From bb53fbdff4faf771cb045edce868b06b118872ec Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Tue, 27 May 2014 07:11:23 -0600
Subject: [PATCH] STM32 RTC: Add retry to initialization logic.  Sometime RTC
 initialization takes longer.  From dlsitzer.

---
 ChangeLog | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 82e83517d6..4518aec22f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7379,4 +7379,6 @@
 	  that were reverted in the PX4 repositories (2014-5-25).
 	* sched/Kconfig:  CONFIG_START_YEAR/MONTH/DAY are not required is the
 	  RTC is enabled (2014-5-26).
-
+	* arch/arm/src/stm32/stm32_rtcc.c:  Add retry logic to RTC initialization.
+	  It sometimes takes longer for the RTC to initialize, at least as noted
+	  on an F2 part.  From dlsitzer (2014-5-27).