diff --git a/Documentation/devicetree/bindings/phy/no-op.txt b/Documentation/devicetree/bindings/phy/no-op.txt
new file mode 100644
index 0000000..a338112
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/no-op.txt
@@ -0,0 +1,16 @@
+NOP PHY driver
+
+This driver is used to stub PHY operations in a driver (USB, SATA).
+This is useful when the 'client' driver (USB, SATA, ...) uses the PHY framework
+and there is no actual PHY harwdare to drive.
+
+Required properties:
+- compatible     : must contain "nop-phy"
+- #phy-cells     : must contain <0>
+
+Example:
+
+nop_phy {
+	compatible = "nop-phy";
+	#phy-cells = <0>;
+};
diff --git a/arch/arm/include/asm/ehci-omap.h b/arch/arm/include/asm/ehci-omap.h
index 5a53e40..9dbb2c4 100644
--- a/arch/arm/include/asm/ehci-omap.h
+++ b/arch/arm/include/asm/ehci-omap.h
@@ -19,11 +19,7 @@
 	OMAP_EHCI_PORT_MODE_HSIC,
 };
 
-#ifdef CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS
-#define OMAP_HS_USB_PORTS	CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS
-#else
 #define OMAP_HS_USB_PORTS	3
-#endif
 
 #define is_ehci_phy_mode(x)	((x) == OMAP_EHCI_PORT_MODE_PHY)
 #define is_ehci_tll_mode(x)	((x) == OMAP_EHCI_PORT_MODE_TLL)
diff --git a/arch/x86/dts/minnowmax.dts b/arch/x86/dts/minnowmax.dts
index 4c0a8fe..a0ad03c 100644
--- a/arch/x86/dts/minnowmax.dts
+++ b/arch/x86/dts/minnowmax.dts
@@ -272,6 +272,9 @@
 		fsp,enable-spi;
 		fsp,enable-sata;
 		fsp,sata-mode = <SATA_MODE_AHCI>;
+#ifdef CONFIG_USB_XHCI_HCD
+		fsp,enable-xhci;
+#endif
 		fsp,lpe-mode = <LPE_MODE_PCI>;
 		fsp,lpss-sio-mode = <LPSS_SIO_MODE_PCI>;
 		fsp,enable-dma0;
diff --git a/cmd/usb.c b/cmd/usb.c
index 4fa456e..992d414 100644
--- a/cmd/usb.c
+++ b/cmd/usb.c
@@ -150,6 +150,8 @@
 
 static void usb_display_desc(struct usb_device *dev)
 {
+	uint packet_size = dev->descriptor.bMaxPacketSize0;
+
 	if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
 		printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
 		usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
@@ -171,9 +173,10 @@
 			       usb_get_class_desc(
 				dev->config.if_desc[0].desc.bInterfaceClass));
 		}
+		if (dev->descriptor.bcdUSB >= cpu_to_le16(0x0300))
+			packet_size = 1 << packet_size;
 		printf(" - PacketSize: %d  Configurations: %d\n",
-			dev->descriptor.bMaxPacketSize0,
-			dev->descriptor.bNumConfigurations);
+			packet_size, dev->descriptor.bNumConfigurations);
 		printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
 			dev->descriptor.idVendor, dev->descriptor.idProduct,
 			(dev->descriptor.bcdDevice>>8) & 0xff,
diff --git a/common/usb_hub.c b/common/usb_hub.c
index d135526..70bc6e2 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -55,9 +55,6 @@
 	struct list_head list;
 };
 
-/* TODO(sjg@chromium.org): Remove this when CONFIG_DM_USB is defined */
-static struct usb_hub_device hub_dev[USB_MAX_HUB];
-static int usb_hub_index;
 static LIST_HEAD(usb_scan_list);
 
 __weak void usb_hub_reset_devices(int port)
@@ -65,11 +62,41 @@
 	return;
 }
 
+static inline bool usb_hub_is_superspeed(struct usb_device *hdev)
+{
+	return hdev->descriptor.bDeviceProtocol == 3;
+}
+
+#ifdef CONFIG_DM_USB
+bool usb_hub_is_root_hub(struct udevice *hub)
+{
+	if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
+		return true;
+
+	return false;
+}
+
+static int usb_set_hub_depth(struct usb_device *dev, int depth)
+{
+	if (depth < 0 || depth > 4)
+		return -EINVAL;
+
+	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+		USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
+		depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+#endif
+
 static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
 {
+	unsigned short dtype = USB_DT_HUB;
+
+	if (usb_hub_is_superspeed(dev))
+		dtype = USB_DT_SS_HUB;
+
 	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 		USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
-		USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT);
+		dtype << 8, 0, data, size, USB_CNTL_TIMEOUT);
 }
 
 static int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
@@ -95,9 +122,40 @@
 
 int usb_get_port_status(struct usb_device *dev, int port, void *data)
 {
-	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+	int ret;
+
+	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 			USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
-			data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+			data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
+
+#ifdef CONFIG_DM_USB
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Translate the USB 3.0 hub port status field into the old version
+	 * that U-Boot understands. Do this only when the hub is not root hub.
+	 * For root hub, the port status field has already been translated
+	 * in the host controller driver (see xhci_submit_root() in xhci.c).
+	 *
+	 * Note: this only supports driver model.
+	 */
+
+	if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
+		struct usb_port_status *status = (struct usb_port_status *)data;
+		u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK;
+
+		if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
+			tmp |= USB_PORT_STAT_POWER;
+		if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
+		    USB_SS_PORT_STAT_SPEED_5GBPS)
+			tmp |= USB_PORT_STAT_SUPER_SPEED;
+
+		status->wPortStatus = tmp;
+	}
+#endif
+
+	return ret;
 }
 
 
@@ -154,6 +212,10 @@
 	      max(100, (int)pgood_delay) + 1000);
 }
 
+#ifndef CONFIG_DM_USB
+static struct usb_hub_device hub_dev[USB_MAX_HUB];
+static int usb_hub_index;
+
 void usb_hub_reset(void)
 {
 	usb_hub_index = 0;
@@ -170,6 +232,7 @@
 	printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB);
 	return NULL;
 }
+#endif
 
 #define MAX_TRIES 5
 
@@ -195,8 +258,18 @@
 	return speed_str;
 }
 
-int legacy_hub_port_reset(struct usb_device *dev, int port,
-			unsigned short *portstat)
+/**
+ * usb_hub_port_reset() - reset a port given its usb_device pointer
+ *
+ * Reset a hub port and see if a device is present on that port, providing
+ * sufficient time for it to show itself. The port status is returned.
+ *
+ * @dev:	USB device to reset
+ * @port:	Port number to reset (note ports are numbered from 0 here)
+ * @portstat:	Returns port status
+ */
+static int usb_hub_port_reset(struct usb_device *dev, int port,
+			      unsigned short *portstat)
 {
 	int err, tries;
 	ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
@@ -269,15 +342,6 @@
 	return 0;
 }
 
-#ifdef CONFIG_DM_USB
-int hub_port_reset(struct udevice *dev, int port, unsigned short *portstat)
-{
-	struct usb_device *udev = dev_get_parent_priv(dev);
-
-	return legacy_hub_port_reset(udev, port, portstat);
-}
-#endif
-
 int usb_hub_port_connect_change(struct usb_device *dev, int port)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
@@ -311,7 +375,7 @@
 	}
 
 	/* Reset the port */
-	ret = legacy_hub_port_reset(dev, port, &portstatus);
+	ret = usb_hub_port_reset(dev, port, &portstatus);
 	if (ret < 0) {
 		if (ret != -ENXIO)
 			printf("cannot reset port %i!?\n", port + 1);
@@ -405,8 +469,15 @@
 	portchange = le16_to_cpu(portsts->wPortChange);
 	debug("Port %d Status %X Change %X\n", i + 1, portstatus, portchange);
 
-	/* No connection change happened, wait a bit more. */
-	if (!(portchange & USB_PORT_STAT_C_CONNECTION)) {
+	/*
+	 * No connection change happened, wait a bit more.
+	 *
+	 * For some situation, the hub reports no connection change but a
+	 * device is connected to the port (eg: CCS bit is set but CSC is not
+	 * in the PORTSC register of a root hub), ignore such case.
+	 */
+	if (!(portchange & USB_PORT_STAT_C_CONNECTION) &&
+	    !(portstatus & USB_PORT_STAT_CONNECTION)) {
 		if (get_timer(0) >= hub->connect_timeout) {
 			debug("devnum=%d port=%d: timeout\n",
 			      dev->devnum, i + 1);
@@ -418,10 +489,6 @@
 		return 0;
 	}
 
-	/* Test if the connection came up, and if not exit */
-	if (!(portstatus & USB_PORT_STAT_CONNECTION))
-		return 0;
-
 	/* A new USB device is ready at this point */
 	debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
 
@@ -530,6 +597,20 @@
 	return ret;
 }
 
+static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev)
+{
+	struct usb_hub_device *hub;
+
+#ifndef CONFIG_DM_USB
+	/* "allocate" Hub device */
+	hub = usb_hub_allocate();
+#else
+	hub = dev_get_uclass_priv(dev->dev);
+#endif
+
+	return hub;
+}
+
 static int usb_hub_configure(struct usb_device *dev)
 {
 	int i, length;
@@ -541,11 +622,11 @@
 	__maybe_unused struct usb_hub_status *hubsts;
 	int ret;
 
-	/* "allocate" Hub device */
-	hub = usb_hub_allocate();
+	hub = usb_get_hub_device(dev);
 	if (hub == NULL)
 		return -ENOMEM;
 	hub->pusb_dev = dev;
+
 	/* Get the the hub descriptor */
 	ret = usb_get_hub_descriptor(dev, buffer, 4);
 	if (ret < 0) {
@@ -570,17 +651,19 @@
 			&descriptor->wHubCharacteristics)),
 			&hub->desc.wHubCharacteristics);
 	/* set the bitmap */
-	bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0];
+	bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0];
 	/* devices not removable by default */
 	memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8);
-	bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0];
+	bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0];
 	memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */
 
 	for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
-		hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i];
+		hub->desc.u.hs.DeviceRemovable[i] =
+			descriptor->u.hs.DeviceRemovable[i];
 
 	for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
-		hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i];
+		hub->desc.u.hs.PortPowerCtrlMask[i] =
+			descriptor->u.hs.PortPowerCtrlMask[i];
 
 	dev->maxchild = descriptor->bNbrPorts;
 	debug("%d ports detected\n", dev->maxchild);
@@ -617,6 +700,56 @@
 		break;
 	}
 
+	switch (dev->descriptor.bDeviceProtocol) {
+	case USB_HUB_PR_FS:
+		break;
+	case USB_HUB_PR_HS_SINGLE_TT:
+		debug("Single TT\n");
+		break;
+	case USB_HUB_PR_HS_MULTI_TT:
+		ret = usb_set_interface(dev, 0, 1);
+		if (ret == 0) {
+			debug("TT per port\n");
+			hub->tt.multi = true;
+		} else {
+			debug("Using single TT (err %d)\n", ret);
+		}
+		break;
+	case USB_HUB_PR_SS:
+		/* USB 3.0 hubs don't have a TT */
+		break;
+	default:
+		debug("Unrecognized hub protocol %d\n",
+		      dev->descriptor.bDeviceProtocol);
+		break;
+	}
+
+	/* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
+	switch (hubCharacteristics & HUB_CHAR_TTTT) {
+	case HUB_TTTT_8_BITS:
+		if (dev->descriptor.bDeviceProtocol != 0) {
+			hub->tt.think_time = 666;
+			debug("TT requires at most %d FS bit times (%d ns)\n",
+			      8, hub->tt.think_time);
+		}
+		break;
+	case HUB_TTTT_16_BITS:
+		hub->tt.think_time = 666 * 2;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      16, hub->tt.think_time);
+		break;
+	case HUB_TTTT_24_BITS:
+		hub->tt.think_time = 666 * 3;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      24, hub->tt.think_time);
+		break;
+	case HUB_TTTT_32_BITS:
+		hub->tt.think_time = 666 * 4;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      32, hub->tt.think_time);
+		break;
+	}
+
 	debug("power on to power good time: %dms\n",
 	      descriptor->bPwrOn2PwrGood * 2);
 	debug("hub controller current requirement: %dmA\n",
@@ -624,7 +757,7 @@
 
 	for (i = 0; i < dev->maxchild; i++)
 		debug("port %d is%s removable\n", i + 1,
-		      hub->desc.DeviceRemovable[(i + 1) / 8] & \
+		      hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \
 		      (1 << ((i + 1) % 8)) ? " not" : "");
 
 	if (sizeof(struct usb_hub_status) > USB_BUFSIZ) {
@@ -653,6 +786,59 @@
 	debug("%sover-current condition exists\n",
 	      (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
 	      "" : "no ");
+
+#ifdef CONFIG_DM_USB
+	/*
+	 * Update USB host controller's internal representation of this hub
+	 * after the hub descriptor is fetched.
+	 */
+	ret = usb_update_hub_device(dev);
+	if (ret < 0 && ret != -ENOSYS) {
+		debug("%s: failed to update hub device for HCD (%x)\n",
+		      __func__, ret);
+		return ret;
+	}
+
+	/*
+	 * A maximum of seven tiers are allowed in a USB topology, and the
+	 * root hub occupies the first tier. The last tier ends with a normal
+	 * USB device. USB 3.0 hubs use a 20-bit field called 'route string'
+	 * to route packets to the designated downstream port. The hub uses a
+	 * hub depth value multiplied by four as an offset into the 'route
+	 * string' to locate the bits it uses to determine the downstream
+	 * port number.
+	 */
+	if (usb_hub_is_root_hub(dev->dev)) {
+		hub->hub_depth = -1;
+	} else {
+		struct udevice *hdev;
+		int depth = 0;
+
+		hdev = dev->dev->parent;
+		while (!usb_hub_is_root_hub(hdev)) {
+			depth++;
+			hdev = hdev->parent;
+		}
+
+		hub->hub_depth = depth;
+
+		if (usb_hub_is_superspeed(dev)) {
+			debug("set hub (%p) depth to %d\n", dev, depth);
+			/*
+			 * This request sets the value that the hub uses to
+			 * determine the index into the 'route string index'
+			 * for this hub.
+			 */
+			ret = usb_set_hub_depth(dev, depth);
+			if (ret < 0) {
+				debug("%s: failed to set hub depth (%lX)\n",
+				      __func__, dev->status);
+				return ret;
+			}
+		}
+	}
+#endif
+
 	usb_hub_power_on(hub);
 
