/* * Copyright 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 setup clock using clock driver functions: * * 1. CLOCK_SetSimSafeDivs, to make sure core clock, bus clock, flexbus clock * and flash clock are in allowed range during clock mode switch. * * 2. Call CLOCK_Osc0Init to setup OSC clock, if it is used in target mode. * * 3. Set MCG configuration, MCG includes three parts: FLL clock, PLL clock and * internal reference clock(MCGIRCLK). Follow the steps to setup: * * 1). Call CLOCK_BootToXxxMode to set MCG to target mode. * * 2). If target mode is FBI/BLPI/PBI mode, the MCGIRCLK has been configured * correctly. For other modes, need to call CLOCK_SetInternalRefClkConfig * explicitly to setup MCGIRCLK. * * 3). Don't need to configure FLL explicitly, because if target mode is FLL * mode, then FLL has been configured by the function CLOCK_BootToXxxMode, * if the target mode is not FLL mode, the FLL is disabled. * * 4). If target mode is PEE/PBE/PEI/PBI mode, then the related PLL has been * setup by CLOCK_BootToXxxMode. In FBE/FBI/FEE/FBE mode, the PLL could * be enabled independently, call CLOCK_EnablePll0 explicitly in this case. * * 4. Call CLOCK_SetSimConfig to set the clock configuration in SIM. */ /* clang-format off */ /* TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* !!GlobalInfo product: Clocks v4.1 processor: MK66FN2M0xxx18 package_id: MK66FN2M0VMD18 mcu_data: ksdk2_0 processor_version: 4.0.0 board: FRDM-K66F * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/ /* clang-format on */ #include "fsl_smc.h" #include "fsl_rtc.h" #include "clock_config.h" /******************************************************************************* * Definitions ******************************************************************************/ #define MCG_IRCLK_DISABLE 0U /*!< MCGIRCLK disabled */ #define MCG_PLL_DISABLE 0U /*!< MCGPLLCLK disabled */ #define OSC_CAP0P 0U /*!< Oscillator 0pF capacitor load */ #define OSC_ER_CLK_DISABLE 0U /*!< Disable external reference clock */ #define RTC_OSC_CAP_LOAD_0PF 0x0U /*!< RTC oscillator capacity load: 0pF */ #define RTC_RTC32KCLK_PERIPHERALS_ENABLED 1U /*!< RTC32KCLK to other peripherals: enabled */ #define SIM_CLKOUT_SEL_FLEXBUS_CLK 0U /*!< CLKOUT pin clock select: FlexBus clock */ #define SIM_ENET_1588T_CLK_SEL_CORE_SYSTEM_CLK 0U /*!< SDHC clock select: Core/system clock */ #define SIM_ENET_RMII_CLK_SEL_CLKIN_CLK 1U /*!< SDHC clock select: CLKIN (External bypass clock) */ #define SIM_LPUART_CLK_SEL_OSCERCLK_CLK 2U /*!< LPUART clock select: OSCERCLK clock */ #define SIM_OSC32KSEL_OSC32KCLK_CLK 0U /*!< OSC32KSEL select: OSC32KCLK clock */ #define SIM_OSC32KSEL_RTC32KCLK_CLK 2U /*!< OSC32KSEL select: RTC32KCLK clock (32.768kHz) */ #define SIM_PLLFLLSEL_IRC48MCLK_CLK 3U /*!< PLLFLL select: IRC48MCLK clock */ #define SIM_PLLFLLSEL_MCGFLLCLK_CLK 0U /*!< PLLFLL select: MCGFLLCLK clock */ #define SIM_RTC_CLKOUT_SEL_RTC1HZCLK_CLK 0U /*!< RTC clock output select: RTC1HzCLK clock */ #define SIM_SDHC_CLK_SEL_OSCERCLK_CLK 2U /*!< SDHC clock select: OSCERCLK clock */ #define SIM_TPM_CLK_SEL_PLLFLLSEL_CLK 1U /*!< TPM clock select: PLLFLLSEL output clock */ #define SIM_TRACE_CLK_DIV_2 1U /*!< Trace clock divider divisor: divided by 2 */ #define SIM_TRACE_CLK_FRAC_1 0U /*!< Trace clock divider fraction: multiplied by 1 */ #define SIM_TRACE_CLK_SEL_MCGOUTCLK_CLK 0U /*!< Trace clock select: FlexBus clock */ #define SIM_USB_CLK_48000000HZ 48000000U /*!< Input SIM frequency for USB: 48000000Hz */ #define SIM_USB_SLOW_CLK_SEL_MCGIRCLK_CLK 0U /*!< USB slow clock select: MCGIRCLK clock */ #define USBPHY_PFD_CLK_SEL_PFD_CLK_DIV_2 2U /*!< PFD clock select: pfd_clk clock divided by 2 */ #define USBPHY_PFD_FRAC_DIV_24 24U /*!< PFD fractional divider: divided by 24 */ /******************************************************************************* * Variables ******************************************************************************/ /* System clock frequency. */ extern uint32_t SystemCoreClock; /******************************************************************************* * Code ******************************************************************************/ /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_SetRtcClock * Description : This function is used to configuring RTC clock including * enabling RTC oscillator. * Param capLoad : RTC oscillator capacity load * Param enableOutPeriph : Enable (1U)/Disable (0U) clock to peripherals * *END**************************************************************************/ static void CLOCK_CONFIG_SetRtcClock(uint32_t capLoad, uint8_t enableOutPeriph) { /* RTC clock gate enable */ CLOCK_EnableClock(kCLOCK_Rtc0); if ((RTC->CR & RTC_CR_OSCE_MASK) == 0u) { /* Only if the Rtc oscillator is not already enabled */ /* Set the specified capacitor configuration for the RTC oscillator */ RTC_SetOscCapLoad(RTC, capLoad); /* Enable the RTC 32KHz oscillator */ RTC->CR |= RTC_CR_OSCE_MASK; } /* Output to other peripherals */ if (enableOutPeriph) { RTC->CR &= ~RTC_CR_CLKO_MASK; } else { RTC->CR |= RTC_CR_CLKO_MASK; } /* Set the XTAL32/RTC_CLKIN frequency based on board setting. */ CLOCK_SetXtal32Freq(BOARD_XTAL32K_CLK_HZ); /* Set RTC_TSR if there is fault value in RTC */ if (RTC->SR & RTC_SR_TIF_MASK) { RTC->TSR = RTC->TSR; } /* RTC clock gate disable */ CLOCK_DisableClock(kCLOCK_Rtc0); } /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_EnableUsbhs0PhyPllClock * Description : This function enables the internal 480MHz USB PHY PLL clock. * Param src : USB HS PHY PLL clock source. * Param freq : The frequency specified by src. * *END**************************************************************************/ static void CLOCK_CONFIG_EnableUsbhs0PhyPllClock(uint32_t freq) { volatile uint32_t i; uint32_t phyPllDiv = 0U; if (24000000U == freq) { phyPllDiv = USBPHY_PLL_SIC_PLL_DIV_SEL(0U); } else if (16000000U == freq) { phyPllDiv = USBPHY_PLL_SIC_PLL_DIV_SEL(1U); } else if (12000000U == freq) { phyPllDiv = USBPHY_PLL_SIC_PLL_DIV_SEL(2U); } SIM->SCGC3 |= SIM_SCGC3_USBHSPHY_MASK; SIM->SOPT2 |= SIM_SOPT2_USBREGEN_MASK; i = 500000U; while (i--) { __NOP(); } USBPHY->TRIM_OVERRIDE_EN = 0x01U; /* Override the trim. */ USBPHY->CTRL &= ~USBPHY_CTRL_SFTRST_MASK; /* release PHY from reset */ USBPHY->PLL_SIC |= USBPHY_PLL_SIC_PLL_POWER_MASK; /* power up PLL */ USBPHY->PLL_SIC = (USBPHY->PLL_SIC & ~USBPHY_PLL_SIC_PLL_DIV_SEL_MASK) | phyPllDiv; USBPHY->PLL_SIC &= ~USBPHY_PLL_SIC_PLL_BYPASS_MASK; /* Clear bypass bit */ USBPHY->CTRL &= ~USBPHY_CTRL_CLKGATE_MASK; /* Clear to 0U to run clocks */ /* Wait for lock. */ while (!(USBPHY->PLL_SIC & USBPHY_PLL_SIC_PLL_LOCK_MASK)) { } } /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_EnableUsbhs0PfdClock * Description : This function enables USB HS PFD clock. * Param frac : The value set to PFD_FRAC, it must be in the range of 18 to 35. * Param src : Source of the USB HS PFD clock (USB1PFDCLK). * *END**************************************************************************/ static void CLOCK_CONFIG_EnableUsbhs0PfdClock(uint8_t frac, uint8_t src) { uint32_t fracFreq = (480000U * 18U / frac) * 1000U; USBPHY->ANACTRL = (USBPHY->ANACTRL & ~(USBPHY_ANACTRL_PFD_FRAC_MASK | USBPHY_ANACTRL_PFD_CLK_SEL_MASK)) | (USBPHY_ANACTRL_PFD_FRAC(frac) | USBPHY_ANACTRL_PFD_CLK_SEL(src)); USBPHY->ANACTRL &= ~USBPHY_ANACTRL_PFD_CLKGATE_MASK; while (!(USBPHY->ANACTRL & USBPHY_ANACTRL_PFD_STABLE_MASK)) { } if (0U == src) { CLOCK_SetExtPllFreq(g_xtal0Freq); } else if (1U == src) { CLOCK_SetExtPllFreq(fracFreq / 4U); } else if (2U == src) { CLOCK_SetExtPllFreq(fracFreq / 2U); } else { CLOCK_SetExtPllFreq(fracFreq); } } /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_SetUsbSlowClock * Description : Set USB slow clock source. * Param src : The value to set USB slow clock source. * *END**************************************************************************/ static void CLOCK_CONFIG_SetUsbSlowClock(uint8_t src) { SIM->SOPT2 = ((SIM->SOPT2 & ~SIM_SOPT2_USBSLSRC_MASK) | SIM_SOPT2_USBSLSRC(src)); } /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_SetFllExtRefDiv * Description : Configure FLL external reference divider (FRDIV). * Param frdiv : The value to set FRDIV. * *END**************************************************************************/ static void CLOCK_CONFIG_SetFllExtRefDiv(uint8_t frdiv) { MCG->C1 = ((MCG->C1 & ~MCG_C1_FRDIV_MASK) | MCG_C1_FRDIV(frdiv)); } /******************************************************************************* ************************ BOARD_InitBootClocks function ************************ ******************************************************************************/ void BOARD_InitBootClocks(void) { BOARD_BootClockHSRUN(); } /******************************************************************************* ********************* Configuration BOARD_BootClockHSRUN ********************** ******************************************************************************/ /* clang-format off */ /* TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* !!Configuration name: BOARD_BootClockHSRUN