1 /* 2 * Copyright (c) 2022 Linaro Limited 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L4_CLOCK_H_ 7 #define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L4_CLOCK_H_ 8 9 #include "stm32_common_clocks.h" 10 11 /** Bus clocks */ 12 #define STM32_CLOCK_BUS_AHB1 0x048 13 #define STM32_CLOCK_BUS_AHB2 0x04c 14 #define STM32_CLOCK_BUS_AHB3 0x050 15 #define STM32_CLOCK_BUS_APB1 0x058 16 #define STM32_CLOCK_BUS_APB1_2 0x05c 17 #define STM32_CLOCK_BUS_APB2 0x060 18 19 #define STM32_PERIPH_BUS_MIN STM32_CLOCK_BUS_AHB1 20 #define STM32_PERIPH_BUS_MAX STM32_CLOCK_BUS_APB2 21 22 /** Domain clocks */ 23 /* RM0351/RM0432/RM0438, § Clock configuration register (RCC_CCIPRx) */ 24 25 /** System clock */ 26 /* defined in stm32_common_clocks.h */ 27 /** Fixed clocks */ 28 /* Low speed clocks defined in stm32_common_clocks.h */ 29 #define STM32_SRC_HSI (STM32_SRC_LSI + 1) 30 #define STM32_SRC_HSI48 (STM32_SRC_HSI + 1) 31 #define STM32_SRC_MSI (STM32_SRC_HSI48 + 1) 32 /** Bus clock */ 33 #define STM32_SRC_PCLK (STM32_SRC_MSI + 1) 34 /** PLL clock outputs */ 35 #define STM32_SRC_PLL_P (STM32_SRC_PCLK + 1) 36 #define STM32_SRC_PLL_Q (STM32_SRC_PLL_P + 1) 37 #define STM32_SRC_PLL_R (STM32_SRC_PLL_Q + 1) 38 /* TODO: PLLSAI clocks */ 39 40 #define STM32_CLOCK_REG_MASK 0xFFU 41 #define STM32_CLOCK_REG_SHIFT 0U 42 #define STM32_CLOCK_SHIFT_MASK 0x1FU 43 #define STM32_CLOCK_SHIFT_SHIFT 8U 44 #define STM32_CLOCK_MASK_MASK 0x7U 45 #define STM32_CLOCK_MASK_SHIFT 13U 46 #define STM32_CLOCK_VAL_MASK 0x7U 47 #define STM32_CLOCK_VAL_SHIFT 16U 48 49 /** 50 * @brief STM32 clock configuration bit field. 51 * 52 * - reg (1/2/3) [ 0 : 7 ] 53 * - shift (0..31) [ 8 : 12 ] 54 * - mask (0x1, 0x3, 0x7) [ 13 : 15 ] 55 * - val (0..7) [ 16 : 18 ] 56 * 57 * @param reg RCC_CCIPRx register offset 58 * @param shift Position within RCC_CCIPRx. 59 * @param mask Mask for the RCC_CCIPRx field. 60 * @param val Clock value (0, 1, ... 7). 61 */ 62 #define STM32_DOMAIN_CLOCK(val, mask, shift, reg) \ 63 ((((reg) & STM32_CLOCK_REG_MASK) << STM32_CLOCK_REG_SHIFT) | \ 64 (((shift) & STM32_CLOCK_SHIFT_MASK) << STM32_CLOCK_SHIFT_SHIFT) | \ 65 (((mask) & STM32_CLOCK_MASK_MASK) << STM32_CLOCK_MASK_SHIFT) | \ 66 (((val) & STM32_CLOCK_VAL_MASK) << STM32_CLOCK_VAL_SHIFT)) 67 68 /** @brief RCC_CCIPR register offset */ 69 #define CCIPR_REG 0x88 70 #define CCIPR2_REG 0x9C 71 72 /** @brief RCC_BDCR register offset */ 73 #define BDCR_REG 0x90 74 75 /** @brief RCC_CFGRx register offset */ 76 #define CFGR_REG 0x08 77 78 /** @brief Device domain clocks selection helpers */ 79 /** CCIPR devices */ 80 #define USART1_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 0, CCIPR_REG) 81 #define USART2_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 2, CCIPR_REG) 82 #define USART3_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 4, CCIPR_REG) 83 #define UART4_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 6, CCIPR_REG) 84 #define UART5_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 8, CCIPR_REG) 85 #define LPUART1_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 10, CCIPR_REG) 86 #define I2C1_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 12, CCIPR_REG) 87 #define I2C2_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 14, CCIPR_REG) 88 #define I2C3_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 16, CCIPR_REG) 89 #define LPTIM1_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 18, CCIPR_REG) 90 #define LPTIM2_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 20, CCIPR_REG) 91 #define SAI1_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 22, CCIPR_REG) 92 #define SAI2_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 24, CCIPR_REG) 93 #define CLK48_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 26, CCIPR_REG) 94 #define ADC_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 28, CCIPR_REG) 95 #define SWPMI1_SEL(val) STM32_DOMAIN_CLOCK(val, 1, 30, CCIPR_REG) 96 #define DFSDM1_SEL(val) STM32_DOMAIN_CLOCK(val, 1, 31, CCIPR_REG) 97 /** CCIPR2 devices */ 98 #define I2C4_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 0, CCIPR2_REG) 99 #define DFSDM_SEL(val) STM32_DOMAIN_CLOCK(val, 1, 2, CCIPR2_REG) 100 #define ADFSDM_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 3, CCIPR2_REG) 101 /* #define SAI1_SEL(val) STM32_DOMAIN_CLOCK(val, 7, 5, CCIPR2_REG) */ 102 /* #define SAI2_SEL(val) STM32_DOMAIN_CLOCK(val, 7, 8, CCIPR2_REG) */ 103 #define DSI_SEL(val) STM32_DOMAIN_CLOCK(val, 1, 12, CCIPR2_REG) 104 #define SDMMC_SEL(val) STM32_DOMAIN_CLOCK(val, 1, 14, CCIPR2_REG) 105 #define OSPI_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 20, CCIPR2_REG) 106 /** BDCR devices */ 107 #define RTC_SEL(val) STM32_DOMAIN_CLOCK(val, 3, 8, BDCR_REG) 108 /** CFGR devices */ 109 #define MCO1_SEL(val) STM32_MCO_CFGR(val, 0xF, 24, CFGR_REG) 110 #define MCO1_PRE(val) STM32_MCO_CFGR(val, 0x7, 28, CFGR_REG) 111 112 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L4_CLOCK_H_ */ 113
