drivers: st: usb: dwc2: Add driver for OTG USB

Add driver for Synopsis DWC2 USB IP block used on
STM32MP15x for USB OTG.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: I90b21f094f6637b85f3ace23a3a3a2f6fd4e0951
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/177368


Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@st.com>
Tested-by: Yann GAUTIER <yann.gautier@st.com>

drivers/st/usb_dwc2/usb_dwc2.c

+/*
+ * Copyright (c) 2020, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include <platform_def.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <drivers/st/usb_dwc2.h>
+#include <lib/mmio.h>
+
+#define USB_OTG_MODE_DEVICE			0U
+#define USB_OTG_MODE_HOST			1U
+#define USB_OTG_MODE_DRD			2U
+
+#define EP_TYPE_CTRL				0U
+#define EP_TYPE_ISOC				1U
+#define EP_TYPE_BULK				2U
+#define EP_TYPE_INTR				3U
+
+#define USBD_FIFO_FLUSH_TIMEOUT_US		1000U
+#define EP0_FIFO_SIZE				64U
+
+/* OTG registers offsets */
+#define OTG_GOTGINT				0x004U
+#define OTG_GAHBCFG				0x008U
+#define OTG_GUSBCFG				0x00CU
+#define OTG_GRSTCTL				0x010U
+#define OTG_GINTSTS				0x014U
+#define OTG_GINTMSK				0x018U
+#define OTG_GRXSTSP				0x020U
+#define OTG_GLPMCFG				0x054U
+#define OTG_DCFG				0x800U
+#define OTG_DCTL				0x804U
+#define OTG_DSTS				0x808U
+#define OTG_DIEPMSK				0x810U
+#define OTG_DOEPMSK				0x814U
+#define OTG_DAINT				0x818U
+#define OTG_DAINTMSK				0x81CU
+#define OTG_DIEPEMPMSK				0x834U
+
+/* Definitions for OTG_DIEPx registers */
+#define OTG_DIEP_BASE				0x900U
+#define OTG_DIEP_SIZE				0x20U
+#define OTG_DIEPCTL				0x00U
+#define OTG_DIEPINT				0x08U
+#define OTG_DIEPTSIZ				0x10U
+#define OTG_DIEPDMA				0x14U
+#define OTG_DTXFSTS				0x18U
+#define OTG_DIEP_MAX_NB				9U
+
+/* Definitions for OTG_DOEPx registers */
+#define OTG_DOEP_BASE				0xB00U
+#define OTG_DOEP_SIZE				0x20U
+#define OTG_DOEPCTL				0x00U
+#define OTG_DOEPINT				0x08U
+#define OTG_DOEPTSIZ				0x10U
+#define OTG_DOEPDMA				0x14U
+#define OTG_D0EP_MAX_NB				9U
+
+/* Definitions for OTG_DAINT registers */
+#define OTG_DAINT_OUT_MASK			GENMASK(31, 16)
+#define OTG_DAINT_OUT_SHIFT			16U
+#define OTG_DAINT_IN_MASK			GENMASK(15, 0)
+#define OTG_DAINT_IN_SHIFT			0U
+
+#define OTG_DAINT_EP0_IN			BIT(16)
+#define OTG_DAINT_EP0_OUT			BIT(0)
+
+/* Definitions for FIFOs */
+#define OTG_FIFO_BASE				0x1000U
+#define OTG_FIFO_SIZE				0x1000U
+
+/* Bit definitions for OTG_GOTGINT register */
+#define OTG_GOTGINT_SEDET			BIT(2)
+
+/* Bit definitions for OTG_GAHBCFG register */
+#define OTG_GAHBCFG_GINT			BIT(0)
+
+/* Bit definitions for OTG_GUSBCFG register */
+#define OTG_GUSBCFG_TRDT			GENMASK(13, 10)
+#define OTG_GUSBCFG_TRDT_SHIFT			10U
+
+#define USBD_HS_TRDT_VALUE			9U
+
+/* Bit definitions for OTG_GRSTCTL register */
+#define OTG_GRSTCTL_RXFFLSH			BIT(4)
+#define OTG_GRSTCTL_TXFFLSH			BIT(5)
+#define OTG_GRSTCTL_TXFNUM_SHIFT		6U
+
+/* Bit definitions for OTG_GINTSTS register */
+#define OTG_GINTSTS_CMOD			BIT(0)
+#define OTG_GINTSTS_MMIS			BIT(1)
+#define OTG_GINTSTS_OTGINT			BIT(2)
+#define OTG_GINTSTS_SOF				BIT(3)
+#define OTG_GINTSTS_RXFLVL			BIT(4)
+#define OTG_GINTSTS_USBSUSP			BIT(11)
+#define OTG_GINTSTS_USBRST			BIT(12)
