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The abracon,tc-diode and abracon,tc-resistor DT properties are only valid for the ABx0804 and ABx0805. Furthermore, they must both be present, or neither of them must be specified. Add rules to check this. The generic abracon,abx08x compatible string doesn't indicate which chip variant is used, but performs auto-detection at runtime. It must this also allow the two above properties. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20240305080944.17991-1-laurent.pinchart@ideasonboard.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
98 lines
2.2 KiB
YAML
98 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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