/* ** ################################################################### ** Processor: MIMX8QX6AVLFZ_dsp ** Compiler: Xtensa Compiler ** Reference manual: IMX8DQXPRM, Rev. E, 6/2019 ** Version: rev. 4.0, 2020-06-19 ** Build: b231016 ** ** Abstract: ** Provides a system configuration function and a global variable that ** contains the system frequency. It configures the device and initializes ** the oscillator (PLL) that is part of the microcontroller device. ** ** Copyright 2016 Freescale Semiconductor, Inc. ** Copyright 2016-2023 NXP ** SPDX-License-Identifier: BSD-3-Clause ** ** http: www.nxp.com ** mail: support@nxp.com ** ** Revisions: ** - rev. 1.0 (2016-06-02) ** Initial version. ** - rev. 2.0 (2017-08-23) ** RevA Header EAR ** - rev. 3.0 (2018-08-22) ** RevB Header EAR ** - rev. 4.0 (2020-06-19) ** RevC Header RFP ** ** ################################################################### */ /*! * @file MIMX8QX6_dsp * @version 4.0 * @date 2020-06-19 * @brief Device specific configuration file for MIMX8QX6_dsp (header file) * * Provides a system configuration function and a global variable that contains * the system frequency. It configures the device and initializes the oscillator * (PLL) that is part of the microcontroller device. */ #ifndef _SYSTEM_MIMX8QX6_dsp_H_ #define _SYSTEM_MIMX8QX6_dsp_H_ /**< Symbol preventing repeated inclusion */ #ifdef __cplusplus extern "C" { #endif #include #define DEFAULT_SYSTEM_CLOCK 1200000000u /* Default System clock value */ /** * @brief System clock frequency (core clock) * * The system clock frequency supplied to the SysTick timer and the processor * core clock. This variable can be used by the user application to setup the * SysTick timer or configure other parameters. It may also be used by debugger to * query the frequency of the debug timer or configure the trace clock speed * SystemCoreClock is initialized with a correct predefined value. */ extern uint32_t SystemCoreClock; /** * @brief Setup the microcontroller system. * * Typically this function configures the oscillator (PLL) that is part of the * microcontroller device. For systems with variable clock speed it also updates * the variable SystemCoreClock. SystemInit is called from startup_device file. */ void SystemInit (void); /** * @brief Updates the SystemCoreClock variable. * * It must be called whenever the core clock is changed during program * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates * the current core clock. */ void SystemCoreClockUpdate (void); /** * @brief SystemInit function hook. * * This weak function allows to call specific initialization code during the * SystemInit() execution.This can be used when an application specific code needs * to be called as close to the reset entry as possible (for example the Multicore * Manager MCMGR_EarlyInit() function call). * NOTE: No global r/w variables can be used in this hook function because the * initialization of these variables happens after this function. */ void SystemInitHook (void); #ifdef __cplusplus } #endif #endif /* _SYSTEM_MIMX8QX6_dsp_H_ */