stm32_clock_control.h

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/*
 * Copyright (c) 2016 Open-RnD Sp. z o.o.
 * Copyright (c) 2016 BayLibre, SAS
 * Copyright (c) 2017-2022 Linaro Limited.
 * Copyright (c) 2017 RnDity Sp. z o.o.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DRIVERS_CLOCK_CONTROL_STM32_CLOCK_CONTROL_H_
#define ZEPHYR_INCLUDE_DRIVERS_CLOCK_CONTROL_STM32_CLOCK_CONTROL_H_
 
#include <zephyr/drivers/clock_control.h>
 
#if defined(CONFIG_SOC_SERIES_STM32F0X)
#include <zephyr/dt-bindings/clock/stm32f0_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32F1X)
#include <zephyr/dt-bindings/clock/stm32f1_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32F3X)
#include <zephyr/dt-bindings/clock/stm32f3_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32F2X) || \
        defined(CONFIG_SOC_SERIES_STM32F4X) || \
        defined(CONFIG_SOC_SERIES_STM32F7X)
#include <zephyr/dt-bindings/clock/stm32f4_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32G0X)
#include <zephyr/dt-bindings/clock/stm32g0_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32G4X)
#include <zephyr/dt-bindings/clock/stm32g4_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32L0X)
#include <zephyr/dt-bindings/clock/stm32l0_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32L1X)
#include <zephyr/dt-bindings/clock/stm32l1_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32L4X) || \
        defined(CONFIG_SOC_SERIES_STM32L5X)
#include <zephyr/dt-bindings/clock/stm32l4_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32WBX)
#include <zephyr/dt-bindings/clock/stm32wb_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32WLX)
#include <zephyr/dt-bindings/clock/stm32wl_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32H7X)
#include <zephyr/dt-bindings/clock/stm32h7_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32U5X)
#include <zephyr/dt-bindings/clock/stm32u5_clock.h>
#else
#include <zephyr/dt-bindings/clock/stm32_clock.h>
#endif
 
#define STM32_CLOCK_CONTROL_NODE DT_NODELABEL(rcc)
 
#define STM32_AHB_PRESCALER     DT_PROP(DT_NODELABEL(rcc), ahb_prescaler)
#define STM32_APB1_PRESCALER    DT_PROP(DT_NODELABEL(rcc), apb1_prescaler)
#define STM32_APB2_PRESCALER    DT_PROP(DT_NODELABEL(rcc), apb2_prescaler)
#define STM32_APB3_PRESCALER    DT_PROP(DT_NODELABEL(rcc), apb3_prescaler)
#define STM32_AHB3_PRESCALER    DT_PROP(DT_NODELABEL(rcc), ahb3_prescaler)
#define STM32_AHB4_PRESCALER    DT_PROP(DT_NODELABEL(rcc), ahb4_prescaler)
#define STM32_CPU1_PRESCALER    DT_PROP(DT_NODELABEL(rcc), cpu1_prescaler)
#define STM32_CPU2_PRESCALER    DT_PROP(DT_NODELABEL(rcc), cpu2_prescaler)
 
#if DT_NODE_HAS_PROP(DT_NODELABEL(rcc), ahb_prescaler)
#define STM32_CORE_PRESCALER    STM32_AHB_PRESCALER
#elif DT_NODE_HAS_PROP(DT_NODELABEL(rcc), cpu1_prescaler)
#define STM32_CORE_PRESCALER    STM32_CPU1_PRESCALER
#endif
 
#if DT_NODE_HAS_PROP(DT_NODELABEL(rcc), ahb3_prescaler)
#define STM32_FLASH_PRESCALER   STM32_AHB3_PRESCALER
#elif DT_NODE_HAS_PROP(DT_NODELABEL(rcc), ahb4_prescaler)
#define STM32_FLASH_PRESCALER   STM32_AHB4_PRESCALER
#else
#define STM32_FLASH_PRESCALER   STM32_CORE_PRESCALER
#endif
 
