/*
 * Copyright 2019 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 setup clock using clock driver functions:
 *
 * 1. Call CLOCK_InitXXX() to configure corresponding SCG clock source.
 *    Note: The clock could not be set when it is being used as system clock.
 *    In default out of reset, the CPU is clocked from FIRC(IRC48M),
 *    so before setting FIRC, change to use another avaliable clock source.
 *
 * 2. Call CLOCK_SetXtal0Freq() to set XTAL0 frequency based on board settings.
 *
 * 3. Call CLOCK_SetXxxModeSysClkConfig() to set SCG mode for Xxx run mode.
 *    Wait until the system clock source is changed to target source.
 *
 * 4. If power mode change is needed, call SMC_SetPowerModeProtection() to allow
 *    corresponding power mode and SMC_SetPowerModeXxx() to change to Xxx mode.
 *    Supported run mode and clock restrictions could be found in Reference Manual.
 */

/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!GlobalInfo
product: Clocks v6.0
processor: K32L2A31xxxxA
package_id: K32L2A31VLL1A
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_smc.h"
#include "clock_config.h"

/*******************************************************************************
 * Definitions
 ******************************************************************************/
#define SCG_CLKOUTCNFG_SIRC 2U /*!< SCG CLKOUT clock select: Slow IRC */
#define SCG_SOSC_DISABLE 0U    /*!< System OSC disabled */
#define SCG_SPLL_DISABLE 0U    /*!< System PLL disabled */
#define SCG_SYS_OSC_CAP_0P 0U  /*!< Oscillator 0pF capacitor load */

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

/*******************************************************************************
 * Code
 ******************************************************************************/
/*FUNCTION**********************************************************************
 *
 * Function Name : CLOCK_CONFIG_SetScgOutSel
 * Description   : Set the SCG clock out select (CLKOUTSEL).
 * Param setting : The selected clock source.
 *
 *END**************************************************************************/
static void CLOCK_CONFIG_SetScgOutSel(uint8_t setting)
{
    SCG->CLKOUTCNFG = SCG_CLKOUTCNFG_CLKOUTSEL(setting);
}

/*FUNCTION**********************************************************************
 *
 * Function Name : CLOCK_CONFIG_FircSafeConfig
 * Description   : This function is used to safely configure FIRC clock.
 *                 In default out of reset, the CPU is clocked from FIRC(IRC48M).
 *                 Before setting FIRC, change to use SIRC as system clock,
 *                 then configure FIRC. After FIRC is set, change back to use FIRC
 *                 in case SIRC need to be configured.
 * Param fircConfig  : FIRC configuration.
 *
 *END**************************************************************************/
static void CLOCK_CONFIG_FircSafeConfig(const scg_firc_config_t *fircConfig)
{
    scg_sys_clk_config_t curConfig;
    const scg_sirc_config_t scgSircConfig       = {.enableMode = kSCG_SircEnable,
                                             .div1       = kSCG_AsyncClkDisable,
                                             .div3       = kSCG_AsyncClkDivBy2,
                                             .range      = kSCG_SircRangeHigh};
    scg_sys_clk_config_t sysClkSafeConfigSource = {
        .divSlow = kSCG_SysClkDivBy4, /* Slow clock divider */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
        .reserved1 = 0,
        .reserved2 = 0,
        .reserved3 = 0,
#endif
        .divCore = kSCG_SysClkDivBy1, /* Core clock divider */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
        .reserved4 = 0,
#endif
        .src = kSCG_SysClkSrcSirc, /* System clock source */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
        .reserved5 = 0,
#endif
    };
    /* Init Sirc. */
    CLOCK_InitSirc(&scgSircConfig);
    /* Change to use SIRC as system clock source to prepare to change FIRCCFG register. */
    CLOCK_SetRunModeSysClkConfig(&sysClkSafeConfigSource);
    /* Wait for clock source switch finished. */
    do
    {
        CLOCK_GetCurSysClkConfig(&curConfig);
    } while (curConfig.src != sysClkSafeConfigSource.src);

    /* Init Firc. */
    CLOCK_InitFirc(fircConfig);
    /* Change back to use FIRC as system clock source in order to configure SIRC if needed. */
    sysClkSafeConfigSource.src = kSCG_SysClkSrcFirc;
    CLOCK_SetRunModeSysClkConfig(&sysClkSafeConfigSource);
    /* Wait for clock source switch finished. */
    do
    {
        CLOCK_GetCurSysClkConfig(&curConfig);
    } while (curConfig.src != sysClkSafeConfigSource.src);
}

