diff --git a/include/hardware/power.h b/include/hardware/power.h
index 89d57ed..dc33705 100644
--- a/include/hardware/power.h
+++ b/include/hardware/power.h
@@ -44,7 +44,8 @@
      * KLP.
      */
     POWER_HINT_VIDEO_ENCODE = 0x00000003,
-    POWER_HINT_VIDEO_DECODE = 0x00000004
+    POWER_HINT_VIDEO_DECODE = 0x00000004,
+    POWER_HINT_LOW_POWER = 0x00000005
 } power_hint_t;
 
 /**
@@ -112,6 +113,13 @@
      *     and it may be appropriate to raise speeds of CPU, memory bus,
      *     etc.  The data parameter is unused.
      *
+     * POWER_HINT_LOW_POWER
+     *
+     *     Low power mode is activated or deactivated. Low power mode
+     *     is intended to save battery at the cost of performance. The data
+     *     parameter is non-zero when low power mode is activated, and zero
+     *     when deactivated.
+     *
      * A particular platform may choose to ignore any hint.
      *
      * availability: version 0.2