 	/*
@@ -777,6 +963,7 @@
 	.child_pre_probe	= usb_child_pre_probe,
 	.per_child_auto_alloc_size = sizeof(struct usb_device),
 	.per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata),
+	.per_device_auto_alloc_size = sizeof(struct usb_hub_device),
 };
 
 static const struct usb_device_id hub_id_table[] = {
diff --git a/configs/minnowmax_defconfig b/configs/minnowmax_defconfig
index 81e8253..d058753 100644
--- a/configs/minnowmax_defconfig
+++ b/configs/minnowmax_defconfig
@@ -69,6 +69,7 @@
 CONFIG_TIMER=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
+CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_KEYBOARD=y
 CONFIG_DM_VIDEO=y
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 83b6328..e68d927 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -65,6 +65,8 @@
 	debug("%s(dev=%p, index=%d, clk=%p)\n", __func__, dev, index, clk);
 
 	assert(clk);
+	clk->dev = NULL;
+
 	ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0,
 					  index, &args);
 	if (ret) {
@@ -102,6 +104,7 @@
 	int index;
 
 	debug("%s(dev=%p, name=%s, clk=%p)\n", __func__, dev, name, clk);
+	clk->dev = NULL;
 
 	index = dev_read_stringlist_search(dev, "clock-names", name);
 	if (index < 0) {
@@ -111,6 +114,30 @@
 
 	return clk_get_by_index(dev, index, clk);
 }
+
+int clk_release_all(struct clk *clk, int count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		debug("%s(clk[%d]=%p)\n", __func__, i, &clk[i]);
+
+		/* check if clock has been previously requested */
+		if (!clk[i].dev)
+			continue;
+
+		ret = clk_disable(&clk[i]);
+		if (ret && ret != -ENOSYS)
+			return ret;
+
+		ret = clk_free(&clk[i]);
+		if (ret && ret != -ENOSYS)
+			return ret;
+	}
+
+	return 0;
+}
+
 #endif /* OF_CONTROL */
 
 int clk_request(struct udevice *dev, struct clk *clk)
diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c
index 2bb23ee..c31cba7 100644
--- a/drivers/core/of_access.c
+++ b/drivers/core/of_access.c
@@ -665,6 +665,13 @@
 					    index, out_args);
 }
 
+int of_count_phandle_with_args(const struct device_node *np,
+			       const char *list_name, const char *cells_name)
+{
+	return __of_parse_phandle_with_args(np, list_name, cells_name, 0,
+					    -1, NULL);
+}
+
 static void of_alias_add(struct alias_prop *ap, struct device_node *np,
 			 int id, const char *stem, int stem_len)
 {
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index c3fb0ae..c1a2e9f 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -315,6 +315,18 @@
 	return 0;
 }
 
+int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
+				   const char *cells_name)
+{
+	if (ofnode_is_np(node))
+		return of_count_phandle_with_args(ofnode_to_np(node),
+				list_name, cells_name);
+	else
+		return fdtdec_parse_phandle_with_args(gd->fdt_blob,
+				ofnode_to_offset(node), list_name, cells_name,
+				0, -1, NULL);
+}
+
 ofnode ofnode_path(const char *path)
 {
 	if (of_live_active())
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index ceb33e3..f6281f4 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -165,18 +165,48 @@
 	return ret;
 }
 
-void dfu_write_transaction_cleanup(struct dfu_entity *dfu)
+void dfu_transaction_cleanup(struct dfu_entity *dfu)
 {
 	/* clear everything */
 	dfu->crc = 0;
 	dfu->offset = 0;
 	dfu->i_blk_seq_num = 0;
-	dfu->i_buf_start = dfu_buf;
-	dfu->i_buf_end = dfu_buf;
+	dfu->i_buf_start = dfu_get_buf(dfu);
+	dfu->i_buf_end = dfu->i_buf_start;
 	dfu->i_buf = dfu->i_buf_start;
+	dfu->r_left = 0;
+	dfu->b_left = 0;
+	dfu->bad_skip = 0;
+
 	dfu->inited = 0;
 }
 
+int dfu_transaction_initiate(struct dfu_entity *dfu, bool read)
+{
+	int ret = 0;
+
+	if (dfu->inited)
+		return 0;
+
+	dfu_transaction_cleanup(dfu);
+
+	if (dfu->i_buf_start == NULL)
+		return -ENOMEM;
+
+	dfu->i_buf_end = dfu->i_buf_start + dfu_get_buf_size();
+
+	if (read) {
+		ret = dfu->get_medium_size(dfu, &dfu->r_left);
+		if (ret < 0)
+			return ret;
+		debug("%s: %s %lld [B]\n", __func__, dfu->name, dfu->r_left);
+	}
+
+	dfu->inited = 1;
+
+	return 0;
+}
+
 int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
 {
 	int ret = 0;
@@ -192,7 +222,7 @@
 		printf("\nDFU complete %s: 0x%08x\n", dfu_hash_algo->name,
 		       dfu->crc);
 
-	dfu_write_transaction_cleanup(dfu);
+	dfu_transaction_cleanup(dfu);
 
 	return ret;
 }
@@ -205,25 +235,14 @@
 	      __func__, dfu->name, buf, size, blk_seq_num, dfu->offset,
 	      (unsigned long)(dfu->i_buf - dfu->i_buf_start));
 
-	if (!dfu->inited) {
-		/* initial state */
-		dfu->crc = 0;
-		dfu->offset = 0;
-		dfu->bad_skip = 0;
-		dfu->i_blk_seq_num = 0;
-		dfu->i_buf_start = dfu_get_buf(dfu);
-		if (dfu->i_buf_start == NULL)
-			return -ENOMEM;
-		dfu->i_buf_end = dfu_get_buf(dfu) + dfu_buf_size;
-		dfu->i_buf = dfu->i_buf_start;
-
-		dfu->inited = 1;
-	}
+	ret = dfu_transaction_initiate(dfu, false);
+	if (ret < 0)
+		return ret;
 
 	if (dfu->i_blk_seq_num != blk_seq_num) {
 		printf("%s: Wrong sequence number! [%d] [%d]\n",
 		       __func__, dfu->i_blk_seq_num, blk_seq_num);
-		dfu_write_transaction_cleanup(dfu);
+		dfu_transaction_cleanup(dfu);
 		return -1;
 	}
 
@@ -247,7 +266,7 @@
 	if ((dfu->i_buf + size) > dfu->i_buf_end) {
 		ret = dfu_write_buffer_drain(dfu);
 		if (ret) {
-			dfu_write_transaction_cleanup(dfu);
+			dfu_transaction_cleanup(dfu);
 			return ret;
 		}
 	}
@@ -256,7 +275,7 @@
 	if ((dfu->i_buf + size) > dfu->i_buf_end) {
 		error("Buffer overflow! (0x%p + 0x%x > 0x%p)\n", dfu->i_buf,
 		      size, dfu->i_buf_end);
-		dfu_write_transaction_cleanup(dfu);
+		dfu_transaction_cleanup(dfu);
 		return -1;
 	}
 
@@ -267,7 +286,7 @@
 	if (size == 0 || (dfu->i_buf + size) > dfu->i_buf_end) {
 		ret = dfu_write_buffer_drain(dfu);
 		if (ret) {
-			dfu_write_transaction_cleanup(dfu);
+			dfu_transaction_cleanup(dfu);
 			return ret;
 		}
 	}
@@ -334,28 +353,9 @@
 	debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x i_buf: 0x%p\n",
 	       __func__, dfu->name, buf, size, blk_seq_num, dfu->i_buf);
 
-	if (!dfu->inited) {
-		dfu->i_buf_start = dfu_get_buf(dfu);
-		if (dfu->i_buf_start == NULL)
-			return -ENOMEM;
-
-		dfu->r_left = dfu->get_medium_size(dfu);
-		if (dfu->r_left < 0)
-			return dfu->r_left;
-
-		debug("%s: %s %ld [B]\n", __func__, dfu->name, dfu->r_left);
-
-		dfu->i_blk_seq_num = 0;
-		dfu->crc = 0;
-		dfu->offset = 0;
-		dfu->i_buf_end = dfu_get_buf(dfu) + dfu_buf_size;
-		dfu->i_buf = dfu->i_buf_start;
-		dfu->b_left = 0;
-
-		dfu->bad_skip = 0;
-
-		dfu->inited = 1;
-	}
+	ret = dfu_transaction_initiate(dfu, true);
+	if (ret < 0)
+		return ret;
 
 	if (dfu->i_blk_seq_num != blk_seq_num) {
 		printf("%s: Wrong sequence number! [%d] [%d]\n",
@@ -377,17 +377,7 @@
 			      dfu_hash_algo->name, dfu->crc);
 		puts("\nUPLOAD ... done\nCtrl+C to exit ...\n");
 
-		dfu->i_blk_seq_num = 0;
-		dfu->crc = 0;
-		dfu->offset = 0;
-		dfu->i_buf_start = dfu_buf;
-		dfu->i_buf_end = dfu_buf;
-		dfu->i_buf = dfu->i_buf_start;
-		dfu->b_left = 0;
-
-		dfu->bad_skip = 0;
-
-		dfu->inited = 0;
+		dfu_transaction_cleanup(dfu);
 	}
 
 	return ret;
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index 926ccbd..bb23e7f 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -17,7 +17,7 @@
 #include <mmc.h>
 
 static unsigned char *dfu_file_buf;
-static long dfu_file_buf_len;
+static u64 dfu_file_buf_len;
 static long dfu_file_buf_filled;
 
 static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
@@ -107,7 +107,7 @@
 }
 
 static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
-			void *buf, long *len)
+			void *buf, u64 *len)
 {
 	const char *fsname, *opname;
 	char cmd_buf[DFU_CMD_BUF_SIZE];
@@ -150,7 +150,7 @@
 	sprintf(cmd_buf + strlen(cmd_buf), " %s", dfu->name);
 
 	if (op == DFU_OP_WRITE)
-		sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);
+		sprintf(cmd_buf + strlen(cmd_buf), " %llx", *len);
 
 	debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
 
@@ -209,23 +209,23 @@
 	return ret;
 }
 
-long dfu_get_medium_size_mmc(struct dfu_entity *dfu)
+int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size)
 {
 	int ret;
-	long len;
 
 	switch (dfu->layout) {
 	case DFU_RAW_ADDR:
-		return dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
+		*size = dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
+		return 0;
 	case DFU_FS_FAT:
 	case DFU_FS_EXT4:
 		dfu_file_buf_filled = -1;
-		ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, &len);
+		ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, size);
 		if (ret < 0)
 			return ret;
-		if (len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
+		if (*size > CONFIG_SYS_DFU_MAX_FILE_SIZE)
 			return -1;
-		return len;
+		return 0;
 	default:
 		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
 		       dfu_get_layout(dfu->layout));
@@ -237,7 +237,7 @@
 			     long *len)
 {
 	int ret;
-	long file_len;
+	u64 file_len;
 
 	if (dfu_file_buf_filled == -1) {
 		ret = mmc_file_op(DFU_OP_READ, dfu, dfu_file_buf, &file_len);
diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c
index 97cd608..6dc9ff7 100644
--- a/drivers/dfu/dfu_nand.c
+++ b/drivers/dfu/dfu_nand.c
@@ -114,9 +114,11 @@
 	return ret;
 }
 
-long dfu_get_medium_size_nand(struct dfu_entity *dfu)
+int dfu_get_medium_size_nand(struct dfu_entity *dfu, u64 *size)
 {
-	return dfu->data.nand.size;
+	*size = dfu->data.nand.size;
+
+	return 0;
 }
 
 static int dfu_read_medium_nand(struct dfu_entity *dfu, u64 offset, void *buf,
diff --git a/drivers/dfu/dfu_ram.c b/drivers/dfu/dfu_ram.c
index c1b0021..6e3f531 100644
--- a/drivers/dfu/dfu_ram.c
+++ b/drivers/dfu/dfu_ram.c
@@ -41,9 +41,11 @@
 	return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len);
 }
 
-long dfu_get_medium_size_ram(struct dfu_entity *dfu)
+int dfu_get_medium_size_ram(struct dfu_entity *dfu, u64 *size)
 {
-	return dfu->data.ram.size;
+	*size = dfu->data.ram.size;
+
+	return 0;
 }
 
 static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset,
diff --git a/drivers/dfu/dfu_sf.c b/drivers/dfu/dfu_sf.c
index b6d5fe2..2d2586d 100644
--- a/drivers/dfu/dfu_sf.c
+++ b/drivers/dfu/dfu_sf.c
@@ -12,9 +12,11 @@
 #include <spi.h>
 #include <spi_flash.h>
 
-static long dfu_get_medium_size_sf(struct dfu_entity *dfu)
+static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
 {
-	return dfu->data.sf.size;
+	*size = dfu->data.sf.size;
+
+	return 0;
 }
 
 static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 7841554..98f2a1b 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -41,6 +41,24 @@
 	  This select a dummy sandbox PHY driver. It used only to implement
 	  the unit tests for the phy framework
 
