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drivers: clock_control: STM32F7 family clock control

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This patch adds clock control support for STM32F7 family
microcontrollers.

Signed-off-by: Yurii Hamann <yurii@hamann.site>
This commit is contained in:
Yurii Hamann 2018-06-13 21:07:25 +03:00 • committed by Kumar Gala
commit 4df673f3fc
5 changed files with 70 additions and 6 deletions
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7
arch/arm/soc/st_stm32/stm32f7/soc.h
View file

@ -23,6 +23,13 @@
#include <misc/util.h> #include <misc/util.h>
#include <stm32f7xx.h> #include <stm32f7xx.h>
#ifdef CONFIG_CLOCK_CONTROL_STM32_CUBE
#include <stm32f7xx_ll_utils.h>
#include <stm32f7xx_ll_bus.h>
#include <stm32f7xx_ll_rcc.h>
#include <stm32f7xx_ll_system.h>
#endif /* CONFIG_CLOCK_CONTROL_STM32_CUBE */
#endif /* !_ASMLANGUAGE */ #endif /* !_ASMLANGUAGE */
#endif /* _STM32F7_SOC_H_ */ #endif /* _STM32F7_SOC_H_ */

1
drivers/clock_control/CMakeLists.txt
View file

@ -11,6 +11,7 @@ if(CONFIG_CLOCK_CONTROL_STM32_CUBE)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F1X stm32f1x_ll_clock.c) zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F1X stm32f1x_ll_clock.c)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F3X stm32f3x_ll_clock.c) zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F3X stm32f3x_ll_clock.c)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F4X stm32f4x_ll_clock.c) zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F4X stm32f4x_ll_clock.c)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32F7X stm32f7x_ll_clock.c)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32L0X stm32l0x_ll_clock.c) zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32L0X stm32l0x_ll_clock.c)
zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32L4X stm32l4x_ll_clock.c) zephyr_sources_ifdef(CONFIG_SOC_SERIES_STM32L4X stm32l4x_ll_clock.c)
endif() endif()

4
drivers/clock_control/Kconfig.stm32
View file

@ -195,7 +195,7 @@ config CLOCK_STM32_PLL_MULTIPLIER
endif # SOC_SERIES_STM32F3X endif # SOC_SERIES_STM32F3X
if SOC_SERIES_STM32F4X if SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X
config CLOCK_STM32_PLL_M_DIVISOR config CLOCK_STM32_PLL_M_DIVISOR
int "Division factor for PLL VCO input clock" int "Division factor for PLL VCO input clock"
@ -239,7 +239,7 @@ config CLOCK_STM32_PLL_Q_DIVISOR
need a frequency lower than or equal to 48 MHz to work correctly. need a frequency lower than or equal to 48 MHz to work correctly.
Allowed values: 2-15 Allowed values: 2-15
endif # SOC_SERIES_STM32F4X endif # SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X
if SOC_SERIES_STM32L0X if SOC_SERIES_STM32L0X

14
drivers/clock_control/stm32_ll_clock.c
View file

@ -56,11 +56,14 @@ static inline int stm32_clock_control_on(struct device *dev,
case STM32_CLOCK_BUS_AHB1: case STM32_CLOCK_BUS_AHB1:
LL_AHB1_GRP1_EnableClock(pclken->enr); LL_AHB1_GRP1_EnableClock(pclken->enr);
break; break;
#if defined(CONFIG_SOC_SERIES_STM32L4X) || defined(CONFIG_SOC_SERIES_STM32F4X) #if defined(CONFIG_SOC_SERIES_STM32L4X) || \
defined(CONFIG_SOC_SERIES_STM32F4X) || \
defined(CONFIG_SOC_SERIES_STM32F7X)
case STM32_CLOCK_BUS_AHB2: case STM32_CLOCK_BUS_AHB2:
LL_AHB2_GRP1_EnableClock(pclken->enr); LL_AHB2_GRP1_EnableClock(pclken->enr);
break; break;
#endif /* CONFIG_SOC_SERIES_STM32L4X || CONFIG_SOC_SERIES_STM32F4X */ #endif /* CONFIG_SOC_SERIES_STM32L4X || CONFIG_SOC_SERIES_STM32F4X ||
CONFIG_SOC_SERIES_STM32F7X */
case STM32_CLOCK_BUS_APB1: case STM32_CLOCK_BUS_APB1:
LL_APB1_GRP1_EnableClock(pclken->enr); LL_APB1_GRP1_EnableClock(pclken->enr);
break; break;
@ -96,11 +99,14 @@ static inline int stm32_clock_control_off(struct device *dev,
case STM32_CLOCK_BUS_AHB1: case STM32_CLOCK_BUS_AHB1:
LL_AHB1_GRP1_DisableClock(pclken->enr); LL_AHB1_GRP1_DisableClock(pclken->enr);
break; break;
#if defined(CONFIG_SOC_SERIES_STM32L4X) || defined(CONFIG_SOC_SERIES_STM32F4X) #if defined(CONFIG_SOC_SERIES_STM32L4X) || \
defined(CONFIG_SOC_SERIES_STM32F4X) || \
defined(CONFIG_SOC_SERIES_STM32F7X)
case STM32_CLOCK_BUS_AHB2: case STM32_CLOCK_BUS_AHB2:
LL_AHB2_GRP1_DisableClock(pclken->enr); LL_AHB2_GRP1_DisableClock(pclken->enr);
break; break;
#endif /* CONFIG_SOC_SERIES_STM32L4X || CONFIG_SOC_SERIES_STM32F4X */ #endif /* CONFIG_SOC_SERIES_STM32L4X || CONFIG_SOC_SERIES_STM32F4X ||
CONFIG_SOC_SERIES_STM32F7X */
case STM32_CLOCK_BUS_APB1: case STM32_CLOCK_BUS_APB1:
LL_APB1_GRP1_DisableClock(pclken->enr); LL_APB1_GRP1_DisableClock(pclken->enr);
break; break;

50
drivers/clock_control/stm32f7x_ll_clock.c Normal file
View file

@ -0,0 +1,50 @@
/*
* Copyright (c) 2018 Yurii Hamann
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <soc_registers.h>
#include <clock_control.h>
#include <misc/util.h>
#include <clock_control/stm32_clock_control.h>
#include "stm32_ll_clock.h"
#ifdef CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL
/* Macros to fill up division factors values */
#define _pllm(v) LL_RCC_PLLM_DIV_ ## v
#define pllm(v) _pllm(v)
#define _pllp(v) LL_RCC_PLLP_DIV_ ## v
#define pllp(v) _pllp(v)
/**
* @brief fill in pll configuration structure
*/
void config_pll_init(LL_UTILS_PLLInitTypeDef *pllinit)
{
pllinit->PLLM = pllm(CONFIG_CLOCK_STM32_PLL_M_DIVISOR);
pllinit->PLLN = CONFIG_CLOCK_STM32_PLL_N_MULTIPLIER;
pllinit->PLLP = pllp(CONFIG_CLOCK_STM32_PLL_P_DIVISOR);
}
#endif /* CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL */
/**
* @brief Activate default clocks
*/
void config_enable_default_clocks(void)
{
/* Power Interface clock enabled by default */
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
}
/**
* @brief Function kept for driver genericity
*/
void LL_RCC_MSI_Disable(void)
{
/* Do nothing */
}