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    Subject[PATCH v4 2/2] dt-bindings: rtc: add max313xx RTCs
    Date
    Devicetree binding documentation for Analog Devices MAX313XX RTCs

    Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com>
    Signed-off-by: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@analog.com>
    ---
    .../devicetree/bindings/rtc/adi,max313xx.yaml | 142 ++++++++++++++++++
    1 file changed, 142 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/rtc/adi,max313xx.yaml

    diff --git a/Documentation/devicetree/bindings/rtc/adi,max313xx.yaml b/Documentation/devicetree/bindings/rtc/adi,max313xx.yaml
    new file mode 100644
    index 000000000..bed6d0bc4
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/rtc/adi,max313xx.yaml
    @@ -0,0 +1,142 @@
    +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    +# Copyright 2022 Analog Devices Inc.
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/rtc/adi,max313xx.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Analog Devices MAX313XX series I2C RTCs
    +
    +maintainers:
    + - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
    + - Zeynep Arslanbenzer <Zeynep.Arslanbenzer@analog.com>
    +
    +description: Analog Devices MAX313XX series I2C RTCs.
    +
    +properties:
    + compatible:
    + enum:
    + - adi,max31328
    + - adi,max31329
    + - adi,max31331
    + - adi,max31334
    + - adi,max31341
    + - adi,max31342
    + - adi,max31343
    +
    + reg:
    + description: I2C address of the RTC
    + items:
    + - enum: [0x68, 0x69]
    +
    + interrupts:
    + description: |
    + Alarm1 interrupt line of the RTC. Some of the RTCs have two interrupt
    + lines and alarm1 interrupt muxing depends on the clockin/clockout
    + configuration.
    + maxItems: 1
    +
    + "#clock-cells":
    + description: |
    + RTC can be used as a clock source through its clock output pin when
    + supplied.
    + const: 0
    +
    + clocks:
    + description: |
    + RTC uses this clock for clock input when supplied. Clock has to provide
    + one of these four frequencies: 1Hz, 50Hz, 60Hz or 32.768kHz.
    + maxItems: 1
    +
    + aux-voltage-chargeable: true
    +
    + trickle-resistor-ohms:
    + description: Enables trickle charger with specified resistor value.
    + enum: [3000, 6000, 11000]
    +
    + adi,trickle-diode-enable:
    + description: Charge the auxiliary voltage with a diode.
    + type: boolean
    +
    +additionalProperties: false
    +
    +allOf:
    + - $ref: rtc.yaml#
    + - if:
    + properties:
    + compatible:
    + contains:
    + enum:
    + - adi,max31328
    + - adi,max31342
    +
    + then:
    + properties:
    + aux-voltage-chargeable: false
    + trickle-resistor-ohms: false
    +
    + - if:
    + properties:
    + compatible:
    + contains:
    + enum:
    + - adi,max31328
    + - adi,max31331
    + - adi,max31334
    + - adi,max31343
    +
    + then:
    + properties:
    + clocks: false
    +
    + - if:
    + properties:
    + compatible:
    + contains:
    + enum:
    + - adi,max31341
    + - adi,max31342
    +
    + then:
    + properties:
    + reg:
    + items:
    + - const: 0x69
    +
    + else:
    + properties:
    + reg:
    + items:
    + - const: 0x68
    +
    +required:
    + - compatible
    + - reg
    +
    +examples:
    + - |
    + #include <dt-bindings/interrupt-controller/irq.h>
    + i2c {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + rtc@68 {
    + reg = <0x68>;
    + compatible = "adi,max31329";
    + clocks = <&clkin>;
    + interrupt-parent = <&gpio>;
    + interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
    + };
    + };
    + - |
    + #include <dt-bindings/interrupt-controller/irq.h>
    + i2c {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + rtc@68 {
    + reg = <0x68>;
    + compatible = "adi,max31331";
    + #clock-cells = <0>;
    + };
    + };
    --
    2.25.1
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