1 files changed, 4 insertions, 0 deletions
diff --git a/README b/README
index bbd7399f537..017a13df4da 100644
--- a/README
+++ b/README
@@ -431,6 +431,10 @@ The following options need to be configured:
 		This CONFIG is defined when the CPC is configured as SRAM at the
 		time of U-boot entry and is required to be re-initialized.
 
+		CONFIG_DEEP_SLEEP
+		Inidcates this SoC supports deep sleep feature. If deep sleep is
+		supported, core will start to execute uboot when wakes up.
+
 - Generic CPU options:
 		CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN