1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (c) 2012, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _CCM_PLL_H_
#define _CCM_PLL_H_
#include "sdk_types.h"
//! @addtogroup diag_clocks
//! @{
////////////////////////////////////////////////////////////////////////////////
// Definitions
////////////////////////////////////////////////////////////////////////////////
#define CLK_SRC_32K 32768
//! @brief Create a clock gate bit mask value.
//! @param x 0..15, for CG0 to CG15
#define CG(x) (3 << (x*2))
//! @brief Constants for CCM CCGR register fields.
enum _clock_gate_constants
{
CLOCK_ON = 0x3, //!< Clock always on in both run and stop modes.
CLOCK_ON_RUN = 0x1, //!< Clock on only in run mode.
CLOCK_OFF = 0x0 //!< Clocked gated off.
};
//! @brief Low power mdoes.
typedef enum _lp_modes {
RUN_MODE,
WAIT_MODE,
STOP_MODE,
} lp_modes_t;
//! @brief Main clock sources.
typedef enum _main_clocks {
CPU_CLK,
AXI_CLK,
MMDC_CH0_AXI_CLK,
AHB_CLK,
IPG_CLK,
IPG_PER_CLK,
MMDC_CH1_AXI_CLK,
} main_clocks_t;
//! @brief Peripheral clocks.
typedef enum _peri_clocks {
UART1_MODULE_CLK,
UART2_MODULE_CLK,
UART3_MODULE_CLK,
UART4_MODULE_CLK,
UART5_MODULE_CLK,
UART6_MODULE_CLK,
UART7_MODULE_CLK,
UART8_MODULE_CLK,
SSI1_BAUD,
SSI2_BAUD,
CSI_BAUD,
MSTICK1_CLK,
MSTICK2_CLK,
RAWNAND_CLK,
USB_CLK,
VPU_CLK,
SPI_CLK,
CAN_CLK
} peri_clocks_t;
//! @brief Available PLLs.
typedef enum plls {
PLL1,
PLL2,
PLL3,
PLL4,
PLL5,
} plls_t;
extern const uint32_t PLL1_OUTPUT;
extern const uint32_t PLL2_OUTPUT[];
extern const uint32_t PLL3_OUTPUT[];
extern const uint32_t PLL4_OUTPUT;
extern const uint32_t PLL5_OUTPUT;
////////////////////////////////////////////////////////////////////////////////
// API
////////////////////////////////////////////////////////////////////////////////
#if defined(__cplusplus)
extern "C" {
#endif
//! @brief Set/unset clock gating for a peripheral.
//! @param base_address configure clock gating for that module from the base address.
//! @param gating_mode clock gating mode: CLOCK_ON or CLOCK_OFF.
void clock_gating_config(uint32_t base_address, uint32_t gating_mode);
//! @brief Returns the frequency of a clock in megahertz.
uint32_t get_main_clock(main_clocks_t clk);
//! @brief Returns the frequency of a clock in megahertz.
uint32_t get_peri_clock(peri_clocks_t clk);
//! @brief Inits clock sources.
void ccm_init(void);
//! @brief Prepare and enter in a low power mode.
//! @param lp_mode low power mode : WAIT_MODE or STOP_MODE.
void ccm_enter_low_power(lp_modes_t lp_mode);
//! @brief Mask/unmask an interrupt source that can wake up the processor when in a
//! low power mode.
//!
//! @param irq_id ID of the interrupt to mask/unmask.
//! @param doEnable Pass true to unmask the source ID.
void ccm_set_lpm_wakeup_source(uint32_t irq_id, bool doEnable);
#if defined(__cplusplus)
}
#endif
//! @}
#endif
////////////////////////////////////////////////////////////////////////////////
// EOF
////////////////////////////////////////////////////////////////////////////////
|
