| # Copyright (c) 2024 Nordic Semiconductor ASA |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: Nordic nRF high-frequency crystal oscillator (nRF53 series) |
| |
| compatible: "nordic,nrf53-hfxo" |
| |
| include: fixed-clock.yaml |
| |
| properties: |
| clock-frequency: |
| const: 32000000 |
| |
| startup-time-us: |
| type: int |
| required: true |
| description: | |
| Startup time in microseconds. |
| |
| The value can be obtained by first measuring the time between |
| TASKS_HFCLKSTART and EVENTS_HFCLKSTARTED. Then multiply |
| the value by 2 to account for temperature and supply variations. |
| |
| Note that the startup time will be longer usual on the first |
| power-up and as such should not be used to determine |
| startup-time-us. |
| |
| load-capacitors: |
| type: string |
| enum: |
| - "internal" |
| - "external" |
| description: | |
| Type of load capacitors connected to the crystal. |
| |
| load-capacitance-femtofarad: |
| type: int |
| enum: |
| - 7000 |
| - 7500 |
| - 8000 |
| - 8500 |
| - 9000 |
| - 9500 |
| - 10000 |
| - 10500 |
| - 11000 |
| - 11500 |
| - 12000 |
| - 12500 |
| - 13000 |
| - 13500 |
| - 14000 |
| - 14500 |
| - 15000 |
| - 15500 |
| - 16000 |
| - 16500 |
| - 17000 |
| - 17500 |
| - 18000 |
| - 18500 |
| - 19000 |
| - 19500 |
| - 20000 |
| description: | |
| Load capacitance in femtofarads. This property is only used when |
| load-capacitors is set to "internal". |
