diff --git a/drivers/regulator/isl9305.c b/drivers/regulator/isl9305.c
index 0f7560093091..5a234f25e6bb 100644
--- a/drivers/regulator/isl9305.c
+++ b/drivers/regulator/isl9305.c
@@ -134,7 +134,7 @@ static const struct regmap_config isl9305_regmap = {
 	.val_bits = 8,
 
 	.max_register = ISL9305_MAX_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int isl9305_i2c_probe(struct i2c_client *i2c)