+#define OTG_GINTSTS_ENUMDNE			BIT(13)
+#define OTG_GINTSTS_IEPINT			BIT(18)
+#define OTG_GINTSTS_OEPINT			BIT(19)
+#define OTG_GINTSTS_IISOIXFR			BIT(20)
+#define OTG_GINTSTS_IPXFR_INCOMPISOOUT		BIT(21)
+#define OTG_GINTSTS_LPMINT			BIT(27)
+#define OTG_GINTSTS_SRQINT			BIT(30)
+#define OTG_GINTSTS_WKUPINT			BIT(31)
+
+/* Bit definitions for OTG_GRXSTSP register */
+#define OTG_GRXSTSP_EPNUM			GENMASK(3, 0)
+#define OTG_GRXSTSP_BCNT			GENMASK(14, 4)
+#define OTG_GRXSTSP_BCNT_SHIFT			4U
+#define OTG_GRXSTSP_PKTSTS			GENMASK(20, 17)
+#define OTG_GRXSTSP_PKTSTS_SHIFT		17U
+
+#define STS_GOUT_NAK				1U
+#define STS_DATA_UPDT				2U
+#define STS_XFER_COMP				3U
+#define STS_SETUP_COMP				4U
+#define STS_SETUP_UPDT				6U
+
+/* Bit definitions for OTG_GLPMCFG register */
+#define OTG_GLPMCFG_BESL			GENMASK(5, 2)
+
+/* Bit definitions for OTG_DCFG register */
+#define OTG_DCFG_DAD				GENMASK(10, 4)
+#define OTG_DCFG_DAD_SHIFT			4U
+
+/* Bit definitions for OTG_DCTL register */
+#define OTG_DCTL_RWUSIG				BIT(0)
+#define OTG_DCTL_SDIS				BIT(1)
+#define OTG_DCTL_CGINAK				BIT(8)
+
+/* Bit definitions for OTG_DSTS register */
+#define OTG_DSTS_SUSPSTS			BIT(0)
+#define OTG_DSTS_ENUMSPD_MASK			GENMASK(2, 1)
+#define OTG_DSTS_FNSOF0				BIT(8)
+
+#define OTG_DSTS_ENUMSPD(val)			((val) << 1)
+#define OTG_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ	OTG_DSTS_ENUMSPD(0U)
+#define OTG_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ	OTG_DSTS_ENUMSPD(1U)
+#define OTG_DSTS_ENUMSPD_LS_PHY_6MHZ		OTG_DSTS_ENUMSPD(2U)
+#define OTG_DSTS_ENUMSPD_FS_PHY_48MHZ		OTG_DSTS_ENUMSPD(3U)
+
+/* Bit definitions for OTG_DIEPMSK register */
+#define OTG_DIEPMSK_XFRCM			BIT(0)
+#define OTG_DIEPMSK_EPDM			BIT(1)
+#define OTG_DIEPMSK_TOM				BIT(3)
+
+/* Bit definitions for OTG_DOEPMSK register */
+#define OTG_DOEPMSK_XFRCM			BIT(0)
+#define OTG_DOEPMSK_EPDM			BIT(1)
+#define OTG_DOEPMSK_STUPM			BIT(3)
+
+/* Bit definitions for OTG_DIEPCTLx registers */
+#define OTG_DIEPCTL_MPSIZ			GENMASK(10, 0)
+#define OTG_DIEPCTL_STALL			BIT(21)
+#define OTG_DIEPCTL_CNAK			BIT(26)
+#define OTG_DIEPCTL_SD0PID_SEVNFRM		BIT(28)
+#define OTG_DIEPCTL_SODDFRM			BIT(29)
+#define OTG_DIEPCTL_EPDIS			BIT(30)
+#define OTG_DIEPCTL_EPENA			BIT(31)
+
+/* Bit definitions for OTG_DIEPINTx registers */
+#define OTG_DIEPINT_XFRC			BIT(0)
+#define OTG_DIEPINT_EPDISD			BIT(1)
+#define OTG_DIEPINT_TOC				BIT(3)
+#define OTG_DIEPINT_ITTXFE			BIT(4)
+#define OTG_DIEPINT_INEPNE			BIT(6)
+#define OTG_DIEPINT_TXFE			BIT(7)
+#define OTG_DIEPINT_TXFE_SHIFT			7U
+
+#define OTG_DIEPINT_MASK			(BIT(13) | BIT(11) | GENMASK(9, 0))
+
+/* Bit definitions for OTG_DIEPTSIZx registers */
+#define OTG_DIEPTSIZ_XFRSIZ			GENMASK(18, 0)
+#define OTG_DIEPTSIZ_PKTCNT			GENMASK(28, 19)
+#define OTG_DIEPTSIZ_PKTCNT_SHIFT		19U
+#define OTG_DIEPTSIZ_MCNT_MASK			GENMASK(30, 29)
+#define OTG_DIEPTSIZ_MCNT_DATA0			BIT(29)
+
+#define OTG_DIEPTSIZ_PKTCNT_1			BIT(19)
+
+/* Bit definitions for OTG_DTXFSTSx registers */
+#define OTG_DTXFSTS_INEPTFSAV			GENMASK(15, 0)
+
+/* Bit definitions for OTG_DOEPCTLx registers */
+#define OTG_DOEPCTL_STALL			BIT(21)
+#define OTG_DOEPCTL_CNAK			BIT(26)
