diff --git a/os/hal/platforms/STM32/RTCv2/rtc_lld.c b/os/hal/platforms/STM32/RTCv2/rtc_lld.c
index f549dc62d..3fdc7ceee 100644
--- a/os/hal/platforms/STM32/RTCv2/rtc_lld.c
+++ b/os/hal/platforms/STM32/RTCv2/rtc_lld.c
@@ -187,11 +187,9 @@ void rtc_lld_get_time(RTCDriver *rtcp, RTCTime *timespec) {
 
   timespec->tv_time = RTCD1.id_rtc->TR;
   timespec->tv_date = RTCD1.id_rtc->DR;
-#if RTC_HAS_SUBSECONDS
+#if STM32_RTC_HAS_SUBSECONDS
   timespec->tv_msec = ((RTCD1.id_rtc->PRER & 0x7FFF) - RTCD1.id_rtc->SSR) /
                       ((RTCD1.id_rtc->PRER & 0x7FFF) + 1);
-#else
-  timespec->tv_msec = 0;
 #endif /* STM32_RTC_HAS_SUBSECONDS */
 }
 
@@ -282,45 +280,15 @@ void rtc_lld_get_periodic_wakeup(RTCDriver *rtcp, RTCWakeup *wakeupspec){
   wakeupspec->wakeup |= (((uint32_t)rtcp->id_rtc->CR) & 0x7) << 16;
 }
 
-
 #if RTC_SUPPORTS_CALLBACKS
 
-static const EXTConfig rtc_extcfg = {
-  {
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_RISING_EDGE, NULL}, //17, RTC alarm
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_RISING_EDGE, NULL}, //21 RTC tamper
-   {EXT_CH_MODE_RISING_EDGE, NULL}  //22 RTC wakeup
-  },
-  EXT_MODE_EXTI(0,
-                0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0, 0, 0, 0)
-};
-
-
-
 /**
  * @brief   Enables or disables RTC callbacks.
- * @details TODO:
+ * @details To enable interrupt set corresponding bit in @p RTCCallbackConfig
+ *          structure. To disable interrupt clear that bit.
+ * @note    This function just enable/disable interrupts in RTC CR register.
+ *          You must configure callbacks in EXTI driver for corresponding
+ *          interrupts. See documentation for you MCU.
  *
  * @param[in] rtcp      pointer to RTC driver structure
  * @param[in] cb_cfg    pointer to configuration structure with callbacks
@@ -329,36 +297,25 @@ static const EXTConfig rtc_extcfg = {
  */
 void rtc_lld_set_callback(RTCDriver *rtcp, RTCCallbackConfig *cb_cfg) {
 
-  /* To configure callback we must confugure EXTI interrupt on
-   * corresponding line.
-   * And then enable interrupts in RTC CR register.  */
-
-  if (cb_cfg->alarm_cb != NULL){
-    rtc_extcfg.channels[STM32_RTC_ALARM_EXTI_CH].cb = cb_cfg->alarm_cb;
-    rtcp->id_rtc->CR |= RTC_CR_ALRBIE;
+  if (cb_cfg->cb_cfg & ALARMA_INT)
     rtcp->id_rtc->CR |= RTC_CR_ALRAIE;
-  }
-  else{
-    extChannelDisable(&EXTD1, STM32_RTC_ALARM_EXTI_CH);
-  }
+  else
+    rtcp->id_rtc->CR &= ~RTC_CR_ALRAIE;
 
-  if (cb_cfg->tamper_timestapm_cb != NULL){
-    rtc_extcfg.channels[STM32_RTC_TAMPER_TIMESTAMP_EXTI_CH].cb = cb_cfg->tamper_timestapm_cb;
-    rtcp->id_rtc->CR |= RTC_CR_TSIE;
-  }
-  else{
-    extChannelDisable(&EXTD1, STM32_RTC_TAMPER_TIMESTAMP_EXTI_CH);
-  }
+  if (cb_cfg->cb_cfg & ALARMB_INT)
+    rtcp->id_rtc->CR |= RTC_CR_ALRBIE;
+  else
+    rtcp->id_rtc->CR &= ~RTC_CR_ALRBIE;
 
