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-rw-r--r--lib/stm32/f1/rtc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/stm32/f1/rtc.c b/lib/stm32/f1/rtc.c
index 08a4953..cfc5f5b 100644
--- a/lib/stm32/f1/rtc.c
+++ b/lib/stm32/f1/rtc.c
@@ -67,6 +67,8 @@ void rtc_awake_from_off(osc_t clock_source)
RCC_BDCR |= (1 << 9) | (1 << 8);
break;
case PLL:
+ case PLL2:
+ case PLL3:
case HSI:
/* Unusable clock source, here to prevent warnings. */
/* Turn off clock sources to RTC. */