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

/*******************************************************************************
 ********************** Configuration BOARD_BootClockRUN ***********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockRUN
called_from_default_init: true
outputs:
- {id: Core_clock.outFreq, value: 48 MHz}
- {id: LPO_clock.outFreq, value: 1 kHz}
- {id: SIRC_CLK.outFreq, value: 8 MHz}
- {id: Slow_clock.outFreq, value: 24 MHz}
- {id: System_clock.outFreq, value: 48 MHz}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockRUN configuration
 ******************************************************************************/
const scg_sys_clk_config_t g_sysClkConfig_BOARD_BootClockRUN = {
    .divSlow = kSCG_SysClkDivBy2, /* Slow Clock Divider: divided by 2 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved1 = 0,
    .reserved2 = 0,
    .reserved3 = 0,
#endif
    .divCore = kSCG_SysClkDivBy1, /* Core Clock Divider: divided by 1 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved4 = 0,
#endif
    .src = kSCG_SysClkSrcFirc, /* Fast IRC is selected as System Clock Source */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved5 = 0,
#endif
};
const scg_sosc_config_t g_scgSysOscConfig_BOARD_BootClockRUN = {
    .freq        = 0U,                        /* System Oscillator frequency: 0Hz */
    .enableMode  = SCG_SOSC_DISABLE,          /* System OSC disabled */
    .monitorMode = kSCG_SysOscMonitorDisable, /* Monitor disabled */
    .div1        = kSCG_AsyncClkDisable,      /* System OSC Clock Divider 1: Clock output is disabled */
    .div3        = kSCG_AsyncClkDisable,      /* System OSC Clock Divider 3: Clock output is disabled */
    .capLoad     = SCG_SYS_OSC_CAP_0P,        /* Oscillator capacity load: 0pF */
    .workMode    = kSCG_SysOscModeExt,        /* Use external clock */
};
const scg_sirc_config_t g_scgSircConfig_BOARD_BootClockRUN = {
    .enableMode = kSCG_SircEnable | kSCG_SircEnableInLowPower, /* Enable SIRC clock, Enable SIRC in low power mode */
    .div1       = kSCG_AsyncClkDisable,                        /* Slow IRC Clock Divider 1: Clock output is disabled */
    .div3       = kSCG_AsyncClkDisable,                        /* Slow IRC Clock Divider 3: Clock output is disabled */
    .range      = kSCG_SircRangeHigh,                          /* Slow IRC high range clock (8 MHz) */
};
const scg_firc_config_t g_scgFircConfig_BOARD_BootClockRUN = {
    .enableMode = kSCG_FircEnable,      /* Enable FIRC clock */
    .div1       = kSCG_AsyncClkDisable, /* Fast IRC Clock Divider 1: Clock output is disabled */
    .div3       = kSCG_AsyncClkDisable, /* Fast IRC Clock Divider 3: Clock output is disabled */
    .range      = kSCG_FircRange48M,    /* Fast IRC is trimmed to 48MHz */
    .trimConfig = NULL,                 /* Fast IRC Trim disabled */
};
const scg_spll_config_t g_scgSysPllConfig_BOARD_BootClockRUN = {
    .enableMode  = SCG_SPLL_DISABLE,          /* System PLL disabled */
    .monitorMode = kSCG_SysPllMonitorDisable, /* Monitor disabled */
    .div1        = kSCG_AsyncClkDisable,      /* System PLL Clock Divider 1: Clock output is disabled */
    .div3        = kSCG_AsyncClkDisable,      /* System PLL Clock Divider 3: Clock output is disabled */
    .src         = kSCG_SysPllSrcSysOsc,      /* System PLL clock source is System OSC */
    .prediv      = 0,                         /* Divided by 1 */
    .mult        = 0,                         /* Multiply Factor is 16 */
};
/*******************************************************************************
 * Code for BOARD_BootClockRUN configuration
 ******************************************************************************/
void BOARD_BootClockRUN(void)
{
    scg_sys_clk_config_t curConfig;

    /* Init FIRC. */
    CLOCK_CONFIG_FircSafeConfig(&g_scgFircConfig_BOARD_BootClockRUN);
    /* Init SIRC. */
    CLOCK_InitSirc(&g_scgSircConfig_BOARD_BootClockRUN);
    /* Set SCG to FIRC mode. */
    CLOCK_SetRunModeSysClkConfig(&g_sysClkConfig_BOARD_BootClockRUN);
    /* Wait for clock source switch finished. */
    do
    {
        CLOCK_GetCurSysClkConfig(&curConfig);
    } while (curConfig.src != g_sysClkConfig_BOARD_BootClockRUN.src);
    /* Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
}