+#define OTG_DOEPCTL_SD0PID_SEVNFRM		BIT(28) /* other than endpoint 0 */
+#define OTG_DOEPCTL_SD1PID_SODDFRM		BIT(29) /* other than endpoint 0 */
+#define OTG_DOEPCTL_EPDIS			BIT(30)
+#define OTG_DOEPCTL_EPENA			BIT(31)
+
+/* Bit definitions for OTG_DOEPTSIZx registers */
+#define OTG_DOEPTSIZ_XFRSIZ			GENMASK(18, 0)
+#define OTG_DOEPTSIZ_PKTCNT			GENMASK(28, 19)
+#define OTG_DOEPTSIZ_RXDPID_STUPCNT		GENMASK(30, 29)
+
+/* Bit definitions for OTG_DOEPINTx registers */
+#define OTG_DOEPINT_XFRC			BIT(0)
+#define OTG_DOEPINT_STUP			BIT(3)
+#define OTG_DOEPINT_OTEPDIS			BIT(4)
+
+#define OTG_DOEPINT_MASK			(GENMASK(15, 12) | GENMASK(9, 8) | GENMASK(6, 0))
+
+#define EP_NB					15U
+#define EP_ALL					0x10U
+
+/*
+ * @brief  Flush TX FIFO.
+ * @param  handle: PCD handle.
+ * @param  num: FIFO number.
+ *	   This parameter can be a value from 1 to 15 or EP_ALL.
+ *	   EP_ALL= 0x10 means Flush all TX FIFOs
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_flush_tx_fifo(void *handle, uint32_t num)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint64_t timeout = timeout_init_us(USBD_FIFO_FLUSH_TIMEOUT_US);
+
+	mmio_write_32(usb_base_addr + OTG_GRSTCTL,
+		      OTG_GRSTCTL_TXFFLSH | (uint32_t)(num << OTG_GRSTCTL_TXFNUM_SHIFT));
+
+	while ((mmio_read_32(usb_base_addr + OTG_GRSTCTL) &
+		OTG_GRSTCTL_TXFFLSH) == OTG_GRSTCTL_TXFFLSH)
+		if (timeout_elapsed(timeout)) {
+			return USBD_TIMEOUT;
+		}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Flush RX FIFO.
+ * @param  handle: PCD handle.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_flush_rx_fifo(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint64_t timeout = timeout_init_us(USBD_FIFO_FLUSH_TIMEOUT_US);
+
+	mmio_write_32(usb_base_addr + OTG_GRSTCTL, OTG_GRSTCTL_RXFFLSH);
+
+	while ((mmio_read_32(usb_base_addr + OTG_GRSTCTL) &
+		 OTG_GRSTCTL_RXFFLSH) == OTG_GRSTCTL_RXFFLSH)
+		if (timeout_elapsed(timeout)) {
+			return USBD_TIMEOUT;
+		}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Return the global USB interrupt status.
+ * @param  handle: PCD handle.
+ * @retval Interrupt register value.
+ */
+static uint32_t usb_dwc2_read_int(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	return mmio_read_32(usb_base_addr + OTG_GINTSTS) &
+	       mmio_read_32(usb_base_addr + OTG_GINTMSK);
+}
+
+/*
+ * @brief  Return the USB device OUT endpoints interrupt.
+ * @param  handle: PCD handle.
+ * @retval Device OUT endpoint interrupts.
+ */
+static uint32_t usb_dwc2_all_out_ep_int(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	return ((mmio_read_32(usb_base_addr + OTG_DAINT) &
+		 mmio_read_32(usb_base_addr + OTG_DAINTMSK)) &
+		OTG_DAINT_OUT_MASK) >> OTG_DAINT_OUT_SHIFT;
+}
+
+/*
+ * @brief  Return the USB device IN endpoints interrupt.
+ * @param  handle: PCD handle.
+ * @retval Device IN endpoint interrupts.
+ */
+static uint32_t usb_dwc2_all_in_ep_int(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	return ((mmio_read_32(usb_base_addr + OTG_DAINT) &
+		 mmio_read_32(usb_base_addr + OTG_DAINTMSK)) &
+		OTG_DAINT_IN_MASK) >> OTG_DAINT_IN_SHIFT;
+}
+
+/*
+ * @brief  Return Device OUT EP interrupt register.
