LCOV - code coverage report
Current view: top level - zephyr/dt-bindings/clock - stm32c0_clock.h Hit Total Coverage
Test: new.info Lines: 10 39 25.6 %
Date: 2024-12-22 00:14:23

          Line data    Source code
       1           0 : /*
       2             :  * Copyright (c) 2023 Benjamin Björnsson <benjamin.bjornsson@gmail.com>
       3             :  *
       4             :  * SPDX-License-Identifier: Apache-2.0
       5             :  */
       6             : #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32C0_CLOCK_H_
       7             : #define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32C0_CLOCK_H_
       8             : 
       9             : #include "stm32_common_clocks.h"
      10             : 
      11             : /** Bus clocks */
      12           1 : #define STM32_CLOCK_BUS_IOP     0x034
      13           0 : #define STM32_CLOCK_BUS_AHB1    0x038
      14           0 : #define STM32_CLOCK_BUS_APB1    0x03c
      15           0 : #define STM32_CLOCK_BUS_APB1_2  0x040
      16             : 
      17           0 : #define STM32_PERIPH_BUS_MIN    STM32_CLOCK_BUS_IOP
      18           0 : #define STM32_PERIPH_BUS_MAX    STM32_CLOCK_BUS_APB1_2
      19             : 
      20             : /** Domain clocks */
      21             : /* RM0490, §5.4.21/22 Clock configuration register (RCC_CCIPRx) */
      22             : 
      23             : /** System clock */
      24             : /* defined in stm32_common_clocks.h */
      25             : /** Fixed clocks  */
      26             : /* Low speed clocks defined in stm32_common_clocks.h */
      27           1 : #define STM32_SRC_HSI48         (STM32_SRC_LSI + 1)
      28           0 : #define STM32_SRC_HSE           (STM32_SRC_HSI48 + 1)
      29             : /** Peripheral bus clock */
      30           1 : #define STM32_SRC_PCLK          (STM32_SRC_HSE + 1)
      31             : 
      32           0 : #define STM32_CLOCK_REG_MASK    0xFFU
      33           0 : #define STM32_CLOCK_REG_SHIFT   0U
      34           0 : #define STM32_CLOCK_SHIFT_MASK  0x1FU
      35           0 : #define STM32_CLOCK_SHIFT_SHIFT 8U
      36           0 : #define STM32_CLOCK_MASK_MASK   0x7U
      37           0 : #define STM32_CLOCK_MASK_SHIFT  13U
      38           0 : #define STM32_CLOCK_VAL_MASK    0x7U
      39           0 : #define STM32_CLOCK_VAL_SHIFT   16U
      40             : 
      41             : /**
      42             :  * @brief STM32 clock configuration bit field.
      43             :  *
      44             :  * - reg   (1/2/3)         [ 0 : 7 ]
      45             :  * - shift (0..31)         [ 8 : 12 ]
      46             :  * - mask  (0x1, 0x3, 0x7) [ 13 : 15 ]
      47             :  * - val   (0..7)          [ 16 : 18 ]
      48             :  *
      49             :  * @param reg RCC_CCIPRx register offset
      50             :  * @param shift Position within RCC_CCIPRx.
      51             :  * @param mask Mask for the RCC_CCIPRx field.
      52             :  * @param val Clock value (0, 1, ... 7).
      53             :  */
      54           1 : #define STM32_DOMAIN_CLOCK(val, mask, shift, reg)                                       \
      55             :         ((((reg) & STM32_CLOCK_REG_MASK) << STM32_CLOCK_REG_SHIFT) |          \
      56             :          (((shift) & STM32_CLOCK_SHIFT_MASK) << STM32_CLOCK_SHIFT_SHIFT) |    \
      57             :          (((mask) & STM32_CLOCK_MASK_MASK) << STM32_CLOCK_MASK_SHIFT) |               \
      58             :          (((val) & STM32_CLOCK_VAL_MASK) << STM32_CLOCK_VAL_SHIFT))
      59             : 
      60             : /** @brief RCC_CCIPR register offset */
      61           1 : #define CCIPR_REG               0x54
      62             : 
      63             : /** @brief RCC_CSR1 register offset */
      64           1 : #define CSR1_REG                0x5C
      65             : 
      66             : /** @brief RCC_CFGRx register offset */
      67           1 : #define CFGR1_REG               0x08
      68             : 
      69             : /** @brief Device domain clocks selection helpers */
      70             : /** CCIPR devices */
      71           1 : #define USART1_SEL(val)         STM32_DOMAIN_CLOCK(val, 3, 0, CCIPR_REG)
      72           0 : #define I2C1_SEL(val)           STM32_DOMAIN_CLOCK(val, 3, 12, CCIPR_REG)
      73           0 : #define I2C2_I2S1_SEL(val)      STM32_DOMAIN_CLOCK(val, 3, 14, CCIPR_REG)
      74           0 : #define ADC_SEL(val)            STM32_DOMAIN_CLOCK(val, 3, 30, CCIPR_REG)
      75             : /** CSR1 devices */
      76           1 : #define RTC_SEL(val)            STM32_DOMAIN_CLOCK(val, 3, 8, CSR1_REG)
      77             : 
      78             : /** CFGR1 devices */
      79           1 : #define MCO1_SEL(val)           STM32_MCO_CFGR(val, 0x7, 24, CFGR1_REG)
      80           0 : #define MCO1_PRE(val)           STM32_MCO_CFGR(val, 0x7, 28, CFGR1_REG)
      81           0 : #define MCO2_SEL(val)           STM32_MCO_CFGR(val, 0x7, 16, CFGR1_REG)
      82           0 : #define MCO2_PRE(val)           STM32_MCO_CFGR(val, 0x7, 20, CFGR1_REG)
      83             : 
      84             : /* MCO prescaler : division factor */
      85           0 : #define MCO_PRE_DIV_1   0
      86           0 : #define MCO_PRE_DIV_2   1
      87           0 : #define MCO_PRE_DIV_4   2
      88           0 : #define MCO_PRE_DIV_8   3
      89           0 : #define MCO_PRE_DIV_16  4
      90           0 : #define MCO_PRE_DIV_32  5
      91           0 : #define MCO_PRE_DIV_64  6
      92           0 : #define MCO_PRE_DIV_128 7
      93             : 
      94             : #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32C0_CLOCK_H_ */

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