-  if (cb_cfg->wakeup_cb != NULL){
-    rtc_extcfg.channels[STM32_RTC_WAKEUP_EXTI_CH].cb = cb_cfg->wakeup_cb;
+  if (cb_cfg->cb_cfg & WAKEUP_INT)
     rtcp->id_rtc->CR |= RTC_CR_WUTIE;
-  }
-  else{
-    extChannelDisable(&EXTD1, STM32_RTC_WAKEUP_EXTI_CH);
-  }
+  else
+    rtcp->id_rtc->CR &= ~RTC_CR_WUTIE;
 
-  extStart(&EXTD1, &rtc_extcfg);
+  if (cb_cfg->cb_cfg & TIMESTAMP_INT)
+    rtcp->id_rtc->CR |= RTC_CR_TSIE;
+  else
+    rtcp->id_rtc->CR &= ~RTC_CR_TSIE;
 }
 #endif /* RTC_SUPPORTS_CALLBACKS */
 
diff --git a/os/hal/platforms/STM32/RTCv2/rtc_lld.h b/os/hal/platforms/STM32/RTCv2/rtc_lld.h
index 3780945c4..8e1b58f6b 100644
--- a/os/hal/platforms/STM32/RTCv2/rtc_lld.h
+++ b/os/hal/platforms/STM32/RTCv2/rtc_lld.h
@@ -48,11 +48,12 @@
 #define RTC_ALARMS                  2
 
 /**
- * @brief   EXTI channel numbers for different RTC events.
+ * @brief   Interrupt enable masks.
  */
-#define STM32_RTC_ALARM_EXTI_CH             17
-#define STM32_RTC_TAMPER_TIMESTAMP_EXTI_CH  21
-#define STM32_RTC_WAKEUP_EXTI_CH            22
+#define ALARMA_INT    0x1
+#define ALARMB_INT    0x2
+#define WAKEUP_INT    0x4
+#define TIMESTAMP_INT 0x8
 
 /*===========================================================================*/
 /* Driver pre-compile time settings.                                         */
@@ -111,11 +112,6 @@ typedef enum {
   RTC_EVENT_TIMESTAMP = 4,        /** Triggered on TimeStamp event.          */
 } rtcevent_t;
 
-/**
- * @brief   Type of a generic RTC callback.
- */
-typedef void (*rtccb_t)(RTCDriver *rtcp, rtcevent_t event);
-
 /**
  * @brief   Structure representing an RTC time stamp.
  */
@@ -130,9 +126,10 @@ struct RTCTime {
   uint32_t tv_time;
   /**
    * @brief Fractional part of time.
-   * @note  If platform does not support subseconds than always zero.
    */
+#if STM32_RTC_HAS_SUBSECONDS
   uint32_t tv_msec;
+#endif
 };
 
 /**
@@ -163,20 +160,7 @@ struct RTCWakeup {
  * @brief   Structure representing an RTC callbacks config.
  */
 struct RTCCallbackConfig{
-#if RTC_SUPPORTS_CALLBACKS
-  /**
-   * @brief Alarm callback pointer.
-   */
-  rtccb_t           alarm_cb;
-  /**
-   * @brief Tamper or TimeStamp callback pointer.
-   */
-  rtccb_t           tamper_timestapm_cb;
-  /**
-   * @brief Periodic wakeup callback pointer.
-   */
-  rtccb_t           wakeup_cb;
-#endif /* RTC_SUPPORTS_CALLBACKS */
+  uint32_t cb_cfg;
 };
 
 /**
@@ -188,9 +172,9 @@ struct RTCDriver{
    */
   RTC_TypeDef               *id_rtc;
   /**
-   * @brief Current configuration data.
+   * @brief Current callback confuguration.
    */
-  const RTCCallbackConfig   *cb_config;
+  const RTCCallbackConfig   *cb_cfg;
 };
 
 /*===========================================================================*/
diff --git a/os/hal/src/rtc.c b/os/hal/src/rtc.c
index 37ab87c00..9df399eeb 100644
--- a/os/hal/src/rtc.c
+++ b/os/hal/src/rtc.c
@@ -153,10 +153,6 @@ void rtcSetCallback(RTCDriver *rtcp, RTCCallbackConfig *cb_cfg) {
 }
 #endif /* RTC_SUPPORTS_CALLBACKS */
 
-
-
-
-
 #endif /* HAL_USE_RTC */
 
 /** @} */