+config NOP_PHY
+	bool "NOP PHY driver"
+	depends on PHY
+	help
+	  Support for a no-op PHY driver (stubbed PHY driver).
+
+	  This is useful when a driver uses the PHY framework but no real PHY
+	  hardware exists.
+
+config SPL_NOP_PHY
+	bool "NOP PHY driver in SPL"
+	depends on SPL_PHY
+	help
+	  Support for a no-op PHY driver (stubbed PHY driver) in the SPL.
+
+	  This is useful when a driver uses the PHY framework but no real PHY
+	  hardware exists.
+
 config PIPE3_PHY
 	bool "Support omap's PIPE3 PHY"
 	depends on PHY && ARCH_OMAP2PLUS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 6ce96d2..ab56c46 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -6,5 +6,6 @@
 #
 
 obj-$(CONFIG_$(SPL_)PHY) += phy-uclass.o
+obj-$(CONFIG_$(SPL_)NOP_PHY) += nop-phy.o
 obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o
 obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o
diff --git a/drivers/phy/nop-phy.c b/drivers/phy/nop-phy.c
new file mode 100644
index 0000000..2201cc3
--- /dev/null
+++ b/drivers/phy/nop-phy.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Written by Jean-Jacques Hiblot  <jjhiblot@ti.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/device.h>
+#include <generic-phy.h>
+
+static const struct udevice_id nop_phy_ids[] = {
+	{ .compatible = "nop-phy" },
+	{ }
+};
+
+static struct phy_ops nop_phy_ops = {
+};
+
+U_BOOT_DRIVER(nop_phy) = {
+	.name	= "nop_phy",
+	.id	= UCLASS_PHY,
+	.of_match = nop_phy_ids,
+	.ops = &nop_phy_ops,
+};
diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c
index d8b8d58..68e518f 100644
--- a/drivers/phy/phy-uclass.c
+++ b/drivers/phy/phy-uclass.c
@@ -45,6 +45,7 @@
 	debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
 
 	assert(phy);
+	phy->dev = NULL;
 	ret = dev_read_phandle_with_args(dev, "phys", "#phy-cells", 0, index,
 					 &args);
 	if (ret) {
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
index de3695f..307a297 100644
--- a/drivers/reset/reset-uclass.c
+++ b/drivers/reset/reset-uclass.c
@@ -42,6 +42,7 @@
 
 	debug("%s(dev=%p, index=%d, reset_ctl=%p)\n", __func__, dev, index,
 	      reset_ctl);
+	reset_ctl->dev = NULL;
 
 	ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0,
 					  index, &args);
@@ -87,6 +88,7 @@
 
 	debug("%s(dev=%p, name=%s, reset_ctl=%p)\n", __func__, dev, name,
 	      reset_ctl);
+	reset_ctl->dev = NULL;
 
 	index = dev_read_stringlist_search(dev, "reset-names", name);
 	if (index < 0) {
@@ -97,6 +99,15 @@
 	return reset_get_by_index(dev, index, reset_ctl);
 }
 
+int reset_request(struct reset_ctl *reset_ctl)
+{
+	struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
+
+	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
+
+	return ops->request(reset_ctl);
+}
+
 int reset_free(struct reset_ctl *reset_ctl)
 {
 	struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
@@ -124,6 +135,29 @@
 	return ops->rst_deassert(reset_ctl);
 }
 
+int reset_release_all(struct reset_ctl *reset_ctl, int count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		debug("%s(reset_ctl[%d]=%p)\n", __func__, i, &reset_ctl[i]);
+
+		/* check if reset has been previously requested */
+		if (!reset_ctl[i].dev)
+			continue;
+
+		ret = reset_assert(&reset_ctl[i]);
+		if (ret)
+			return ret;
+
+		ret = reset_free(&reset_ctl[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 UCLASS_DRIVER(reset) = {
 	.id		= UCLASS_RESET,
 	.name		= "reset",
diff --git a/drivers/usb/emul/sandbox_hub.c b/drivers/usb/emul/sandbox_hub.c
index 9ffda9c..1432858 100644
--- a/drivers/usb/emul/sandbox_hub.c
+++ b/drivers/usb/emul/sandbox_hub.c
@@ -96,7 +96,12 @@
 								1 << 7),
 	.bPwrOn2PwrGood		= 2,
 	.bHubContrCurrent	= 5,
-	.DeviceRemovable	= {0, 0xff}, /* all ports removeable */
+	{
+		{
+			/* all ports removeable */
+			.DeviceRemovable	= {0, 0xff}
+		}
+	}
 #if SANDBOX_NUM_PORTS > 8
 #error "This code sets up an incorrect mask"
 #endif
diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
index a60e948..cd4d9e6 100644
--- a/drivers/usb/gadget/f_thor.c
+++ b/drivers/usb/gadget/f_thor.c
@@ -891,6 +891,7 @@
 	}
 
 	if (dev->out_ep->driver_data) {
+		free(dev->out_req->buf);
 		dev->out_req->buf = NULL;
 		usb_ep_free_request(dev->out_ep, dev->out_req);
 		usb_ep_disable(dev->out_ep);
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index bc2c1f1..67ad72b 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -31,6 +31,13 @@
 	  SoCs, which includes Armada8K, Armada3700 and other Armada
 	  family SoCs.
 
+config USB_XHCI_PCI
+	bool "Support for PCI-based xHCI USB controller"
+	depends on DM_USB
+	default y if X86
+	help
+	  Enables support for the PCI-based xHCI controller.
+
 config USB_XHCI_ROCKCHIP
 	bool "Support for Rockchip on-chip xHCI USB controller"
 	depends on ARCH_ROCKCHIP
diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c
index fb78462..03f8d32 100644
--- a/drivers/usb/host/ehci-generic.c
+++ b/drivers/usb/host/ehci-generic.c
@@ -6,6 +6,8 @@
 
 #include <common.h>
 #include <clk.h>
+#include <dm/ofnode.h>
+#include <generic-phy.h>
 #include <reset.h>
 #include <asm/io.h>
 #include <dm.h>
@@ -18,43 +20,143 @@
  */
 struct generic_ehci {
 	struct ehci_ctrl ctrl;
+	struct clk *clocks;
+	struct reset_ctl *resets;
+	struct phy phy;
+	int clock_count;
+	int reset_count;
 };
 
 static int ehci_usb_probe(struct udevice *dev)
 {
+	struct generic_ehci *priv = dev_get_priv(dev);
 	struct ehci_hccr *hccr;
 	struct ehci_hcor *hcor;
-	int i;
+	int i, err, ret, clock_nb, reset_nb;
 
-	for (i = 0; ; i++) {
-		struct clk clk;
-		int ret;
+	err = 0;
+	priv->clock_count = 0;
+	clock_nb = ofnode_count_phandle_with_args(dev_ofnode(dev), "clocks",
+						  "#clock-cells");
+	if (clock_nb > 0) {
+		priv->clocks = devm_kcalloc(dev, clock_nb, sizeof(struct clk),
+					    GFP_KERNEL);
+		if (!priv->clocks)
+			return -ENOMEM;
 
-		ret = clk_get_by_index(dev, i, &clk);
-		if (ret < 0)
-			break;
-		if (clk_enable(&clk))
-			printf("failed to enable clock %d\n", i);
-		clk_free(&clk);
+		for (i = 0; i < clock_nb; i++) {
+			err = clk_get_by_index(dev, i, &priv->clocks[i]);
+
+			if (err < 0)
+				break;
+			err = clk_enable(&priv->clocks[i]);
+			if (err) {
+				error("failed to enable clock %d\n", i);
+				clk_free(&priv->clocks[i]);
+				goto clk_err;
+			}
+			priv->clock_count++;
+		}
+	} else {
+		if (clock_nb != -ENOENT) {
+			error("failed to get clock phandle(%d)\n", clock_nb);
+			return clock_nb;
+		}
 	}
 
-	for (i = 0; ; i++) {
-		struct reset_ctl reset;
-		int ret;
+	priv->reset_count = 0;
+	reset_nb = ofnode_count_phandle_with_args(dev_ofnode(dev), "resets",
+						  "#reset-cells");
+	if (reset_nb > 0) {
+		priv->resets = devm_kcalloc(dev, reset_nb,
+					    sizeof(struct reset_ctl),
+					    GFP_KERNEL);
+		if (!priv->resets)
+			return -ENOMEM;
 
-		ret = reset_get_by_index(dev, i, &reset);
-		if (ret < 0)
-			break;
-		if (reset_deassert(&reset))
-			printf("failed to deassert reset %d\n", i);
-		reset_free(&reset);
+		for (i = 0; i < reset_nb; i++) {
+			err = reset_get_by_index(dev, i, &priv->resets[i]);
+			if (err < 0)
+				break;
+
+			if (reset_deassert(&priv->resets[i])) {
+				error("failed to deassert reset %d\n", i);
+				reset_free(&priv->resets[i]);
+				goto reset_err;
+			}
+			priv->reset_count++;
+		}
+	} else {
+		if (reset_nb != -ENOENT) {
+			error("failed to get reset phandle(%d)\n", reset_nb);
+			goto clk_err;
+		}
+	}
+
+	err = generic_phy_get_by_index(dev, 0, &priv->phy);
+	if (err) {
+		if (err != -ENOENT) {
+			error("failed to get usb phy\n");
+			goto reset_err;
+		}
+	} else {
+
+		err = generic_phy_init(&priv->phy);
+		if (err) {
+			error("failed to init usb phy\n");
+			goto reset_err;
+		}
 	}
 
 	hccr = map_physmem(devfdt_get_addr(dev), 0x100, MAP_NOCACHE);
 	hcor = (struct ehci_hcor *)((uintptr_t)hccr +
 				    HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
 
-	return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
+	err = ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
+	if (err)
+		goto phy_err;
+
+	return 0;
+
+phy_err:
+	if (generic_phy_valid(&priv->phy)) {
+		ret = generic_phy_exit(&priv->phy);
+		if (ret)
+			error("failed to release phy\n");
+	}
+
+reset_err:
+	ret = reset_release_all(priv->resets, priv->reset_count);
+	if (ret)
+		error("failed to assert all resets\n");
+clk_err:
+	ret = clk_release_all(priv->clocks, priv->clock_count);
+	if (ret)
+		error("failed to disable all clocks\n");
+
+	return err;
+}
+
+static int ehci_usb_remove(struct udevice *dev)
+{
+	struct generic_ehci *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = ehci_deregister(dev);
+	if (ret)
+		return ret;
+
+	if (generic_phy_valid(&priv->phy)) {
+		ret = generic_phy_exit(&priv->phy);
+		if (ret)
+			return ret;
+	}
+
+	ret =  reset_release_all(priv->resets, priv->reset_count);
+	if (ret)
+		return ret;
+
+	return clk_release_all(priv->clocks, priv->clock_count);
 }
 
 static const struct udevice_id ehci_usb_ids[] = {
@@ -67,7 +169,7 @@
 	.id	= UCLASS_USB,
 	.of_match = ehci_usb_ids,
 	.probe = ehci_usb_probe,
-	.remove = ehci_deregister,
+	.remove = ehci_usb_remove,
 	.ops	= &ehci_usb_ops,
 	.priv_auto_alloc_size = sizeof(struct generic_ehci),
 	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 13aa70d..3243c1d 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -52,8 +52,8 @@
 		0,		/* wHubCharacteristics */
 		10,		/* bPwrOn2PwrGood */
 		0,		/* bHubCntrCurrent */
-		{},		/* Device removable */
-		{}		/* at most 7 ports! XXX */
+		{		/* Device removable */
+		}		/* at most 7 ports! XXX */
 	},
 	{
 		0x12,		/* bLength */
@@ -148,9 +148,12 @@
 
 static uint32_t *ehci_get_portsc_register(struct ehci_ctrl *ctrl, int port)
 {
-	if (port < 0 || port >= CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
+	int max_ports = HCS_N_PORTS(ehci_readl(&ctrl->hccr->cr_hcsparams));
+
+	if (port < 0 || port >= max_ports) {
 		/* Printing the message would cause a scan failure! */
-		debug("The request port(%u) is not configured\n", port);
+		debug("The request port(%u) exceeds maximum port number\n",
+		      port);
 		return NULL;
 	}
 
@@ -205,6 +208,7 @@
 {
 	int i, ret = 0;
 	uint32_t cmd, reg;
+	int max_ports = HCS_N_PORTS(ehci_readl(&ctrl->hccr->cr_hcsparams));
 
 	if (!ctrl || !ctrl->hcor)
 		return -EINVAL;
@@ -219,7 +223,7 @@
 		100 * 1000);
 
 	if (!ret) {
-		for (i = 0; i < CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS; i++) {
+		for (i = 0; i < max_ports; i++) {
 			reg = ehci_readl(&ctrl->hcor->or_portsc[i]);
 			reg |= EHCI_PS_SUSP;
 			ehci_writel(&ctrl->hcor->or_portsc[i], reg);
@@ -937,7 +941,7 @@
 	return -1;
 }
 
-const struct ehci_ops default_ehci_ops = {
+static const struct ehci_ops default_ehci_ops = {
 	.set_usb_mode		= ehci_set_usbmode,
 	.get_port_speed		= ehci_get_port_speed,
 	.powerup_fixup		= ehci_powerup_fixup,
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 2ab830d..7c39bec 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -11,9 +11,8 @@
 
 #include <usb.h>
 
-#if !defined(CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS)
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
-#endif
+/* Section 2.2.3 - N_PORTS */
+#define MAX_HC_PORTS		15
 
 /*
  * Register Space.
@@ -62,7 +61,7 @@
 	uint32_t _reserved_1_[6];
 	uint32_t or_configflag;
 #define FLAG_CF		(1 << 0)	/* true:  we'll support "high speed" */
-	uint32_t or_portsc[CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS];
+	uint32_t or_portsc[MAX_HC_PORTS];
 #define PORTSC_PSPD(x)		(((x) >> 26) & 0x3)
 #define PORTSC_PSPD_FS			0x0
 #define PORTSC_PSPD_LS			0x1
diff --git a/drivers/usb/host/ohci-generic.c b/drivers/usb/host/ohci-generic.c
index f85738f..e22ee97 100644
--- a/drivers/usb/host/ohci-generic.c
+++ b/drivers/usb/host/ohci-generic.c
@@ -5,7 +5,11 @@
  */
 
 #include <common.h>
+#include <clk.h>
 #include <dm.h>
+#include <dm/ofnode.h>
+#include <generic-phy.h>
+#include <reset.h>
 #include "ohci.h"
 
 #if !defined(CONFIG_USB_OHCI_NEW)
@@ -14,18 +18,133 @@
 
 struct generic_ohci {
 	ohci_t ohci;
+	struct clk *clocks;	/* clock list */
+	struct reset_ctl *resets; /* reset list */
+	struct phy phy;
+	int clock_count;	/* number of clock in clock list */
+	int reset_count;	/* number of reset in reset list */
 };
 
 static int ohci_usb_probe(struct udevice *dev)
 {
 	struct ohci_regs *regs = (struct ohci_regs *)devfdt_get_addr(dev);
+	struct generic_ohci *priv = dev_get_priv(dev);
+	int i, err, ret, clock_nb, reset_nb;
 
