diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 9d80294..ae6d3a4 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -23,6 +23,7 @@
 /* An enum of all the supported cache types */
 enum regcache_type {
 	REGCACHE_NONE,
+	REGCACHE_INDEXED,
 };
 
 /**