diff --git a/include/libopencm3/stm32/f0/rcc.h b/include/libopencm3/stm32/f0/rcc.h
index 6d502e8b..5a614e01 100644
--- a/include/libopencm3/stm32/f0/rcc.h
+++ b/include/libopencm3/stm32/f0/rcc.h
@@ -509,6 +509,9 @@ void rcc_css_int_clear(void);
 int rcc_css_int_flag(void);
 void rcc_set_sysclk_source(enum rcc_osc clk);
 void rcc_set_usbclk_source(enum rcc_osc clk);
+void rcc_set_rtc_clock_source(enum rcc_osc clk);
+void rcc_enable_rtc_clock(void);
+void rcc_disable_rtc_clock(void);
 void rcc_set_pll_multiplication_factor(uint32_t mul);
 void rcc_set_ppre(uint32_t ppre);
 void rcc_set_hpre(uint32_t hpre);
diff --git a/lib/stm32/f0/rcc.c b/lib/stm32/f0/rcc.c
index 97e16e8b..7c82e995 100644
--- a/lib/stm32/f0/rcc.c
+++ b/lib/stm32/f0/rcc.c
@@ -438,6 +438,50 @@ void rcc_set_usbclk_source(enum rcc_osc clk)
 	}
 }
 
+/*---------------------------------------------------------------------------*/
+/** @brief RCC Enable the RTC clock
+
+*/
+
+void rcc_enable_rtc_clock(void)
+{
+	RCC_BDCR |= RCC_BDCR_RTCEN;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief RCC Disable the RTC clock
+
+*/
+
+void rcc_disable_rtc_clock(void)
+{
+	RCC_BDCR &= ~RCC_BDCR_RTCEN;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief RCC Set the Source for the RTC clock
+
+@param[in] clock_source ::rcc_osc. RTC clock source. Only HSE/32, LSE and LSI.
+*/
+
+void rcc_set_rtc_clock_source(enum rcc_osc clk)
+{
+	switch (clk) {
+	case RCC_HSE:
+		RCC_BDCR = (RCC_BDCR & ~RCC_BDCR_RTCSEL) | RCC_BDCR_RTCSEL_HSE;
+		break;
+	case RCC_LSE:
+		RCC_BDCR = (RCC_BDCR & ~RCC_BDCR_RTCSEL) | RCC_BDCR_RTCSEL_LSE;
+		break;
+	case RCC_LSI:
+		RCC_BDCR = (RCC_BDCR & ~RCC_BDCR_RTCSEL) | RCC_BDCR_RTCSEL_LSI;
+		break;
+	default:
+		/* do nothing */
+		break;
+	}
+}
+
 /*---------------------------------------------------------------------------*/
 /** @brief RCC Set the PLL Multiplication Factor.
  *