#define STM32_D1CPRE    DT_PROP(DT_NODELABEL(rcc), d1cpre)
#define STM32_HPRE      DT_PROP(DT_NODELABEL(rcc), hpre)
#define STM32_D2PPRE1   DT_PROP(DT_NODELABEL(rcc), d2ppre1)
#define STM32_D2PPRE2   DT_PROP(DT_NODELABEL(rcc), d2ppre2)
#define STM32_D1PPRE    DT_PROP(DT_NODELABEL(rcc), d1ppre)
#define STM32_D3PPRE    DT_PROP(DT_NODELABEL(rcc), d3ppre)
 
#define DT_RCC_CLOCKS_CTRL      DT_CLOCKS_CTLR(DT_NODELABEL(rcc))
 
/* To enable use of IS_ENABLED utility macro, these symbols
 * should not be defined directly using DT_SAME_NODE.
 */
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(pll))
#define STM32_SYSCLK_SRC_PLL    1
#endif
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(clk_hsi))
#define STM32_SYSCLK_SRC_HSI    1
#endif
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(clk_hse))
#define STM32_SYSCLK_SRC_HSE    1
#endif
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(clk_msi))
#define STM32_SYSCLK_SRC_MSI    1
#endif
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(clk_msis))
#define STM32_SYSCLK_SRC_MSIS   1
#endif
#if DT_SAME_NODE(DT_RCC_CLOCKS_CTRL, DT_NODELABEL(clk_csi))
#define STM32_SYSCLK_SRC_CSI    1
#endif
 
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f2_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f4_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f7_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32g0_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32g4_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32l4_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32u5_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32wb_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32h7_pll_clock, okay)
#define STM32_PLL_ENABLED       1
#define STM32_PLL_M_DIVISOR     DT_PROP(DT_NODELABEL(pll), div_m)
#define STM32_PLL_N_MULTIPLIER  DT_PROP(DT_NODELABEL(pll), mul_n)
#define STM32_PLL_P_ENABLED     DT_NODE_HAS_PROP(DT_NODELABEL(pll), div_p)
#define STM32_PLL_P_DIVISOR     DT_PROP_OR(DT_NODELABEL(pll), div_p, 1)
#define STM32_PLL_Q_ENABLED     DT_NODE_HAS_PROP(DT_NODELABEL(pll), div_q)
#define STM32_PLL_Q_DIVISOR     DT_PROP_OR(DT_NODELABEL(pll), div_q, 1)
#define STM32_PLL_R_ENABLED     DT_NODE_HAS_PROP(DT_NODELABEL(pll), div_r)
#define STM32_PLL_R_DIVISOR     DT_PROP_OR(DT_NODELABEL(pll), div_r, 1)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll2), st_stm32u5_pll_clock, okay)
#define STM32_PLL2_ENABLED      1
#define STM32_PLL2_M_DIVISOR    DT_PROP(DT_NODELABEL(pll2), div_m)
#define STM32_PLL2_N_MULTIPLIER DT_PROP(DT_NODELABEL(pll2), mul_n)
#define STM32_PLL2_P_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll2), div_p)
#define STM32_PLL2_P_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll2), div_p, 1)
#define STM32_PLL2_Q_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll2), div_q)
#define STM32_PLL2_Q_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll2), div_q, 1)
#define STM32_PLL2_R_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll2), div_r)
#define STM32_PLL2_R_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll2), div_r, 1)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll3), st_stm32h7_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll3), st_stm32u5_pll_clock, okay)
#define STM32_PLL3_ENABLED      1
#define STM32_PLL3_M_DIVISOR    DT_PROP(DT_NODELABEL(pll3), div_m)
#define STM32_PLL3_N_MULTIPLIER DT_PROP(DT_NODELABEL(pll3), mul_n)
#define STM32_PLL3_P_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll3), div_p)
#define STM32_PLL3_P_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll3), div_p, 1)
#define STM32_PLL3_Q_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll3), div_q)
#define STM32_PLL3_Q_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll3), div_q, 1)
#define STM32_PLL3_R_ENABLED    DT_NODE_HAS_PROP(DT_NODELABEL(pll3), div_r)
#define STM32_PLL3_R_DIVISOR    DT_PROP_OR(DT_NODELABEL(pll3), div_r, 1)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f1_pll_clock, okay)
#define STM32_PLL_ENABLED       1
#define STM32_PLL_XTPRE         DT_PROP(DT_NODELABEL(pll), xtpre)
#define STM32_PLL_MULTIPLIER    DT_PROP(DT_NODELABEL(pll), mul)
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f0_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f100_pll_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32f105_pll_clock, okay)
#define STM32_PLL_ENABLED       1
#define STM32_PLL_MULTIPLIER    DT_PROP(DT_NODELABEL(pll), mul)
#define STM32_PLL_PREDIV        DT_PROP(DT_NODELABEL(pll), prediv)
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll), st_stm32l0_pll_clock, okay)
#define STM32_PLL_ENABLED       1
#define STM32_PLL_DIVISOR       DT_PROP(DT_NODELABEL(pll), div)
#define STM32_PLL_MULTIPLIER    DT_PROP(DT_NODELABEL(pll), mul)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(pll2), st_stm32f105_pll2_clock, okay)
#define STM32_PLL2_ENABLED      1
#define STM32_PLL2_MULTIPLIER   DT_PROP(DT_NODELABEL(pll2), mul)
#define STM32_PLL2_PREDIV       DT_PROP(DT_NODELABEL(pll2), prediv)
#endif
 
