clock_config.c

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/*
 * Copyright 2017-2018 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/***********************************************************************************************************************
 * This file was generated by the MCUXpresso Config Tools. Any manual edits made to this file
 * will be overwritten if the respective MCUXpresso Config Tools is used to update this file.
 **********************************************************************************************************************/
/*
 * How to set up clock using clock driver functions:
 *
 * 1. Setup clock sources.
 *
 * 2. Set up wait states of the flash.
 *
 * 3. Set up all dividers.
 *
 * 4. Set up all selectors to provide selected clocks.
 */

/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!GlobalInfo
product: Clocks v4.1
processor: LPC55S69
package_id: LPC55S69JBD100
mcu_data: ksdk2_0
processor_version: 0.0.0
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

#include "fsl_power.h"
#include "fsl_clock.h"
#include "clock_config.h"

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*******************************************************************************
 * Variables
 ******************************************************************************/
/* System clock frequency. */
extern uint32_t SystemCoreClock;

/*******************************************************************************
 ************************ BOARD_InitBootClocks function ************************
 ******************************************************************************/
void BOARD_InitBootClocks(void)
{
    BOARD_BootClockFROHF96M();
}

/*******************************************************************************
 ******************** Configuration BOARD_BootClockFRO12M **********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockFRO12M
outputs:
- {id: System_clock.outFreq, value: 12 MHz}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockFRO12M configuration
 ******************************************************************************/
/*******************************************************************************
 * Code for BOARD_BootClockFRO12M configuration
 ******************************************************************************/
void BOARD_BootClockFRO12M(void)
{
#ifndef SDK_SECONDARY_CORE
    /*!< Set up the clock sources */
    /*!< Configure FRO192M */
    POWER_DisablePD(kPDRUNCFG_PD_FRO192M);               /*!< Ensure FRO is on  */
    CLOCK_SetupFROClocking(12000000U);                   /*!< Set up FRO to the 12 MHz, just for sure */
    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);                /*!< Switch to FRO 12MHz first to ensure we can change the clock setting */

    CLOCK_SetupFROClocking(96000000U);                   /* Enable FRO HF(96MHz) output */

    CLOCK_SetFLASHAccessCyclesForFreq(12000000U);          /*!< Set FLASH wait states for core */

    /*!< Set up dividers */
    CLOCK_SetClkDiv(kCLOCK_DivAhbClk, 1U, false);         /*!< Set AHBCLKDIV divider to value 1 */

    /*!< Set up clock selectors - Attach clocks to the peripheries */
    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);                 /*!< Switch MAIN_CLK to FRO12M */

    /*< Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKFRO12M_CORE_CLOCK;
#endif
}

/*******************************************************************************
 ******************* Configuration BOARD_BootClockFROHF96M *********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockFROHF96M
called_from_default_init: true
outputs:
- {id: System_clock.outFreq, value: 96 MHz}
settings:
- {id: SYSCON.MAINCLKSELA.sel, value: ANACTRL.fro_hf_clk}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockFROHF96M configuration
 ******************************************************************************/
/*******************************************************************************
 * Code for BOARD_BootClockFROHF96M configuration
 ******************************************************************************/
void BOARD_BootClockFROHF96M(void)
{
#ifndef SDK_SECONDARY_CORE
    /*!< Set up the clock sources */
    /*!< Configure FRO192M */
    POWER_DisablePD(kPDRUNCFG_PD_FRO192M);               /*!< Ensure FRO is on  */
    CLOCK_SetupFROClocking(12000000U);                   /*!< Set up FRO to the 12 MHz, just for sure */
    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);                /*!< Switch to FRO 12MHz first to ensure we can change the clock setting */

    CLOCK_SetupFROClocking(96000000U);                   /* Enable FRO HF(96MHz) output */

    CLOCK_SetFLASHAccessCyclesForFreq(96000000U);          /*!< Set FLASH wait states for core */

    /*!< Set up dividers */
    CLOCK_SetClkDiv(kCLOCK_DivAhbClk, 1U, false);         /*!< Set AHBCLKDIV divider to value 1 */

    /*!< Set up clock selectors - Attach clocks to the peripheries */
    CLOCK_AttachClk(kFRO_HF_to_MAIN_CLK);                 /*!< Switch MAIN_CLK to FRO_HF */

    /*< Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKFROHF96M_CORE_CLOCK;
#endif
}

