# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: NXP S32G2/S32G3 Real Time Clock (RTC)
maintainers:
- Bogdan Hamciuc <bogdan.hamciuc@nxp.com>
- Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
description:
RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup source.
It is not kept alive during system reset and it is not battery-powered.
allOf:
- $ref: rtc.yaml#
properties:
compatible:
oneOf:
- enum:
- nxp,s32g2-rtc
- items:
- const: nxp,s32g3-rtc
- const: nxp,s32g2-rtc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: ipg clock drives the access to the RTC iomapped registers
- description: Clock source for the RTC module. Can be selected between
4 different clock sources using an integrated hardware mux.
On S32G2/S32G3 SoCs, 'source0' is the SIRC clock (~32KHz) and it is
available during standby and runtime. 'source1' is reserved and cannot
be used. 'source2' is the FIRC clock and it is only available during
runtime providing a better resolution (~48MHz). 'source3' is an external
RTC clock source which can be additionally added in hardware.
clock-names:
items:
- const: ipg
- enum: [ source0, source1, source2, source3 ]
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
rtc@40060000 {
compatible = "nxp,s32g3-rtc",
"nxp,s32g2-rtc";
reg = <0x40060000 0x1000>;
interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks 54>, <&clks 55>;
clock-names = "ipg", "source0";
};
