diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 4454d2df3a58..7dbefe8fe5c2 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -473,9 +473,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 	}
 
 	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
-			   ARIZONA_MICD_BIAS_STARTTIME_MASK |
 			   ARIZONA_MICD_RATE_MASK,
-			   7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT |
 			   8 << ARIZONA_MICD_RATE_SHIFT);
 
 	arizona_clk32k_enable(arizona);