+ * @param  handle: PCD handle.
+ * @param  epnum: Endpoint number.
+ *         This parameter can be a value from 0 to 15.
+ * @retval Device OUT EP Interrupt register.
+ */
+static uint32_t usb_dwc2_out_ep_int(void *handle, uint8_t epnum)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	return mmio_read_32(usb_base_addr + OTG_DOEP_BASE +
+			    (epnum * OTG_DOEP_SIZE) + OTG_DOEPINT) &
+	       mmio_read_32(usb_base_addr + OTG_DOEPMSK);
+}
+
+/*
+ * @brief  Return Device IN EP interrupt register.
+ * @param  handle: PCD handle.
+ * @param  epnum: Endpoint number.
+ *         This parameter can be a value from 0 to 15.
+ * @retval Device IN EP Interrupt register.
+ */
+static uint32_t usb_dwc2_in_ep_int(void *handle, uint8_t epnum)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t msk;
+	uint32_t emp;
+
+	msk = mmio_read_32(usb_base_addr + OTG_DIEPMSK);
+	emp = mmio_read_32(usb_base_addr + OTG_DIEPEMPMSK);
+	msk |= ((emp >> epnum) << OTG_DIEPINT_TXFE_SHIFT) & OTG_DIEPINT_TXFE;
+
+	return mmio_read_32(usb_base_addr + OTG_DIEP_BASE +
+			    (epnum * OTG_DIEP_SIZE) + OTG_DIEPINT) & msk;
+}
+
+/*
+ * @brief  Return USB core mode.
+ * @param  handle: PCD handle.
+ * @retval Core mode.
+ *         This parameter can be one of the these values:
+ *          0 : Host.
+ *          1 : Device.
+ */
+static uint32_t usb_dwc2_get_mode(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	return mmio_read_32(usb_base_addr + OTG_GINTSTS) & OTG_GINTSTS_CMOD;
+}
+
+/*
+ * @brief  Activate EP0 for detup transactions.
+ * @param  handle: PCD handle.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_activate_setup(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uintptr_t reg_offset = usb_base_addr + OTG_DIEP_BASE;
+
+	/* Set the MPS of the IN EP based on the enumeration speed */
+	mmio_clrbits_32(reg_offset + OTG_DIEPCTL, OTG_DIEPCTL_MPSIZ);
+
+	if ((mmio_read_32(usb_base_addr + OTG_DSTS) & OTG_DSTS_ENUMSPD_MASK) ==
+	    OTG_DSTS_ENUMSPD_LS_PHY_6MHZ) {
+		mmio_setbits_32(reg_offset + OTG_DIEPCTL, 3U);
+	}
+
+	mmio_setbits_32(usb_base_addr + OTG_DCTL, OTG_DCTL_CGINAK);
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Prepare the EP0 to start the first control setup.
+ * @param  handle: Selected device.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_ep0_out_start(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uintptr_t reg_offset = usb_base_addr + OTG_DIEP_BASE + OTG_DIEPTSIZ;
+	uint32_t reg_value = 0U;
+
+	/* PKTCNT = 1 and XFRSIZ = 24 bytes for endpoint 0 */
+	reg_value |= OTG_DIEPTSIZ_PKTCNT_1;
+	reg_value |= (EP0_FIFO_SIZE & OTG_DIEPTSIZ_XFRSIZ);
+	reg_value |= OTG_DOEPTSIZ_RXDPID_STUPCNT;
+
+	mmio_write_32(reg_offset, reg_value);
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Write a packet into the TX FIFO associated with the EP/channel.
+ * @param  handle: Selected device.
+ * @param  src: Pointer to source buffer.
+ * @param  ch_ep_num: Endpoint or host channel number.
+ * @param  len: Number of bytes to write.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_write_packet(void *handle, uint8_t *src,
+					  uint8_t ch_ep_num, uint16_t len)
+{
+	uint32_t reg_offset;
+	uint32_t count32b = (len + 3U) / 4U;
+	uint32_t i;
+
+	reg_offset = (uintptr_t)handle + OTG_FIFO_BASE +
+		     (ch_ep_num * OTG_FIFO_SIZE);
+
+	for (i = 0U; i < count32b; i++) {
+		uint32_t src_copy = 0U;
+		uint32_t j;
+
+		/* Data written to FIFO need to be 4 bytes aligned */
+		for (j = 0U; j < 4U; j++) {
+			src_copy += (*(src + j)) << (8U * j);
+		}
+
+		mmio_write_32(reg_offset, src_copy);
+		src += 4U;
+	}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Read a packet from the RX FIFO associated with the EP/channel.
+ * @param  handle: Selected device.
+ * @param  src: Source pointer.
+ * @param  ch_ep_num: Endpoint or host channel number.
