268 lines
7.2 KiB
C
268 lines
7.2 KiB
C
/*
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* Copyright (c) 2015, 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
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* modification, 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
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* list 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,
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* this list of conditions and the following disclaimer in the documentation
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* and/or 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"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "clock_freq.h"
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#include "ccm_imx7d.h"
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#include "ccm_analog_imx7d.h"
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/*FUNCTION**********************************************************************
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*
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* Function Name : get_gpt_clock_freq
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* Description : Get clock frequency applies to the GPT module
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*
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*END**************************************************************************/
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uint32_t get_gpt_clock_freq(GPT_Type *base)
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{
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uint32_t root;
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uint32_t hz;
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uint32_t pre, post;
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switch ((uint32_t)base) {
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case GPT3_BASE:
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root = CCM_GetRootMux(CCM, ccmRootGpt3);
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CCM_GetRootDivider(CCM, ccmRootGpt3, &pre, &post);
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break;
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case GPT4_BASE:
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root = CCM_GetRootMux(CCM, ccmRootGpt4);
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CCM_GetRootDivider(CCM, ccmRootGpt4, &pre, &post);
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break;
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default:
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return 0;
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}
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switch (root) {
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case ccmRootmuxGptOsc24m:
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hz = 24000000;
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break;
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case ccmRootmuxGptSysPllPfd0:
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hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd0Frac);
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break;
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default:
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return 0;
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}
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return hz / (pre + 1) / (post + 1);
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : get_ecspi_clock_freq
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* Description : Get clock frequency applys to the ECSPI module
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*
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*END**************************************************************************/
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uint32_t get_ecspi_clock_freq(ECSPI_Type *base)
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{
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uint32_t root;
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uint32_t hz;
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uint32_t pre, post;
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switch ((uint32_t)base) {
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case ECSPI1_BASE:
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root = CCM_GetRootMux(CCM, ccmRootEcspi1);
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CCM_GetRootDivider(CCM, ccmRootEcspi1, &pre, &post);
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break;
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case ECSPI2_BASE:
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root = CCM_GetRootMux(CCM, ccmRootEcspi2);
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CCM_GetRootDivider(CCM, ccmRootEcspi2, &pre, &post);
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break;
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default:
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return 0;
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}
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switch (root) {
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case ccmRootmuxEcspiOsc24m:
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hz = 24000000;
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break;
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case ccmRootmuxEcspiSysPllPfd4:
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hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd4Frac);
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break;
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default:
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return 0;
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}
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return hz / (pre + 1) / (post + 1);
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : get_flexcan_clock_freq
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* Description : Get clock frequency applys to the FLEXCAN module
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*
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*END**************************************************************************/
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uint32_t get_flexcan_clock_freq(CAN_Type *base)
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{
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uint32_t root;
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uint32_t hz;
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uint32_t pre, post;
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switch ((uint32_t)base) {
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case CAN1_BASE:
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root = CCM_GetRootMux(CCM, ccmRootCan1);
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CCM_GetRootDivider(CCM, ccmRootCan1, &pre, &post);
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break;
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case CAN2_BASE:
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root = CCM_GetRootMux(CCM, ccmRootCan2);
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CCM_GetRootDivider(CCM, ccmRootCan2, &pre, &post);
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break;
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default:
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return 0;
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}
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switch (root) {
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case ccmRootmuxCanOsc24m:
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hz = 24000000;
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break;
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case ccmRootmuxCanSysPllDiv4:
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hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2;
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break;
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case ccmRootmuxCanSysPllDiv1:
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hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG);
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break;
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default:
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return 0;
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}
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return hz / (pre + 1) / (post + 1);
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : get_I2C_clock_freq
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* Description : Get clock frequency applys to the I2C module
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*
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*END**************************************************************************/
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uint32_t get_i2c_clock_freq(I2C_Type *base)
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{
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uint32_t root;
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uint32_t hz;
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uint32_t pre, post;
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switch ((uint32_t)base) {
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case I2C1_BASE:
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root = CCM_GetRootMux(CCM, ccmRootI2c1);
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CCM_GetRootDivider(CCM, ccmRootI2c1, &pre, &post);
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break;
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case I2C2_BASE:
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root = CCM_GetRootMux(CCM, ccmRootI2c2);
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CCM_GetRootDivider(CCM, ccmRootI2c2, &pre, &post);
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break;
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case I2C3_BASE:
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root = CCM_GetRootMux(CCM, ccmRootI2c3);
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CCM_GetRootDivider(CCM, ccmRootI2c3, &pre, &post);
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break;
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case I2C4_BASE:
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root = CCM_GetRootMux(CCM, ccmRootI2c4);
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CCM_GetRootDivider(CCM, ccmRootI2c4, &pre, &post);
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break;
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default:
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return 0;
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}
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switch (root) {
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case ccmRootmuxI2cOsc24m:
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hz = 24000000;
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break;
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case ccmRootmuxI2cSysPllDiv4:
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hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2;
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break;
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default:
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return 0;
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}
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return hz / (pre + 1) / (post + 1);
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : get_uart_clock_freq
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* Description : Get clock frequency applys to the UART module
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*
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*END**************************************************************************/
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uint32_t get_uart_clock_freq(UART_Type *base)
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{
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uint32_t root;
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uint32_t hz;
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uint32_t pre, post;
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switch ((uint32_t)base) {
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case UART1_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart1);
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CCM_GetRootDivider(CCM, ccmRootUart1, &pre, &post);
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break;
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case UART2_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart2);
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CCM_GetRootDivider(CCM, ccmRootUart2, &pre, &post);
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break;
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case UART3_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart3);
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CCM_GetRootDivider(CCM, ccmRootUart3, &pre, &post);
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break;
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case UART4_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart4);
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CCM_GetRootDivider(CCM, ccmRootUart4, &pre, &post);
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break;
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case UART5_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart5);
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CCM_GetRootDivider(CCM, ccmRootUart5, &pre, &post);
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break;
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case UART6_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart6);
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CCM_GetRootDivider(CCM, ccmRootUart6, &pre, &post);
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break;
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case UART7_BASE:
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root = CCM_GetRootMux(CCM, ccmRootUart7);
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CCM_GetRootDivider(CCM, ccmRootUart7, &pre, &post);
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break;
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default:
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return 0;
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}
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switch (root) {
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case ccmRootmuxUartOsc24m:
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hz = 24000000;
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break;
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case ccmRootmuxUartSysPllDiv2:
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hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 1;
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break;
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case ccmRootmuxUartSysPllDiv1:
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hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG);
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break;
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default:
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return 0;
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}
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return hz / (pre + 1) / (post + 1);
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}
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/*******************************************************************************
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* EOF
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******************************************************************************/
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