called_from_default_init: true outputs: - {id: Bus_clock.outFreq, value: 60 MHz} - {id: CLKOUT.outFreq, value: 60 MHz} - {id: Core_clock.outFreq, value: 180 MHz, locked: true, accuracy: '0.001'} - {id: ENET1588TSCLK.outFreq, value: 180 MHz} - {id: ERCLK32K.outFreq, value: 32.768 kHz} - {id: Flash_clock.outFreq, value: 180/7 MHz} - {id: FlexBus_clock.outFreq, value: 60 MHz} - {id: IRC48MCLK.outFreq, value: 48 MHz} - {id: LPO_clock.outFreq, value: 1 kHz} - {id: LPUARTCLK.outFreq, value: 12 MHz} - {id: MCGFFCLK.outFreq, value: 375 kHz} - {id: MCGIRCLK.outFreq, value: 32.768 kHz} - {id: OSCERCLK.outFreq, value: 12 MHz} - {id: OSCERCLK_UNDIV.outFreq, value: 12 MHz} - {id: PLLFLLCLK.outFreq, value: 48 MHz} - {id: RMIICLK.outFreq, value: 50 MHz} - {id: RTC_CLKOUT.outFreq, value: 1 Hz} - {id: SDHCCLK.outFreq, value: 12 MHz} - {id: System_clock.outFreq, value: 180 MHz} - {id: TPMCLK.outFreq, value: 48 MHz} - {id: TRACECLKIN.outFreq, value: 90 MHz} - {id: USB48MCLK.outFreq, value: 48 MHz} - {id: USBPHYPLLCLK.outFreq, value: 480 MHz} - {id: USBSLCLK.outFreq, value: 32.768 kHz} settings: - {id: MCGMode, value: PEE} - {id: USBPHYConfig, value: PLL_PFD} - {id: powerMode, value: HSRUN} - {id: CLKOUTConfig, value: 'yes'} - {id: ENETTimeSrcConfig, value: 'yes'} - {id: LPUARTClkConfig, value: 'yes'} - {id: MCG.FRDIV.scale, value: '32'} - {id: MCG.IREFS.sel, value: MCG.FRDIV} - {id: MCG.PLLS.sel, value: MCG.PLLCS} - {id: MCG.VDIV.scale, value: '30'} - {id: MCG_C1_IRCLKEN_CFG, value: Enabled} - {id: MCG_C2_OSC_MODE_CFG, value: ModeOscLowPower} - {id: MCG_C2_RANGE0_CFG, value: Very_high} - {id: MCG_C2_RANGE0_FRDIV_CFG, value: Very_high} - {id: OSC_CR_ERCLKEN_CFG, value: Enabled} - {id: OSC_CR_ERCLKEN_UNDIV_CFG, value: Enabled} - {id: RMIISrcConfig, value: 'yes'} - {id: RTCCLKOUTConfig, value: 'yes'} - {id: RTC_CR_OSCE_CFG, value: Enabled} - {id: SDHCClkConfig, value: 'yes'} - {id: SIM.LPUARTSRCSEL.sel, value: OSC.OSCERCLK} - {id: SIM.OSC32KSEL.sel, value: RTC.RTC32KCLK} - {id: SIM.OUTDIV2.scale, value: '3', locked: true} - {id: SIM.OUTDIV3.scale, value: '3', locked: true} - {id: SIM.OUTDIV4.scale, value: '7', locked: true} - {id: SIM.PLLFLLSEL.sel, value: IRC48M.IRC48MCLK} - {id: SIM.RMIICLKSEL.sel, value: SIM.ENET_1588_CLK_EXT} - {id: SIM.SDHCSRCSEL.sel, value: OSC.OSCERCLK} - {id: SIM.TPMSRCSEL.sel, value: SIM.PLLFLLDIV} - {id: SIM.TRACECLKSEL.sel, value: SIM.TRACEDIV} - {id: SIM.TRACEDIV.scale, value: '2'} - {id: SIM.USBSRCSEL.sel, value: SIM.USBDIV} - {id: TPMClkConfig, value: 'yes'} - {id: TraceClkConfig, value: 'yes'} - {id: USBClkConfig, value: 'yes'} - {id: USBPHY.DIV.scale, value: '40'} - {id: USBPHY.PFD_CLK_SEL.sel, value: USBPHY.PFD_CLK_DIV2} - {id: USBPHY.PFD_FRAC_DIV.scale, value: '24', locked: true} sources: - {id: IRC48M.IRC48M.outFreq, value: 48 MHz} - {id: OSC.OSC.outFreq, value: 12 MHz, enabled: true} - {id: RTC.RTC32kHz.outFreq, value: 32.768 kHz, enabled: true} - {id: SIM.ENET_1588_CLK_EXT.outFreq, value: 50 MHz, enabled: true} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/ /* clang-format on */ /******************************************************************************* * Variables for BOARD_BootClockHSRUN configuration ******************************************************************************/ const mcg_config_t mcgConfig_BOARD_BootClockHSRUN = { .mcgMode = kMCG_ModePEE, /* PEE - PLL Engaged External */ .irclkEnableMode = kMCG_IrclkEnable, /* MCGIRCLK enabled, MCGIRCLK disabled in STOP mode */ .ircs = kMCG_IrcSlow, /* Slow internal reference clock selected */ .fcrdiv = 0x1U, /* Fast IRC divider: divided by 2 */ .frdiv = 0x0U, /* FLL reference clock divider: divided by 32 */ .drs = kMCG_DrsLow, /* Low frequency range */ .dmx32 = kMCG_Dmx32Default, /* DCO has a default range of 25% */ .oscsel = kMCG_OscselOsc, /* Selects System Oscillator (OSCCLK) */ .pll0Config = { .enableMode = MCG_PLL_DISABLE, /* MCGPLLCLK disabled */ .prdiv = 0x0U, /* PLL Reference divider: divided by 1 */ .vdiv = 0xeU, /* VCO divider: multiplied by 30 */ }, .pllcs = kMCG_PllClkSelPll0, /* PLL0 output clock is selected */ }; const sim_clock_config_t simConfig_BOARD_BootClockHSRUN = { .pllFllSel = SIM_PLLFLLSEL_IRC48MCLK_CLK, /* PLLFLL select: IRC48MCLK clock */ .pllFllDiv = 0, /* PLLFLLSEL clock divider divisor: divided by 1 */ .pllFllFrac = 0, /* PLLFLLSEL clock divider fraction: multiplied by 1 */ .er32kSrc = SIM_OSC32KSEL_RTC32KCLK_CLK, /* OSC32KSEL select: RTC32KCLK clock (32.768kHz) */ .clkdiv1 = 0x2260000U, /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV2: /3, OUTDIV3: /3, OUTDIV4: /7 */ }; const osc_config_t oscConfig_BOARD_BootClockHSRUN = { .freq = 12000000U, /* Oscillator frequency: 12000000Hz */ .capLoad = (OSC_CAP0P), /* Oscillator capacity load: 0pF */ .workMode = kOSC_ModeOscLowPower, /* Oscillator low power */ .oscerConfig = { .enableMode = kOSC_ErClkEnable, /* Enable external reference clock, disable external reference clock in STOP mode */ .erclkDiv = 0, /* Divider for OSCERCLK: divided by 1 */ }}; /******************************************************************************* * Code for BOARD_BootClockHSRUN configuration ******************************************************************************/ void BOARD_BootClockHSRUN(void) { /* Set HSRUN power mode */ SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll); SMC_SetPowerModeHsrun(SMC); while (SMC_GetPowerModeState(SMC) != kSMC_PowerStateHsrun) { } /* Set the system clock dividers in SIM to safe value. */ CLOCK_SetSimSafeDivs(); /* Configure RTC clock including enabling RTC oscillator. */ CLOCK_CONFIG_SetRtcClock(RTC_OSC_CAP_LOAD_0PF, RTC_RTC32KCLK_PERIPHERALS_ENABLED); /* Initializes OSC0 according to board configuration. */ CLOCK_InitOsc0(&oscConfig_BOARD_BootClockHSRUN); CLOCK_SetXtal0Freq(oscConfig_BOARD_BootClockHSRUN.freq); /* Configure the Internal Reference clock (MCGIRCLK). */ CLOCK_SetInternalRefClkConfig(mcgConfig_BOARD_BootClockHSRUN.irclkEnableMode, mcgConfig_BOARD_BootClockHSRUN.ircs, mcgConfig_BOARD_BootClockHSRUN.fcrdiv); /* Set USB