stm32u0_clock.h

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/*
 * Copyright (c) 2024 STMicroelectronics
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32U0_CLOCK_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32U0_CLOCK_H_
 
#include "stm32_common_clocks.h"
 
#define STM32_CLOCK_BUS_IOP     0x4C
#define STM32_CLOCK_BUS_AHB1    0x48
#define STM32_CLOCK_BUS_APB1    0x58
#define STM32_CLOCK_BUS_APB1_2  0x60
 
#define STM32_PERIPH_BUS_MIN    STM32_CLOCK_BUS_IOP
#define STM32_PERIPH_BUS_MAX    STM32_CLOCK_BUS_APB1_2
 
/* RM0503, clock configuration register (RCC_CCIPR) */
 
/* defined in stm32_common_clocks.h */
 
/* Low speed clocks defined in stm32_common_clocks.h */
#define STM32_SRC_HSI           (STM32_SRC_LSI + 1)
#define STM32_SRC_HSI48         (STM32_SRC_HSI + 1)
#define STM32_SRC_MSI           (STM32_SRC_HSI48 + 1)
#define STM32_SRC_HSE           (STM32_SRC_MSI + 1)
#define STM32_SRC_PCLK          (STM32_SRC_HSE + 1)
#define STM32_SRC_PLL_P         (STM32_SRC_PCLK + 1)
#define STM32_SRC_PLL_Q         (STM32_SRC_PLL_P + 1)
#define STM32_SRC_PLL_R         (STM32_SRC_PLL_Q + 1)
 
#define STM32_CLOCK_REG_MASK    0xFFU
#define STM32_CLOCK_REG_SHIFT   0U
#define STM32_CLOCK_SHIFT_MASK  0x1FU
#define STM32_CLOCK_SHIFT_SHIFT 8U
#define STM32_CLOCK_MASK_MASK   0x7U
#define STM32_CLOCK_MASK_SHIFT  13U
#define STM32_CLOCK_VAL_MASK    0x7U
#define STM32_CLOCK_VAL_SHIFT   16U
 
#define STM32_CLOCK(val, mask, shift, reg)                                      \
        ((((reg) & STM32_CLOCK_REG_MASK) << STM32_CLOCK_REG_SHIFT) |            \
         (((shift) & STM32_CLOCK_SHIFT_MASK) << STM32_CLOCK_SHIFT_SHIFT) |      \
         (((mask) & STM32_CLOCK_MASK_MASK) << STM32_CLOCK_MASK_SHIFT) |         \
         (((val) & STM32_CLOCK_VAL_MASK) << STM32_CLOCK_VAL_SHIFT))
 
#define CCIPR_REG               0x88
 
#define BDCR_REG                0x90
 
#define USART1_SEL(val)         STM32_CLOCK(val, 3, 0, CCIPR_REG)
#define USART2_SEL(val)         STM32_CLOCK(val, 3, 2, CCIPR_REG)
#define LPUART3_SEL(val)        STM32_CLOCK(val, 3, 6, CCIPR_REG)
#define LPUART2_SEL(val)        STM32_CLOCK(val, 3, 8, CCIPR_REG)
#define LPUART1_SEL(val)        STM32_CLOCK(val, 3, 10, CCIPR_REG)
#define I2C1_SEL(val)           STM32_CLOCK(val, 3, 12, CCIPR_REG)
#define I2C3_SEL(val)           STM32_CLOCK(val, 3, 16, CCIPR_REG)
#define LPTIM1_SEL(val)         STM32_CLOCK(val, 3, 18, CCIPR_REG)
#define LPTIM2_SEL(val)         STM32_CLOCK(val, 3, 20, CCIPR_REG)
#define LPTIM3_SEL(val)         STM32_CLOCK(val, 3, 22, CCIPR_REG)
#define TIM1_SEL(val)           STM32_CLOCK(val, 1, 24, CCIPR_REG)
#define TIM15_SEL(val)          STM32_CLOCK(val, 1, 25, CCIPR_REG)
#define CLK48_SEL(val)          STM32_CLOCK(val, 3, 26, CCIPR_REG)
#define ADC_SEL(val)            STM32_CLOCK(val, 3, 28, CCIPR_REG)
#define RTC_SEL(val)            STM32_CLOCK(val, 3, 8, CSR_REG)
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32U0_CLOCK_H_ */