-	return ohci_register(dev, regs);
+	err = 0;
+	priv->clock_count = 0;
+	clock_nb = dev_count_phandle_with_args(dev, "clocks", "#clock-cells");
+	if (clock_nb > 0) {
+		priv->clocks = devm_kcalloc(dev, clock_nb, sizeof(struct clk),
+					    GFP_KERNEL);
+		if (!priv->clocks)
+			return -ENOMEM;
+
+		for (i = 0; i < clock_nb; i++) {
+			err = clk_get_by_index(dev, i, &priv->clocks[i]);
+			if (err < 0)
+				break;
+
+			err = clk_enable(&priv->clocks[i]);
+			if (err) {
+				error("failed to enable clock %d\n", i);
+				clk_free(&priv->clocks[i]);
+				goto clk_err;
+			}
+			priv->clock_count++;
+		}
+	} else if (clock_nb != -ENOENT) {
+		error("failed to get clock phandle(%d)\n", clock_nb);
+		return clock_nb;
+	}
+
+	priv->reset_count = 0;
+	reset_nb = dev_count_phandle_with_args(dev, "resets", "#reset-cells");
+	if (reset_nb > 0) {
+		priv->resets = devm_kcalloc(dev, reset_nb,
+					    sizeof(struct reset_ctl),
+					    GFP_KERNEL);
+		if (!priv->resets)
+			return -ENOMEM;
+
+		for (i = 0; i < reset_nb; i++) {
+			err = reset_get_by_index(dev, i, &priv->resets[i]);
+			if (err < 0)
+				break;
+
+			err = reset_deassert(&priv->resets[i]);
+			if (err) {
+				error("failed to deassert reset %d\n", i);
+				reset_free(&priv->resets[i]);
+				goto reset_err;
+			}
+			priv->reset_count++;
+		}
+	} else if (reset_nb != -ENOENT) {
+		error("failed to get reset phandle(%d)\n", reset_nb);
+		goto clk_err;
+	}
+
+	err = generic_phy_get_by_index(dev, 0, &priv->phy);
+	if (err) {
+		if (err != -ENOENT) {
+			error("failed to get usb phy\n");
+			goto reset_err;
+		}
+	} else {
+
+		err = generic_phy_init(&priv->phy);
+		if (err) {
+			error("failed to init usb phy\n");
+			goto reset_err;
+		}
+	}
+
+	err = ohci_register(dev, regs);
+	if (err)
+		goto phy_err;
+
+	return 0;
+
+phy_err:
+	if (generic_phy_valid(&priv->phy)) {
+		ret = generic_phy_exit(&priv->phy);
+		if (ret)
+			error("failed to release phy\n");
+	}
+
+reset_err:
+	ret = reset_release_all(priv->resets, priv->reset_count);
+	if (ret)
+		error("failed to assert all resets\n");
+clk_err:
+	ret = clk_release_all(priv->clocks, priv->clock_count);
+	if (ret)
+		error("failed to disable all clocks\n");
+
+	return err;
 }
 
 static int ohci_usb_remove(struct udevice *dev)
 {
-	return ohci_deregister(dev);
+	struct generic_ohci *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = ohci_deregister(dev);
+	if (ret)
+		return ret;
+
+	if (generic_phy_valid(&priv->phy)) {
+		ret = generic_phy_exit(&priv->phy);
+		if (ret)
+			return ret;
+	}
+
+	ret = reset_release_all(priv->resets, priv->reset_count);
+	if (ret)
+		return ret;
+
+	return clk_release_all(priv->clocks, priv->clock_count);
 }
 
 static const struct udevice_id ohci_usb_ids[] = {
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index 110ddc9..0b8a501 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -139,6 +139,17 @@
 	return ops->reset_root_port(bus, udev);
 }
 
+int usb_update_hub_device(struct usb_device *udev)
+{
+	struct udevice *bus = udev->controller_dev;
+	struct dm_usb_ops *ops = usb_get_ops(bus);
+
+	if (!ops->update_hub_device)
+		return -ENOSYS;
+
+	return ops->update_hub_device(bus, udev);
+}
+
 int usb_stop(void)
 {
 	struct udevice *bus;
@@ -177,7 +188,6 @@
 #ifdef CONFIG_USB_STORAGE
 	usb_stor_reset();
 #endif
-	usb_hub_reset();
 	uc_priv->companion_device_count = 0;
 	usb_started = 0;
 
@@ -230,7 +240,6 @@
 	int ret;
 
 	asynch_allowed = 1;
-	usb_hub_reset();
 
 	ret = uclass_get(UCLASS_USB, &uc);
 	if (ret)
@@ -373,8 +382,8 @@
 }
 
 /* returns 0 if no match, 1 if match */
-int usb_match_device(const struct usb_device_descriptor *desc,
-		     const struct usb_device_id *id)
+static int usb_match_device(const struct usb_device_descriptor *desc,
+			    const struct usb_device_id *id)
 {
 	if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
 	    id->idVendor != le16_to_cpu(desc->idVendor))
@@ -410,9 +419,9 @@
 }
 
 /* returns 0 if no match, 1 if match */
-int usb_match_one_id_intf(const struct usb_device_descriptor *desc,
-			  const struct usb_interface_descriptor *int_desc,
-			  const struct usb_device_id *id)
+static int usb_match_one_id_intf(const struct usb_device_descriptor *desc,
+			const struct usb_interface_descriptor *int_desc,
+			const struct usb_device_id *id)
 {
 	/* The interface class, subclass, protocol and number should never be
 	 * checked for a match if the device class is Vendor Specific,
@@ -445,9 +454,9 @@
 }
 
 /* returns 0 if no match, 1 if match */
-int usb_match_one_id(struct usb_device_descriptor *desc,
-		     struct usb_interface_descriptor *int_desc,
-		     const struct usb_device_id *id)
+static int usb_match_one_id(struct usb_device_descriptor *desc,
+			    struct usb_interface_descriptor *int_desc,
+			    const struct usb_device_id *id)
 {
 	if (!usb_match_device(desc, id))
 		return 0;
@@ -680,7 +689,7 @@
 	return change;
 }
 
-int usb_child_post_bind(struct udevice *dev)
+static int usb_child_post_bind(struct udevice *dev)
 {
 	struct usb_dev_platdata *plat = dev_get_parent_platdata(dev);
 	int val;
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 33961cd..4191a89 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -9,8 +9,21 @@
  */
 
 #include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <generic-phy.h>
+#include <usb.h>
+
+#include "xhci.h"
 #include <asm/io.h>
 #include <linux/usb/dwc3.h>
+#include <linux/usb/otg.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct xhci_dwc3_platdata {
+	struct phy usb_phy;
+};
 
 void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
 {
@@ -19,7 +32,7 @@
 			DWC3_GCTL_PRTCAPDIR(mode));
 }
 
-void dwc3_phy_reset(struct dwc3 *dwc3_reg)
+static void dwc3_phy_reset(struct dwc3 *dwc3_reg)
 {
 	/* Assert USB3 PHY reset */
 	setbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
@@ -97,3 +110,79 @@
 	setbits_le32(&dwc3_reg->g_fladj, GFLADJ_30MHZ_REG_SEL |
 			GFLADJ_30MHZ(val));
 }
+
+#ifdef CONFIG_DM_USB
+static int xhci_dwc3_probe(struct udevice *dev)
+{
+	struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+	struct xhci_hcor *hcor;
+	struct xhci_hccr *hccr;
+	struct dwc3 *dwc3_reg;
+	enum usb_dr_mode dr_mode;
+	int ret;
+
+	hccr = (struct xhci_hccr *)((uintptr_t)dev_read_addr(dev));
+	hcor = (struct xhci_hcor *)((uintptr_t)hccr +
+			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
+
+	ret = generic_phy_get_by_index(dev, 0, &plat->usb_phy);
+	if (ret) {
+		if (ret != -ENOENT) {
+			error("Failed to get USB PHY for %s\n", dev->name);
+			return ret;
+		}
+	} else {
+		ret = generic_phy_init(&plat->usb_phy);
+		if (ret) {
+			error("Can't init USB PHY for %s\n", dev->name);
+			return ret;
+		}
+	}
+
+	dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
+
+	dwc3_core_init(dwc3_reg);
+
+	dr_mode = usb_get_dr_mode(dev_of_offset(dev));
+	if (dr_mode == USB_DR_MODE_UNKNOWN)
+		/* by default set dual role mode to HOST */
+		dr_mode = USB_DR_MODE_HOST;
+
+	dwc3_set_mode(dwc3_reg, dr_mode);
+
+	return xhci_register(dev, hccr, hcor);
+}
+
+static int xhci_dwc3_remove(struct udevice *dev)
+{
+	struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+	int ret;
+
+	if (generic_phy_valid(&plat->usb_phy)) {
+		ret = generic_phy_exit(&plat->usb_phy);
+		if (ret) {
+			error("Can't deinit USB PHY for %s\n", dev->name);
+			return ret;
+		}
+	}
+
+	return xhci_deregister(dev);
+}
+
+static const struct udevice_id xhci_dwc3_ids[] = {
+	{ .compatible = "snps,dwc3" },
+	{ }
+};
+
+U_BOOT_DRIVER(xhci_dwc3) = {
+	.name = "xhci-dwc3",
+	.id = UCLASS_USB,
+	.of_match = xhci_dwc3_ids,
+	.probe = xhci_dwc3_probe,
+	.remove = xhci_dwc3_remove,
+	.ops = &xhci_usb_ops,
+	.priv_auto_alloc_size = sizeof(struct xhci_ctrl),
+	.platdata_auto_alloc_size = sizeof(struct xhci_dwc3_platdata),
+	.flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
+#endif
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 62db51d..d5eab3a 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -96,6 +96,25 @@
 }
 
 /**
+ * Free the scratchpad buffer array and scratchpad buffers
+ *
+ * @ctrl	host controller data structure
+ * @return	none
+ */
+static void xhci_scratchpad_free(struct xhci_ctrl *ctrl)
+{
+	if (!ctrl->scratchpad)
+		return;
+
+	ctrl->dcbaa->dev_context_ptrs[0] = 0;
+
+	free((void *)(uintptr_t)ctrl->scratchpad->sp_array[0]);
+	free(ctrl->scratchpad->sp_array);
+	free(ctrl->scratchpad);
+	ctrl->scratchpad = NULL;
+}
+
+/**
  * frees the "xhci_container_ctx" pointer passed
  *
  * @param ptr	pointer to "xhci_container_ctx" to be freed
@@ -155,6 +174,7 @@
 {
 	xhci_ring_free(ctrl->event_ring);
 	xhci_ring_free(ctrl->cmd_ring);
+	xhci_scratchpad_free(ctrl);
 	xhci_free_virt_devices(ctrl);
 	free(ctrl->erst.entries);
 	free(ctrl->dcbaa);
@@ -320,6 +340,70 @@
 }
 
 /**
+ * Set up the scratchpad buffer array and scratchpad buffers
+ *
+ * @ctrl	host controller data structure
+ * @return	-ENOMEM if buffer allocation fails, 0 on success
+ */
+static int xhci_scratchpad_alloc(struct xhci_ctrl *ctrl)
+{
+	struct xhci_hccr *hccr = ctrl->hccr;
+	struct xhci_hcor *hcor = ctrl->hcor;
+	struct xhci_scratchpad *scratchpad;
+	int num_sp;
+	uint32_t page_size;
+	void *buf;
+	int i;
+
+	num_sp = HCS_MAX_SCRATCHPAD(xhci_readl(&hccr->cr_hcsparams2));
+	if (!num_sp)
+		return 0;
+
+	scratchpad = malloc(sizeof(*scratchpad));
+	if (!scratchpad)
+		goto fail_sp;
+	ctrl->scratchpad = scratchpad;
+
+	scratchpad->sp_array = xhci_malloc(num_sp * sizeof(u64));
+	if (!scratchpad->sp_array)
+		goto fail_sp2;
+	ctrl->dcbaa->dev_context_ptrs[0] =
+		cpu_to_le64((uintptr_t)scratchpad->sp_array);
+
+	page_size = xhci_readl(&hcor->or_pagesize) & 0xffff;
+	for (i = 0; i < 16; i++) {
+		if ((0x1 & page_size) != 0)
+			break;
+		page_size = page_size >> 1;
+	}
+	BUG_ON(i == 16);
+
+	page_size = 1 << (i + 12);
+	buf = memalign(page_size, num_sp * page_size);
+	if (!buf)
+		goto fail_sp3;
+	memset(buf, '\0', num_sp * page_size);
+	xhci_flush_cache((uintptr_t)buf, num_sp * page_size);
+
+	for (i = 0; i < num_sp; i++) {
+		uintptr_t ptr = (uintptr_t)buf + i * page_size;
+		scratchpad->sp_array[i] = cpu_to_le64(ptr);
+	}
+
+	return 0;
+
+fail_sp3:
+	free(scratchpad->sp_array);
+
+fail_sp2:
+	free(scratchpad);
+	ctrl->scratchpad = NULL;
+
+fail_sp:
+	return -ENOMEM;
+}
+
+/**
  * Allocates the Container context
  *
  * @param ctrl	Host controller data structure
@@ -499,6 +583,9 @@
 
 	xhci_writeq(&ctrl->ir_set->erst_base, val_64);
 
+	/* set up the scratchpad buffer array and scratchpad buffers */
+	xhci_scratchpad_alloc(ctrl);
+
 	/* initializing the virtual devices to NULL */
 	for (i = 0; i < MAX_HC_SLOTS; ++i)
 		ctrl->devs[i] = NULL;
@@ -626,14 +713,21 @@
  * @param udev pointer to the Device Data Structure
  * @return returns negative value on failure else 0 on success
  */
-void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl, int slot_id,
-				     int speed, int hop_portnr)
+void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl,
+				     struct usb_device *udev, int hop_portnr)
 {
 	struct xhci_virt_device *virt_dev;
 	struct xhci_ep_ctx *ep0_ctx;
 	struct xhci_slot_ctx *slot_ctx;
 	u32 port_num = 0;
 	u64 trb_64 = 0;
+	int slot_id = udev->slot_id;
+	int speed = udev->speed;
+	int route = 0;
+#ifdef CONFIG_DM_USB
+	struct usb_device *dev = udev;
+	struct usb_hub_device *hub;
+#endif
 
 	virt_dev = ctrl->devs[slot_id];
 
