stm32l0_clock.h

Go to the documentation of this file.

/*
 * Copyright (c) 2022 Linaro Limited
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L0_CLOCK_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L0_CLOCK_H_
 
#include "stm32_common_clocks.h"

#define STM32_CLOCK_BUS_IOP     0x02c
#define STM32_CLOCK_BUS_AHB1    0x030
#define STM32_CLOCK_BUS_APB2    0x034
#define STM32_CLOCK_BUS_APB1    0x038
 
#define STM32_PERIPH_BUS_MIN    STM32_CLOCK_BUS_IOP
#define STM32_PERIPH_BUS_MAX    STM32_CLOCK_BUS_APB1

/* RM0367, §7.3.20 Clock configuration register (RCC_CCIPR) */

/* defined in stm32_common_clocks.h */

/* Low speed clocks defined in stm32_common_clocks.h */
#define STM32_SRC_HSE           (STM32_SRC_LSI + 1)
#define STM32_SRC_HSI           (STM32_SRC_HSE + 1)
#define STM32_SRC_HSI48         (STM32_SRC_HSI + 1)
#define STM32_SRC_PCLK          (STM32_SRC_HSI48 + 1)

#define CCIPR_REG               0x4C

#define CSR_REG         0x50

#define USART1_SEL(val)         STM32_DT_CLOCK_SELECT((val), 3, 0, CCIPR_REG)
#define USART2_SEL(val)         STM32_DT_CLOCK_SELECT((val), 3, 2, CCIPR_REG)
#define LPUART1_SEL(val)        STM32_DT_CLOCK_SELECT((val), 3, 10, CCIPR_REG)
#define I2C1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 3, 12, CCIPR_REG)
#define I2C3_SEL(val)           STM32_DT_CLOCK_SELECT((val), 3, 16, CCIPR_REG)
#define LPTIM1_SEL(val)         STM32_DT_CLOCK_SELECT((val), 3, 18, CCIPR_REG)
#define HSI48_SEL(val)          STM32_DT_CLOCK_SELECT((val), 1, 26, CCIPR_REG)
#define RTC_SEL(val)            STM32_DT_CLOCK_SELECT((val), 3, 16, CSR_REG)
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L0_CLOCK_H_ */