diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index 1991cb5cf6bf..04990812181d 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -97,13 +97,23 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
 	 * can be restricted later depending on strap pin configuration.
 	 */
 	if (dr_mode == USB_DR_MODE_UNKNOWN) {
-		if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) &&
-		    IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
-			dr_mode = USB_DR_MODE_OTG;
-		else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST))
-			dr_mode = USB_DR_MODE_HOST;
-		else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
-			dr_mode = USB_DR_MODE_PERIPHERAL;
+		if (cdns->version == CDNSP_CONTROLLER_V2) {
+			if (IS_ENABLED(CONFIG_USB_CDNSP_HOST) &&
+			    IS_ENABLED(CONFIG_USB_CDNSP_GADGET))
+				dr_mode = USB_DR_MODE_OTG;
+			else if (IS_ENABLED(CONFIG_USB_CDNSP_HOST))
+				dr_mode = USB_DR_MODE_HOST;
+			else if (IS_ENABLED(CONFIG_USB_CDNSP_GADGET))
+				dr_mode = USB_DR_MODE_PERIPHERAL;
+		} else {
+			if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) &&
+			    IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
+				dr_mode = USB_DR_MODE_OTG;
+			else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST))
+				dr_mode = USB_DR_MODE_HOST;
+			else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
+				dr_mode = USB_DR_MODE_PERIPHERAL;
+		}
 	}
 
 	/*
diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h
index 3176f924293a..0d87871499ea 100644
--- a/drivers/usb/cdns3/core.h
+++ b/drivers/usb/cdns3/core.h
@@ -55,7 +55,9 @@ struct cdns3_platform_data {
  * @otg_res: the resource for otg
  * @otg_v0_regs: pointer to base of v0 otg registers
  * @otg_v1_regs: pointer to base of v1 otg registers
+ * @otg_cdnsp_regs: pointer to base of CDNSP otg registers
  * @otg_regs: pointer to base of otg registers
+ * @otg_irq_regs: pointer to interrupt registers
  * @otg_irq: irq number for otg controller
  * @dev_irq: irq number for device controller
  * @wakeup_irq: irq number for wakeup event, it is optional
@@ -86,9 +88,12 @@ struct cdns3 {
 	struct resource			otg_res;
 	struct cdns3_otg_legacy_regs	*otg_v0_regs;
 	struct cdns3_otg_regs		*otg_v1_regs;
+	struct cdnsp_otg_regs		*otg_cdnsp_regs;
 	struct cdns3_otg_common_regs	*otg_regs;
+	struct cdns3_otg_irq_regs	*otg_irq_regs;
 #define CDNS3_CONTROLLER_V0	0
 #define CDNS3_CONTROLLER_V1	1
+#define CDNSP_CONTROLLER_V2	2
 	u32				version;
 	bool				phyrst_a_enable;
 
diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
index 38ccd29e4cde..95863d44e3e0 100644
--- a/drivers/usb/cdns3/drd.c
+++ b/drivers/usb/cdns3/drd.c
@@ -2,13 +2,12 @@
 /*
  * Cadence USBSS DRD Driver.
  *
- * Copyright (C) 2018-2019 Cadence.
+ * Copyright (C) 2018-2020 Cadence.
  * Copyright (C) 2019 Texas Instruments
  *
  * Author: Pawel Laszczak <pawell@cadence.com>
  *         Roger Quadros <rogerq@ti.com>
  *
- *
  */
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
@@ -28,8 +27,9 @@
  *
  * Returns 0 on success otherwise negative errno
  */
-int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
+static int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
 {
+	u32 __iomem *override_reg;
 	u32 reg;
 
 	switch (mode) {
@@ -39,11 +39,24 @@ int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
 		break;
 	case USB_DR_MODE_OTG:
 		dev_dbg(cdns->dev, "Set controller to OTG mode\n");
-		if (cdns->version == CDNS3_CONTROLLER_V1) {
-			reg = readl(&cdns->otg_v1_regs->override);
+
+		if (cdns->version == CDNSP_CONTROLLER_V2)
+			override_reg = &cdns->otg_cdnsp_regs->override;
+		else if (cdns->version == CDNS3_CONTROLLER_V1)
+			override_reg = &cdns->otg_v1_regs->override;
+		else
+			override_reg = &cdns->otg_v0_regs->ctrl1;
+
+		reg = readl(override_reg);
+
+		if (cdns->version != CDNS3_CONTROLLER_V0)
 			reg |= OVERRIDE_IDPULLUP;
-			writel(reg, &cdns->otg_v1_regs->override);
+		else
+			reg |= OVERRIDE_IDPULLUP_V0;
 
