# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id:
http://devicetree.org/schemas/rtc/rtc-ds1307.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Dallas DS1307 and compatible RTC
maintainers:
- Alexandre Belloni <alexandre.belloni@bootlin.com>
properties:
compatible:
oneOf:
- enum:
- dallas,ds1307
- dallas,ds1308
- dallas,ds1337
- dallas,ds1338
- dallas,ds1339
- dallas,ds1388
- dallas,ds1340
- dallas,ds1341
- maxim,ds3231
- st,m41t0
- st,m41t00
- st,m41t11
- microchip,mcp7940x
- microchip,mcp7941x
- pericom,pt7c4338
- epson,rx8025
- isil,isl12057
- epson,rx8130
- items:
- enum:
- st,m41t00
- const: dallas,ds1338
reg:
maxItems: 1
interrupts:
minItems: 1
maxItems: 2
interrupt-names:
maxItems: 2
"#clock-cells":
const: 1
clock-output-names:
description: From common clock binding to override the default output clock name.
wakeup-source:
description: Enables wake up of host system on alarm.
vcc-supply: true
allOf:
- $ref: rtc.yaml
- if:
properties:
compatible:
contains:
enum:
- dallas,ds1339
- dallas,ds1340
- dallas,ds1388
then:
properties:
trickle-resistor-ohms:
description: Selected resistor for trickle charger. Should be specified if trickle
charger should be enabled.
enum: [ 250, 2000, 4000 ]
trickle-diode-disable:
description: Do not use internal trickle charger diode. Should be given if internal
trickle charger diode should be disabled (superseded by aux-voltage-chargeable)
deprecated: true
unevaluatedProperties: false
required:
- compatible
- reg
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
rtc@68 {
compatible = "dallas,ds1337";
reg = <0x68>;
interrupt-parent = <&gpio4>;
interrupts = <20 0>;
trickle-resistor-ohms = <250>;
};
};
