9maintainers:
10 - Bogdan Hamciuc <bogdan.hamciuc@nxp.com>
11 - Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
12
13description:
14 RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup source.
15 It is not kept alive during system reset and it is not battery-powered.
16
17allOf:
18 - $ref: rtc.yaml#
19
20properties:
21 compatible:
22 oneOf:
23 - enum:
24 - nxp,s32g2-rtc
25 - items:
26 - const: nxp,s32g3-rtc
27 - const: nxp,s32g2-rtc
28
29 reg:
30 maxItems: 1
31
32 interrupts:
33 maxItems: 1
34
35 clocks:
36 items:
37 - description: ipg clock drives the access to the RTC iomapped registers
38 - description: Clock source for the RTC module. Can be selected between
39 4 different clock sources using an integrated hardware mux.
40 On S32G2/S32G3 SoCs, 'source0' is the SIRC clock (~32KHz) and it is
41 available during standby and runtime. 'source1' is reserved and cannot
42 be used. 'source2' is the FIRC clock and it is only available during
43 runtime providing a better resolution (~48MHz). 'source3' is an external
44 RTC clock source which can be additionally added in hardware.
45
46 clock-names:
47 items:
48 - const: ipg
49 - enum: [ source0, source1, source2, source3 ]
50
51required:
52 - compatible
53 - reg
54 - interrupts
55 - clocks
56 - clock-names
57
58additionalProperties: false
59
60examples:
61 - |
62 #include <dt-bindings/interrupt-controller/arm-gic.h>
63 #include <dt-bindings/interrupt-controller/irq.h>
64
65 rtc@40060000 {
66 compatible = "nxp,s32g3-rtc",
67 "nxp,s32g2-rtc";
68 reg = <0x40060000 0x1000>;
69 interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
70 clocks = <&clks 54>, <&clks 55>;
71 clock-names = "ipg", "source0";
72 };