stm32g0_clock.h

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/*
 * Copyright (c) 2022 Linaro Limited
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32G0_CLOCK_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32G0_CLOCK_H_
 
#include <zephyr/dt-bindings/clock/stm32_common_clocks.h>


#define STM32_CLOCK_BUS_IOP     0x034
#define STM32_CLOCK_BUS_AHB1    0x038
#define STM32_CLOCK_BUS_APB1    0x03c
#define STM32_CLOCK_BUS_APB1_2  0x040
 
#define STM32_PERIPH_BUS_MIN    STM32_CLOCK_BUS_IOP
#define STM32_PERIPH_BUS_MAX    STM32_CLOCK_BUS_APB1_2

/* RM0444, §5.4.21/22 Clock configuration register (RCC_CCIPRx) */

/* 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_TIMPCLK1      (STM32_SRC_PCLK + 1)
#define STM32_SRC_PLL_P         (STM32_SRC_TIMPCLK1 + 1)
#define STM32_SRC_PLL_Q         (STM32_SRC_PLL_P + 1)
#define STM32_SRC_PLL_R         (STM32_SRC_PLL_Q + 1)

#define CFGR_REG 0x08

#define CCIPR_REG               0x54
#define CCIPR2_REG              0x58

#define BDCR_REG                0x5C

#define MCO2_SEL(val)           STM32_DT_CLOCK_SELECT((val), 19, 16, CFGR_REG)
#define MCO2_PRE(val)           STM32_DT_CLOCK_SELECT((val), 23, 20, CFGR_REG)
#define MCO1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 27, 24, CFGR_REG)
#define MCO1_PRE(val)           STM32_DT_CLOCK_SELECT((val), 31, 28, CFGR_REG)
#define USART1_SEL(val)         STM32_DT_CLOCK_SELECT((val), 1, 0, CCIPR_REG)
#define USART2_SEL(val)         STM32_DT_CLOCK_SELECT((val), 3, 2, CCIPR_REG)
#define USART3_SEL(val)         STM32_DT_CLOCK_SELECT((val), 5, 4, CCIPR_REG)
#define CEC_SEL(val)            STM32_DT_CLOCK_SELECT((val), 6, 6, CCIPR_REG)
#define LPUART2_SEL(val)        STM32_DT_CLOCK_SELECT((val), 9, 8, CCIPR_REG)
#define LPUART1_SEL(val)        STM32_DT_CLOCK_SELECT((val), 11, 10, CCIPR_REG)
#define I2C1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 13, 12, CCIPR_REG)
#define I2C2_I2S1_SEL(val)      STM32_DT_CLOCK_SELECT((val), 15, 14, CCIPR_REG)
#define LPTIM1_SEL(val)         STM32_DT_CLOCK_SELECT((val), 19, 18, CCIPR_REG)
#define LPTIM2_SEL(val)         STM32_DT_CLOCK_SELECT((val), 21, 20, CCIPR_REG)
#define TIM1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 22, 22, CCIPR_REG)
#define TIM15_SEL(val)          STM32_DT_CLOCK_SELECT((val), 24, 24, CCIPR_REG)
#define RNG_SEL(val)            STM32_DT_CLOCK_SELECT((val), 27, 26, CCIPR_REG)
#define ADC_SEL(val)            STM32_DT_CLOCK_SELECT((val), 31, 30, CCIPR_REG)
#define I2S1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 1, 0, CCIPR2_REG)
#define I2S2_SEL(val)           STM32_DT_CLOCK_SELECT((val), 3, 2, CCIPR2_REG)
#define FDCAN_SEL(val)          STM32_DT_CLOCK_SELECT((val), 9, 8, CCIPR2_REG)
#define USB_SEL(val)            STM32_DT_CLOCK_SELECT((val), 13, 12, CCIPR2_REG)
#define RTC_SEL(val)            STM32_DT_CLOCK_SELECT((val), 9, 8, BDCR_REG)
 
/* MCO prescaler : division factor */
#define MCO_PRE_DIV_1   0
#define MCO_PRE_DIV_2   1
#define MCO_PRE_DIV_4   2
#define MCO_PRE_DIV_8   3
#define MCO_PRE_DIV_16  4
#define MCO_PRE_DIV_32  5
#define MCO_PRE_DIV_64  6
#define MCO_PRE_DIV_128 7
 
/* MCO clock output */
#define MCO_SEL_SYSCLK  1
#define MCO_SEL_HSI16   3
#define MCO_SEL_HSE     4
#define MCO_SEL_PLLRCLK 5
#define MCO_SEL_LSI     6
#define MCO_SEL_LSE     7

 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32G0_CLOCK_H_ */