dts/bindings/clock/espressif,esp32-rtc.yaml

# Copyright (c) 2020, Mohamed ElShahawi
# SPDX-License-Identifier: Apache-2.0

description: ESP32 RTC (Power & Clock Controller Module) Module

compatible: "espressif,esp32-rtc"

include: [clock-controller.yaml, base.yaml]

properties:
  reg:
    required: true

  fast-clk-src:
    type: int
    required: true
    description: |
      RTC fast clock source.
      - 0: ESP32_RTC_FAST_CLK_SRC_XTAL_D2 - Main XTAL divided by 2 (C3/S3)
      ESP32_RTC_FAST_CLK_SRC_XTAL_D4 Main XTAL divided by 4 (ESP32/S2)
      - 1: ESP32_RTC_FAST_CLK_SRC_RC_FAST - 8 MHz
    enum:
      - 0
      - 1

  slow-clk-src:
    type: int
    required: true
    description: |
      RTC slow clock source. Default to
      - 0: ESP32_RTC_SLOW_CLK_SRC_RC_SLOW - 136 KHz (C3/S3) - 90 kHz (S2) - 150 kHz (ESP32)
      - 1: ESP32_RTC_SLOW_CLK_SRC_XTAL32K - 32,768U KHz
      - 2: ESP32_RTC_SLOW_CLK_SRC_RC_FAST_D256 - 17,5 MHz
      - 9: ESP32_RTC_SLOW_CLK_32K_EXT_OSC - External 32k oscillator connected to 32K_XP pin
    enum:
      - 0
      - 1
      - 2
      - 9

  "#clock-cells":
    const: 1

clock-cells:
  - offset  # Index of the peripheral in esp32 modules list (Check esp32_clock.h)