1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index 9f90989ac59a..cb84d95c3aac 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -191,6 +191,17 @@ static int fsl_micfil_reset(struct device *dev)
 		return ret;
 	}
 
+	/*
+	 * SRES is self-cleared bit, but REG_MICFIL_CTRL1 is defined
+	 * as non-volatile register, so SRES still remain in regmap
+	 * cache after set, that every update of REG_MICFIL_CTRL1,
+	 * software reset happens. so clear it explicitly.
+	 */
+	ret = regmap_clear_bits(micfil->regmap, REG_MICFIL_CTRL1,
+				MICFIL_CTRL1_SRES);
+	if (ret)
+		return ret;
+
 	return 0;
 }