/*******************************************************************************
 ********************* Configuration BOARD_BootClockHSRUN **********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockHSRUN
outputs:
- {id: CLKOUT.outFreq, value: 8 MHz}
- {id: Core_clock.outFreq, value: 96 MHz, locked: true, accuracy: '0.001'}
- {id: FIRCDIV1_CLK.outFreq, value: 48 MHz}
- {id: FIRCDIV3_CLK.outFreq, value: 48 MHz}
- {id: LPO_clock.outFreq, value: 1 kHz}
- {id: OSC32KCLK.outFreq, value: 32.768 kHz}
- {id: PLLDIV1_CLK.outFreq, value: 96 MHz}
- {id: PLLDIV3_CLK.outFreq, value: 96 MHz}
- {id: SIRCDIV1_CLK.outFreq, value: 8 MHz}
- {id: SIRCDIV3_CLK.outFreq, value: 8 MHz}
- {id: SIRC_CLK.outFreq, value: 8 MHz}
- {id: SOSCDIV1_CLK.outFreq, value: 32.768 kHz}
- {id: SOSCDIV3_CLK.outFreq, value: 32.768 kHz}
- {id: SOSCER_CLK.outFreq, value: 32.768 kHz}
- {id: SOSC_CLK.outFreq, value: 32.768 kHz}
- {id: Slow_clock.outFreq, value: 24 MHz, locked: true, accuracy: '0.001'}
- {id: System_clock.outFreq, value: 96 MHz}
settings:
- {id: SCGMode, value: SPLL}
- {id: powerMode, value: HSRUN}
- {id: CLKOUTConfig, value: 'yes'}
- {id: SCG.DIVSLOW.scale, value: '4'}
- {id: SCG.FIRCDIV1.scale, value: '1', locked: true}
- {id: SCG.FIRCDIV3.scale, value: '1', locked: true}
- {id: SCG.PREDIV.scale, value: '4'}
- {id: SCG.SCSSEL.sel, value: SCG.SPLL_DIV2_CLK}
- {id: SCG.SIRCDIV1.scale, value: '1', locked: true}
- {id: SCG.SIRCDIV3.scale, value: '1', locked: true}
- {id: SCG.SOSCDIV1.scale, value: '1', locked: true}
- {id: SCG.SOSCDIV3.scale, value: '1', locked: true}
- {id: SCG.SPLLDIV1.scale, value: '1', locked: true}
- {id: SCG.SPLLDIV3.scale, value: '1', locked: true}
- {id: SCG.SPLLSRCSEL.sel, value: SCG.FIRC}
- {id: SCG_SOSCCFG_OSC_MODE_CFG, value: ModeOscLowPower}
- {id: SCG_SOSCCSR_SOSCEN_CFG, value: Enabled}
- {id: SCG_SOSCCSR_SOSCERCLKEN_CFG, value: Enabled}
- {id: SCG_SPLLCSR_SPLLEN_CFG, value: Enabled}
sources:
- {id: SCG.SOSC.outFreq, value: 32.768 kHz, enabled: true}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockHSRUN configuration
 ******************************************************************************/
const scg_sys_clk_config_t g_sysClkConfig_BOARD_BootClockHSRUN = {
    .divSlow = kSCG_SysClkDivBy4, /* Slow Clock Divider: divided by 4 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved1 = 0,
    .reserved2 = 0,
    .reserved3 = 0,
#endif
    .divCore = kSCG_SysClkDivBy1, /* Core Clock Divider: divided by 1 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved4 = 0,
#endif
    .src = kSCG_SysClkSrcSysPll, /* System PLL is selected as System Clock Source */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved5 = 0,
#endif
};
const scg_sosc_config_t g_scgSysOscConfig_BOARD_BootClockHSRUN = {
    .freq        = 32768U,                                     /* System Oscillator frequency: 32768Hz */
    .enableMode  = kSCG_SysOscEnable | kSCG_SysOscEnableErClk, /* Enable System OSC clock, Enable OSCERCLK */
    .monitorMode = kSCG_SysOscMonitorDisable,                  /* Monitor disabled */
    .div1        = kSCG_AsyncClkDivBy1,                        /* System OSC Clock Divider 1: divided by 1 */
    .div3        = kSCG_AsyncClkDivBy1,                        /* System OSC Clock Divider 3: divided by 1 */
    .capLoad     = SCG_SYS_OSC_CAP_0P,                         /* Oscillator capacity load: 0pF */
    .workMode    = kSCG_SysOscModeOscLowPower,                 /* Oscillator low power */
};
const scg_sirc_config_t g_scgSircConfig_BOARD_BootClockHSRUN = {
    .enableMode = kSCG_SircEnable | kSCG_SircEnableInLowPower, /* Enable SIRC clock, Enable SIRC in low power mode */
    .div1       = kSCG_AsyncClkDivBy1,                         /* Slow IRC Clock Divider 1: divided by 1 */
    .div3       = kSCG_AsyncClkDivBy1,                         /* Slow IRC Clock Divider 3: divided by 1 */
    .range      = kSCG_SircRangeHigh,                          /* Slow IRC high range clock (8 MHz) */
};
const scg_firc_config_t g_scgFircConfig_BOARD_BootClockHSRUN = {
    .enableMode = kSCG_FircEnable,     /* Enable FIRC clock */
    .div1       = kSCG_AsyncClkDivBy1, /* Fast IRC Clock Divider 1: divided by 1 */
    .div3       = kSCG_AsyncClkDivBy1, /* Fast IRC Clock Divider 3: divided by 1 */
    .range      = kSCG_FircRange48M,   /* Fast IRC is trimmed to 48MHz */
    .trimConfig = NULL,                /* Fast IRC Trim disabled */
};
const scg_spll_config_t g_scgSysPllConfig_BOARD_BootClockHSRUN = {
    .enableMode  = kSCG_SysPllEnable,         /* Enable SPLL clock */
    .monitorMode = kSCG_SysPllMonitorDisable, /* Monitor disabled */
    .div1        = kSCG_AsyncClkDivBy1,       /* System PLL Clock Divider 1: divided by 1 */
    .div3        = kSCG_AsyncClkDivBy1,       /* System PLL Clock Divider 3: divided by 1 */
    .src         = kSCG_SysPllSrcFirc,        /* System PLL clock source is Fast IRC */
    .prediv      = 3,                         /* Divided by 4 */
    .mult        = 0,                         /* Multiply Factor is 16 */
};
/*******************************************************************************
 * Code for BOARD_BootClockHSRUN configuration
 ******************************************************************************/
void BOARD_BootClockHSRUN(void)
{
    scg_sys_clk_config_t curConfig;

