| /* |
| * Copyright (c) 2017, NXP |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| #include <errno.h> |
| #include <soc.h> |
| #include <clock_control.h> |
| #include <dt-bindings/clock/imx_ccm.h> |
| #include <fsl_clock.h> |
| |
| #define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL |
| #include <logging/log.h> |
| LOG_MODULE_REGISTER(clock_control); |
| |
| static const clock_name_t lpspi_clocks[] = { |
| kCLOCK_Usb1PllPfd1Clk, |
| kCLOCK_Usb1PllPfd0Clk, |
| kCLOCK_SysPllClk, |
| kCLOCK_SysPllPfd2Clk, |
| }; |
| |
| static int mcux_ccm_on(struct device *dev, |
| clock_control_subsys_t sub_system) |
| { |
| return 0; |
| } |
| |
| static int mcux_ccm_off(struct device *dev, |
| clock_control_subsys_t sub_system) |
| { |
| return 0; |
| } |
| |
| static int mcux_ccm_get_subsys_rate(struct device *dev, |
| clock_control_subsys_t sub_system, |
| u32_t *rate) |
| { |
| u32_t clock_name = (u32_t) sub_system; |
| |
| switch (clock_name) { |
| |
| #ifdef CONFIG_I2C_MCUX_LPI2C |
| case IMX_CCM_LPI2C_CLK: |
| if (CLOCK_GetMux(kCLOCK_Lpi2cMux) == 0) { |
| *rate = CLOCK_GetPllFreq(kCLOCK_PllUsb1) / 8 |
| / (CLOCK_GetDiv(kCLOCK_Lpi2cDiv) + 1); |
| } else { |
| *rate = CLOCK_GetOscFreq() |
| / (CLOCK_GetDiv(kCLOCK_Lpi2cDiv) + 1); |
| } |
| |
| break; |
| #endif |
| |
| case IMX_CCM_LPSPI_CLK: |
| { |
| u32_t lpspi_mux = CLOCK_GetMux(kCLOCK_LpspiMux); |
| clock_name_t lpspi_clock = lpspi_clocks[lpspi_mux]; |
| |
| *rate = CLOCK_GetFreq(lpspi_clock) |
| / (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1); |
| break; |
| } |
| |
| case IMX_CCM_LPUART_CLK: |
| if (CLOCK_GetMux(kCLOCK_UartMux) == 0) { |
| *rate = CLOCK_GetPllFreq(kCLOCK_PllUsb1) / 6 |
| / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1); |
| } else { |
| *rate = CLOCK_GetOscFreq() |
| / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1); |
| } |
| |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int mcux_ccm_init(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static const struct clock_control_driver_api mcux_ccm_driver_api = { |
| .on = mcux_ccm_on, |
| .off = mcux_ccm_off, |
| .get_rate = mcux_ccm_get_subsys_rate, |
| }; |
| |
| DEVICE_AND_API_INIT(mcux_ccm, DT_MCUX_CCM_NAME, |
| &mcux_ccm_init, |
| NULL, NULL, |
| PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, |
| &mcux_ccm_driver_api); |