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49 lines
977 B
C
49 lines
977 B
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include "sdkconfig.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @file esp_clk_internal.h
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*
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* Private clock-related functions
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*/
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/**
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* @brief Initialize clock-related settings
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*
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* Called from cpu_start.c, not intended to be called from other places.
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* This function configures the CPU clock, RTC slow and fast clocks, and
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* performs RTC slow clock calibration.
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*/
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void esp_clk_init(void);
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/**
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* @brief Disables clock of some peripherals
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*
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* Called from cpu_start.c, not intended to be called from other places.
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* This function disables clock of useless peripherals when cpu starts.
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*/
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void esp_perip_clk_init(void);
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#if !CONFIG_IDF_TARGET_ESP32C2
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/* Selects an external clock source (32 kHz) for RTC.
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* Only internal use in unit test.
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*/
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void rtc_clk_select_rtc_slow_clk(void);
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#endif
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#ifdef __cplusplus
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}
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#endif
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