#if DT_NODE_HAS_STATUS(DT_NODELABEL(pll), okay) && \
        DT_NODE_HAS_PROP(DT_NODELABEL(pll), clocks)
#define DT_PLL_CLOCKS_CTRL      DT_CLOCKS_CTLR(DT_NODELABEL(pll))
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(clk_msi))
#define STM32_PLL_SRC_MSI       1
#endif
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(clk_msis))
#define STM32_PLL_SRC_MSIS      1
#endif
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(clk_hsi))
#define STM32_PLL_SRC_HSI       1
#endif
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(clk_csi))
#define STM32_PLL_SRC_CSI       1
#endif
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(clk_hse))
#define STM32_PLL_SRC_HSE       1
#endif
#if DT_SAME_NODE(DT_PLL_CLOCKS_CTRL, DT_NODELABEL(pll2))
#define STM32_PLL_SRC_PLL2      1
#endif
 
#endif
 
#if DT_NODE_HAS_STATUS(DT_NODELABEL(pll2), okay) && \
        DT_NODE_HAS_PROP(DT_NODELABEL(pll2), clocks)
#define DT_PLL2_CLOCKS_CTRL     DT_CLOCKS_CTLR(DT_NODELABEL(pll2))
#if DT_SAME_NODE(DT_PLL2_CLOCKS_CTRL, DT_NODELABEL(clk_msis))
#define STM32_PLL2_SRC_MSIS     1
#endif
#if DT_SAME_NODE(DT_PLL2_CLOCKS_CTRL, DT_NODELABEL(clk_hsi))
#define STM32_PLL2_SRC_HSI      1
#endif
#if DT_SAME_NODE(DT_PLL2_CLOCKS_CTRL, DT_NODELABEL(clk_hse))
#define STM32_PLL2_SRC_HSE      1
#endif
 