@@ -644,7 +738,32 @@
 	slot_ctx = xhci_get_slot_ctx(ctrl, virt_dev->in_ctx);
 
 	/* Only the control endpoint is valid - one endpoint context */
-	slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | 0);
+	slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1));
+
+#ifdef CONFIG_DM_USB
+	/* Calculate the route string for this device */
+	port_num = dev->portnr;
+	while (!usb_hub_is_root_hub(dev->dev)) {
+		hub = dev_get_uclass_priv(dev->dev);
+		/*
+		 * Each hub in the topology is expected to have no more than
+		 * 15 ports in order for the route string of a device to be
+		 * unique. SuperSpeed hubs are restricted to only having 15
+		 * ports, but FS/LS/HS hubs are not. The xHCI specification
+		 * says that if the port number the device is greater than 15,
+		 * that portion of the route string shall be set to 15.
+		 */
+		if (port_num > 15)
+			port_num = 15;
+		route |= port_num << (hub->hub_depth * 4);
+		dev = dev_get_parent_priv(dev->dev);
+		port_num = dev->portnr;
+		dev = dev_get_parent_priv(dev->dev->parent);
+	}
+
+	debug("route string %x\n", route);
+#endif
+	slot_ctx->dev_info |= route;
 
 	switch (speed) {
 	case USB_SPEED_SUPER:
@@ -664,6 +783,20 @@
 		BUG();
 	}
 
+#ifdef CONFIG_DM_USB
+	/* Set up TT fields to support FS/LS devices */
+	if (speed == USB_SPEED_LOW || speed == USB_SPEED_FULL) {
+		dev = dev_get_parent_priv(udev->dev);
+		if (dev->speed == USB_SPEED_HIGH) {
+			hub = dev_get_uclass_priv(udev->dev);
+			if (hub->tt.multi)
+				slot_ctx->dev_info |= cpu_to_le32(DEV_MTT);
+			slot_ctx->tt_info |= cpu_to_le32(TT_PORT(udev->portnr));
+			slot_ctx->tt_info |= cpu_to_le32(TT_SLOT(dev->slot_id));
+		}
+	}
+#endif
+
 	port_num = hop_portnr;
 	debug("port_num = %d\n", port_num);
 
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 63daaa6..e4a0ef4 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -8,66 +8,10 @@
 
 #include <common.h>
 #include <dm.h>
-#include <errno.h>
 #include <pci.h>
 #include <usb.h>
-
 #include "xhci.h"
 
-#ifndef CONFIG_DM_USB
-
-/*
- * Create the appropriate control structures to manage a new XHCI host
- * controller.
- */
-int xhci_hcd_init(int index, struct xhci_hccr **ret_hccr,
-		  struct xhci_hcor **ret_hcor)
-{
-	struct xhci_hccr *hccr;
-	struct xhci_hcor *hcor;
-	pci_dev_t pdev;
-	uint32_t cmd;
-	int len;
-
-	pdev = pci_find_class(PCI_CLASS_SERIAL_USB_XHCI, index);
-	if (pdev < 0) {
-		printf("XHCI host controller not found\n");
-		return -1;
-	}
-
-	hccr = (struct xhci_hccr *)pci_map_bar(pdev,
-			PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
-	len = HC_LENGTH(xhci_readl(&hccr->cr_capbase));
-	hcor = (struct xhci_hcor *)((uint32_t)hccr + len);
-
-	debug("XHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
-	      (uint32_t)hccr, (uint32_t)hcor, len);
-
-	*ret_hccr = hccr;
-	*ret_hcor = hcor;
-
-	/* enable busmaster */
-	pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
-	cmd |= PCI_COMMAND_MASTER;
-	pci_write_config_dword(pdev, PCI_COMMAND, cmd);
-
-	return 0;
-}
-
-/*
- * Destroy the appropriate control structures corresponding * to the XHCI host
- * controller
- */
-void xhci_hcd_stop(int index)
-{
-}
-
-#else
-
-struct xhci_pci_priv {
-	struct xhci_ctrl ctrl;	/* Needs to come first in this struct! */
-};
-
 static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
 			  struct xhci_hcor **ret_hcor)
 {
@@ -103,17 +47,6 @@
 	return xhci_register(dev, hccr, hcor);
 }
 
-static int xhci_pci_remove(struct udevice *dev)
-{
-	int ret;
-
-	ret = xhci_deregister(dev);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
 static const struct udevice_id xhci_pci_ids[] = {
 	{ .compatible = "xhci-pci" },
 	{ }
@@ -123,11 +56,11 @@
 	.name	= "xhci_pci",
 	.id	= UCLASS_USB,
 	.probe = xhci_pci_probe,
-	.remove = xhci_pci_remove,
+	.remove = xhci_deregister,
 	.of_match = xhci_pci_ids,
 	.ops	= &xhci_usb_ops,
 	.platdata_auto_alloc_size = sizeof(struct usb_platdata),
-	.priv_auto_alloc_size = sizeof(struct xhci_pci_priv),
+	.priv_auto_alloc_size = sizeof(struct xhci_ctrl),
 	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
 };
 
@@ -137,5 +70,3 @@
 };
 
 U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);
-
-#endif /* CONFIG_DM_USB */
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 2675a8f..579e670 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -280,8 +280,15 @@
 	fields[0] = lower_32_bits(val_64);
 	fields[1] = upper_32_bits(val_64);
 	fields[2] = 0;
-	fields[3] = TRB_TYPE(cmd) | EP_ID_FOR_TRB(ep_index) |
-		    SLOT_ID_FOR_TRB(slot_id) | ctrl->cmd_ring->cycle_state;
+	fields[3] = TRB_TYPE(cmd) | SLOT_ID_FOR_TRB(slot_id) |
+		    ctrl->cmd_ring->cycle_state;
+
+	/*
+	 * Only 'reset endpoint', 'stop endpoint' and 'set TR dequeue pointer'
+	 * commands need endpoint id encoded.
+	 */
+	if (cmd >= TRB_RESET_EP && cmd <= TRB_SET_DEQ)
+		fields[3] |= EP_ID_FOR_TRB(ep_index);
 
 	queue_trb(ctrl, ctrl->cmd_ring, false, fields);
 
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 3201177..9b82ee5 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -50,8 +50,8 @@
 		cpu_to_le16(0x8), /* wHubCharacteristics */
 		10,		/* bPwrOn2PwrGood */
 		0,		/* bHubCntrCurrent */
-		{},		/* Device removable */
-		{}		/* at most 7 ports! XXX */
+		{		/* Device removable */
+		}		/* at most 7 ports! XXX */
 	},
 	{
 		0x12,		/* bLength */
@@ -192,7 +192,7 @@
  * @param hcor	pointer to host controller operation registers
  * @return -EBUSY if XHCI Controller is not halted else status of handshake
  */
-int xhci_reset(struct xhci_hcor *hcor)
+static int xhci_reset(struct xhci_hcor *hcor)
 {
 	u32 cmd;
 	u32 state;
@@ -332,8 +332,8 @@
 	ifdesc = &udev->config.if_desc[0];
 
 	ctrl_ctx = xhci_get_input_control_ctx(in_ctx);
-	/* Zero the input context control */
-	ctrl_ctx->add_flags = 0;
+	/* Initialize the input context control */
+	ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG);
 	ctrl_ctx->drop_flags = 0;
 
 	/* EP_FLAG gives values 1 & 4 for EP1OUT and EP2IN */
@@ -415,8 +415,7 @@
 	 * so setting up the slot context.
 	 */
 	debug("Setting up addressable devices %p\n", ctrl->dcbaa);
-	xhci_setup_addressable_virt_dev(ctrl, udev->slot_id, udev->speed,
-					root_portnr);
+	xhci_setup_addressable_virt_dev(ctrl, udev, root_portnr);
 
 	ctrl_ctx = xhci_get_input_control_ctx(virt_dev->in_ctx);
 	ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
@@ -481,7 +480,7 @@
  * @param udev	pointer to the Device Data Structure
  * @return Returns 0 on succes else return error code on failure
  */
-int _xhci_alloc_device(struct usb_device *udev)
+static int _xhci_alloc_device(struct usb_device *udev)
 {
 	struct xhci_ctrl *ctrl = xhci_get_ctrl(udev);
 	union xhci_trb *event;
@@ -668,12 +667,14 @@
 	uint32_t reg;
 	volatile uint32_t *status_reg;
 	struct xhci_ctrl *ctrl = xhci_get_ctrl(udev);
+	struct xhci_hccr *hccr = ctrl->hccr;
 	struct xhci_hcor *hcor = ctrl->hcor;
+	int max_ports = HCS_MAX_PORTS(xhci_readl(&hccr->cr_hcsparams1));
 
 	if ((req->requesttype & USB_RT_PORT) &&
-	    le16_to_cpu(req->index) > CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS) {
-		printf("The request port(%d) is not configured\n",
-			le16_to_cpu(req->index) - 1);
+	    le16_to_cpu(req->index) > max_ports) {
+		printf("The request port(%d) exceeds maximum port number\n",
+		       le16_to_cpu(req->index) - 1);
 		return -EINVAL;
 	}
 
@@ -727,6 +728,7 @@
 	case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
 		switch (le16_to_cpu(req->value) >> 8) {
 		case USB_DT_HUB:
+		case USB_DT_SS_HUB:
 			debug("USB_DT_HUB config\n");
 			srcptr = &descriptor.hub;
 			srclen = 0x8;
@@ -1113,26 +1115,6 @@
 #endif /* CONFIG_DM_USB */
 
 #ifdef CONFIG_DM_USB
-/*
-static struct usb_device *get_usb_device(struct udevice *dev)
-{
-	struct usb_device *udev;
-
-	if (device_get_uclass_id(dev) == UCLASS_USB)
-		udev = dev_get_uclass_priv(dev);
-	else
-		udev = dev_get_parent_priv(dev);
-
-	return udev;
-}
-*/
-static bool is_root_hub(struct udevice *dev)
-{
-	if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB)
-		return true;
-
-	return false;
-}
 
 static int xhci_submit_control_msg(struct udevice *dev, struct usb_device *udev,
 				   unsigned long pipe, void *buffer, int length,
@@ -1147,10 +1129,10 @@
 	hub = udev->dev;
 	if (device_get_uclass_id(hub) == UCLASS_USB_HUB) {
 		/* Figure out our port number on the root hub */
-		if (is_root_hub(hub)) {
+		if (usb_hub_is_root_hub(hub)) {
 			root_portnr = udev->portnr;
 		} else {
-			while (!is_root_hub(hub->parent))
+			while (!usb_hub_is_root_hub(hub->parent))
 				hub = hub->parent;
 			uhop = dev_get_parent_priv(hub);
 			root_portnr = uhop->portnr;
@@ -1188,6 +1170,64 @@
 	return _xhci_alloc_device(udev);
 }
 
+static int xhci_update_hub_device(struct udevice *dev, struct usb_device *udev)
+{
+	struct xhci_ctrl *ctrl = dev_get_priv(dev);
+	struct usb_hub_device *hub = dev_get_uclass_priv(udev->dev);
+	struct xhci_virt_device *virt_dev;
+	struct xhci_input_control_ctx *ctrl_ctx;
+	struct xhci_container_ctx *out_ctx;
+	struct xhci_container_ctx *in_ctx;
+	struct xhci_slot_ctx *slot_ctx;
+	int slot_id = udev->slot_id;
+	unsigned think_time;
+
+	debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
+
+	/* Ignore root hubs */
+	if (usb_hub_is_root_hub(udev->dev))
+		return 0;
+
+	virt_dev = ctrl->devs[slot_id];
+	BUG_ON(!virt_dev);
+
+	out_ctx = virt_dev->out_ctx;
+	in_ctx = virt_dev->in_ctx;
+
+	ctrl_ctx = xhci_get_input_control_ctx(in_ctx);
+	/* Initialize the input context control */
+	ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
+	ctrl_ctx->drop_flags = 0;
+
+	xhci_inval_cache((uintptr_t)out_ctx->bytes, out_ctx->size);
+
+	/* slot context */
+	xhci_slot_copy(ctrl, in_ctx, out_ctx);
+	slot_ctx = xhci_get_slot_ctx(ctrl, in_ctx);
+
+	/* Update hub related fields */
+	slot_ctx->dev_info |= cpu_to_le32(DEV_HUB);
+	if (hub->tt.multi && udev->speed == USB_SPEED_HIGH)
+		slot_ctx->dev_info |= cpu_to_le32(DEV_MTT);
+	slot_ctx->dev_info2 |= cpu_to_le32(XHCI_MAX_PORTS(udev->maxchild));
+	/*
+	 * Set TT think time - convert from ns to FS bit times.
+	 * Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns
+	 *
+	 * 0 =  8 FS bit times, 1 = 16 FS bit times,
+	 * 2 = 24 FS bit times, 3 = 32 FS bit times.
+	 *
+	 * This field shall be 0 if the device is not a high-spped hub.
+	 */
+	think_time = hub->tt.think_time;
+	if (think_time != 0)
+		think_time = (think_time / 666) - 1;
+	if (udev->speed == USB_SPEED_HIGH)
+		slot_ctx->tt_info |= cpu_to_le32(TT_THINK_TIME(think_time));
+
+	return xhci_configure_endpoints(udev, false);
+}
+
 int xhci_register(struct udevice *dev, struct xhci_hccr *hccr,
 		  struct xhci_hcor *hcor)
 {
@@ -1240,6 +1280,7 @@
 	.bulk = xhci_submit_bulk_msg,
 	.interrupt = xhci_submit_int_msg,
 	.alloc_device = xhci_alloc_device,
+	.update_hub_device = xhci_update_hub_device,
 };
 
 #endif
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 2afa386..a497d9d 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -30,7 +30,7 @@
 /* Max number of USB devices for any host controller - limit in section 6.1 */
 #define MAX_HC_SLOTS            256
 /* Section 5.3.3 - MaxPorts */
-#define MAX_HC_PORTS            127
+#define MAX_HC_PORTS            255
 
