diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 4241eeab3386..f4cf6851fae9 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -849,6 +849,7 @@ static struct s3c_rtc_data const s3c2443_rtc_data = {
 
 static struct s3c_rtc_data const s3c6410_rtc_data = {
 	.max_user_freq		= 32768,
+	.needs_src_clk		= true,
 	.irq_handler		= s3c6410_rtc_irq,
 	.set_freq		= s3c6410_rtc_setfreq,
 	.enable_tick		= s3c6410_rtc_enable_tick,