dts/bindings/cpu/espressif,xtensa-lx7.yaml

# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
# SPDX-License-Identifier: Apache-2.0

description: Espressif Xtensa CPU

compatible: "espressif,xtensa-lx7"

include: cdns,tensilica-xtensa-lx7.yaml

properties:
  clock-source:
    type: int
    required: true
    description: |
      Defines the CPU clock source, each corresponding to different frequencies:
      - 0: ESP32_CPU_CLK_SRC_XTAL - Uses the external crystal clock typically at 40 MHz.
      - 1: ESP32_CPU_CLK_SRC_PLL - Utilizes an internal PLL which operates at either
      320 MHz or 480 MHz.
      - 2: ESP32_CPU_CLK_SRC_RC_FAST - Employs an internal fast RC oscillator with
      frequency of 17.5 MHz. 8 MHz for ESP32S2.
      - 3: APLL_CLK - 16 Mhz ~ 128 MHz (ESP32S2 Only)
    enum:
      - 0
      - 1
      - 2
      - 3

  xtal-freq:
    type: int
    required: true
    description: Value of the external XTAL connected to ESP32.
    enum:
      - 40000000
      - 32000000