1 /* 2 ** ################################################################### 3 ** Processors: MIMX8US3CVP08_cm33 4 ** MIMX8US3DVK08_cm33 5 ** MIMX8US3DVP08_cm33 6 ** 7 ** Compilers: GNU C Compiler 8 ** IAR ANSI C/C++ Compiler for ARM 9 ** Keil ARM C/C++ Compiler 10 ** 11 ** Reference manual: IMX8ULPRM, Rev. D, December. 2022 12 ** Version: rev. 5.0, 2023-04-27 13 ** Build: b230927 14 ** 15 ** Abstract: 16 ** Provides a system configuration function and a global variable that 17 ** contains the system frequency. It configures the device and initializes 18 ** the oscillator (PLL) that is part of the microcontroller device. 19 ** 20 ** Copyright 2016 Freescale Semiconductor, Inc. 21 ** Copyright 2016-2023 NXP 22 ** SPDX-License-Identifier: BSD-3-Clause 23 ** 24 ** http: www.nxp.com 25 ** mail: support@nxp.com 26 ** 27 ** Revisions: 28 ** - rev. 1.0 (2020-05-25) 29 ** Initial version. 30 ** - rev. 2.0 (2020-09-18) 31 ** Base on rev A RM 32 ** - rev. 3.0 (2021-01-20) 33 ** Base on rev A.1 RM 34 ** - rev. 4.0 (2021-07-05) 35 ** Base on rev B RM 36 ** - rev. 5.0 (2023-04-27) 37 ** Base on rev D RM 38 ** 39 ** ################################################################### 40 */ 41 42 /*! 43 * @file MIMX8US3_cm33 44 * @version 1.0 45 * @date 270923 46 * @brief Device specific configuration file for MIMX8US3_cm33 (header file) 47 * 48 * Provides a system configuration function and a global variable that contains 49 * the system frequency. It configures the device and initializes the oscillator 50 * (PLL) that is part of the microcontroller device. 51 */ 52 #ifndef _SYSTEM_MIMX8US3_cm33_H_ 53 #define _SYSTEM_MIMX8US3_cm33_H_ /**< Symbol preventing repeated inclusion */ 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 #include <stdint.h> 60 61 #define DEFAULT_SYSTEM_CLOCK 192000000U /* Default System clock value */ 62 #ifndef CLK_XTAL_OSC_CLK 63 #define CLK_XTAL_OSC_CLK 24000000U /* Default XTAL OSC clock */ 64 #endif 65 #define CLK_RTC_32K_CLK 32768U /* RTC oscillator 32 kHz (32k_clk) */ 66 #define CLK_FRO_192MHZ 192000000U /* FRO 192 MHz (fro_192m) */ 67 #define CLK_LPOSC_1MHZ 1000000U /* LPOSC 1 MHz */ 68 #ifndef CLK_LVDS_CLK 69 #define CLK_LVDS_CLK 0U /* Default LVDS clock */ 70 #endif 71 72 /** 73 * @brief System clock frequency (core clock) 74 * 75 * The system clock frequency supplied to the SysTick timer and the processor 76 * core clock. This variable can be used by the user application to setup the 77 * SysTick timer or configure other parameters. It may also be used by debugger to 78 * query the frequency of the debug timer or configure the trace clock speed 79 * SystemCoreClock is initialized with a correct predefined value. 80 */ 81 extern uint32_t SystemCoreClock; 82 83 /** 84 * @brief Setup the microcontroller system. 85 * 86 * Typically this function configures the oscillator (PLL) that is part of the 87 * microcontroller device. For systems with variable clock speed it also updates 88 * the variable SystemCoreClock. SystemInit is called from startup_device file. 89 */ 90 void SystemInit(void); 91 92 /** 93 * @brief Updates the SystemCoreClock variable. 94 * 95 * It must be called whenever the core clock is changed during program 96 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 97 * the current core clock. 98 */ 99 void SystemCoreClockUpdate(void); 100 101 /** 102 * @brief SystemInit function hook. 103 * 104 * This weak function allows to call specific initialization code during the 105 * SystemInit() execution.This can be used when an application specific code needs 106 * to be called as close to the reset entry as possible (for example the Multicore 107 * Manager MCMGR_EarlyInit() function call). 108 * NOTE: No global r/w variables can be used in this hook function because the 109 * initialization of these variables happens after this function. 110 */ 111 void SystemInitHook(void); 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 #endif /* _SYSTEM_MIMX8US3_cm33_H_ */ 118
