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105 lines
2.2 KiB
105 lines
2.2 KiB
/* |
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* Copyright (c) 2021, NXP |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define DT_DRV_COMPAT nxp_imx_ccm_rev2 |
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#include <errno.h> |
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#include <soc.h> |
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#include <drivers/clock_control.h> |
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#include <dt-bindings/clock/imx_ccm_rev2.h> |
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#include <fsl_clock.h> |
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#define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL |
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#include <logging/log.h> |
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LOG_MODULE_REGISTER(clock_control); |
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static int mcux_ccm_on(const struct device *dev, |
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clock_control_subsys_t sub_system) |
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{ |
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return 0; |
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} |
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static int mcux_ccm_off(const struct device *dev, |
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clock_control_subsys_t sub_system) |
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{ |
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return 0; |
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} |
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static int mcux_ccm_get_subsys_rate(const struct device *dev, |
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clock_control_subsys_t sub_system, |
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uint32_t *rate) |
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{ |
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uint32_t clock_name = (uint32_t) sub_system; |
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uint32_t clock_root, peripheral, instance; |
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peripheral = (clock_name & IMX_CCM_PERIPHERAL_MASK); |
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instance = (clock_name & IMX_CCM_INSTANCE_MASK); |
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switch (peripheral) { |
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#ifdef CONFIG_I2C_MCUX_LPI2C |
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case IMX_CCM_LPI2C1_CLK: |
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clock_root = kCLOCK_Root_Lpi2c1 + instance; |
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break; |
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#endif |
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#ifdef CONFIG_SPI_MCUX_LPSPI |
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case IMX_CCM_LPSPI1_CLK: |
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clock_root = kCLOCK_Root_Lpspi1 + instance; |
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break; |
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#endif |
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#ifdef CONFIG_UART_MCUX_LPUART |
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case IMX_CCM_LPUART1_CLK: |
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clock_root = kCLOCK_Root_Lpuart1 + instance; |
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break; |
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#endif |
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#if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC |
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case IMX_CCM_USDHC1_CLK: |
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clock_root = kCLOCK_Root_Usdhc1 + instance; |
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break; |
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#endif |
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#ifdef CONFIG_DMA_MCUX_EDMA |
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case IMX_CCM_EDMA_CLK: |
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clock_root = kCLOCK_Root_Edma + instance; |
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break; |
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#endif |
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#ifdef CONFIG_CAN_MCUX_FLEXCAN |
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case IMX_CCM_CAN1_CLK: |
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clock_root = kCLOCK_Root_Can1 + instance; |
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break; |
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#endif |
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#ifdef CONFIG_COUNTER_MCUX_GPT |
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case IMX_CCM_GPT_CLK: |
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clock_root = kCLOCK_Root_Gpt1 + instance; |
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break; |
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#endif |
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default: |
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return -EINVAL; |
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} |
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*rate = CLOCK_GetRootClockFreq(clock_root); |
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return 0; |
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} |
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static int mcux_ccm_init(const struct device *dev) |
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{ |
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return 0; |
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} |
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static const struct clock_control_driver_api mcux_ccm_driver_api = { |
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.on = mcux_ccm_on, |
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.off = mcux_ccm_off, |
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.get_rate = mcux_ccm_get_subsys_rate, |
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}; |
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DEVICE_DT_INST_DEFINE(0, |
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&mcux_ccm_init, |
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NULL, |
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NULL, NULL, |
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PRE_KERNEL_1, CONFIG_CLOCK_CONTROL_INIT_PRIORITY, |
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&mcux_ccm_driver_api);
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