1 /*
2 ** ###################################################################
3 **     Processors:          MIMX9131CVVXJ
4 **                          MIMX9131DVVXJ
5 **
6 **     Compilers:           GNU C Compiler
7 **                          IAR ANSI C/C++ Compiler for ARM
8 **                          Keil ARM C/C++ Compiler
9 **
10 **     Reference manual:    IMX91RM Rev.1
11 **     Version:             rev. 1.0, 2024-11-15
12 **     Build:               b250112
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 2016-2025 NXP
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 (2024-11-15)
28 **         Initial version.
29 **
30 ** ###################################################################
31 */
32 
33 /*!
34  * @file MIMX9131
35  * @version 1.0
36  * @date 2024-11-15
37  * @brief Device specific configuration file for MIMX9131 (header file)
38  *
39  * Provides a system configuration function and a global variable that contains
40  * the system frequency. It configures the device and initializes the oscillator
41  * (PLL) that is part of the microcontroller device.
42  */
43 
44 #ifndef _SYSTEM_MIMX9131_H_
45 #define _SYSTEM_MIMX9131_H_                      /**< Symbol preventing repeated inclusion */
46 
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
50 
51 #include <stdint.h>
52 
53 /* Define clock source values */
54 #define DEFAULT_SYSTEM_CLOCK   24000000U /* Default System clock value */
55 
56 /**
57  * @brief System clock frequency (core clock)
58  *
59  * The system clock frequency supplied to the SysTick timer and the processor
60  * core clock. This variable can be used by the user application to setup the
61  * SysTick timer or configure other parameters. It may also be used by debugger to
62  * query the frequency of the debug timer or configure the trace clock speed
63  * SystemCoreClock is initialized with a correct predefined value.
64  */
65 extern uint32_t SystemCoreClock;
66 
67 /**
68  * @brief Setup the microcontroller system.
69  *
70  * Typically this function configures the oscillator (PLL) that is part of the
71  * microcontroller device. For systems with variable clock speed it also updates
72  * the variable SystemCoreClock. SystemInit is called from startup_device file.
73  */
74 void SystemInit (void);
75 
76 /**
77  * @brief Updates the SystemCoreClock variable.
78  *
79  * It must be called whenever the core clock is changed during program
80  * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
81  * the current core clock.
82  */
83 void SystemCoreClockUpdate (void);
84 
85 /**
86  * @brief SystemInit function hook.
87  *
88  * This weak function allows to call specific initialization code during the
89  * SystemInit() execution.This can be used when an application specific code needs
90  * to be called as close to the reset entry as possible (for example the Multicore
91  * Manager MCMGR_EarlyInit() function call).
92  * NOTE: No global r/w variables can be used in this hook function because the
93  * initialization of these variables happens after this function.
94  */
95 void SystemInitHook (void);
96 
97 #ifdef __cplusplus
98 }
99 #endif
100 
101 #endif  /* _SYSTEM_MIMX9131_H_ */
102