slow clock. */ CLOCK_CONFIG_SetUsbSlowClock(SIM_USB_SLOW_CLK_SEL_MCGIRCLK_CLK); /* Configure USBPHY PLL. */ CLOCK_CONFIG_EnableUsbhs0PhyPllClock(oscConfig_BOARD_BootClockHSRUN.freq); /* Configure USB PFD clock. */ CLOCK_CONFIG_EnableUsbhs0PfdClock(USBPHY_PFD_FRAC_DIV_24, USBPHY_PFD_CLK_SEL_PFD_CLK_DIV_2); /* Configure FLL external reference divider (FRDIV). */ CLOCK_CONFIG_SetFllExtRefDiv(mcgConfig_BOARD_BootClockHSRUN.frdiv); /* Set MCG to PEE mode. */ CLOCK_BootToPeeMode(mcgConfig_BOARD_BootClockHSRUN.oscsel, mcgConfig_BOARD_BootClockHSRUN.pllcs, &mcgConfig_BOARD_BootClockHSRUN.pll0Config); /* Set the clock configuration in SIM module. */ CLOCK_SetSimConfig(&simConfig_BOARD_BootClockHSRUN); /* Set SystemCoreClock variable. */ SystemCoreClock = BOARD_BOOTCLOCKHSRUN_CORE_CLOCK; /* Set RTC_CLKOUT source. */ CLOCK_SetRtcClkOutClock(SIM_RTC_CLKOUT_SEL_RTC1HZCLK_CLK); /* Enable USB FS clock. */ CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, SIM_USB_CLK_48000000HZ); /* Set enet timestamp clock source. */ CLOCK_SetEnetTime0Clock(SIM_ENET_1588T_CLK_SEL_CORE_SYSTEM_CLK); /* Set RMII clock source. */ CLOCK_SetRmii0Clock(SIM_ENET_RMII_CLK_SEL_CLKIN_CLK); /* Set SDHC clock source. */ CLOCK_SetSdhc0Clock(SIM_SDHC_CLK_SEL_OSCERCLK_CLK); /* Set LPUART clock source. */ CLOCK_SetLpuartClock(SIM_LPUART_CLK_SEL_OSCERCLK_CLK); /* Set TPM clock source. */ CLOCK_SetTpmClock(SIM_TPM_CLK_SEL_PLLFLLSEL_CLK); /* Set CLKOUT source. */ CLOCK_SetClkOutClock(SIM_CLKOUT_SEL_FLEXBUS_CLK); /* Set debug trace clock source. */ CLOCK_SetTraceClock(SIM_TRACE_CLK_SEL_MCGOUTCLK_CLK, SIM_TRACE_CLK_DIV_2, SIM_TRACE_CLK_FRAC_1); } /******************************************************************************* ********************* Configuration BOARD_BootClockVLPR *********************** ******************************************************************************/ /* clang-format off */ /* TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* !!Configuration name: BOARD_BootClockVLPR outputs: - {id: Bus_clock.outFreq, value: 4 MHz} - {id: Core_clock.outFreq, value: 4 MHz} - {id: Flash_clock.outFreq, value: 800 kHz} - {id: FlexBus_clock.outFreq, value: 4 MHz} - {id: LPO_clock.outFreq, value: 1 kHz} - {id: System_clock.outFreq, value: 4 MHz} settings: - {id: MCGMode, value: BLPI} - {id: powerMode, value: VLPR} - {id: MCG.CLKS.sel, value: MCG.IRCS} - {id: MCG.FCRDIV.scale, value: '1', locked: true} - {id: MCG.FRDIV.scale, value: '32'} - {id: MCG.IRCS.sel, value: MCG.FCRDIV} - {id: MCG_C2_OSC_MODE_CFG, value: ModeOscLowPower} - {id: MCG_C2_RANGE0_CFG, value: Very_high} - {id: MCG_C2_RANGE0_FRDIV_CFG, value: Very_high} - {id: RTC_CR_CLKO_CFG, value: Disabled} - {id: RTC_CR_OSCE_CFG, value: Enabled} - {id: SIM.OUTDIV3.scale, value: '1'} - {id: SIM.OUTDIV4.scale, value: '5'} sources: - {id: OSC.OSC.outFreq, value: 12 MHz, enabled: true} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/ /* clang-format on */ /******************************************************************************* * Variables