+		writel(reg, override_reg);
+
+		if (cdns->version == CDNS3_CONTROLLER_V1) {
 			/*
 			 * Enable work around feature built into the
 			 * controller to address issue with RX Sensitivity
@@ -55,10 +68,6 @@ int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
 				reg |= PHYRST_CFG_PHYRST_A_ENABLE;
 				writel(reg, &cdns->otg_v1_regs->phyrst_cfg);
 			}
-		} else {
-			reg = readl(&cdns->otg_v0_regs->ctrl1);
-			reg |= OVERRIDE_IDPULLUP_V0;
-			writel(reg, &cdns->otg_v0_regs->ctrl1);
 		}
 
 		/*
@@ -123,7 +132,7 @@ bool cdns3_is_device(struct cdns3 *cdns)
  */
 static void cdns3_otg_disable_irq(struct cdns3 *cdns)
 {
-	writel(0, &cdns->otg_regs->ien);
+	writel(0, &cdns->otg_irq_regs->ien);
 }
 
 /**
@@ -133,7 +142,7 @@ static void cdns3_otg_disable_irq(struct cdns3 *cdns)
 static void cdns3_otg_enable_irq(struct cdns3 *cdns)
 {
 	writel(OTGIEN_ID_CHANGE_INT | OTGIEN_VBUSVALID_RISE_INT |
-	       OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_regs->ien);
+	       OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_irq_regs->ien);
 }
 
 /**
@@ -144,16 +153,21 @@ static void cdns3_otg_enable_irq(struct cdns3 *cdns)
  */
 int cdns3_drd_host_on(struct cdns3 *cdns)
 {
-	u32 val;
+	u32 val, ready_bit;
 	int ret;
 
 	/* Enable host mode. */
 	writel(OTGCMD_HOST_BUS_REQ | OTGCMD_OTG_DIS,
 	       &cdns->otg_regs->cmd);
 
+	if (cdns->version == CDNSP_CONTROLLER_V2)
+		ready_bit = OTGSTS_CDNSP_XHCI_READY;
+	else
+		ready_bit = OTGSTS_CDNS3_XHCI_READY;
+
 	dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
 	ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
-					val & OTGSTS_XHCI_READY, 1, 100000);
+					val & ready_bit, 1, 100000);
 
 	if (ret)
 		dev_err(cdns->dev, "timeout waiting for xhci_ready\n");
@@ -189,17 +203,22 @@ void cdns3_drd_host_off(struct cdns3 *cdns)
  */
 int cdns3_drd_gadget_on(struct cdns3 *cdns)
 {
-	int ret, val;
 	u32 reg = OTGCMD_OTG_DIS;
+	u32 ready_bit;
+	int ret, val;
 
 	/* switch OTG core */
 	writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);
 
 	dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");
 
+	if (cdns->version == CDNSP_CONTROLLER_V2)
+		ready_bit = OTGSTS_CDNSP_DEV_READY;
+	else
+		ready_bit = OTGSTS_CDNS3_DEV_READY;
+
 	ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
-					val & OTGSTS_DEV_READY,
-					1, 100000);
+					val & ready_bit, 1, 100000);
 	if (ret) {
 		dev_err(cdns->dev, "timeout waiting for dev_ready\n");
 		return ret;
@@ -244,7 +263,7 @@ static int cdns3_init_otg_mode(struct cdns3 *cdns)
 
 	cdns3_otg_disable_irq(cdns);
 	/* clear all interrupts */
-	writel(~0, &cdns->otg_regs->ivect);
+	writel(~0, &cdns->otg_irq_regs->ivect);
 
 	ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG);
 	if (ret)
@@ -313,7 +332,7 @@ static irqreturn_t cdns3_drd_irq(int irq, void *data)
 	if (cdns->in_lpm)
 		return ret;
 
-	reg = readl(&cdns->otg_regs->ivect);
+	reg = readl(&cdns->otg_irq_regs->ivect);
 
 	if (!reg)
 		return IRQ_NONE;
@@ -332,7 +351,7 @@ static irqreturn_t cdns3_drd_irq(int irq, void *data)
 		ret = IRQ_WAKE_THREAD;
 	}
 
-	writel(~0, &cdns->otg_regs->ivect);
+	writel(~0, &cdns->otg_irq_regs->ivect);
 	return ret;
 }
 
@@ -347,28 +366,43 @@ int cdns3_drd_init(struct cdns3 *cdns)
 		return PTR_ERR(regs);
 
