/* * Copyright (c) 2015, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * o Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * o Redistributions in binary form must reproduce the above copyright notice, this * list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * * o Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * 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. */ /* TEXT BELOW IS USED AS SETTING FOR THE CLOCKS TOOL ***************************** !!ClocksProfile product: Clocks v1.0 processor: MKL25Z128xxx4 package_id: MKL25Z128VLK4 mcu_data: ksdk2_0 processor_version: 1.1.0 board: FRDM-KL25Z * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR THE CLOCKS TOOL **/ #include "fsl_smc.h" #include "clock_config.h" /******************************************************************************* * Definitions ******************************************************************************/ #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 SIM_OSC32KSEL_LPO_CLK 3U /*!< OSC32KSEL select: LPO clock */ #define SIM_PLLFLLSEL_MCGFLLCLK_CLK 0U /*!< PLLFLL select: MCGFLLCLK clock */ #define SIM_PLLFLLSEL_MCGPLLCLK_CLK 1U /*!< PLLFLL select: MCGPLLCLK clock */ /******************************************************************************* * Variables ******************************************************************************/ /* System clock frequency. */ extern uint32_t SystemCoreClock; /******************************************************************************* * Code ******************************************************************************/ /******************************************************************************* ************************ BOARD_InitBootClocks function ************************ ******************************************************************************/ void BOARD_InitBootClocks(void) { BOARD_BootClockRUN(); } /*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)); } /******************************************************************************* ********************** Configuration BOARD_BootClockRUN *********************** ******************************************************************************/ /* TEXT BELOW IS USED AS SETTING FOR THE CLOCKS TOOL ***************************** !!Configuration name: BOARD_BootClockRUN outputs: - {id: Bus_clock.outFreq, value: 24 MHz} - {id: Core_clock.outFreq, value: 48 MHz, locked: true, accuracy: '0.001'} - {id: ERCLK32K.outFreq, value: 1 kHz} - {id: Flash_clock.outFreq, value: 24 MHz} - {id: LPO_clock.outFreq, value: 1 kHz} - {id: MCGIRCLK.outFreq, value: 32.768 kHz} - {id: OSCERCLK.outFreq, value: 8 MHz} - {id: PLLFLLCLK.outFreq, value: 48 MHz} - {id: System_clock.outFreq, value: 48 MHz} settings: - {id: MCGMode, value: PEE} - {id: MCG.FCRDIV.scale, value: '1', locked: true} - {id: MCG.FRDIV.scale, value: '32'} - {id: MCG.IREFS.sel, value: MCG.FRDIV} - {id: MCG.PLLS.sel, value: MCG.PLL} - {id: MCG.PRDIV.scale, value: '2', locked: true} - {id: MCG.VDIV.scale, value: '24', locked: true} - {id: MCG_C1_IRCLKEN_CFG, value: Enabled} - {id: MCG_C2_OSC_MODE_CFG, value: ModeOscLowPower} - {id: MCG_C2_RANGE0_CFG, value: High} - {id: MCG_C2_RANGE0_FRDIV_CFG, value: High} - {id: OSC0_CR_ERCLKEN_CFG, value: Enabled} - {id: OSC_CR_ERCLKEN_CFG, value: Enabled} - {id: SIM.CLKOUTSEL.sel, value: SIM.OUTDIV4} - {id: SIM.OSC32KSEL.sel, value: PMC.LPOCLK} - {id: SIM.OUTDIV1.scale, value: '2'} - {id: SIM.PLLFLLSEL.sel, value: SIM.MCGPLLCLK_DIV2} - {id: SIM.TPMSRCSEL.sel, value: SIM.PLLFLLSEL} - {id: SIM.UART0SRCSEL.sel, value: SIM.PLLFLLSEL} - {id: SIM.USBSRCSEL.sel, value: SIM.PLLFLLSEL} sources: - {id: OSC.OSC.outFreq, value: 8 MHz, enabled: true} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR THE CLOCKS TOOL **/ /******************************************************************************* * Variables for BOARD_BootClockRUN configuration ******************************************************************************/ const mcg_config_t mcgConfig_BOARD_BootClockRUN = { .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 = 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% */ .pll0Config = { .enableMode = MCG_PLL_DISABLE, /* MCGPLLCLK disabled */ .prdiv = 0x1U, /* PLL Reference divider: divided by 2 */ .vdiv = 0x0U, /* VCO divider: multiplied by 24 */ }, }; const sim_clock_config_t simConfig_BOARD_BootClockRUN = { .pllFllSel = SIM_PLLFLLSEL_MCGPLLCLK_CLK, /* PLLFLL select: MCGPLLCLK clock */ .er32kSrc = SIM_OSC32KSEL_LPO_CLK, /* OSC32KSEL select: LPO clock */ .clkdiv1 = 0x10010000U, /* SIM_CLKDIV1 - OUTDIV1: /2, OUTDIV4: /2 */ }; const osc_config_t oscConfig_BOARD_BootClockRUN = { .freq = 8000000U, /* Oscillator frequency: 8000000Hz */ .