for BOARD_BootClockVLPR configuration ******************************************************************************/ const mcg_config_t mcgConfig_BOARD_BootClockVLPR = { .mcgMode = kMCG_ModeBLPI, /* BLPI - Bypassed Low Power Internal */ .irclkEnableMode = MCG_IRCLK_DISABLE, /* MCGIRCLK disabled */ .ircs = kMCG_IrcFast, /* Fast internal reference clock selected */ .fcrdiv = 0x0U, /* Fast IRC divider: divided by 1 */ .frdiv = 0x0U, /* FLL reference clock divider: divided by 32 */ .drs = kMCG_DrsLow, /* Low frequency range */ .dmx32 = kMCG_Dmx32Default, /* DCO has a default range of 25% */ .oscsel = kMCG_OscselOsc, /* Selects System Oscillator (OSCCLK) */ .pll0Config = { .enableMode = MCG_PLL_DISABLE, /* MCGPLLCLK disabled */ .prdiv = 0x0U, /* PLL Reference divider: divided by 1 */ .vdiv = 0x0U, /* VCO divider: multiplied by 16 */ }, .pllcs = kMCG_PllClkSelPll0, /* PLL0 output clock is selected */ }; const sim_clock_config_t simConfig_BOARD_BootClockVLPR = { .pllFllSel = SIM_PLLFLLSEL_MCGFLLCLK_CLK, /* PLLFLL select: MCGFLLCLK clock */ .pllFllDiv = 0, /* PLLFLLSEL clock divider divisor: divided by 1 */ .pllFllFrac = 0, /* PLLFLLSEL clock divider fraction: multiplied by 1 */ .er32kSrc = SIM_OSC32KSEL_OSC32KCLK_CLK, /* OSC32KSEL select: OSC32KCLK clock */ .clkdiv1 = 0x40000U, /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV2: /1, OUTDIV3: /1, OUTDIV4: /5 */ }; const osc_config_t oscConfig_BOARD_BootClockVLPR = { .freq = 12000000U, /* Oscillator frequency: 12000000Hz */ .capLoad = (OSC_CAP0P), /* Oscillator capacity load: 0pF */ .workMode = kOSC_ModeOscLowPower, /* Oscillator low power */ .oscerConfig = { .enableMode = OSC_ER_CLK_DISABLE, /* Disable external reference clock */ .erclkDiv = 0, /* Divider for OSCERCLK: divided by 1 */ }}; /******************************************************************************* * Code for BOARD_BootClockVLPR configuration ******************************************************************************/ void BOARD_BootClockVLPR(void) { /* Set the system clock dividers in SIM to safe value. */ CLOCK_SetSimSafeDivs(); /* Initializes OSC0 according to board configuration. */ CLOCK_InitOsc0(&oscConfig_BOARD_BootClockVLPR); CLOCK_SetXtal0Freq(oscConfig_BOARD_BootClockVLPR.freq); /* Set MCG to BLPI mode. */ CLOCK_BootToBlpiMode(mcgConfig_BOARD_BootClockVLPR.fcrdiv, mcgConfig_BOARD_BootClockVLPR.ircs, mcgConfig_BOARD_BootClockVLPR.irclkEnableMode); /* Select the MCG external reference clock. */ CLOCK_SetExternalRefClkConfig(mcgConfig_BOARD_BootClockVLPR.oscsel); /* Set the clock configuration in SIM module. */ CLOCK_SetSimConfig(&simConfig_BOARD_BootClockVLPR); /* Set VLPR power mode. */ SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll); #if (defined(FSL_FEATURE_SMC_HAS_LPWUI) && FSL_FEATURE_SMC_HAS_LPWUI) SMC_SetPowerModeVlpr(SMC, false); #else SMC_SetPowerModeVlpr(SMC); #endif while (SMC_GetPowerModeState(SMC) != kSMC_PowerStateVlpr) { } /* Set SystemCoreClock variable. */ SystemCoreClock = BOARD_BOOTCLOCKVLPR_CORE_CLOCK; }