diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index f0361c0..fc87be4 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -164,6 +164,10 @@
 	int num_micd_rates;
 	struct wm8958_micd_rate *micd_rates;
 
+	/* Power up delays to add after microphone bias power up (ms) */
+	int micb1_delay;
+	int micb2_delay;
+
         /* LINEOUT can be differential or single ended */
         unsigned int lineout1_diff:1;
         unsigned int lineout2_diff:1;
diff --git a/include/sound/wm8993.h b/include/sound/wm8993.h
index eee19f6..8016fd8 100644
--- a/include/sound/wm8993.h
+++ b/include/sound/wm8993.h
@@ -32,6 +32,10 @@
 	unsigned int lineout1fb:1;
 	unsigned int lineout2fb:1;
 
+	/* Delay to add for microphones to stabalise after power up */
+	int micbias1_delay;
+	int micbias2_delay;
+
 	/* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
 	unsigned int micbias1_lvl:1;
 	unsigned int micbias2_lvl:1;
diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 9fd80d6..94737a3 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -1520,6 +1520,8 @@
 				      wm8993->pdata.lineout2fb,
 				      wm8993->pdata.jd_scthr,
 				      wm8993->pdata.jd_thr,
+				      wm8993->pdata.micbias1_delay,
+				      wm8993->pdata.micbias2_delay,
 				      wm8993->pdata.micbias1_lvl,
 				      wm8993->pdata.micbias2_lvl);
 
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 353612e..b74df52 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -3145,6 +3145,8 @@
 				      pdata->lineout2fb,
 				      pdata->jd_scthr,
 				      pdata->jd_thr,
+				      pdata->micb1_delay,
+				      pdata->micb2_delay,
 				      pdata->micbias1_lvl,
 				      pdata->micbias2_lvl);
 
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index b2e939a..7a773a8 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -644,6 +644,28 @@
 	return 0;
 }
 
+static int micbias_event(struct snd_soc_dapm_widget *w,
+			 struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = w->codec;
+	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
+
+	switch (w->shift) {
+	case WM8993_MICB1_ENA_SHIFT:
+		if (hubs->micb1_delay)
+			msleep(hubs->micb1_delay);
+		break;
+	case WM8993_MICB2_ENA_SHIFT:
+		if (hubs->micb2_delay)
+			msleep(hubs->micb2_delay);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 void wm_hubs_update_class_w(struct snd_soc_codec *codec)
 {
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
@@ -834,8 +856,10 @@
 SND_SOC_DAPM_INPUT("IN2RN"),
 SND_SOC_DAPM_INPUT("IN2RP:VXRP"),
 
-SND_SOC_DAPM_SUPPLY("MICBIAS2", WM8993_POWER_MANAGEMENT_1, 5, 0, NULL, 0),
-SND_SOC_DAPM_SUPPLY("MICBIAS1", WM8993_POWER_MANAGEMENT_1, 4, 0, NULL, 0),
+SND_SOC_DAPM_SUPPLY("MICBIAS2", WM8993_POWER_MANAGEMENT_1, 5, 0,
+		    micbias_event, SND_SOC_DAPM_POST_PMU),
+SND_SOC_DAPM_SUPPLY("MICBIAS1", WM8993_POWER_MANAGEMENT_1, 4, 0,
+		    micbias_event, SND_SOC_DAPM_POST_PMU),
 
 SND_SOC_DAPM_MIXER("IN1L PGA", WM8993_POWER_MANAGEMENT_2, 6, 0,
 		   in1l_pga, ARRAY_SIZE(in1l_pga)),
@@ -1170,13 +1194,16 @@
 int wm_hubs_handle_analogue_pdata(struct snd_soc_codec *codec,
 				  int lineout1_diff, int lineout2_diff,
 				  int lineout1fb, int lineout2fb,
-				  int jd_scthr, int jd_thr, int micbias1_lvl,
-				  int micbias2_lvl)
+				  int jd_scthr, int jd_thr,
+				  int micbias1_delay, int micbias2_delay,
+				  int micbias1_lvl, int micbias2_lvl)
 {
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
 
 	hubs->lineout1_se = !lineout1_diff;
 	hubs->lineout2_se = !lineout2_diff;
+	hubs->micb1_delay = micbias1_delay;
+	hubs->micb2_delay = micbias2_delay;
 
 	if (!lineout1_diff)
 		snd_soc_update_bits(codec, WM8993_LINE_MIXER1,
diff --git a/sound/soc/codecs/wm_hubs.h b/sound/soc/codecs/wm_hubs.h
index a5a09e6..24c763d 100644
--- a/sound/soc/codecs/wm_hubs.h
+++ b/sound/soc/codecs/wm_hubs.h
@@ -36,6 +36,9 @@
 	struct list_head dcs_cache;
 	bool (*check_class_w_digital)(struct snd_soc_codec *);
 
+	int micb1_delay;
+	int micb2_delay;
+
 	bool lineout1_se;
 	bool lineout1n_ena;
 	bool lineout1p_ena;
@@ -56,6 +59,7 @@
 					 int lineout1_diff, int lineout2_diff,
 					 int lineout1fb, int lineout2fb,
 					 int jd_scthr, int jd_thr,
+					 int micbias1_dly, int micbias2_dly,
 					 int micbias1_lvl, int micbias2_lvl);
 
 extern irqreturn_t wm_hubs_dcs_done(int irq, void *data);