+ * @param  len: Number of bytes to read.
+ * @retval Pointer to destination buffer.
+ */
+static void *usb_dwc2_read_packet(void *handle, uint8_t *dest, uint16_t len)
+{
+	uint32_t reg_offset;
+	uint32_t count32b = (len + 3U) / 4U;
+	uint32_t i;
+
+	VERBOSE("read packet length %i to 0x%lx\n", len, (uintptr_t)dest);
+
+	reg_offset = (uintptr_t)handle + OTG_FIFO_BASE;
+
+	for (i = 0U; i < count32b; i++) {
+		*(uint32_t *)dest = mmio_read_32(reg_offset);
+		dest += 4U;
+		dsb();
+	}
+
+	return (void *)dest;
+}
+
+/*
+ * @brief  Setup and start a transfer over an EP.
+ * @param  handle: Selected device
+ * @param  ep: Pointer to endpoint structure.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_ep_start_xfer(void *handle, usbd_ep_t *ep)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t reg_offset;
+	uint32_t reg_value;
+	uint32_t clear_value;
+
+	if (ep->is_in) {
+		reg_offset = usb_base_addr + OTG_DIEP_BASE + (ep->num * OTG_DIEP_SIZE);
+		clear_value = OTG_DIEPTSIZ_PKTCNT | OTG_DIEPTSIZ_XFRSIZ;
+		if (ep->xfer_len == 0U) {
+			reg_value = OTG_DIEPTSIZ_PKTCNT_1;
+		} else {
+			/*
+			 * Program the transfer size and packet count
+			 * as follows:
+			 * xfersize = N * maxpacket + short_packet
+			 * pktcnt = N + (short_packet exist ? 1 : 0)
+			 */
+			reg_value = (OTG_DIEPTSIZ_PKTCNT &
+				     (((ep->xfer_len + ep->maxpacket - 1U) /
+				       ep->maxpacket) << OTG_DIEPTSIZ_PKTCNT_SHIFT))
+				    | ep->xfer_len;
+
+			if (ep->type == EP_TYPE_ISOC) {
+				clear_value |= OTG_DIEPTSIZ_MCNT_MASK;
+				reg_value |= OTG_DIEPTSIZ_MCNT_DATA0;
+			}
+		}
+
+		mmio_clrsetbits_32(reg_offset + OTG_DIEPTSIZ, clear_value, reg_value);
+
+		if ((ep->type != EP_TYPE_ISOC) && (ep->xfer_len > 0U)) {
+			/* Enable the TX FIFO empty interrupt for this EP */
+			mmio_setbits_32(usb_base_addr + OTG_DIEPEMPMSK, BIT(ep->num));
+		}
+
+		/* EP enable, IN data in FIFO */
+		reg_value = OTG_DIEPCTL_CNAK | OTG_DIEPCTL_EPENA;
+
+		if (ep->type == EP_TYPE_ISOC) {
+			if ((mmio_read_32(usb_base_addr + OTG_DSTS) & OTG_DSTS_FNSOF0) == 0U) {
+				reg_value |= OTG_DIEPCTL_SODDFRM;
+			} else {
+				reg_value |= OTG_DIEPCTL_SD0PID_SEVNFRM;
+			}
+		}
+
+		mmio_setbits_32(reg_offset + OTG_DIEPCTL, reg_value);
+
+		if (ep->type == EP_TYPE_ISOC) {
+			usb_dwc2_write_packet(handle, ep->xfer_buff, ep->num, ep->xfer_len);
+		}
+	} else {
+		reg_offset = usb_base_addr + OTG_DOEP_BASE + (ep->num * OTG_DOEP_SIZE);
+		/*
+		 * Program the transfer size and packet count as follows:
+		 * pktcnt = N
+		 * xfersize = N * maxpacket
+		 */
+		if (ep->xfer_len == 0U) {
+			reg_value = ep->maxpacket | OTG_DIEPTSIZ_PKTCNT_1;
+		} else {
+			uint16_t pktcnt = (ep->xfer_len + ep->maxpacket - 1U) / ep->maxpacket;
+
+			reg_value = (pktcnt << OTG_DIEPTSIZ_PKTCNT_SHIFT) |
+				    (ep->maxpacket * pktcnt);
+		}
+
+		mmio_clrsetbits_32(reg_offset + OTG_DOEPTSIZ,
+				   OTG_DOEPTSIZ_XFRSIZ & OTG_DOEPTSIZ_PKTCNT,
+				   reg_value);
+
+		/* EP enable */
+		reg_value = OTG_DOEPCTL_CNAK | OTG_DOEPCTL_EPENA;
+
+		if (ep->type == EP_TYPE_ISOC) {
+			if ((mmio_read_32(usb_base_addr + OTG_DSTS) & OTG_DSTS_FNSOF0) == 0U) {
+				reg_value |= OTG_DOEPCTL_SD1PID_SODDFRM;
+			} else {
+				reg_value |= OTG_DOEPCTL_SD0PID_SEVNFRM;
+			}
+		}
+
+		mmio_setbits_32(reg_offset + OTG_DOEPCTL, reg_value);
+	}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Setup and start a transfer over the EP0.