 /* Up to 16 ms to halt an HC */
 #define XHCI_MAX_HALT_USEC	(16*1000)
@@ -102,8 +102,8 @@
 #define HCS_MAX_INTRS(p)	(((p) >> 8) & 0x7ff)
 /* bits 24:31, Max Ports - max value is 0x7F = 127 ports */
 #define HCS_MAX_PORTS_SHIFT	24
-#define HCS_MAX_PORTS_MASK	(0x7f << HCS_MAX_PORTS_SHIFT)
-#define HCS_MAX_PORTS(p)	(((p) >> 24) & 0x7f)
+#define HCS_MAX_PORTS_MASK	(0xff << HCS_MAX_PORTS_SHIFT)
+#define HCS_MAX_PORTS(p)	(((p) >> 24) & 0xff)
 
 /* HCSPARAMS2 - hcs_params2 - bitmasks */
 /* bits 0:3, frames or uframes that SW needs to queue transactions
@@ -111,9 +111,10 @@
 #define HCS_IST(p)		(((p) >> 0) & 0xf)
 /* bits 4:7, max number of Event Ring segments */
 #define HCS_ERST_MAX(p)		(((p) >> 4) & 0xf)
+/* bits 21:25 Hi 5 bits of Scratchpad buffers SW must allocate for the HW */
 /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */
-/* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */
-#define HCS_MAX_SCRATCHPAD(p)   (((p) >> 27) & 0x1f)
+/* bits 27:31 Lo 5 bits of Scratchpad buffers SW must allocate for the HW */
+#define HCS_MAX_SCRATCHPAD(p)	((((p) >> 16) & 0x3e0) | (((p) >> 27) & 0x1f))
 
 /* HCSPARAMS3 - hcs_params3 - bitmasks */
 /* bits 0:7, Max U1 to U0 latency for the roothub ports */
@@ -171,9 +172,7 @@
 	volatile uint64_t or_dcbaap;
 	volatile uint32_t or_config;
 	volatile uint32_t reserved_2[241];
-	struct xhci_hcor_port_regs portregs[CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS];
-
-	uint32_t reserved_4[CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS * 254];
+	struct xhci_hcor_port_regs portregs[MAX_HC_PORTS];
 };
 
 /* USBCMD - USB command - command bitmasks */
@@ -482,10 +481,9 @@
  * @type: Type of context.  Used to calculated offsets to contained contexts.
  * @size: Size of the context data
  * @bytes: The raw context data given to HW
- * @dma: dma address of the bytes
  *
  * Represents either a Device or Input context.  Holds a pointer to the raw
- * memory used for the context (bytes) and dma address of it (dma).
+ * memory used for the context (bytes).
  */
 struct xhci_container_ctx {
 	unsigned type;
@@ -550,12 +548,12 @@
  * The Slot ID of the hub that isolates the high speed signaling from
  * this low or full-speed device.  '0' if attached to root hub port.
  */
-#define TT_SLOT			(0xff)
+#define TT_SLOT(p)		(((p) & 0xff) << 0)
 /*
  * The number of the downstream facing port of the high-speed hub
  * '0' if the device is not low or full speed.
  */
-#define TT_PORT			(0xff << 8)
+#define TT_PORT(p)		(((p) & 0xff) << 8)
 #define TT_THINK_TIME(p)	(((p) & 0x3) << 16)
 
 /* dev_state bitmasks */
@@ -1038,6 +1036,10 @@
 	unsigned int		erst_size;
 };
 
+struct xhci_scratchpad {
+	u64 *sp_array;
+};
+
 /*
  * Each segment table entry is 4*32bits long.  1K seems like an ok size:
  * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
@@ -1225,6 +1227,7 @@
 	struct xhci_intr_reg *ir_set;
 	struct xhci_erst erst;
 	struct xhci_erst_entry entry[ERST_NUM_SEGS];
+	struct xhci_scratchpad *scratchpad;
 	struct xhci_virt_device *devs[MAX_HC_SLOTS];
 	int rootdev;
 };
@@ -1244,8 +1247,8 @@
 void xhci_slot_copy(struct xhci_ctrl *ctrl,
 		    struct xhci_container_ctx *in_ctx,
 		    struct xhci_container_ctx *out_ctx);
-void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl, int slot_id,
-				     int speed, int hop_portnr);
+void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl,
+				     struct usb_device *udev, int hop_portnr);
 void xhci_queue_command(struct xhci_ctrl *ctrl, u8 *ptr,
 			u32 slot_id, u32 ep_index, trb_type cmd);
 void xhci_acknowledge_event(struct xhci_ctrl *ctrl);
diff --git a/include/clk.h b/include/clk.h
index 5a5c2ff..c5988f7 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -98,6 +98,21 @@
  * @return 0 if OK, or a negative error code.
  */
 int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk);
+
+/**
+ * clk_release_all() - Disable (turn off)/Free an array of previously
+ * requested clocks.
+ *
+ * For each clock contained in the clock array, this function will check if
+ * clock has been previously requested and then will disable and free it.
+ *
+ * @clk:	A clock struct array that was previously successfully
+ *		requested by clk_request/get_by_*().
+ * @count	Number of clock contained in the array
+ * @return zero on success, or -ve error code.
+ */
+int clk_release_all(struct clk *clk, int count);
+
 #else
 static inline int clk_get_by_index(struct udevice *dev, int index,
 				   struct clk *clk)
@@ -110,6 +125,12 @@
 {
 	return -ENOSYS;
 }
+
+static inline int clk_release_all(struct clk *clk, int count)
+{
+	return -ENOSYS;
+}
+
 #endif
 
 /**
diff --git a/include/configs/MPC8572DS.h b/include/configs/MPC8572DS.h
index 0a2bcb2..32c5932 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -560,7 +560,6 @@
 #define CONFIG_USB_EHCI_PCI
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 #define CONFIG_PCI_EHCI_DEVICE			0
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
 #endif
 
 #undef CONFIG_WATCHDOG			/* watchdog disabled */
diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index a91b7df..70e7473 100644
--- a/include/configs/am43xx_evm.h
+++ b/include/configs/am43xx_evm.h
@@ -82,7 +82,6 @@
 #if defined(CONFIG_SPL_USB_HOST_SUPPORT) || !defined(CONFIG_SPL_BUILD)
 #define CONFIG_SYS_USB_FAT_BOOT_PARTITION		1
 #define CONFIG_USB_XHCI_OMAP
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_AM437X_USB2PHY2_HOST
diff --git a/include/configs/am57xx_evm.h b/include/configs/am57xx_evm.h
index 9216998..9976686 100644
--- a/include/configs/am57xx_evm.h
+++ b/include/configs/am57xx_evm.h
@@ -92,7 +92,6 @@
 
 /* USB xHCI HOST */
 #define CONFIG_USB_XHCI_OMAP
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_OMAP_USB3PHY1_HOST
diff --git a/include/configs/cl-som-am57x.h b/include/configs/cl-som-am57x.h
index c1cf413..120ac02 100644
--- a/include/configs/cl-som-am57x.h
+++ b/include/configs/cl-som-am57x.h
@@ -83,7 +83,6 @@
 
 /* USB xHCI HOST */
 #define CONFIG_USB_XHCI_OMAP
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_OMAP_USB3PHY1_HOST
diff --git a/include/configs/cm_t43.h b/include/configs/cm_t43.h
index f6e0743..7a61107 100644
--- a/include/configs/cm_t43.h
+++ b/include/configs/cm_t43.h
@@ -60,7 +60,6 @@
 
 /* USB support */
 #define CONFIG_USB_XHCI_OMAP
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_AM437X_USB2PHY2_HOST
 
diff --git a/include/configs/cm_t54.h b/include/configs/cm_t54.h
index 69706d2..8a4c333 100644
--- a/include/configs/cm_t54.h
+++ b/include/configs/cm_t54.h
@@ -56,7 +56,6 @@
 #define CONFIG_SYS_SCSI_MAX_DEVICE	(CONFIG_SYS_SCSI_MAX_SCSI_ID * \
 						CONFIG_SYS_SCSI_MAX_LUN)
 /* USB UHH support options */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 
 #define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO	76 /* HSIC2 HUB #RESET */
diff --git a/include/configs/corvus.h b/include/configs/corvus.h
index ed1a228..0150727 100644
--- a/include/configs/corvus.h
+++ b/include/configs/corvus.h
@@ -94,9 +94,6 @@
 #define CONFIG_NET_RETRY_COUNT		20
 #define CONFIG_AT91_WANTS_COMMON_PHY
 
-/* USB */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
-
 #define CONFIG_MTD_DEVICE
 #define CONFIG_MTD_PARTITIONS
 
diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index 8566bdc..b509151 100644
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -154,7 +154,6 @@
 
 /* USB xHCI HOST */
 #define CONFIG_USB_XHCI_OMAP
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_OMAP_USB2PHY2_HOST
diff --git a/include/configs/ds414.h b/include/configs/ds414.h
index a209e6f..c1e9346 100644
--- a/include/configs/ds414.h
+++ b/include/configs/ds414.h
@@ -68,7 +68,6 @@
 #if 0
 #undef CONFIG_DM_USB
 #define CONFIG_USB_XHCI_PCI
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
 #endif
 
 #if !defined(CONFIG_USB_XHCI_HCD)
diff --git a/include/configs/duovero.h b/include/configs/duovero.h
index 8efcc94..c4496a7 100644
--- a/include/configs/duovero.h
+++ b/include/configs/duovero.h
@@ -25,8 +25,6 @@
 #define CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
 
 /* USB UHH support options */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
-
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO 1
 #define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 62
 
diff --git a/include/configs/exynos5-common.h b/include/configs/exynos5-common.h
index 378219d..3b73bbc 100644
--- a/include/configs/exynos5-common.h
+++ b/include/configs/exynos5-common.h
@@ -134,9 +134,6 @@
 /* Enable Time Command */
 
 /* USB */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
-
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_ASIX
 #define CONFIG_USB_ETHER_SMSC95XX
diff --git a/include/configs/ls1012afrdm.h b/include/configs/ls1012afrdm.h
index f6f88e8..6b1ba57 100644
--- a/include/configs/ls1012afrdm.h
+++ b/include/configs/ls1012afrdm.h
@@ -39,7 +39,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #endif
 
 #define CONFIG_CMD_MEMINFO
diff --git a/include/configs/ls1012aqds.h b/include/configs/ls1012aqds.h
index 9e6c7a7..bebb0df 100644
--- a/include/configs/ls1012aqds.h
+++ b/include/configs/ls1012aqds.h
@@ -124,7 +124,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #endif
 
 /*  MMC  */
diff --git a/include/configs/ls1012ardb.h b/include/configs/ls1012ardb.h
index 0705bc5..32c8cec 100644
--- a/include/configs/ls1012ardb.h
+++ b/include/configs/ls1012ardb.h
@@ -27,7 +27,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #endif
 
 /*
diff --git a/include/configs/ls1021aiot.h b/include/configs/ls1021aiot.h
index 1f2eb52..58f893f 100644
--- a/include/configs/ls1021aiot.h
+++ b/include/configs/ls1021aiot.h
@@ -26,7 +26,6 @@
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_XHCI_DWC3
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #endif
 
 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_XHCI_USB)
diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index 251a66e..83e7e7a 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -413,7 +413,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #endif
 
 /*
diff --git a/include/configs/ls1021atwr.h b/include/configs/ls1021atwr.h
index b9e5cdb..0aa6fdd 100644
--- a/include/configs/ls1021atwr.h
+++ b/include/configs/ls1021atwr.h
@@ -50,7 +50,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT        1
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS     2
 #endif
 
 #define CONFIG_SYS_CLK_FREQ		100000000
diff --git a/include/configs/ls1043aqds.h b/include/configs/ls1043aqds.h
index 415a705..0897da1 100644
--- a/include/configs/ls1043aqds.h
+++ b/include/configs/ls1043aqds.h
@@ -377,7 +377,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		3
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #endif
 
 /*
diff --git a/include/configs/ls1043ardb.h b/include/configs/ls1043ardb.h
index 59e7760..617a712 100644
--- a/include/configs/ls1043ardb.h
+++ b/include/configs/ls1043ardb.h
@@ -288,7 +288,6 @@
 #ifdef CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		3
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #endif
 #endif
 
diff --git a/include/configs/ls1046aqds.h b/include/configs/ls1046aqds.h
index ea99676..bb3d941 100644
--- a/include/configs/ls1046aqds.h
+++ b/include/configs/ls1046aqds.h
@@ -144,7 +144,6 @@
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_XHCI_DWC3
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         3
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #define CONFIG_CMD_USB
 #define CONFIG_USB_STORAGE
 #endif
diff --git a/include/configs/ls1046ardb.h b/include/configs/ls1046ardb.h
index 20a5e7f..8c72291 100644
--- a/include/configs/ls1046ardb.h
+++ b/include/configs/ls1046ardb.h
@@ -220,7 +220,6 @@
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_XHCI_DWC3
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         3
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 #define CONFIG_CMD_USB
 #define CONFIG_USB_STORAGE
 #endif
diff --git a/include/configs/ls2080aqds.h b/include/configs/ls2080aqds.h
index 929ae32..66936c4 100644
--- a/include/configs/ls2080aqds.h
+++ b/include/configs/ls2080aqds.h
@@ -446,7 +446,6 @@
 #define CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		2
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 
 #include <asm/fsl_secure_boot.h>
 
diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
index 0be4c4f..744a789 100644
--- a/include/configs/ls2080ardb.h
+++ b/include/configs/ls2080ardb.h
@@ -346,7 +346,6 @@
 #define CONFIG_HAS_FSL_XHCI_USB
 #define CONFIG_USB_XHCI_FSL
 #define CONFIG_USB_MAX_CONTROLLER_COUNT         2
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
 
 #undef CONFIG_CMDLINE_EDITING
 #include <config_distro_defaults.h>
diff --git a/include/configs/ma5d4evk.h b/include/configs/ma5d4evk.h
index 2744efb..7c28a94 100644
--- a/include/configs/ma5d4evk.h
+++ b/include/configs/ma5d4evk.h
@@ -96,7 +96,6 @@
  * USB
  */
 #ifdef CONFIG_CMD_USB
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 
 /* USB device */
 #define CONFIG_USB_ETHER
diff --git a/include/configs/mcx.h b/include/configs/mcx.h
index 73fdfbd..3f5fdab 100644
--- a/include/configs/mcx.h
+++ b/include/configs/mcx.h
@@ -74,7 +74,6 @@
 
