1 /* 2 ** ################################################################### 3 ** Processor: MIMX8DX4AVLFZ 4 ** Compilers: GNU C Compiler 5 ** IAR ANSI C/C++ Compiler for ARM 6 ** Keil ARM C/C++ Compiler 7 ** 8 ** Reference manual: IMX8DQXPRM, Rev. E, 6/2019 9 ** Version: rev. 4.0, 2020-06-19 10 ** Build: b200806 11 ** 12 ** Abstract: 13 ** Provides a system configuration function and a global variable that 14 ** contains the system frequency. It configures the device and initializes 15 ** the oscillator (PLL) that is part of the microcontroller device. 16 ** 17 ** Copyright 2016 Freescale Semiconductor, Inc. 18 ** Copyright 2016-2020 NXP 19 ** All rights reserved. 20 ** 21 ** SPDX-License-Identifier: BSD-3-Clause 22 ** 23 ** http: www.nxp.com 24 ** mail: support@nxp.com 25 ** 26 ** Revisions: 27 ** - rev. 1.0 (2016-06-02) 28 ** Initial version. 29 ** - rev. 2.0 (2017-08-23) 30 ** RevA Header EAR 31 ** - rev. 3.0 (2018-08-22) 32 ** RevB Header EAR 33 ** - rev. 4.0 (2020-06-19) 34 ** RevC Header RFP 35 ** 36 ** ################################################################### 37 */ 38 39 /*! 40 * @file MIMX8DX4_cm4 41 * @version 1.0 42 * @date 060820 43 * @brief Device specific configuration file for MIMX8DX4_cm4 (header file) 44 * 45 * Provides a system configuration function and a global variable that contains 46 * the system frequency. It configures the device and initializes the oscillator 47 * (PLL) that is part of the microcontroller device. 48 */ 49 #ifndef _SYSTEM_MIMX8DX4_CM4_H_ 50 #define _SYSTEM_MIMX8DX4_CM4_H_ /**< Symbol preventing repeated inclusion */ 51 52 #ifdef __cplusplus 53 extern "C" { 54 #endif 55 56 #include <stdint.h> 57 #include "main/rpc.h" 58 #include "svc/pm/pm_api.h" 59 60 #ifndef DISABLE_WDOG 61 #define DISABLE_WDOG 1 62 #endif 63 64 /** 65 * When downloading/debuging with Debugger, the Parity/ECC error check is disabled by debugger. 66 * Define ENABLE_ECC_DEBUG to non-zero value to re-enable the check during debugging. 67 */ 68 #ifndef ENABLE_ECC_DEBUG 69 #define ENABLE_ECC_DEBUG 0 70 #endif 71 72 #define DEFAULT_SYSTEM_CLOCK 264000000u /* Default System clock value */ 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 Open the SCFW IPC channel. 105 * 106 * Typically this function opens the IPC channel between current Subsystem and SCU. 107 * This function uses SCFW API to initialize the MU channel. SystemInitScfwIpc should 108 * be called before using SCFW API. 109 */ 110 void SystemInitScfwIpc (void); 111 112 /** 113 * @brief Get the SCFW IPC handle. 114 * 115 * This function gets the IPC handle which could be used to communicate with SCFW. 116 * SystemGetScfwIpcHandle should be called after SCFW IPC channel is initialized. 117 */ 118 sc_ipc_t SystemGetScfwIpcHandle (void); 119 120 #ifdef __cplusplus 121 } 122 #endif 123 124 #endif /* _SYSTEM_MIMX8DX4_CM4_H_ */ 125