#endif
 
#if DT_NODE_HAS_STATUS(DT_NODELABEL(pll3), okay) && \
        DT_NODE_HAS_PROP(DT_NODELABEL(pll3), clocks)
#define DT_PLL3_CLOCKS_CTRL     DT_CLOCKS_CTLR(DT_NODELABEL(pll3))
#if DT_SAME_NODE(DT_PLL3_CLOCKS_CTRL, DT_NODELABEL(clk_msis))
#define STM32_PLL3_SRC_MSIS     1
#endif
#if DT_SAME_NODE(DT_PLL3_CLOCKS_CTRL, DT_NODELABEL(clk_hsi))
#define STM32_PLL3_SRC_HSI      1
#endif
#if DT_SAME_NODE(DT_PLL3_CLOCKS_CTRL, DT_NODELABEL(clk_hse))
#define STM32_PLL3_SRC_HSE      1
#endif
 
#endif
 
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_lse), fixed_clock, okay)
#define STM32_LSE_ENABLED       1
#define STM32_LSE_FREQ          DT_PROP(DT_NODELABEL(clk_lse), clock_frequency)
#define STM32_LSE_DRIVING       0
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_lse), st_stm32_lse_clock, okay)
#define STM32_LSE_ENABLED       1
#define STM32_LSE_FREQ          DT_PROP(DT_NODELABEL(clk_lse), clock_frequency)
#define STM32_LSE_DRIVING       DT_PROP(DT_NODELABEL(clk_lse), driving_capability)
#else
#define STM32_LSE_ENABLED       0
#define STM32_LSE_FREQ          0
#define STM32_LSE_DRIVING       0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_msi), st_stm32_msi_clock, okay) || \
        DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_msi), st_stm32l0_msi_clock, okay)
#define STM32_MSI_ENABLED       1
#define STM32_MSI_RANGE         DT_PROP(DT_NODELABEL(clk_msi), msi_range)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_msi), st_stm32_msi_clock, okay)
#define STM32_MSI_ENABLED       1
#define STM32_MSI_PLL_MODE      DT_PROP(DT_NODELABEL(clk_msi), msi_pll_mode)
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_msis), st_stm32u5_msi_clock, okay)
#define STM32_MSIS_ENABLED      1
#define STM32_MSIS_RANGE        DT_PROP(DT_NODELABEL(clk_msis), msi_range)
#define STM32_MSIS_PLL_MODE     DT_PROP(DT_NODELABEL(clk_msis), msi_pll_mode)
#else
#define STM32_MSIS_ENABLED      0
#define STM32_MSIS_RANGE        0
#define STM32_MSIS_PLL_MODE     0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_msik), st_stm32u5_msi_clock, okay)
#define STM32_MSIK_ENABLED      1
#define STM32_MSIK_RANGE        DT_PROP(DT_NODELABEL(clk_msik), msi_range)
#define STM32_MSIK_PLL_MODE     DT_PROP(DT_NODELABEL(clk_msik), msi_pll_mode)
#else
#define STM32_MSIK_ENABLED      0
#define STM32_MSIK_RANGE        0
#define STM32_MSIK_PLL_MODE     0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_csi), fixed_clock, okay)
#define STM32_CSI_ENABLED       1
#define STM32_CSI_FREQ          DT_PROP(DT_NODELABEL(clk_csi), clock_frequency)
#else
#define STM32_CSI_FREQ          0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_lsi), fixed_clock, okay)
#define STM32_LSI_ENABLED       1
#define STM32_LSI_FREQ          DT_PROP(DT_NODELABEL(clk_lsi), clock_frequency)
#else
#define STM32_LSI_FREQ          0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hsi), fixed_clock, okay)
#define STM32_HSI_DIV_ENABLED   0
#define STM32_HSI_ENABLED       1
#define STM32_HSI_FREQ          DT_PROP(DT_NODELABEL(clk_hsi), clock_frequency)
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hsi), st_stm32h7_hsi_clock, okay) \
        || DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hsi), st_stm32g0_hsi_clock, okay)
#define STM32_HSI_DIV_ENABLED   1
#define STM32_HSI_ENABLED       1
#define STM32_HSI_DIVISOR       DT_PROP(DT_NODELABEL(clk_hsi), hsi_div)
#define STM32_HSI_FREQ          DT_PROP(DT_NODELABEL(clk_hsi), clock_frequency)
#else
#define STM32_HSI_DIV_ENABLED   0
#define STM32_HSI_DIVISOR       1
#define STM32_HSI_FREQ          0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hse), fixed_clock, okay)
#define STM32_HSE_ENABLED       1
#define STM32_HSE_FREQ          DT_PROP(DT_NODELABEL(clk_hse), clock_frequency)
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hse), st_stm32_hse_clock, okay)
#define STM32_HSE_ENABLED       1
#define STM32_HSE_BYPASS        DT_PROP(DT_NODELABEL(clk_hse), hse_bypass)
#define STM32_HSE_FREQ          DT_PROP(DT_NODELABEL(clk_hse), clock_frequency)
#elif DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(clk_hse), st_stm32wl_hse_clock, okay)
#define STM32_HSE_ENABLED       1
#define STM32_HSE_TCXO          DT_PROP(DT_NODELABEL(clk_hse), hse_tcxo)
#define STM32_HSE_DIV2          DT_PROP(DT_NODELABEL(clk_hse), hse_div2)
#define STM32_HSE_FREQ          DT_PROP(DT_NODELABEL(clk_hse), clock_frequency)
#else
#define STM32_HSE_FREQ          0
#endif
 
