Documentation/devicetree/bindings/rtc/adi,max31335.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/rtc/adi,max31335.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Analog Devices MAX31335 RTC
   8
   9 maintainers:
  10   - Antoniu Miclaus <antoniu.miclaus@analog.com>
  11
  12 description:
  13   Analog Devices MAX31335 I2C RTC ±2ppm Automotive Real-Time Clock with
  14   Integrated MEMS Resonator.
  15
  16 allOf:
  17   - $ref: rtc.yaml#
  18
  19 properties:
  20   compatible:
  21     const: adi,max31335
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     maxItems: 1
  28
  29   "#clock-cells":
  30     description:
  31       RTC can be used as a clock source through its clock output pin.
  32     const: 0
  33
  34   adi,tc-diode:
  35     description:
  36       Select the diode configuration for the trickle charger.
  37       schottky - Schottky diode in series.
  38       standard+schottky - standard diode + Schottky diode in series.
  39     enum: [schottky, standard+schottky]
  40
  41   trickle-resistor-ohms:
  42     description:
  43       Selected resistor for trickle charger. Should be specified if trickle
  44       charger should be enabled.
  45     enum: [3000, 6000, 11000]
  46
  47 required:
  48   - compatible
  49   - reg
  50
  51 unevaluatedProperties: false
  52
  53 examples:
  54   - |
  55     #include <dt-bindings/interrupt-controller/irq.h>
  56     i2c {
  57         #address-cells = <1>;
  58         #size-cells = <0>;
  59
  60         rtc@68 {
  61             compatible = "adi,max31335";
  62             reg = <0x68>;
  63             pinctrl-0 = <&rtc_nint_pins>;
  64             interrupts-extended = <&gpio1 16 IRQ_TYPE_LEVEL_HIGH>;
  65             aux-voltage-chargeable = <1>;
  66             trickle-resistor-ohms = <6000>;
  67             adi,tc-diode = "schottky";
  68         };
  69     };
  70 ...