drivers/rtc: Enable RTC driver for STM32F3 series

Enable RTC driver for STM32F3 series.

Signed-off-by: Yannis Damigos <[email protected]>

Author: ydamigos

drivers/rtc/Kconfig.stm32_rtc

@@ -15,7 +15,7 @@ config RTC_STM32
 	select USE_STM32_LL_EXTI
 	select NEWLIB_LIBC
 	help
-	  Build RTC driver for STM32 SoCs. Tested on STM32 F4, L4 series.
+	  Build RTC driver for STM32 SoCs. Tested on STM32 F3, F4, L4 series.
 
 choice RTC_STM32_CLOCK_SRC
 	bool "RTC clock source"

drivers/rtc/rtc_ll_stm32.c

@@ -19,7 +19,7 @@
 
 #if defined(CONFIG_SOC_SERIES_STM32L4X)
 #define EXTI_LINE	LL_EXTI_LINE_18
-#elif defined(CONFIG_SOC_SERIES_STM32F4X)
+#elif defined(CONFIG_SOC_SERIES_STM32F4X) || defined(CONFIG_SOC_SERIES_STM32F3X)
 #define EXTI_LINE	LL_EXTI_LINE_17
 #endif
 

soc/arm/st_stm32/stm32f3/dts.fixup

@@ -110,4 +110,9 @@
 #define CONFIG_PWM_STM32_20_DEV_NAME            ST_STM32_PWM_40015000_PWM_LABEL
 #define CONFIG_PWM_STM32_20_PRESCALER           ST_STM32_PWM_40015000_PWM_ST_PRESCALER
 
+#define CONFIG_RTC_0_BASE_ADDRESS               ST_STM32_RTC_40002800_BASE_ADDRESS
+#define CONFIG_RTC_0_IRQ_PRI                    ST_STM32_RTC_40002800_IRQ_0_PRIORITY
+#define CONFIG_RTC_0_IRQ                        ST_STM32_RTC_40002800_IRQ_0
+#define CONFIG_RTC_0_NAME                       ST_STM32_RTC_40002800_LABEL
+#define CONFIG_RTC_PRESCALER                    ST_STM32_RTC_40002800_PRESCALER
 /* End of SoC Level DTS fixup file */

soc/arm/st_stm32/stm32f3/soc.h

@@ -56,6 +56,12 @@
 #include <stm32f3xx_ll_iwdg.h>
 #endif
 
+#ifdef CONFIG_RTC_STM32
+#include <stm32f3xx_ll_rtc.h>
+#include <stm32f3xx_ll_exti.h>
+#include <stm32f3xx_ll_pwr.h>
+#endif
+
 #endif /* !_ASMLANGUAGE */
 
 #endif /* _STM32F3_SOC_H_ */