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soc: stm32f3xx: support of Cube LL Clock driver

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After introduction of STM32Cube based clock control driver for
stm32 family, provide its support on stm32f3x soc.
Clean up will have to be done afterwards.

Change-Id: I20480579f12a6fc1f1f6a51589981ac3f1d63ef0
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2017-02-09 09:15:01 +01:00 • committed by Maureen Helm
commit 7ed7ccc020
3 changed files with 21 additions and 1 deletions
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6
arch/arm/soc/st_stm32/stm32f3/soc.c
View file

@ -42,8 +42,12 @@ static int stm32f3_init(struct device *arg)
irq_unlock(key);
/* Update CMSIS SystemCoreClock variable (HCLK) */
#ifdef CONFIG_CLOCK_CONTROL_STM32_CUBE
/* At reset, System core clock is set to 4MHz */
SystemCoreClock = 4000000;
#else
SystemCoreClock = CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC;
#endif /* CONFIG_CLOCK_CONTROL_STM32_CUBE */
return 0;
}

7
arch/arm/soc/st_stm32/stm32f3/soc.h
View file

@ -52,6 +52,13 @@ enum stm32f3x_pin_config_mode {
#include <stm32f3xx_ll_usart.h>
#endif
#ifdef CONFIG_CLOCK_CONTROL_STM32_CUBE
#include <stm32f3xx_ll_utils.h>
#include <stm32f3xx_ll_bus.h>
#include <stm32f3xx_ll_rcc.h>
#include <stm32f3xx_ll_system.h>
#endif /* CONFIG_CLOCK_CONTROL_STM32_CUBE */
#endif /* !_ASMLANGUAGE */
#endif /* _STM32F3_SOC_H_ */

9
arch/arm/soc/st_stm32/stm32f3/soc_gpio.c
View file

@ -188,7 +188,16 @@ int stm32_gpio_enable_int(int port, int pin)
struct device *clk =
device_get_binding(STM32_CLOCK_CONTROL_NAME);
#ifdef CONFIG_CLOCK_CONTROL_STM32_CUBE
struct stm32_pclken pclken = {
.bus = STM32_CLOCK_BUS_APB2,
.enr = LL_APB2_GRP1_PERIPH_SYSCFG
};
clock_control_on(clk, (clock_control_subsys_t *) &pclken);
#else
clock_control_on(clk, UINT_TO_POINTER(STM32F3X_CLOCK_SUBSYS_SYSCFG));
#endif /* CONFIG_CLOCK_CONTROL_STM32_CUBE */
int shift = 0;