| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/rtc/rtc.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Real Time Clock Common Properties |
| 8 | |
| 9 | maintainers: |
| 10 | - Alexandre Belloni <alexandre.belloni@bootlin.com> |
| 11 | |
| 12 | description: | |
| 13 | This document describes generic bindings which can be used to |
| 14 | describe Real Time Clock devices in a device tree. |
| 15 | |
| 16 | properties: |
| 17 | $nodename: |
| 18 | pattern: "^rtc(@.*|-([0-9]|[1-9][0-9]+))?$" |
| 19 | |
| 20 | aux-voltage-chargeable: |
| 21 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 22 | enum: [0, 1] |
| 23 | description: | |
| 24 | Tells whether the battery/supercap of the RTC (if any) is |
| 25 | chargeable or not: |
| 26 | 0: not chargeable |
| 27 | 1: chargeable |
| 28 | |
| 29 | quartz-load-femtofarads: |
| 30 | description: |
| 31 | The capacitive load of the quartz(x-tal), expressed in femto |
| 32 | Farad (fF). The default value shall be listed (if optional), |
| 33 | and likewise all valid values. |
| 34 | |
| 35 | start-year: |
| 36 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | description: |
| 38 | If provided, the default hardware range supported by the RTC is |
| 39 | shifted so the first usable year is the specified one. |
| 40 | |
| 41 | trickle-diode-disable: |
| 42 | $ref: /schemas/types.yaml#/definitions/flag |
| 43 | description: |
| 44 | Do not use internal trickle charger diode. Should be given if |
| 45 | internal trickle charger diode should be disabled. |
| 46 | deprecated: true |
| 47 | |
| 48 | trickle-resistor-ohms: |
| 49 | description: |
| 50 | Selected resistor for trickle charger. Should be given |
| 51 | if trickle charger should be enabled. |
| 52 | |
| 53 | trickle-voltage-millivolt: |
| 54 | description: |
| 55 | Selected voltage for trickle charger. Should be given |
| 56 | if trickle charger should be enabled and the trickle voltage is different |
| 57 | from the RTC main power supply. |
| 58 | |
| 59 | wakeup-source: |
| 60 | $ref: /schemas/types.yaml#/definitions/flag |
| 61 | description: |
| 62 | Enables wake up of host system on alarm. |
| 63 | |
| 64 | reset-source: |
| 65 | $ref: /schemas/types.yaml#/definitions/flag |
| 66 | description: |
| 67 | The RTC is able to reset the machine. |
| 68 | |
| 69 | additionalProperties: true |
| 70 | |
| 71 | ... |