/*******************************************************************************
 ******************** Configuration BOARD_BootClockPLL100M *********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockPLL100M
outputs:
- {id: System_clock.outFreq, value: 100 MHz}
settings:
- {id: PLL0_Mode, value: Normal}
- {id: ENABLE_CLKIN_ENA, value: Enabled}
- {id: ENABLE_SYSTEM_CLK_OUT, value: Enabled}
- {id: SYSCON.MAINCLKSELB.sel, value: SYSCON.PLL0_BYPASS}
- {id: SYSCON.PLL0CLKSEL.sel, value: SYSCON.CLK_IN_EN}
- {id: SYSCON.PLL0M_MULT.scale, value: '100', locked: true}
- {id: SYSCON.PLL0N_DIV.scale, value: '4', locked: true}
- {id: SYSCON.PLL0_PDEC.scale, value: '4', locked: true}
- {id: 'SYSCON::PLL0SSCG0[MD_LBS].bitField', value: BitFieldValue}
sources:
- {id: SYSCON.XTAL32M.outFreq, value: 16 MHz, enabled: true}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockPLL100M configuration
 ******************************************************************************/
/*******************************************************************************
 * Code for BOARD_BootClockPLL100M configuration
 ******************************************************************************/
void BOARD_BootClockPLL100M(void)
{
#ifndef SDK_SECONDARY_CORE
    /*!< Set up the clock sources */
    /*!< Configure FRO192M */
    POWER_DisablePD(kPDRUNCFG_PD_FRO192M);               /*!< Ensure FRO is on  */
    CLOCK_SetupFROClocking(12000000U);                   /*!< Set up FRO to the 12 MHz, just for sure */
    CLOCK_AttachClk(kFRO12M_to_MAIN_CLK);                /*!< Switch to FRO 12MHz first to ensure we can change the clock setting */

    CLOCK_SetupFROClocking(96000000U);                   /* Enable FRO HF(96MHz) output */

    POWER_DisablePD(kPDRUNCFG_PD_XTAL32M);                        /* Ensure XTAL32M is powered */
    POWER_DisablePD(kPDRUNCFG_PD_LDOXO32M);                       /* Ensure XTAL32M is powered */
    CLOCK_SetupExtClocking(16000000U);                            /* Enable clk_in clock */
    SYSCON->CLOCK_CTRL |= SYSCON_CLOCK_CTRL_CLKIN_ENA_MASK;       /* Enable clk_in from XTAL32M clock  */
    ANACTRL->XO32M_CTRL |= ANACTRL_XO32M_CTRL_ENABLE_SYSTEM_CLK_OUT_MASK;    /* Enable clk_in to system  */

    CLOCK_SetFLASHAccessCyclesForFreq(100000000U);          /*!< Set FLASH wait states for core */

    /*!< Set up PLL */
    CLOCK_AttachClk(kEXT_CLK_to_PLL0);                    /*!< Switch PLL0CLKSEL to EXT_CLK */
    POWER_DisablePD(kPDRUNCFG_PD_PLL0);                  /* Ensure PLL is on  */
    POWER_DisablePD(kPDRUNCFG_PD_PLL0_SSCG);                                       
    const pll_setup_t pll0Setup = {
        .pllctrl = SYSCON_PLL0CTRL_CLKEN_MASK | SYSCON_PLL0CTRL_SELI(54U) | SYSCON_PLL0CTRL_SELP(26U),
        .pllndec = SYSCON_PLL0NDEC_NDIV(4U),
        .pllpdec = SYSCON_PLL0PDEC_PDIV(2U),
        .pllsscg = {0x0U,(SYSCON_PLL0SSCG1_MDIV_EXT(100U) | SYSCON_PLL0SSCG1_SEL_EXT_MASK)},
        .pllRate = 100000000U,
        .flags =  PLL_SETUPFLAG_WAITLOCK
    };
    CLOCK_SetPLL0Freq(&pll0Setup);                       /*!< Configure PLL0 to the desired values */

    /*!< Set up dividers */
    CLOCK_SetClkDiv(kCLOCK_DivAhbClk, 1U, false);         /*!< Set AHBCLKDIV divider to value 1 */

    /*!< Set up clock selectors - Attach clocks to the peripheries */
    CLOCK_AttachClk(kPLL0_to_MAIN_CLK);                 /*!< Switch MAIN_CLK to PLL0 */

    /*< Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKPLL100M_CORE_CLOCK;
#endif
}