    /* Init SOSC according to board configuration. */
    CLOCK_InitSysOsc(&g_scgSysOscConfig_BOARD_BootClockHSRUN);
    /* Set the XTAL0 frequency based on board settings. */
    CLOCK_SetXtal0Freq(g_scgSysOscConfig_BOARD_BootClockHSRUN.freq);
    /* Init FIRC. */
    CLOCK_CONFIG_FircSafeConfig(&g_scgFircConfig_BOARD_BootClockHSRUN);
    /* Init SIRC. */
    CLOCK_InitSirc(&g_scgSircConfig_BOARD_BootClockHSRUN);
    /* Init SysPll. */
    CLOCK_InitSysPll(&g_scgSysPllConfig_BOARD_BootClockHSRUN);
    /* Set HSRUN power mode. */
    SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
    SMC_SetPowerModeHsrun(SMC);
    while (SMC_GetPowerModeState(SMC) != kSMC_PowerStateHsrun)
    {
    }

    /* Set SCG to SPLL mode. */
    CLOCK_SetHsrunModeSysClkConfig(&g_sysClkConfig_BOARD_BootClockHSRUN);
    /* Wait for clock source switch finished. */
    do
    {
        CLOCK_GetCurSysClkConfig(&curConfig);
    } while (curConfig.src != g_sysClkConfig_BOARD_BootClockHSRUN.src);
    /* Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKHSRUN_CORE_CLOCK;
    /* Set SCG CLKOUT selection. */
    CLOCK_CONFIG_SetScgOutSel(SCG_CLKOUTCNFG_SIRC);
}

/*******************************************************************************
 ********************* Configuration BOARD_BootClockVLPR ***********************
 ******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockVLPR
outputs:
- {id: Core_clock.outFreq, value: 8 MHz, locked: true, accuracy: '0.001'}
- {id: LPO_clock.outFreq, value: 1 kHz}
- {id: SIRC_CLK.outFreq, value: 8 MHz}
- {id: Slow_clock.outFreq, value: 1 MHz, locked: true, accuracy: '0.001'}
- {id: System_clock.outFreq, value: 8 MHz}
settings:
- {id: SCGMode, value: SIRC}
- {id: powerMode, value: VLPR}
- {id: SCG.DIVSLOW.scale, value: '8'}
- {id: SCG.SCSSEL.sel, value: SCG.SIRC}
- {id: SCG_FIRCCSR_FIRCLPEN_CFG, value: Enabled}
sources:
- {id: SCG.SOSC.outFreq, value: 32.768 kHz, enabled: true}
 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */

