diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index 0a60677397b3dedb0b9652e112137e9b3c03f3d4..4c29bd2ae75cf987b34e28e28298ab026bb8c40e 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -574,6 +574,7 @@ static const struct regmap_config wm8974_regmap = {
 	.max_register = WM8974_MONOMIX,
 	.reg_defaults = wm8974_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
+	.cache_type = REGCACHE_FLAT,
 };
 
 static int wm8974_probe(struct snd_soc_codec *codec)