99 lines
2.2 KiB
YAML
99 lines
2.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/rtc/abracon,abx80x.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Abracon ABX80X I2C ultra low power RTC/Alarm chip
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maintainers:
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- linux-rtc@vger.kernel.org
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properties:
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compatible:
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description:
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The wildcard 'abracon,abx80x' may be used to support a mix
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of different abracon rtc`s. In this case the driver
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must perform auto-detection from ID register.
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enum:
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- abracon,abx80x
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- abracon,ab0801
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- abracon,ab0803
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- abracon,ab0804
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- abracon,ab0805
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- abracon,ab1801
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- abracon,ab1803
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- abracon,ab1804
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- abracon,ab1805
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- microcrystal,rv1805
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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abracon,tc-diode:
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description:
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Trickle-charge diode type.
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Required to enable charging backup battery.
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Supported are 'standard' diodes with a 0.6V drop
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and 'schottky' diodes with a 0.3V drop.
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$ref: /schemas/types.yaml#/definitions/string
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enum:
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- standard
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- schottky
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abracon,tc-resistor:
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description:
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Trickle-charge resistor value in kOhm.
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Required to enable charging backup battery.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 3, 6, 11]
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dependentRequired:
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abracon,tc-diode: ["abracon,tc-resistor"]
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abracon,tc-resistor: ["abracon,tc-diode"]
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required:
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- compatible
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- reg
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allOf:
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- $ref: rtc.yaml#
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- if:
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properties:
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compatible:
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not:
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contains:
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enum:
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- abracon,abx80x
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- abracon,ab0804
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- abracon,ab1804
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- abracon,ab0805
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- abracon,ab1805
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then:
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properties:
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abracon,tc-diode: false
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abracon,tc-resistor: false
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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rtc@69 {
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compatible = "abracon,abx80x";
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reg = <0x69>;
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abracon,tc-diode = "schottky";
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abracon,tc-resistor = <3>;
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interrupts = <44 IRQ_TYPE_EDGE_FALLING>;
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};
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};
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