 	/* Detection of DRD version. Controller has been released
-	 * in two versions. Both are similar, but they have same changes
-	 * in register maps.
-	 * The first register in old version is command register and it's read
-	 * only, so driver should read 0 from it. On the other hand, in v1
-	 * the first register contains device ID number which is not set to 0.
-	 * Driver uses this fact to detect the proper version of
+	 * in three versions. All are very similar and are software compatible,
+	 * but they have same changes in register maps.
+	 * The first register in oldest version is command register and it's
+	 * read only. Driver should read 0 from it. On the other hand, in v1
+	 * and v2 the first register contains device ID number which is not
+	 * set to 0. Driver uses this fact to detect the proper version of
 	 * controller.
 	 */
 	cdns->otg_v0_regs = regs;
 	if (!readl(&cdns->otg_v0_regs->cmd)) {
 		cdns->version  = CDNS3_CONTROLLER_V0;
 		cdns->otg_v1_regs = NULL;
+		cdns->otg_cdnsp_regs = NULL;
 		cdns->otg_regs = regs;
+		cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
+				     &cdns->otg_v0_regs->ien;
 		writel(1, &cdns->otg_v0_regs->simulate);
 		dev_dbg(cdns->dev, "DRD version v0 (%08x)\n",
 			 readl(&cdns->otg_v0_regs->version));
 	} else {
 		cdns->otg_v0_regs = NULL;
 		cdns->otg_v1_regs = regs;
+		cdns->otg_cdnsp_regs = regs;
+
 		cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;
-		cdns->version  = CDNS3_CONTROLLER_V1;
-		writel(1, &cdns->otg_v1_regs->simulate);
+
+		if (cdns->otg_cdnsp_regs->did == OTG_CDNSP_DID) {
+			cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
+					      &cdns->otg_cdnsp_regs->ien;
+			cdns->version  = CDNSP_CONTROLLER_V2;
+		} else {
+			cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
+					      &cdns->otg_v1_regs->ien;
+			writel(1, &cdns->otg_v1_regs->simulate);
+			cdns->version  = CDNS3_CONTROLLER_V1;
+		}
+
 		dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",
 			 readl(&cdns->otg_v1_regs->did),
 			 readl(&cdns->otg_v1_regs->rid));
@@ -378,10 +412,17 @@ int cdns3_drd_init(struct cdns3 *cdns)
 
 	/* Update dr_mode according to STRAP configuration. */
 	cdns->dr_mode = USB_DR_MODE_OTG;
-	if (state == OTGSTS_STRAP_HOST) {
+
+	if ((cdns->version == CDNSP_CONTROLLER_V2 &&
+	     state == OTGSTS_CDNSP_STRAP_HOST) ||
+	    (cdns->version != CDNSP_CONTROLLER_V2 &&
+	     state == OTGSTS_STRAP_HOST)) {
 		dev_dbg(cdns->dev, "Controller strapped to HOST\n");
 		cdns->dr_mode = USB_DR_MODE_HOST;
-	} else if (state == OTGSTS_STRAP_GADGET) {
+	} else if ((cdns->version == CDNSP_CONTROLLER_V2 &&
+		    state == OTGSTS_CDNSP_STRAP_GADGET) ||
+		   (cdns->version != CDNSP_CONTROLLER_V2 &&
+		    state == OTGSTS_STRAP_GADGET)) {
 		dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");
 		cdns->dr_mode = USB_DR_MODE_PERIPHERAL;
 	}
diff --git a/drivers/usb/cdns3/drd.h b/drivers/usb/cdns3/drd.h
index f1ccae285a16..a767b6893938 100644
--- a/drivers/usb/cdns3/drd.h
+++ b/drivers/usb/cdns3/drd.h
@@ -1,8 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Cadence USB3 DRD header file.
+ * Cadence USB3 and USBSSP DRD header file.
  *
- * Copyright (C) 2018-2019 Cadence.
+ * Copyright (C) 2018-2020 Cadence.
  *
  * Author: Pawel Laszczak <pawell@cadence.com>
  */
@@ -13,7 +13,7 @@
 #include <linux/phy/phy.h>
 #include "core.h"
 
-/*  DRD register interface for version v1. */
+/*  DRD register interface for version v1 of cdns3 driver. */
 struct cdns3_otg_regs {
 	__le32 did;
 	__le32 rid;
@@ -38,7 +38,7 @@ struct cdns3_otg_regs {
 	__le32 ctrl2;
 };
 
-/*  DRD register interface for version v0. */
+/*  DRD register interface for version v0 of cdns3 driver. */
 struct cdns3_otg_legacy_regs {
 	__le32 cmd;
 	__le32 sts;
@@ -57,14 +57,45 @@ struct cdns3_otg_legacy_regs {
 	__le32 ctrl1;
 };
 
