1 /* 2 ** ################################################################### 3 ** Processors: MIMX8MD6CVAHZ 4 ** MIMX8MD6DVAJZ 5 ** 6 ** Compilers: Keil ARM C/C++ Compiler 7 ** GNU C Compiler 8 ** IAR ANSI C/C++ Compiler for ARM 9 ** 10 ** Reference manual: IMX8MDQLQRM, Rev. 0, Jan. 2018 11 ** Version: rev. 4.0, 2018-01-26 12 ** Build: b180903 13 ** 14 ** Abstract: 15 ** Provides a system configuration function and a global variable that 16 ** contains the system frequency. It configures the device and initializes 17 ** the oscillator (PLL) that is part of the microcontroller device. 18 ** 19 ** Copyright 2016 Freescale Semiconductor, Inc. 20 ** Copyright 2016-2018 NXP 21 ** All rights reserved. 22 ** 23 ** SPDX-License-Identifier: BSD-3-Clause 24 ** 25 ** http: www.nxp.com 26 ** mail: support@nxp.com 27 ** 28 ** Revisions: 29 ** - rev. 1.0 (2017-01-10) 30 ** Initial version. 31 ** - rev. 2.0 (2017-04-27) 32 ** Rev.B Header EAR1 33 ** - rev. 3.0 (2017-07-19) 34 ** Rev.C Header EAR2 35 ** - rev. 4.0 (2018-01-26) 36 ** Rev.D Header RFP 37 ** 38 ** ################################################################### 39 */ 40 41 /*! 42 * @file MIMX8MD6_cm4 43 * @version 4.0 44 * @date 2018-01-26 45 * @brief Device specific configuration file for MIMX8MD6_cm4 (header file) 46 * 47 * Provides a system configuration function and a global variable that contains 48 * the system frequency. It configures the device and initializes the oscillator 49 * (PLL) that is part of the microcontroller device. 50 */ 51 52 #ifndef _SYSTEM_MIMX8MD6_cm4_H_ 53 #define _SYSTEM_MIMX8MD6_cm4_H_ /**< Symbol preventing repeated inclusion */ 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 #include <stdint.h> 60 61 62 /* i.MX8MQ Definitions */ 63 #ifndef DISABLE_WDOG 64 #define DISABLE_WDOG 1 65 #endif 66 /* Define clock source values */ 67 #define CLK_P_N_FREQ 0u /* The value could be changeD according to the actual usage */ 68 #define CPU_XTAL_SOSC_CLK_25MHZ 25000000u /* Value of the external System Oscillator Clock(SOSC) frequency in Hz */ 69 #define CPU_XTAL_SOSC_CLK_27MHZ 27000000u /* Value of the external System Oscillator Clock(SOSC) frequency in Hz */ 70 #define CPU_HDMI_PHY_CLK_27MHZ 27000000u /* Value of the HDMI PHY 27M clock frequency in Hz*/ 71 #define DEFAULT_SYSTEM_CLOCK 266666666u /* Default System clock value */ 72 73 74 /** 75 * @brief System clock frequency (core clock) 76 * 77 * The system clock frequency supplied to the SysTick timer and the processor 78 * core clock. This variable can be used by the user application to setup the 79 * SysTick timer or configure other parameters. It may also be used by debugger to 80 * query the frequency of the debug timer or configure the trace clock speed 81 * SystemCoreClock is initialized with a correct predefined value. 82 */ 83 extern uint32_t SystemCoreClock; 84 85 /** 86 * @brief Setup the microcontroller system. 87 * 88 * Typically this function configures the oscillator (PLL) that is part of the 89 * microcontroller device. For systems with variable clock speed it also updates 90 * the variable SystemCoreClock. SystemInit is called from startup_device file. 91 */ 92 void SystemInit (void); 93 94 /** 95 * @brief Updates the SystemCoreClock variable. 96 * 97 * It must be called whenever the core clock is changed during program 98 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 99 * the current core clock. 100 */ 101 void SystemCoreClockUpdate (void); 102 103 /** 104 * @brief SystemInit function hook. 105 * 106 * This weak function allows to call specific initialization code during the 107 * SystemInit() execution.This can be used when an application specific code needs 108 * to be called as close to the reset entry as possible (for example the Multicore 109 * Manager MCMGR_EarlyInit() function call). 110 * NOTE: No global r/w variables can be used in this hook function because the 111 * initialization of these variables happens after this function. 112 */ 113 void SystemInitHook (void); 114 115 #ifdef __cplusplus 116 } 117 #endif 118 119 #endif /* _SYSTEM_MIMX8MD6_cm4_H_ */ 120
