155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/*
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* Copyright (c) 2012, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _CCM_PLL_H_
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#define _CCM_PLL_H_
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#include "sdk_types.h"
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//! @addtogroup diag_clocks
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//! @{
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////////////////////////////////////////////////////////////////////////////////
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// Definitions
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////////////////////////////////////////////////////////////////////////////////
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#define CLK_SRC_32K 32768
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//! @brief Create a clock gate bit mask value.
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//! @param x 0..15, for CG0 to CG15
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#define CG(x) (3 << (x*2))
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//! @brief Constants for CCM CCGR register fields.
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enum _clock_gate_constants
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{
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CLOCK_ON = 0x3, //!< Clock always on in both run and stop modes.
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CLOCK_ON_RUN = 0x1, //!< Clock on only in run mode.
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CLOCK_OFF = 0x0 //!< Clocked gated off.
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};
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//! @brief Low power mdoes.
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typedef enum _lp_modes {
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RUN_MODE,
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WAIT_MODE,
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STOP_MODE,
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} lp_modes_t;
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//! @brief Main clock sources.
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typedef enum _main_clocks {
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CPU_CLK,
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AXI_CLK,
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MMDC_CH0_AXI_CLK,
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AHB_CLK,
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IPG_CLK,
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IPG_PER_CLK,
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MMDC_CH1_AXI_CLK,
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} main_clocks_t;
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//! @brief Peripheral clocks.
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typedef enum _peri_clocks {
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UART1_MODULE_CLK,
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UART2_MODULE_CLK,
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UART3_MODULE_CLK,
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UART4_MODULE_CLK,
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UART5_MODULE_CLK,
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UART6_MODULE_CLK,
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UART7_MODULE_CLK,
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UART8_MODULE_CLK,
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SSI1_BAUD,
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SSI2_BAUD,
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CSI_BAUD,
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MSTICK1_CLK,
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MSTICK2_CLK,
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RAWNAND_CLK,
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USB_CLK,
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VPU_CLK,
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SPI_CLK,
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CAN_CLK
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} peri_clocks_t;
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//! @brief Available PLLs.
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typedef enum plls {
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PLL1,
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PLL2,
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PLL3,
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PLL4,
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PLL5,
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} plls_t;
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extern const uint32_t PLL1_OUTPUT;
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extern const uint32_t PLL2_OUTPUT[];
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extern const uint32_t PLL3_OUTPUT[];
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extern const uint32_t PLL4_OUTPUT;
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extern const uint32_t PLL5_OUTPUT;
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////////////////////////////////////////////////////////////////////////////////
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// API
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////////////////////////////////////////////////////////////////////////////////
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#if defined(__cplusplus)
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extern "C" {
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#endif
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//! @brief Set/unset clock gating for a peripheral.
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//! @param base_address configure clock gating for that module from the base address.
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//! @param gating_mode clock gating mode: CLOCK_ON or CLOCK_OFF.
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void clock_gating_config(uint32_t base_address, uint32_t gating_mode);
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//! @brief Returns the frequency of a clock in megahertz.
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uint32_t get_main_clock(main_clocks_t clk);
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//! @brief Returns the frequency of a clock in megahertz.
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uint32_t get_peri_clock(peri_clocks_t clk);
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//! @brief Inits clock sources.
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void ccm_init(void);
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//! @brief Prepare and enter in a low power mode.
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//! @param lp_mode low power mode : WAIT_MODE or STOP_MODE.
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void ccm_enter_low_power(lp_modes_t lp_mode);
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//! @brief Mask/unmask an interrupt source that can wake up the processor when in a
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//! low power mode.
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//!
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//! @param irq_id ID of the interrupt to mask/unmask.
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//! @param doEnable Pass true to unmask the source ID.
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void ccm_set_lpm_wakeup_source(uint32_t irq_id, bool doEnable);
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#if defined(__cplusplus)
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}
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#endif
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//! @}
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// EOF
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////////////////////////////////////////////////////////////////////////////////
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