+ * @param  handle: Selected device.
+ * @param  ep: Pointer to endpoint structure.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_ep0_start_xfer(void *handle, usbd_ep_t *ep)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t reg_offset;
+	uint32_t reg_value;
+
+	if (ep->is_in) {
+		reg_offset = usb_base_addr + OTG_DIEP_BASE +
+			     (ep->num * OTG_DIEP_SIZE);
+
+		if (ep->xfer_len == 0U) {
+			reg_value = OTG_DIEPTSIZ_PKTCNT_1;
+		} else {
+			/*
+			 * Program the transfer size and packet count
+			 * as follows:
+			 * xfersize = N * maxpacket + short_packet
+			 * pktcnt = N + (short_packet exist ? 1 : 0)
+			 */
+
+			if (ep->xfer_len > ep->maxpacket) {
+				ep->xfer_len = ep->maxpacket;
+			}
+
+			reg_value = OTG_DIEPTSIZ_PKTCNT_1 | ep->xfer_len;
+		}
+
+		mmio_clrsetbits_32(reg_offset + OTG_DIEPTSIZ,
+				   OTG_DIEPTSIZ_XFRSIZ | OTG_DIEPTSIZ_PKTCNT,
+				   reg_value);
+
+		/* Enable the TX FIFO empty interrupt for this EP */
+		if (ep->xfer_len > 0U) {
+			mmio_setbits_32(usb_base_addr +	OTG_DIEPEMPMSK,
+					BIT(ep->num));
+		}
+
+		/* EP enable, IN data in FIFO */
+		mmio_setbits_32(reg_offset + OTG_DIEPCTL,
+				OTG_DIEPCTL_CNAK | OTG_DIEPCTL_EPENA);
+	} else {
+		reg_offset = usb_base_addr + OTG_DOEP_BASE +
+			     (ep->num * OTG_DOEP_SIZE);
+
+		/*
+		 * Program the transfer size and packet count as follows:
+		 * pktcnt = N
+		 * xfersize = N * maxpacket
+		 */
+		if (ep->xfer_len > 0U) {
+			ep->xfer_len = ep->maxpacket;
+		}
+
+		reg_value = OTG_DIEPTSIZ_PKTCNT_1 | ep->maxpacket;
+
+		mmio_clrsetbits_32(reg_offset + OTG_DIEPTSIZ,
+				   OTG_DIEPTSIZ_XFRSIZ | OTG_DIEPTSIZ_PKTCNT,
+				   reg_value);
+
+		/* EP enable */
+		mmio_setbits_32(reg_offset + OTG_DOEPCTL,
+				OTG_DOEPCTL_CNAK | OTG_DOEPCTL_EPENA);
+	}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Set a stall condition over an EP.
+ * @param  handle: Selected device.
+ * @param  ep: Pointer to endpoint structure.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_ep_set_stall(void *handle, usbd_ep_t *ep)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t reg_offset;
+	uint32_t reg_value;
+
+	if (ep->is_in) {
+		reg_offset = usb_base_addr + OTG_DIEP_BASE +
+			     (ep->num * OTG_DIEP_SIZE);
+		reg_value = mmio_read_32(reg_offset + OTG_DIEPCTL);
+
+		if ((reg_value & OTG_DIEPCTL_EPENA) == 0U) {
+			reg_value &= ~OTG_DIEPCTL_EPDIS;
+		}
+
+		reg_value |= OTG_DIEPCTL_STALL;
+
+		mmio_write_32(reg_offset + OTG_DIEPCTL, reg_value);
+	} else {
+		reg_offset = usb_base_addr + OTG_DOEP_BASE +
+			     (ep->num * OTG_DOEP_SIZE);
+		reg_value = mmio_read_32(reg_offset + OTG_DOEPCTL);
+
+		if ((reg_value & OTG_DOEPCTL_EPENA) == 0U) {
+			reg_value &= ~OTG_DOEPCTL_EPDIS;
+		}
+
+		reg_value |= OTG_DOEPCTL_STALL;
+
+		mmio_write_32(reg_offset + OTG_DOEPCTL, reg_value);
+	}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Stop the USB device mode.
