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Diffstat (limited to 'examples/imx7_colibri_m4/clock_freq.c')
| -rw-r--r-- | examples/imx7_colibri_m4/clock_freq.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/examples/imx7_colibri_m4/clock_freq.c b/examples/imx7_colibri_m4/clock_freq.c new file mode 100644 index 0000000..3c5715b --- /dev/null +++ b/examples/imx7_colibri_m4/clock_freq.c @@ -0,0 +1,252 @@ +/* + * Copyright (c) 2015, 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. + */ + +#include "clock_freq.h" +#include "ccm_imx7d.h" +#include "ccm_analog_imx7d.h" + +/*FUNCTION********************************************************************** + * + * Function Name : get_gpt_clock_freq + * Description : Get clock frequency applys to the GPT module + * + *END**************************************************************************/ +uint32_t get_gpt_clock_freq(GPT_Type* base) +{ + uint32_t root; + uint32_t hz; + uint32_t pre, post; + + switch((uint32_t)base) + { + case GPT3_BASE: + root = CCM_GetRootMux(CCM, ccmRootGpt3); + CCM_GetRootDivider(CCM, ccmRootGpt3, &pre, &post); + break; + case GPT4_BASE: + root = CCM_GetRootMux(CCM, ccmRootGpt4); + CCM_GetRootDivider(CCM, ccmRootGpt4, &pre, &post); + break; + default: + return 0; + } + + switch(root) + { + case ccmRootmuxGptOsc24m: + hz = 24000000; + break; + case ccmRootmuxGptSysPllPfd0: + hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd0Frac); + break; + default: + return 0; + } + + return hz / (pre + 1) / (post + 1); +} + +/*FUNCTION********************************************************************** + * + * Function Name : get_ecspi_clock_freq + * Description : Get clock frequency applys to the ECSPI module + * + *END**************************************************************************/ +uint32_t get_ecspi_clock_freq(ECSPI_Type* base) +{ + uint32_t root; + uint32_t hz; + uint32_t pre, post; + + switch((uint32_t)base) + { + case ECSPI1_BASE: + root = CCM_GetRootMux(CCM, ccmRootEcspi1); + CCM_GetRootDivider(CCM, ccmRootEcspi1, &pre, &post); + break; + case ECSPI2_BASE: + root = CCM_GetRootMux(CCM, ccmRootEcspi2); + CCM_GetRootDivider(CCM, ccmRootEcspi2, &pre, &post); + break; + default: + return 0; + } + + switch(root) + { + case ccmRootmuxEcspiOsc24m: + hz = 24000000; + break; + case ccmRootmuxEcspiSysPllPfd4: + hz = CCM_ANALOG_GetPfdFreq(CCM_ANALOG, ccmAnalogPfd4Frac); + break; + default: + return 0; + } + + return hz / (pre + 1) / (post + 1); +} + +/*FUNCTION********************************************************************** + * + * Function Name : get_flexcan_clock_freq + * Description : Get clock frequency applys to the FLEXCAN module + * + *END**************************************************************************/ +uint32_t get_flexcan_clock_freq(CAN_Type* base) +{ + uint32_t root; + uint32_t hz; + uint32_t pre, post; + + switch((uint32_t)base) + { + case CAN1_BASE: + root = CCM_GetRootMux(CCM, ccmRootCan1); + CCM_GetRootDivider(CCM, ccmRootCan1, &pre, &post); + break; + case CAN2_BASE: + root = CCM_GetRootMux(CCM, ccmRootCan2); + CCM_GetRootDivider(CCM, ccmRootCan2, &pre, &post); + break; + default: + return 0; + } + + switch(root) + { + case ccmRootmuxCanOsc24m: + hz = 24000000; + break; + case ccmRootmuxCanSysPllDiv4: + hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2; + break; + case ccmRootmuxCanSysPllDiv1: + hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG); + break; + default: + return 0; + } + + return hz / (pre + 1) / (post + 1); +} + +/*FUNCTION********************************************************************** + * + * Function Name : get_I2C_clock_freq + * Description : Get clock frequency applys to the I2C module + * + *END**************************************************************************/ +uint32_t get_i2c_clock_freq(I2C_Type* base) +{ + uint32_t root; + uint32_t hz; + uint32_t pre, post; + + switch((uint32_t)base) + { + case I2C1_BASE: + root = CCM_GetRootMux(CCM, ccmRootI2c1); + CCM_GetRootDivider(CCM, ccmRootI2c1, &pre, &post); + break; + case I2C2_BASE: + root = CCM_GetRootMux(CCM, ccmRootI2c2); + CCM_GetRootDivider(CCM, ccmRootI2c2, &pre, &post); + break; + case I2C3_BASE: + root = CCM_GetRootMux(CCM, ccmRootI2c3); + CCM_GetRootDivider(CCM, ccmRootI2c3, &pre, &post); + break; + case I2C4_BASE: + root = CCM_GetRootMux(CCM, ccmRootI2c4); + CCM_GetRootDivider(CCM, ccmRootI2c4, &pre, &post); + break; + default: + return 0; + } + + switch(root) + { + case ccmRootmuxI2cOsc24m: + hz = 24000000; + break; + case ccmRootmuxI2cSysPllDiv4: + hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 2; + break; + default: + return 0; + } + + return hz / (pre + 1) / (post + 1); +} + +/*FUNCTION********************************************************************** + * + * Function Name : get_uart_clock_freq + * Description : Get clock frequency applys to the UART module + * + *END**************************************************************************/ +uint32_t get_uart_clock_freq(UART_Type* base) +{ + uint32_t root; + uint32_t hz; + uint32_t pre, post; + + switch((uint32_t)base) + { + case UART2_BASE: + root = CCM_GetRootMux(CCM, ccmRootUart2); + CCM_GetRootDivider(CCM, ccmRootUart2, &pre, &post); + break; + default: + return 0; + } + + switch(root) + { + case ccmRootmuxUartOsc24m: + hz = 24000000; + break; + case ccmRootmuxUartSysPllDiv2: + hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG) >> 1; + break; + case ccmRootmuxUartSysPllDiv1: + hz = CCM_ANALOG_GetSysPllFreq(CCM_ANALOG); + break; + default: + return 0; + } + + return hz / (pre + 1) / (post + 1); +} + +/******************************************************************************* + * EOF + ******************************************************************************/ |