From 5debc6a94d6af7738cc3a0e33a0eda1a5aae8c89 Mon Sep 17 00:00:00 2001
From: Francois Ramu <francois.ramu@st.com>
Date: Wed, 3 Jun 2020 10:13:05 +0200
Subject: [PATCH] soc: arm: stm32f2 add rtc feature on this serie

This patch enables the rtc on the stm32f2 soc series
from STMicroelectronics

Signed-off-by: Francois Ramu <francois.ramu@st.com>
---
 dts/arm/st/f2/stm32f2.dtsi     | 10 ++++++++++
 soc/arm/st_stm32/stm32f2/soc.h |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/dts/arm/st/f2/stm32f2.dtsi b/dts/arm/st/f2/stm32f2.dtsi
index 549afec4ba0..c1fd4f27d55 100644
--- a/dts/arm/st/f2/stm32f2.dtsi
+++ b/dts/arm/st/f2/stm32f2.dtsi
@@ -142,6 +142,16 @@
 			};
 		};
 
+		rtc: rtc@40002800 {
+			compatible = "st,stm32-rtc";
+			reg = <0x40002800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x10000000>;
+			interrupts = <41 0>;
+			prescaler = <32768>;
+			status = "disabled";
+			label = "RTC_0";
+		};
+
 		iwdg: watchdog@40003000 {
 			compatible = "st,stm32-watchdog";
 			reg = <0x40003000 0x400>;
diff --git a/soc/arm/st_stm32/stm32f2/soc.h b/soc/arm/st_stm32/stm32f2/soc.h
index 32e0ebb5ff8..bb6f5b3091d 100644
--- a/soc/arm/st_stm32/stm32f2/soc.h
+++ b/soc/arm/st_stm32/stm32f2/soc.h
@@ -54,6 +54,12 @@
 #include <stm32f2xx_ll_wwdg.h>
 #endif
 
+#if defined(CONFIG_COUNTER_RTC_STM32)
+#include <stm32f2xx_ll_rtc.h>
+#include <stm32f2xx_ll_exti.h>
+#include <stm32f2xx_ll_pwr.h>
+#endif
+
 #ifdef CONFIG_ADC_STM32
 #include <stm32f2xx_ll_adc.h>
 #endif