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-rw-r--r--drivers/rtc/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 35f34665e3c4..505f512ac254 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -38,6 +38,9 @@ config RTC_HCTOSYS_DEVICE
clock, usually rtc0. Initialization is done when the system
starts up, and when it resumes from a low power state.
+ The driver for this RTC device must be loaded before late_initcall
+ functions run, so it must usually be statically linked.
+
This clock should be battery-backed, so that it reads the correct
time when the system boots from a power-off state. Otherwise, your
system will need an external clock source (like an NTP server).