 /* EHCI */
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	57
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
 #define	CONFIG_USB_HOST_ETHER
 #define	CONFIG_USB_ETHER_ASIX
 #define CONFIG_USB_ETHER_MCS7830
diff --git a/include/configs/minnowmax.h b/include/configs/minnowmax.h
index ae95485..6ea607d 100644
--- a/include/configs/minnowmax.h
+++ b/include/configs/minnowmax.h
@@ -20,7 +20,8 @@
 
 #define CONFIG_STD_DEVICES_SETTINGS	"stdin=usbkbd,serial\0" \
 					"stdout=vidconsole,serial\0" \
-					"stderr=vidconsole,serial\0"
+					"stderr=vidconsole,serial\0" \
+					"usb_pgood_delay=40\0"
 
 #define CONFIG_SCSI_DEV_LIST		\
 	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_VALLEYVIEW_SATA}, \
diff --git a/include/configs/mvebu_armada-37xx.h b/include/configs/mvebu_armada-37xx.h
index 778cc9e..1307d21 100644
--- a/include/configs/mvebu_armada-37xx.h
+++ b/include/configs/mvebu_armada-37xx.h
@@ -93,14 +93,7 @@
 #define CONFIG_NET_RETRY_COUNT	50
 #define CONFIG_PHY_MARVELL
 
-/* USB 2.0 */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
-
-/* USB 3.0 */
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 3
-
-#define CONFIG_USB_MAX_CONTROLLER_COUNT (CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS + \
-					 CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS)
+#define CONFIG_USB_MAX_CONTROLLER_COUNT (3 + 3)
 
 /* USB ethernet */
 #define CONFIG_USB_HOST_ETHER
diff --git a/include/configs/mvebu_armada-8k.h b/include/configs/mvebu_armada-8k.h
index 53db10f..86ae19c 100644
--- a/include/configs/mvebu_armada-8k.h
+++ b/include/configs/mvebu_armada-8k.h
@@ -97,14 +97,7 @@
 #define CONFIG_ARP_TIMEOUT	200
 #define CONFIG_NET_RETRY_COUNT	50
 
-/* USB 2.0 */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
-
-/* USB 3.0 */
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 3
-
-#define CONFIG_USB_MAX_CONTROLLER_COUNT (CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS + \
-					 CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS)
+#define CONFIG_USB_MAX_CONTROLLER_COUNT (3 + 3)
 
 /* USB ethernet */
 #define CONFIG_USB_HOST_ETHER
diff --git a/include/configs/mx35pdk.h b/include/configs/mx35pdk.h
index 9ae3d18..8338d6d 100644
--- a/include/configs/mx35pdk.h
+++ b/include/configs/mx35pdk.h
@@ -195,7 +195,6 @@
 #define CONFIG_SYS_NAND_LARGEPAGE
 
 /* EHCI driver */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	1
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 #define CONFIG_USB_EHCI_MXC
diff --git a/include/configs/odroid.h b/include/configs/odroid.h
index 9552c96..563854d 100644
--- a/include/configs/odroid.h
+++ b/include/configs/odroid.h
@@ -184,7 +184,6 @@
 /* USB */
 #define CONFIG_USB_EHCI_EXYNOS
 
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_SMSC95XX
 
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index 4422d5e..2fc6693 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -58,7 +58,6 @@
 
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	147
 
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_ASIX
 #define CONFIG_USB_ETHER_MCS7830
diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h
index 834822d..133069a 100644
--- a/include/configs/omap3_overo.h
+++ b/include/configs/omap3_overo.h
@@ -41,7 +41,6 @@
 
 /* USB EHCI */
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	183
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 
 /* commands to include */
 
diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h
index a973ce6..9951980 100644
--- a/include/configs/omap4_panda.h
+++ b/include/configs/omap4_panda.h
@@ -17,8 +17,6 @@
  */
 
 /* USB UHH support options */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
-
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO 1
 #define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 62
 
diff --git a/include/configs/omap5_uevm.h b/include/configs/omap5_uevm.h
index eb5e6df..9b65009 100644
--- a/include/configs/omap5_uevm.h
+++ b/include/configs/omap5_uevm.h
@@ -51,7 +51,6 @@
 #define CONFIG_SYS_I2C_TCA642X_ADDR 0x22
 
 /* USB UHH support options */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 
 #define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 80
diff --git a/include/configs/picosam9g45.h b/include/configs/picosam9g45.h
index 88f841d..a14739f 100644
--- a/include/configs/picosam9g45.h
+++ b/include/configs/picosam9g45.h
@@ -97,9 +97,6 @@
 #define CONFIG_RESET_PHY_R
 #define CONFIG_AT91_WANTS_COMMON_PHY
 
-/* USB */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
-
 #define CONFIG_SYS_LOAD_ADDR		0x22000000	/* load address */
 
 #define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
diff --git a/include/configs/poplar.h b/include/configs/poplar.h
index d59f32a..d2ecd0d 100644
--- a/include/configs/poplar.h
+++ b/include/configs/poplar.h
@@ -30,7 +30,6 @@
 #define CONFIG_PL01X_SERIAL
 
 /* USB configuration */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		2
 #define CONFIG_SYS_USB_EVENT_POLL
 #define CONFIG_USB_HOST_ETHER
diff --git a/include/configs/rk3328_common.h b/include/configs/rk3328_common.h
index 7f9f0c5..906c821 100644
--- a/include/configs/rk3328_common.h
+++ b/include/configs/rk3328_common.h
@@ -63,6 +63,4 @@
 #define CONFIG_USB_OHCI_NEW
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	1
 
-/* xhci host */
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #endif
diff --git a/include/configs/rk3399_common.h b/include/configs/rk3399_common.h
index 6c9d760..3317887 100644
--- a/include/configs/rk3399_common.h
+++ b/include/configs/rk3399_common.h
@@ -80,7 +80,4 @@
 #define CONFIG_USB_ETHER_SMSC95XX
 #define CONFIG_USB_ETHER_RTL8152
 
-/* rockchip xhci host driver */
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
-
 #endif
diff --git a/include/configs/sama5d2_ptc.h b/include/configs/sama5d2_ptc.h
index b25be97..401f198 100644
--- a/include/configs/sama5d2_ptc.h
+++ b/include/configs/sama5d2_ptc.h
@@ -65,10 +65,6 @@
 /* USB */
 #define CONFIG_CMD_USB
 
-#ifdef CONFIG_CMD_USB
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
-#endif
-
 /* USB device */
 #define CONFIG_USB_GADGET
 #define CONFIG_USB_GADGET_DUALSPEED
diff --git a/include/configs/snapper9g45.h b/include/configs/snapper9g45.h
index 2c5f264..47dd991 100644
--- a/include/configs/snapper9g45.h
+++ b/include/configs/snapper9g45.h
@@ -60,9 +60,6 @@
 #define CONFIG_TFTP_PORT
 #define CONFIG_TFTP_TSIZE
 
-/* USB */
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
-
 /* MMC */
 #define CONFIG_GENERIC_ATMEL_MCI
 
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index fefd58f..681c91c 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -310,7 +310,6 @@
 #define CONFIG_USB_OHCI_NEW
 #define CONFIG_USB_OHCI_SUNXI
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 1
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 #endif
 
 #ifdef CONFIG_USB_MUSB_SUNXI
diff --git a/include/configs/tam3517-common.h b/include/configs/tam3517-common.h
index a9991fc..fb173eb 100644
--- a/include/configs/tam3517-common.h
+++ b/include/configs/tam3517-common.h
@@ -67,7 +67,6 @@
 					115200}
 /* EHCI */
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	25
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
 
 /* commands to include */
 #define CONFIG_CMD_NAND		/* NAND support			*/
diff --git a/include/configs/tao3530.h b/include/configs/tao3530.h
index 38f5bd0..08134f4 100644
--- a/include/configs/tao3530.h
+++ b/include/configs/tao3530.h
@@ -228,7 +228,6 @@
 /* USB EHCI */
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO	162
 
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_SMSC95XX
 
diff --git a/include/configs/tegra114-common.h b/include/configs/tegra114-common.h
index 107a0f8..75d2065 100644
--- a/include/configs/tegra114-common.h
+++ b/include/configs/tegra114-common.h
@@ -63,6 +63,5 @@
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
 #endif /* _TEGRA114_COMMON_H_ */
diff --git a/include/configs/tegra124-common.h b/include/configs/tegra124-common.h
index 8cf9bac..0d61753 100644
--- a/include/configs/tegra124-common.h
+++ b/include/configs/tegra124-common.h
@@ -65,7 +65,6 @@
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
 /* GPU needs setup */
 #define CONFIG_TEGRA_GPU
diff --git a/include/configs/tegra20-common.h b/include/configs/tegra20-common.h
index db1cc24..342ffbe 100644
--- a/include/configs/tegra20-common.h
+++ b/include/configs/tegra20-common.h
@@ -82,7 +82,6 @@
  */
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	10
 #define CONFIG_EHCI_IS_TDI
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
 #define CONFIG_SYS_NAND_SELF_INIT
 #define CONFIG_SYS_NAND_ONFI_DETECTION
diff --git a/include/configs/tegra210-common.h b/include/configs/tegra210-common.h
index 874fe34d..4c05576 100644
--- a/include/configs/tegra210-common.h
+++ b/include/configs/tegra210-common.h
@@ -68,7 +68,6 @@
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
 /* GPU needs setup */
 #define CONFIG_TEGRA_GPU
diff --git a/include/configs/tegra30-common.h b/include/configs/tegra30-common.h
index 6083847..c2096fb 100644
--- a/include/configs/tegra30-common.h
+++ b/include/configs/tegra30-common.h
@@ -64,6 +64,5 @@
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
 #endif /* _TEGRA30_COMMON_H_ */
diff --git a/include/configs/ti_armv7_keystone2.h b/include/configs/ti_armv7_keystone2.h
index c6122a0..26290ef 100644
--- a/include/configs/ti_armv7_keystone2.h
+++ b/include/configs/ti_armv7_keystone2.h
@@ -193,7 +193,6 @@
 
 /* USB Configuration */
 #define CONFIG_USB_XHCI_KEYSTONE
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #define CONFIG_USB_SS_BASE			KS2_USB_SS_BASE
 #define CONFIG_USB_HOST_XHCI_BASE		KS2_USB_HOST_XHCI_BASE
 #define CONFIG_DEV_USB_PHY_BASE			KS2_DEV_USB_PHY_BASE
diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h
index cc65f07..6f53139 100644
--- a/include/configs/uniphier.h
+++ b/include/configs/uniphier.h
@@ -101,9 +101,6 @@
 #define CONFIG_SYS_NAND_USE_FLASH_BBT
 #define CONFIG_SYS_NAND_BAD_BLOCK_POS			0
 
-/* USB */
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	4
-
 /* SD/MMC */
 #define CONFIG_SUPPORT_EMMC_BOOT
 
diff --git a/include/configs/vinco.h b/include/configs/vinco.h
index dc35b289..adff1b6 100644
--- a/include/configs/vinco.h
+++ b/include/configs/vinco.h
@@ -63,12 +63,6 @@
 
 #endif
 
-/* USB */
-
-#ifdef CONFIG_CMD_USB
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
-#endif
-
 /* USB device */
 #define CONFIG_USB_ETHER
 #define CONFIG_USB_ETH_RNDIS
diff --git a/include/configs/x86-common.h b/include/configs/x86-common.h
index 1be6974..aa1e505 100644
--- a/include/configs/x86-common.h
+++ b/include/configs/x86-common.h
@@ -128,7 +128,6 @@
  * USB configuration
  */
 #define CONFIG_USB_EHCI_PCI
-#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS     12
 #define CONFIG_SYS_USB_EVENT_POLL
 
 #define CONFIG_USB_HOST_ETHER
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index c30e37c..7c5ec19 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -90,8 +90,6 @@
 #define CONFIG_SYS_LOAD_ADDR		0x8000000
 
 #if defined(CONFIG_ZYNQMP_USB)
-#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS      2
-
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	0x1800000
 #define DFU_DEFAULT_POLL_TIMEOUT	300
 #define CONFIG_USB_CABLE_CHECK
diff --git a/include/dfu.h b/include/dfu.h
index f39d3f1..7e322d9 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -110,7 +110,7 @@
 		struct sf_internal_data sf;
 	} data;
 
-	long (*get_medium_size)(struct dfu_entity *dfu);
+	int (*get_medium_size)(struct dfu_entity *dfu, u64 *size);
 
 	int (*read_medium)(struct dfu_entity *dfu,
 			u64 offset, void *buf, long *len);
@@ -132,7 +132,7 @@
 	u8 *i_buf;
 	u8 *i_buf_start;
 	u8 *i_buf_end;
-	long r_left;
+	u64 r_left;
 	long b_left;
 
 	u32 bad_skip;	/* for nand use */
diff --git a/include/dm/of_access.h b/include/dm/of_access.h
index c5ea391..c49d287 100644
--- a/include/dm/of_access.h
+++ b/include/dm/of_access.h
@@ -353,6 +353,24 @@
 			       int index, struct of_phandle_args *out_args);
 
 /**
+ * of_count_phandle_with_args() - Count the number of phandle in a list
+ *
+ * @np:		pointer to a device tree node containing a list
+ * @list_name:	property name that contains a list
+ * @cells_name:	property name that specifies phandles' arguments count
+ * @return number of phandle found, -ENOENT if
+ *	@list_name does not exist, -EINVAL if a phandle was not found,
+ *	@cells_name could not be found, the arguments were truncated or there
+ *	were too many arguments.
+ *
+ * Returns number of phandle found on success, on error returns appropriate
+ * errno value.
+ *
+ */
+int of_count_phandle_with_args(const struct device_node *np,
+			       const char *list_name, const char *cells_name);
+
+/**
  * of_alias_scan() - Scan all properties of the 'aliases' node
  *
  * The function scans all the properties of the 'aliases' node and populates
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 966ca93..210ddb2 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -435,6 +435,23 @@
 				   struct ofnode_phandle_args *out_args);
 
 /**
+ * ofnode_count_phandle_with_args() - Count number of phandle in a list
+ *
+ * This function is useful to count phandles into a list.
+ * Returns number of phandle on success, on error returns appropriate
+ * errno value.
+ *
+ * @node:	device tree node containing a list
+ * @list_name:	property name that contains a list
+ * @cells_name:	property name that specifies phandles' arguments count
+ * @return number of phandle on success, -ENOENT if @list_name does not
+ *      exist, -EINVAL if a phandle was not found, @cells_name could not
+ *      be found.
+ */
+int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
+				   const char *cells_name);
+
+/**
  * ofnode_path() - find a node by full path
  *
  * @path: Full path to node, e.g. "/bus/spi@1"
diff --git a/include/dm/read.h b/include/dm/read.h
index c2ca7ae..c3a4a56 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -199,6 +199,24 @@
 				struct ofnode_phandle_args *out_args);
 
 /**
+ * dev_count_phandle_with_args() - Return phandle number in a list
+ *
+ * This function is usefull to get phandle number contained in a property list.
+ * For example, this allows to allocate the right amount of memory to keep
+ * clock's reference contained into the "clocks" property.
+ *
+ *
+ * @dev:	device whose node containing a list
+ * @list_name:	property name that contains a list
+ * @cells_name:	property name that specifies phandles' arguments count
+ * @Returns number of phandle found on success, on error returns appropriate
+ * errno value.
+ */
+
+int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
+				const char *cells_name);
+
+/**
  * dev_read_addr_cells() - Get the number of address cells for a device's node
  *
  * This walks back up the tree to find the closest #address-cells property
@@ -416,6 +434,13 @@
 					      out_args);
 }
 
+static inline int dev_count_phandle_with_args(struct udevice *dev,
+		const char *list_name, const char *cells_name)
+{
+	return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
+					      cells_name);
+}
+
 static inline int dev_read_addr_cells(struct udevice *dev)
 {
 	/* NOTE: this call should walk up the parent stack */
diff --git a/include/generic-phy.h b/include/generic-phy.h
index 762704c..eac5adc 100644
--- a/include/generic-phy.h
+++ b/include/generic-phy.h
@@ -122,6 +122,7 @@
 	int	(*power_off)(struct phy *phy);
 };
 
+#ifdef CONFIG_PHY
 
 /**
  * generic_phy_init() - initialize the PHY port
@@ -220,4 +221,56 @@
 int generic_phy_get_by_name(struct udevice *user, const char *phy_name,
 			    struct phy *phy);
 
+#else /* CONFIG_PHY */
+
+static inline int generic_phy_init(struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_exit(struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_reset(struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_power_on(struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_power_off(struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_get_by_index(struct udevice *user, int index,
+			     struct phy *phy)
+{
+	return 0;
+}
+
+static inline int generic_phy_get_by_name(struct udevice *user, const char *phy_name,
+			    struct phy *phy)
+{
+	return 0;
+}
+
+#endif /* CONFIG_PHY */
+
+/**
+ * generic_phy_valid() - check if PHY port is valid
+ *
+ * @phy:	the PHY port to check
+ * @return TRUE if valid, or FALSE
+ */
+static inline bool generic_phy_valid(struct phy *phy)
+{
+	return phy->dev != NULL;
+}
+
 #endif /*__GENERIC_PHY_H */
diff --git a/include/reset.h b/include/reset.h
index f45fcf8..7185ade 100644
--- a/include/reset.h
+++ b/include/reset.h
@@ -100,6 +100,15 @@
 		      struct reset_ctl *reset_ctl);
 
 /**
+ * reset_request - Request a reset signal.
+ *
+ * @reset_ctl:	A reset control struct.
+ *
+ * @return 0 if OK, or a negative error code.
+ */
+int reset_request(struct reset_ctl *reset_ctl);
+
+/**
  * reset_free - Free a previously requested reset signal.
  *
  * @reset_ctl:	A reset control struct that was previously successfully
@@ -135,6 +144,18 @@
  */
 int reset_deassert(struct reset_ctl *reset_ctl);
 
+/**
+ * reset_release_all - Assert/Free an array of previously requested resets.
+ *
+ * For each reset contained in the reset array, this function will check if
+ * reset has been previously requested and then will assert and free it.
+ *
+ * @reset_ctl:	A reset struct array that was previously successfully
+ *		requested by reset_get_by_*().
+ * @count	Number of reset contained in the array
+ * @return 0 if OK, or a negative error code.
+ */
+int reset_release_all(struct reset_ctl *reset_ctl, int count);
 #else
 static inline int reset_get_by_index(struct udevice *dev, int index,
 				     struct reset_ctl *reset_ctl)
@@ -162,6 +183,12 @@
 {
 	return 0;
 }
+
+static inline int reset_release_all(struct reset_ctl *reset_ctl, int count)
+{
+	return 0;
+}
+
 #endif
 
 #endif
diff --git a/include/usb.h b/include/usb.h
index 62f051f..fad0401 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -537,6 +537,21 @@
 	unsigned short wHubChange;
 } __attribute__ ((packed));
 
+/*
+ * Hub Device descriptor
+ * USB Hub class device protocols
+ */
+#define USB_HUB_PR_FS		0 /* Full speed hub */
+#define USB_HUB_PR_HS_NO_TT	0 /* Hi-speed hub without TT */
+#define USB_HUB_PR_HS_SINGLE_TT	1 /* Hi-speed hub with single TT */
+#define USB_HUB_PR_HS_MULTI_TT	2 /* Hi-speed hub with multiple TT */
+#define USB_HUB_PR_SS		3 /* Super speed hub */
+
+/* Transaction Translator Think Times, in bits */
+#define HUB_TTTT_8_BITS		0x00
+#define HUB_TTTT_16_BITS	0x20
+#define HUB_TTTT_24_BITS	0x40
+#define HUB_TTTT_32_BITS	0x60
 
 /* Hub descriptor */
 struct usb_hub_descriptor {
@@ -546,10 +561,20 @@
 	unsigned short wHubCharacteristics;
 	unsigned char  bPwrOn2PwrGood;
 	unsigned char  bHubContrCurrent;
-	unsigned char  DeviceRemovable[(USB_MAXCHILDREN+1+7)/8];
-	unsigned char  PortPowerCtrlMask[(USB_MAXCHILDREN+1+7)/8];
-	/* DeviceRemovable and PortPwrCtrlMask want to be variable-length
-	   bitmaps that hold max 255 entries. (bit0 is ignored) */
+	/* 2.0 and 3.0 hubs differ here */
+	union {
+		struct {
+			/* add 1 bit for hub status change; round to bytes */
+			__u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
+			__u8 PortPowerCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
+		} __attribute__ ((packed)) hs;
+
+		struct {
+			__u8 bHubHdrDecLat;
+			__le16 wHubDelay;
+			__le16 DeviceRemovable;
+		} __attribute__ ((packed)) ss;
+	} u;
 } __attribute__ ((packed));
 
 
@@ -560,6 +585,8 @@
 	ulong connect_timeout;		/* Device connection timeout in ms */
 	ulong query_delay;		/* Device query delay in ms */
 	int overcurrent_count[USB_MAXCHILDREN];	/* Over-current counter */
+	int hub_depth;			/* USB 3.0 hub depth */
+	struct usb_tt tt;		/* Transaction Translator */
 };
 
 #ifdef CONFIG_DM_USB
@@ -731,6 +758,14 @@
 	 * reset_root_port() - Reset usb root port
 	 */
 	int (*reset_root_port)(struct udevice *bus, struct usb_device *udev);
+
+	/**
+	 * update_hub_device() - Update HCD's internal representation of hub
+	 *
+	 * After a hub descriptor is fetched, notify HCD so that its internal
+	 * representation of this hub can be updated (xHCI)
+	 */
+	int (*update_hub_device)(struct udevice *bus, struct usb_device *udev);
 };
 
 #define usb_get_ops(dev)	((struct dm_usb_ops *)(dev)->driver->ops)
@@ -766,6 +801,14 @@
 		     struct usb_device *parent);
 
 /**
+ * usb_hub_is_root_hub() - Test whether a hub device is root hub or not
+ *
+ * @hub:	USB hub device to test
+ * @return:	true if the hub device is root hub, false otherwise.
+ */
+bool usb_hub_is_root_hub(struct udevice *hub);
+
+/**
  * usb_hub_scan() - Scan a hub and find its devices
  *
  * @hub:	Hub device to scan
@@ -861,24 +904,6 @@
 int usb_hub_probe(struct usb_device *dev, int ifnum);
 void usb_hub_reset(void);
 
-/**
- * legacy_hub_port_reset() - reset a port given its usb_device pointer
- *
- * Reset a hub port and see if a device is present on that port, providing
- * sufficient time for it to show itself. The port status is returned.
- *
- * With driver model this moves to hub_port_reset() and is passed a struct
- * udevice.
- *
- * @dev:	USB device to reset
- * @port:	Port number to reset (note ports are numbered from 0 here)
- * @portstat:	Returns port status
- */
-int legacy_hub_port_reset(struct usb_device *dev, int port,
-			  unsigned short *portstat);
-
-int hub_port_reset(struct udevice *dev, int port, unsigned short *portstat);
-
 /*
  * usb_find_usb2_hub_address_port() - Get hub address and port for TT setting
  *
@@ -914,6 +939,17 @@
 int usb_alloc_device(struct usb_device *dev);
 
 /**
+ * update_hub_device() - Update HCD's internal representation of hub
+ *
+ * After a hub descriptor is fetched, notify HCD so that its internal
+ * representation of this hub can be updated.
+ *
+ * @dev:		Hub device
+ * @return 0 if OK, -ve on error
+ */
+int usb_update_hub_device(struct usb_device *dev);
+
+/**
  * usb_emul_setup_device() - Set up a new USB device emulation
  *
  * This is normally called when a new emulation device is bound. It tells
@@ -926,7 +962,7 @@
  * @desc_list:		List of points or USB descriptors, terminated by NULL.
  *			The first entry must be struct usb_device_descriptor,
  *			and others follow on after that.
- * @return 0 if OK, -ve on error
+ * @return 0 if OK, -ENOSYS if not implemented, other -ve on error
  */
 int usb_emul_setup_device(struct udevice *dev, int maxpacketsize,
 			  struct usb_string *strings, void **desc_list);
diff --git a/include/usb_defs.h b/include/usb_defs.h
index 8214ba9..b7f2ead 100644
--- a/include/usb_defs.h
+++ b/include/usb_defs.h
@@ -93,6 +93,7 @@
 #define USB_DT_REPORT       (USB_TYPE_CLASS | 0x02)
 #define USB_DT_PHYSICAL     (USB_TYPE_CLASS | 0x03)
 #define USB_DT_HUB          (USB_TYPE_CLASS | 0x09)
+#define USB_DT_SS_HUB       (USB_TYPE_CLASS | 0x0a)
 
 /* Descriptor sizes per descriptor type */
 #define USB_DT_DEVICE_SIZE      18
@@ -261,12 +262,17 @@
 
 /*
  * Changes to wPortStatus bit field in USB 3.0
- * See USB 3.0 spec Table 10-11
+ * See USB 3.0 spec Table 10-10
  */
 #define USB_SS_PORT_STAT_LINK_STATE	0x01e0
 #define USB_SS_PORT_STAT_POWER		0x0200
 #define USB_SS_PORT_STAT_SPEED		0x1c00
 #define USB_SS_PORT_STAT_SPEED_5GBPS	0x0000
+/* Bits that are the same from USB 2.0 */
+#define USB_SS_PORT_STAT_MASK		(USB_PORT_STAT_CONNECTION | \
+					 USB_PORT_STAT_ENABLE | \
+					 USB_PORT_STAT_OVERCURRENT | \
+					 USB_PORT_STAT_RESET)
 
 /* wPortChange bits */
 #define USB_PORT_STAT_C_CONNECTION  0x0001
@@ -287,6 +293,7 @@
 #define HUB_CHAR_LPSM               0x0003
 #define HUB_CHAR_COMPOUND           0x0004
 #define HUB_CHAR_OCPM               0x0018
+#define HUB_CHAR_TTTT               0x0060 /* TT Think Time mask */
 
 /*
  * Hub Status & Hub Change bit masks
@@ -300,6 +307,20 @@
 /* Mask for wIndex in get/set port feature */
 #define USB_HUB_PORT_MASK	0xf
 
+/* Hub class request codes */
+#define USB_REQ_SET_HUB_DEPTH	0x0c
+
+/*
+ * As of USB 2.0, full/low speed devices are segregated into trees.
+ * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
+ * The other type grows from high speed hubs when they connect to
+ * full/low speed devices using "Transaction Translators" (TTs).
+ */
+struct usb_tt {
+	bool		multi;		/* true means one TT per port */
+	unsigned	think_time;	/* think time in ns */
+};
+
 /*
  * CBI style
  */
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 93f0bf4..2d642de 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -4868,7 +4868,6 @@
 CONFIG_SYS_USBCTRL
 CONFIG_SYS_USBD_BASE
 CONFIG_SYS_USB_EHCI_CPU_INIT
-CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS
 CONFIG_SYS_USB_EHCI_REGS_BASE
 CONFIG_SYS_USB_FAT_BOOT_PARTITION
 CONFIG_SYS_USB_HOST
@@ -4877,7 +4876,6 @@
 CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS
 CONFIG_SYS_USB_OHCI_REGS_BASE
 CONFIG_SYS_USB_OHCI_SLOT_NAME
-CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS
 CONFIG_SYS_USER_SWITCHES_BASE
 CONFIG_SYS_USE_BOOT_NORFLASH
 CONFIG_SYS_USE_DATAFLASH
@@ -5196,7 +5194,6 @@
 CONFIG_USB_XHCI_FSL
 CONFIG_USB_XHCI_KEYSTONE
 CONFIG_USB_XHCI_OMAP
-CONFIG_USB_XHCI_PCI
 CONFIG_USER_LOWLEVEL_INIT
 CONFIG_USE_FDT
 CONFIG_USE_INTERRUPT