+ * @param  handle: Selected device.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_stop_device(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t i;
+
+	/* Disable Int */
+	mmio_clrbits_32(usb_base_addr + OTG_GAHBCFG, OTG_GAHBCFG_GINT);
+
+	/* Clear pending interrupts */
+	for (i = 0U; i < EP_NB; i++) {
+		mmio_write_32(usb_base_addr + OTG_DIEP_BASE + (i * OTG_DIEP_SIZE) + OTG_DIEPINT,
+			      OTG_DIEPINT_MASK);
+		mmio_write_32(usb_base_addr + OTG_DOEP_BASE + (i * OTG_DOEP_SIZE) + OTG_DOEPINT,
+			      OTG_DOEPINT_MASK);
+	}
+
+	mmio_write_32(usb_base_addr + OTG_DAINT, OTG_DAINT_IN_MASK | OTG_DAINT_OUT_MASK);
+
+	/* Clear interrupt masks */
+	mmio_write_32(usb_base_addr + OTG_DIEPMSK, 0U);
+	mmio_write_32(usb_base_addr + OTG_DOEPMSK, 0U);
+	mmio_write_32(usb_base_addr + OTG_DAINTMSK, 0U);
+
+	/* Flush the FIFO */
+	usb_dwc2_flush_rx_fifo(handle);
+	usb_dwc2_flush_tx_fifo(handle, EP_ALL);
+
+	/* Disconnect the USB device by disabling the pull-up/pull-down. */
+	mmio_setbits_32((uintptr_t)handle + OTG_DCTL, OTG_DCTL_SDIS);
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Stop the USB device mode.
+ * @param  handle: Selected device.
+ * @param  address: New device address to be assigned.
+ *         This parameter can be a value from 0 to 255.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_set_address(void *handle, uint8_t address)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	mmio_clrsetbits_32(usb_base_addr + OTG_DCFG,
+			   OTG_DCFG_DAD,
+			   address << OTG_DCFG_DAD_SHIFT);
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Check FIFO for the next packet to be loaded.
+ * @param  handle: Selected device.
+ * @param  epnum : Endpoint number.
+ * @param  xfer_len: Block length.
+ * @param  xfer_count: Number of blocks.
+ * @param  maxpacket: Max packet length.
+ * @param  xfer_buff: Buffer pointer.
+ * @retval USB status.
+ */
+static usb_status_t usb_dwc2_write_empty_tx_fifo(void *handle,
+						 uint32_t epnum,
+						 uint32_t xfer_len,
+						 uint32_t *xfer_count,
+						 uint32_t maxpacket,
+						 uint8_t **xfer_buff)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t reg_offset;
+	int32_t len;
+	uint32_t len32b;
+	usb_status_t ret;
+
+	len = xfer_len - *xfer_count;
+
+	if ((len > 0) && ((uint32_t)len > maxpacket)) {
+		len = maxpacket;
+	}
+
+	len32b = (len + 3U) / 4U;
+
+	reg_offset = usb_base_addr + OTG_DIEP_BASE + (epnum * OTG_DIEP_SIZE);
+
+	while (((mmio_read_32(reg_offset + OTG_DTXFSTS) &
+		OTG_DTXFSTS_INEPTFSAV) > len32b) &&
+	       (*xfer_count < xfer_len) && (xfer_len != 0U)) {
+		/* Write the FIFO */
+		len = xfer_len - *xfer_count;
+
+		if ((len > 0) && ((uint32_t)len > maxpacket)) {
+			len = maxpacket;
+		}
+
+		len32b = (len + 3U) / 4U;
+
+		ret = usb_dwc2_write_packet(handle, *xfer_buff, epnum, len);
+		if (ret != USBD_OK) {
+			return ret;
+		}
+
+		*xfer_buff  += len;
+		*xfer_count += len;
+	}
+
+	if (len <= 0) {
+		mmio_clrbits_32(usb_base_addr + OTG_DIEPEMPMSK, BIT(epnum));
+	}
+
+	return USBD_OK;
+}
+
+/*
+ * @brief  Handle PCD interrupt request.
+ * @param  handle: PCD handle.
+ * @param  param: Pointer to information updated by the IT handling.
+ * @retval Action to do after IT handling.
