diff --git a/src/soc/mediatek/common/include/soc/usb_common.h b/src/soc/mediatek/common/include/soc/usb_common.h
index 8a36c6a66b..22704e77b5 100644
--- a/src/soc/mediatek/common/include/soc/usb_common.h
+++ b/src/soc/mediatek/common/include/soc/usb_common.h
@@ -70,6 +70,8 @@ struct ssusb_ippc_regs {
 #define PA6_RG_U2_ISO_EN			(0x1 << 31)
 #define PA6_RG_U2_BC11_SW_EN		(0x1 << 23)
 #define PA6_RG_U2_OTG_VBUSCMP_EN	(0x1 << 20)
+#define PA6_RG_U2_DISCTH		(0xf << 4)
+#define PA6_RG_U2_DISCTH_VAL(x)		((0xf & (x)) << 4)
 #define PA6_RG_U2_SQTH			(0xf << 0)
 #define PA6_RG_U2_SQTH_VAL(x)		((0xf & (x)) << 0)
 
diff --git a/src/soc/mediatek/common/usb.c b/src/soc/mediatek/common/usb.c
index dcb93073b7..328bf66e0f 100644
--- a/src/soc/mediatek/common/usb.c
+++ b/src/soc/mediatek/common/usb.c
@@ -76,6 +76,10 @@ static void phy_index_power_on(int index)
 	/* Set USB 2.0 slew rate value */
 	clrsetbits_le32(&phy->u2phy.usbphyacr5,
 		PA5_RG_U2_HSTX_SRCTRL, PA5_RG_U2_HSTX_SRCTRL_VAL(4));
+
+	/* Set USB 2.0 disconnect threshold */
+	clrsetbits_le32(&phy->u2phy.usbphyacr6,
+		PA6_RG_U2_DISCTH, PA6_RG_U2_DISCTH_VAL(15));
 }
 
 static void u3phy_power_on(void)