112 lines
2.3 KiB
C
112 lines
2.3 KiB
C
/*
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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_Bus + instance;
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break;
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#endif
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#ifdef CONFIG_PWM_MCUX
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case IMX_CCM_PWM_CLK:
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clock_root = kCLOCK_Root_Bus;
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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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