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/*
* Copyright (c) 2013 - 2016, Freescale Semiconductor, Inc.
* All rights reserved.
*
* 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 Freescale Semiconductor, Inc. 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.
*/
/* This is a template for clock configuration created by New Kinetis SDK 2.x Project Wizard. Enjoy! */
#include "fsl_device_registers.h"
#include "fsl_common.h"
#include "fsl_clock.h"
#include "fsl_port.h"
#include "clock_config.h"
/*******************************************************************************
* Definitions
******************************************************************************/
/*******************************************************************************
* Variables
******************************************************************************/
/*******************************************************************************
* Code
******************************************************************************/
#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 SIM_OSC32KSEL_OSC32KCLK_CLK 0U /*!< OSC32KSEL select: OSC32KCLK clock */
#define SIM_PLLFLLSEL_MCGFLLCLK_CLK 0U /*!< PLLFLL select: MCGFLLCLK clock */
#define SIM_PLLFLLSEL_MCGPLLCLK_CLK 1U /*!< PLLFLL select: MCGPLLCLK clock */
#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 100000000U /*!< Core clock frequency: 100000000Hz */
/*******************************************************************************
* Variables
******************************************************************************/
/* System clock frequency. */
extern uint32_t SystemCoreClock;
/*******************************************************************************
* Code
******************************************************************************/
/*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_BootClockRUN();
}
/*******************************************************************************
********************** Configuration BOARD_BootClockRUN ***********************
******************************************************************************/
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!Configuration
name: BOARD_BootClockRUN
called_from_default_init: true
outputs:
- {id: Bus_clock.outFreq, value: 50 MHz}
- {id: Core_clock.outFreq, value: 100 MHz, locked: true, accuracy: '0.001'}
- {id: Flash_clock.outFreq, value: 25 MHz}
- {id: FlexBus_clock.outFreq, value: 50 MHz}
- {id: LPO_clock.outFreq, value: 1 kHz}
- {id: MCGFFCLK.outFreq, value: 250 kHz}
- {id: System_clock.outFreq, value: 100 MHz}
settings:
- {id: MCGMode, value: PEE}
- {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'}
- {id: MCG.VDIV.scale, value: '25'}
- {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: SIM.OUTDIV2.scale, value: '2'}
- {id: SIM.OUTDIV3.scale, value: '2'}
- {id: SIM.OUTDIV4.scale, value: '4'}
sources:
- {id: OSC.OSC.outFreq, value: 8 MHz, enabled: true}
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/*******************************************************************************
* Variables for BOARD_BootClockRUN configuration
******************************************************************************/
const mcg_config_t mcgConfig_BOARD_BootClockRUN =
{
.mcgMode = kMCG_ModePEE, /* PEE - PLL Engaged External */
.irclkEnableMode = MCG_IRCLK_DISABLE, /* MCGIRCLK disabled */
.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 = 0x1U, /* PLL Reference divider: divided by 2 */
.vdiv = 0x1U, /* VCO divider: multiplied by 25 */
},
};
const sim_clock_config_t simConfig_BOARD_BootClockRUN =
{
.pllFllSel = SIM_PLLFLLSEL_MCGPLLCLK_CLK, /* PLLFLL select: MCGPLLCLK clock */
.er32kSrc = SIM_OSC32KSEL_OSC32KCLK_CLK, /* OSC32KSEL select: OSC32KCLK clock */
.clkdiv1 = 0x01130000U, /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV2: /2, OUTDIV3: /2, OUTDIV4: /4 */
};
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 = OSC_ER_CLK_DISABLE, /* Disable external reference clock */
}
};
/*******************************************************************************
* 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(mcgConfig_BOARD_BootClockRUN.oscsel,
kMCG_PllClkSelPll0,
&mcgConfig_BOARD_BootClockRUN.pll0Config);
/* Set the clock configuration in SIM module. */
CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN);
/* Set SystemCoreClock variable. */
SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
}
#if 0
void BOARD_InitOsc0(void)
{
const osc_config_t oscConfig = {.freq = BOARD_XTAL0_CLK_HZ,
.capLoad = 0,
.workMode = kOSC_ModeOscLowPower,
.oscerConfig = {
.enableMode = kOSC_ErClkEnable,
#if (defined(FSL_FEATURE_OSC_HAS_EXT_REF_CLOCK_DIVIDER) && FSL_FEATURE_OSC_HAS_EXT_REF_CLOCK_DIVIDER)
.erclkDiv = 0U,
#endif
}};
CLOCK_InitOsc0(&oscConfig);
/* Passing the XTAL0 frequency to clock driver. */
CLOCK_SetXtal0Freq(BOARD_XTAL0_CLK_HZ);
/* Use RTC_CLKIN input clock directly. */
//CLOCK_SetXtal32Freq(BOARD_XTAL32K_CLK_HZ);
}
void BOARD_BootClockRUN(void)
{
/*
* Core clock: 100MHz
* Bus clock: 50MHz
*/
mcg_pll_config_t pll0Config = {
.enableMode = 0U, .prdiv = 0x3U, .vdiv = 0x18U,
};
const sim_clock_config_t simConfig = {
.pllFllSel = 1U, /* PLLFLLSEL select PLL. */
.er32kSrc = 2U, /* ERCLK32K selection, use RTC. */
.clkdiv1 = 0x01130000U, /* SIM_CLKDIV1. */
};
CLOCK_SetSimSafeDivs();
BOARD_InitOsc0();
CLOCK_CalcPllDiv(BOARD_XTAL0_CLK_HZ, 100000000U, &pll0Config.prdiv, &pll0Config.vdiv);
CLOCK_BootToPeeMode(kMCG_OscselOsc, kMCG_PllClkSelPll0, &pll0Config);
CLOCK_SetInternalRefClkConfig(kMCG_IrclkEnable, kMCG_IrcSlow, 0);
CLOCK_SetSimConfig(&simConfig);
SystemCoreClock = 100000000U;
}
#endif
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