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 */ } }; /******************************************************************************* * Code for BOARD_BootClockRUN configuration ******************************************************************************/ void BOARD_BootClockRUN(void) { /* Set the system clock dividers in SIM to safe value. */ CLOCK_SetSimSafeDivs(); /* Initializes OSC0 according to board configuration. */ CLOCK_InitOsc0(&oscConfig_BOARD_BootClockRUN); CLOCK_SetXtal0Freq(oscConfig_BOARD_BootClockRUN.freq); /* Configure FLL external reference divider (FRDIV). */ CLOCK_CONFIG_SetFllExtRefDiv(mcgConfig_BOARD_BootClockRUN.frdiv); /* Set MCG to PEE mode. */ CLOCK_BootToPeeMode(kMCG_OscselOsc, kMCG_PllClkSelPll0, &mcgConfig_BOARD_BootClockRUN.pll0Config); /* Configure the Internal Reference clock (MCGIRCLK). */ CLOCK_SetInternalRefClkConfig(mcgConfig_BOARD_BootClockRUN.irclkEnableMode, mcgConfig_BOARD_BootClockRUN.ircs, mcgConfig_BOARD_BootClockRUN.fcrdiv); /* Set the clock configuration in SIM module. */ CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN); /* Set SystemCoreClock variable. */ SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK; } /******************************************************************************* ********************* Configuration BOARD_BootClockVLPR *********************** ******************************************************************************/ /* TEXT BELOW IS USED AS SETTING FOR THE CLOCKS TOOL ***************************** !!Configuration name: BOARD_BootClockVLPR outputs: - {id: Bus_clock.outFreq, value: 800 kHz} - {id: Core_clock.outFreq, value: 4 MHz} - {id: ERCLK32K.outFreq, value: 1 kHz} - {id: Flash_clock.outFreq, value: 800 kHz} - {id: LPO_clock.outFreq, value: 1 kHz} - {id: MCGIRCLK.outFreq, value: 4 MHz} - {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_C1_IRCLKEN_CFG, value: Enabled} - {id: MCG_C2_OSC_MODE_CFG, value: ModeOscLowPower} - {id: MCG_C2_RANGE0_CFG, value: High} - {id: MCG_C2_RANGE0_FRDIV_CFG, value: High} - {id: SIM.OSC32KSEL.sel, value: PMC.LPOCLK} - {id: SIM.OUTDIV4.scale, value: '5'} sources: - {id: OSC.OSC.outFreq, value: 8 MHz} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR THE CLOCKS TOOL **/ /******************************************************************************* * Variables for BOARD_BootClockVLPR configuration ******************************************************************************/ const mcg_config_t mcgConfig_BOARD_BootClockVLPR = { .mcgMode = kMCG_ModeBLPI, /* BLPI - Bypassed Low Power Internal */ .irclkEnableMode = kMCG_IrclkEnable, /* MCGIRCLK enabled, MCGIRCLK disabled in STOP mode */ .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% */ .pll0Config = { .enableMode = MCG_PLL_DISABLE, /* MCGPLLCLK disabled */ .prdiv = 0x0U, /* PLL Reference divider: divided by 1 */ .vdiv = 0x0U, /* VCO divider: multiplied by 24 */ }, }; const sim_clock_config_t simConfig_BOARD_BootClockVLPR = { .pllFllSel = SIM_PLLFLLSEL_MCGFLLCLK_CLK, /* PLLFLL select: MCGFLLCLK clock */ .er32kSrc = SIM_OSC32KSEL_LPO_CLK, /* OSC32KSEL select: LPO clock */ .clkdiv1 = 0x40000U, /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV4: /5 */ }; const osc_config_t oscConfig_BOARD_BootClockVLPR = { .freq = 0U, /* Oscillator frequency: 0Hz */ .capLoad = (OSC_CAP0P), /* Oscillator capacity load: 0pF */ .workMode = kOSC_ModeOscLowPower, /* Oscillator low power */ .oscerConfig = { .enableMode = OSC_ER_CLK_DISABLE, /* Disable external reference clock */ } }; /******************************************************************************* * Code for BOARD_BootClockVLPR configuration ******************************************************************************/ void BOARD_BootClockVLPR(void) { /* Set the system clock dividers in SIM to safe value. */ CLOCK_SetSimSafeDivs(); /* Set MCG to BLPI mode. */ CLOCK_BootToBlpiMode(mcgConfig_BOARD_BootClockVLPR.fcrdiv, mcgConfig_BOARD_BootClockVLPR.ircs, mcgConfig_BOARD_BootClockVLPR.irclkEnableMode); /* 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; }