4 files changed, 13 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index e34ef90..885d8e5 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1115,6 +1115,8 @@ static void dwc3_get_properties(struct dwc3 *dwc)
 
 	dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
 				"snps,tx_de_emphasis_quirk");
+	dwc->disable_devinit_u1u2_quirk = device_property_read_bool(dev,
+				"snps,disable_devinit_u1u2");
 	device_property_read_u8(dev, "snps,tx_de_emphasis",
 				&tx_de_emphasis);
 	device_property_read_string(dev, "snps,hsphy_interface",
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 9151eef..2549339 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -860,6 +860,7 @@ struct dwc3_scratchpad_array {
  * 	1	- -3.5dB de-emphasis
  * 	2	- No de-emphasis
  * 	3	- Reserved
+ * @disable_devinit_u1u2_quirk: disable device-initiated U1/U2 request.
  */
 struct dwc3 {
 	struct usb_ctrlrequest	*ctrl_req;
@@ -1016,6 +1017,7 @@ struct dwc3 {
 
 	unsigned		tx_de_emphasis_quirk:1;
 	unsigned		tx_de_emphasis:2;
+	unsigned		disable_devinit_u1u2_quirk:1;
 
 	u16                     imod_interval;
 };
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 2331469..4e6c1bb 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -360,9 +360,9 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
 		if ((dwc->speed == DWC3_DSTS_SUPERSPEED) ||
 		    (dwc->speed == DWC3_DSTS_SUPERSPEED_PLUS)) {
 			reg = dwc3_readl(dwc->regs, DWC3_DCTL);
-			if (reg & DWC3_DCTL_INITU1ENA)
+			if ((reg & DWC3_DCTL_INITU1ENA) && !dwc->disable_devinit_u1u2_quirk)
 				usb_status |= 1 << USB_DEV_STAT_U1_ENABLED;
-			if (reg & DWC3_DCTL_INITU2ENA)
+			if ((reg & DWC3_DCTL_INITU2ENA) && !dwc->disable_devinit_u1u2_quirk)
 				usb_status |= 1 << USB_DEV_STAT_U2_ENABLED;
 		}
 
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index c61ddbf..51c86aa 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2930,6 +2930,7 @@ static irqreturn_t dwc3_interrupt(int irq, void *_evt)
 int dwc3_gadget_init(struct dwc3 *dwc)
 {
 	int ret, irq;
+	u32	reg;
 	struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
 
 	irq = platform_get_irq_byname(dwc3_pdev, "peripheral");
@@ -3044,6 +3045,12 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 		goto err5;
 	}
 
+	if (dwc->disable_devinit_u1u2_quirk) {
+		reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+		reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA);
+		dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+	}
+
 	return 0;
 
 err5: