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Diffstat (limited to 'Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml new file mode 100644 index 000000000000..58dbbca27deb --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml @@ -0,0 +1,79 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rtc/abracon,abx80x.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Abracon ABX80X I2C ultra low power RTC/Alarm chip + +maintainers: + - linux-rtc@vger.kernel.org + +allOf: + - $ref: rtc.yaml# + +properties: + compatible: + description: + The wildcard 'abracon,abx80x' may be used to support a mix + of different abracon rtc`s. In this case the driver + must perform auto-detection from ID register. + enum: + - abracon,abx80x + - abracon,ab0801 + - abracon,ab0803 + - abracon,ab0804 + - abracon,ab0805 + - abracon,ab1801 + - abracon,ab1803 + - abracon,ab1804 + - abracon,ab1805 + - microcrystal,rv1805 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + abracon,tc-diode: + description: + Trickle-charge diode type. + Required to enable charging backup battery. + + Supported are 'standard' diodes with a 0.6V drop + and 'schottky' diodes with a 0.3V drop. + $ref: /schemas/types.yaml#/definitions/string + enum: + - standard + - schottky + + abracon,tc-resistor: + description: + Trickle-charge resistor value in kOhm. + Required to enable charging backup battery. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 3, 6, 11] + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rtc@69 { + compatible = "abracon,abx80x"; + reg = <0x69>; + abracon,tc-diode = "schottky"; + abracon,tc-resistor = <3>; + interrupts = <44 IRQ_TYPE_EDGE_FALLING>; + }; + }; |