diff --git a/[refs] b/[refs]
index f5de073e1401..1ea0c74314f1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 072cd703b6a2a3adc14fbc2d969424c7022a7892
+refs/heads/master: f2be64b3b15f52ceb83ff26abc10705a31ae5352
diff --git a/trunk/arch/arm/Kconfig b/trunk/arch/arm/Kconfig
index c8d94dcd8ef7..620f2ca94ed2 100644
--- a/trunk/arch/arm/Kconfig
+++ b/trunk/arch/arm/Kconfig
@@ -361,6 +361,11 @@ config NO_IDLE_HZ
 	  Alternatively, if you want dynamic tick automatically enabled
 	  during boot, pass "dyntick=enable" via the kernel command string.
 
+	  Please note that dynamic tick may affect the accuracy of
+	  timekeeping on some platforms depending on the implementation.
+	  Currently at least OMAP platform is known to have accurate
+	  timekeeping with dynamic tick.
+
 config ARCH_DISCONTIGMEM_ENABLE
 	bool
 	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)