diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index e927955ba982..38bfd46f4ad8 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -781,7 +781,7 @@ static const struct regmap_config fsl_esai_regmap_config = {
 	.readable_reg = fsl_esai_readable_reg,
 	.volatile_reg = fsl_esai_volatile_reg,
 	.writeable_reg = fsl_esai_writeable_reg,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_FLAT,
 };
 
 static int fsl_esai_probe(struct platform_device *pdev)