# 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 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 Should be given if internal trickle charger diode should be disabled (superseded by aux-voltage-chargeable) deprecated: true unevaluatedProperties: false required: - compatible - reg examples: - | i2c { #address-cells = 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>; }; };