diff --git a/drivers/mfd/wm8997-tables.c b/drivers/mfd/wm8997-tables.c
index 3476787c485e..288c57b2d21e 100644
--- a/drivers/mfd/wm8997-tables.c
+++ b/drivers/mfd/wm8997-tables.c
@@ -1523,7 +1523,7 @@ const struct regmap_config wm8997_i2c_regmap = {
 	.readable_reg = wm8997_readable_register,
 	.volatile_reg = wm8997_volatile_register,
 
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.reg_defaults = wm8997_reg_default,
 	.num_reg_defaults = ARRAY_SIZE(wm8997_reg_default),
 };