+/* DRD register interface for cdnsp driver */
+struct cdnsp_otg_regs {
+	__le32 did;
+	__le32 rid;
+	__le32 cfgs1;
+	__le32 cfgs2;
+	__le32 cmd;
+	__le32 sts;
+	__le32 state;
+	__le32 ien;
+	__le32 ivect;
+	__le32 tmr;
+	__le32 simulate;
+	__le32 adpbc_sts;
+	__le32 adp_ramp_time;
+	__le32 adpbc_ctrl1;
+	__le32 adpbc_ctrl2;
+	__le32 override;
+	__le32 vbusvalid_dbnc_cfg;
+	__le32 sessvalid_dbnc_cfg;
+	__le32 susp_timing_ctrl;
+};
+
+#define OTG_CDNSP_DID	0x0004034E
+
 /*
- * Common registers interface for both version of DRD.
+ * Common registers interface for both CDNS3 and CDNSP version of DRD.
  */
 struct cdns3_otg_common_regs {
 	__le32 cmd;
 	__le32 sts;
 	__le32 state;
-	__le32 different1;
+};
+
+/*
+ * Interrupt related registers. This registers are mapped in different
+ * location for CDNSP controller.
+ */
+struct cdns3_otg_irq_regs {
 	__le32 ien;
 	__le32 ivect;
 };
@@ -92,9 +123,9 @@ struct cdns3_otg_common_regs {
 #define OTGCMD_DEV_BUS_DROP		BIT(8)
 /* Drop the bus for Host mode*/
 #define OTGCMD_HOST_BUS_DROP		BIT(9)
-/* Power Down USBSS-DEV. */
+/* Power Down USBSS-DEV - only for CDNS3.*/
 #define OTGCMD_DEV_POWER_OFF		BIT(11)
-/* Power Down CDNSXHCI. */
+/* Power Down CDNSXHCI - only for CDNS3. */
 #define OTGCMD_HOST_POWER_OFF		BIT(12)
 
 /* OTGIEN - bitmasks */
@@ -123,20 +154,31 @@ struct cdns3_otg_common_regs {
 #define OTGSTS_OTG_NRDY_MASK		BIT(11)
 #define OTGSTS_OTG_NRDY(p)		((p) & OTGSTS_OTG_NRDY_MASK)
 /*
- * Value of the strap pins.
+ * Value of the strap pins for:
+ * CDNS3:
  * 000 - no default configuration
  * 010 - Controller initiall configured as Host
  * 100 - Controller initially configured as Device
+ * CDNSP:
+ * 000 - No default configuration.
+ * 010 - Controller initiall configured as Host.
+ * 100 - Controller initially configured as Device.
  */
 #define OTGSTS_STRAP(p)			(((p) & GENMASK(14, 12)) >> 12)
 #define OTGSTS_STRAP_NO_DEFAULT_CFG	0x00
 #define OTGSTS_STRAP_HOST_OTG		0x01
 #define OTGSTS_STRAP_HOST		0x02
 #define OTGSTS_STRAP_GADGET		0x04
+#define OTGSTS_CDNSP_STRAP_HOST		0x01
+#define OTGSTS_CDNSP_STRAP_GADGET	0x02
+
 /* Host mode is turned on. */
-#define OTGSTS_XHCI_READY		BIT(26)
+#define OTGSTS_CDNS3_XHCI_READY		BIT(26)
+#define OTGSTS_CDNSP_XHCI_READY		BIT(27)
+
 /* "Device mode is turned on .*/
-#define OTGSTS_DEV_READY		BIT(27)
+#define OTGSTS_CDNS3_DEV_READY		BIT(27)
+#define OTGSTS_CDNSP_DEV_READY		BIT(26)
 
 /* OTGSTATE- bitmasks */
 #define OTGSTATE_DEV_STATE_MASK		GENMASK(2, 0)
@@ -152,6 +194,8 @@ struct cdns3_otg_common_regs {
 #define OVERRIDE_IDPULLUP		BIT(0)
 /* Only for CDNS3_CONTROLLER_V0 version */
 #define OVERRIDE_IDPULLUP_V0		BIT(24)
+/* Vbusvalid/Sesvalid override select. */
+#define OVERRIDE_SESS_VLD_SEL		BIT(10)
 
 /* PHYRST_CFG - bitmasks */
 #define PHYRST_CFG_PHYRST_A_ENABLE     BIT(0)
@@ -170,6 +214,5 @@ int cdns3_drd_gadget_on(struct cdns3 *cdns);
 void cdns3_drd_gadget_off(struct cdns3 *cdns);
 int cdns3_drd_host_on(struct cdns3 *cdns);
 void cdns3_drd_host_off(struct cdns3 *cdns);
-int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode);
 
 #endif /* __LINUX_CDNS3_DRD */