#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(perck), st_stm32_clock_mux, okay)
#define STM32_CKPER_ENABLED     1
#endif
 
struct stm32_pclken {
        uint32_t bus;
        uint32_t enr;
};
 
#define STM32_CLOCK_INFO(clk_index, node_id)                            \
        {                                                               \
        .enr = DT_CLOCKS_CELL_BY_IDX(node_id, clk_index, bits),         \
        .bus = DT_CLOCKS_CELL_BY_IDX(node_id, clk_index, bus)           \
        }
#define STM32_DT_CLOCKS(node_id)                                        \
        {                                                               \
                LISTIFY(DT_NUM_CLOCKS(node_id),                         \
                        STM32_CLOCK_INFO, (,), node_id)                 \
        }
 
#define STM32_DT_INST_CLOCKS(inst)                                      \
        STM32_DT_CLOCKS(DT_DRV_INST(inst))
 
#define STM32_DOMAIN_CLOCK_INST_SUPPORT(inst) DT_INST_CLOCKS_HAS_IDX(inst, 1) ||
#define STM32_DT_INST_DEV_DOMAIN_CLOCK_SUPPORT                          \
                (DT_INST_FOREACH_STATUS_OKAY(STM32_DOMAIN_CLOCK_INST_SUPPORT) 0)
 
#define STM32_DOMAIN_CLOCK_SUPPORT(id) DT_CLOCKS_HAS_IDX(DT_NODELABEL(id), 1) ||
#define STM32_DT_DEV_DOMAIN_CLOCK_SUPPORT                                       \
                (DT_FOREACH_STATUS_OKAY(STM32_DOMAIN_CLOCK_SUPPORT) 0)
 
#define STM32_CLOCK_REG_GET(clock) \
        (((clock) >> STM32_CLOCK_REG_SHIFT) & STM32_CLOCK_REG_MASK)
 
#define STM32_CLOCK_SHIFT_GET(clock) \
        (((clock) >> STM32_CLOCK_SHIFT_SHIFT) & STM32_CLOCK_SHIFT_MASK)
 
#define STM32_CLOCK_MASK_GET(clock) \
        (((clock) >> STM32_CLOCK_MASK_SHIFT) & STM32_CLOCK_MASK_MASK)
 
#define STM32_CLOCK_VAL_GET(clock) \
        (((clock) >> STM32_CLOCK_VAL_SHIFT) & STM32_CLOCK_VAL_MASK)
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_CLOCK_CONTROL_STM32_CLOCK_CONTROL_H_ */