/*******************************************************************************
 * Variables for BOARD_BootClockVLPR configuration
 ******************************************************************************/
const scg_sys_clk_config_t g_sysClkConfig_BOARD_BootClockVLPR = {
    .divSlow = kSCG_SysClkDivBy8, /* Slow Clock Divider: divided by 8 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved1 = 0,
    .reserved2 = 0,
    .reserved3 = 0,
#endif
    .divCore = kSCG_SysClkDivBy1, /* Core Clock Divider: divided by 1 */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved4 = 0,
#endif
    .src = kSCG_SysClkSrcSirc, /* Slow IRC is selected as System Clock Source */
#if FSL_CLOCK_DRIVER_VERSION < MAKE_VERSION(2, 1, 1)
    .reserved5 = 0,
#endif
};
const scg_sosc_config_t g_scgSysOscConfig_BOARD_BootClockVLPR = {
    .freq        = 0U,                        /* System Oscillator frequency: 0Hz */
    .enableMode  = SCG_SOSC_DISABLE,          /* System OSC disabled */
    .monitorMode = kSCG_SysOscMonitorDisable, /* Monitor disabled */
    .div1        = kSCG_AsyncClkDisable,      /* System OSC Clock Divider 1: Clock output is disabled */
    .div3        = kSCG_AsyncClkDisable,      /* System OSC Clock Divider 3: Clock output is disabled */
    .capLoad     = SCG_SYS_OSC_CAP_0P,        /* Oscillator capacity load: 0pF */
    .workMode    = kSCG_SysOscModeExt,        /* Use external clock */
};
const scg_sirc_config_t g_scgSircConfig_BOARD_BootClockVLPR = {
    .enableMode = kSCG_SircEnable | kSCG_SircEnableInLowPower, /* Enable SIRC clock, Enable SIRC in low power mode */
    .div1       = kSCG_AsyncClkDisable,                        /* Slow IRC Clock Divider 1: Clock output is disabled */
    .div3       = kSCG_AsyncClkDisable,                        /* Slow IRC Clock Divider 3: Clock output is disabled */
    .range      = kSCG_SircRangeHigh,                          /* Slow IRC high range clock (8 MHz) */
};
const scg_firc_config_t g_scgFircConfig_BOARD_BootClockVLPR = {
    .enableMode = kSCG_FircEnable | kSCG_FircEnableInLowPower, /* Enable FIRC clock, Enable FIRC in low power mode */
    .div1       = kSCG_AsyncClkDisable,                        /* Fast IRC Clock Divider 1: Clock output is disabled */
    .div3       = kSCG_AsyncClkDisable,                        /* Fast IRC Clock Divider 3: Clock output is disabled */
    .range      = kSCG_FircRange48M,                           /* Fast IRC is trimmed to 48MHz */
    .trimConfig = NULL,                                        /* Fast IRC Trim disabled */
};
const scg_spll_config_t g_scgSysPllConfig_BOARD_BootClockVLPR = {
    .enableMode  = SCG_SPLL_DISABLE,          /* System PLL disabled */
    .monitorMode = kSCG_SysPllMonitorDisable, /* Monitor disabled */
    .div1        = kSCG_AsyncClkDisable,      /* System PLL Clock Divider 1: Clock output is disabled */
    .div3        = kSCG_AsyncClkDisable,      /* System PLL Clock Divider 3: Clock output is disabled */
    .src         = kSCG_SysPllSrcSysOsc,      /* System PLL clock source is System OSC */
    .prediv      = 0,                         /* Divided by 1 */
    .mult        = 0,                         /* Multiply Factor is 16 */
};
/*******************************************************************************
 * Code for BOARD_BootClockVLPR configuration
 ******************************************************************************/
void BOARD_BootClockVLPR(void)
{
    /* Init FIRC. */
    CLOCK_CONFIG_FircSafeConfig(&g_scgFircConfig_BOARD_BootClockVLPR);
    /* Init SIRC. */
    CLOCK_InitSirc(&g_scgSircConfig_BOARD_BootClockVLPR);
    /* Allow SMC all power modes. */
    SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
    /* Set VLPR power mode. */
    SMC_SetPowerModeVlpr(SMC);
    while (SMC_GetPowerModeState(SMC) != kSMC_PowerStateVlpr)
    {
    }
    /* Set SystemCoreClock variable. */
    SystemCoreClock = BOARD_BOOTCLOCKVLPR_CORE_CLOCK;
}