+ */
+static usb_action_t usb_dwc2_it_handler(void *handle, uint32_t *param)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+	uint32_t ep_intr;
+	uint32_t epint;
+	uint32_t epnum;
+	uint32_t temp;
+	usb_status_t ret;
+
+	if (usb_dwc2_get_mode(handle) != USB_OTG_MODE_DEVICE) {
+		return USB_NOTHING;
+	}
+
+	/* Avoid spurious interrupt */
+	if (usb_dwc2_read_int(handle) == 0U) {
+		return USB_NOTHING;
+	}
+
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_MMIS) != 0U) {
+		/* Incorrect mode, acknowledge the interrupt */
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_MMIS);
+	}
+
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_OEPINT) != 0U) {
+		uint32_t reg_offset;
+
+		/* Read in the device interrupt bits */
+		ep_intr = usb_dwc2_all_out_ep_int(handle);
+		epnum = 0U;
+		while ((ep_intr & BIT(0)) != BIT(0)) {
+			epnum++;
+			ep_intr >>= 1;
+		}
+
+		reg_offset = usb_base_addr + OTG_DOEP_BASE + (epnum * OTG_DOEP_SIZE) + OTG_DOEPINT;
+
+		epint = usb_dwc2_out_ep_int(handle, epnum);
+
+		if ((epint & OTG_DOEPINT_XFRC) == OTG_DOEPINT_XFRC) {
+			mmio_write_32(reg_offset, OTG_DOEPINT_XFRC);
+			*param = epnum;
+
+			return USB_DATA_OUT;
+		}
+
+		if ((epint & OTG_DOEPINT_STUP) == OTG_DOEPINT_STUP) {
+			/* Inform  that a setup packet is available */
+			mmio_write_32(reg_offset, OTG_DOEPINT_STUP);
+
+			return USB_SETUP;
+		}
+
+		if ((epint & OTG_DOEPINT_OTEPDIS) == OTG_DOEPINT_OTEPDIS) {
+			mmio_write_32(reg_offset, OTG_DOEPINT_OTEPDIS);
+		}
+	}
+
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_IEPINT) != 0U) {
+		uint32_t reg_offset;
+
+		/* Read in the device interrupt bits */
+		ep_intr = usb_dwc2_all_in_ep_int(handle);
+		epnum = 0U;
+		while ((ep_intr & BIT(0)) != BIT(0)) {
+			epnum++;
+			ep_intr >>= 1;
+		}
+
+		reg_offset = usb_base_addr + OTG_DIEP_BASE + (epnum * OTG_DIEP_SIZE) + OTG_DIEPINT;
+
+		epint = usb_dwc2_in_ep_int(handle, epnum);
+
+		if ((epint & OTG_DIEPINT_XFRC) == OTG_DIEPINT_XFRC) {
+			mmio_clrbits_32(usb_base_addr + OTG_DIEPEMPMSK, BIT(epnum));
+			mmio_write_32(reg_offset, OTG_DIEPINT_XFRC);
+			*param = epnum;
+
+			return USB_DATA_IN;
+		}
+
+		if ((epint & OTG_DIEPINT_TOC) == OTG_DIEPINT_TOC) {
+			mmio_write_32(reg_offset, OTG_DIEPINT_TOC);
+		}
+
+		if ((epint & OTG_DIEPINT_ITTXFE) == OTG_DIEPINT_ITTXFE) {
+			mmio_write_32(reg_offset, OTG_DIEPINT_ITTXFE);
+		}
+
+		if ((epint & OTG_DIEPINT_INEPNE) == OTG_DIEPINT_INEPNE) {
+			mmio_write_32(reg_offset, OTG_DIEPINT_INEPNE);
+		}
+
+		if ((epint & OTG_DIEPINT_EPDISD) == OTG_DIEPINT_EPDISD) {
+			mmio_write_32(reg_offset, OTG_DIEPINT_EPDISD);
+		}
+
+		if ((epint & OTG_DIEPINT_TXFE) == OTG_DIEPINT_TXFE) {
+			*param = epnum;
+
+			return USB_WRITE_EMPTY;
+		}
+	}
+
+	/* Handle resume interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_WKUPINT) != 0U) {
+		INFO("handle USB : Resume\n");
+
+		/* Clear the remote wake-up signaling */
+		mmio_clrbits_32(usb_base_addr + OTG_DCTL, OTG_DCTL_RWUSIG);
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_WKUPINT);
+
+		return USB_RESUME;
+	}
+
+	/* Handle suspend interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_USBSUSP) != 0U) {
+		INFO("handle USB : Suspend int\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_USBSUSP);
+
+		if ((mmio_read_32(usb_base_addr + OTG_DSTS) &
+		     OTG_DSTS_SUSPSTS) == OTG_DSTS_SUSPSTS) {
+			return USB_SUSPEND;
+		}
+	}
+
+	/* Handle LPM interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_LPMINT) != 0U) {
+		INFO("handle USB : LPM int enter in suspend\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_LPMINT);
+		*param = (mmio_read_32(usb_base_addr + OTG_GLPMCFG) &
+			  OTG_GLPMCFG_BESL) >> 2;
+
+		return USB_LPM;
+	}
+
+	/* Handle reset interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_USBRST) != 0U) {
+		INFO("handle USB : Reset\n");
+
+		mmio_clrbits_32(usb_base_addr + OTG_DCTL, OTG_DCTL_RWUSIG);
+
+		usb_dwc2_flush_tx_fifo(handle, 0U);
+
+		mmio_write_32(usb_base_addr + OTG_DAINT, OTG_DAINT_IN_MASK | OTG_DAINT_OUT_MASK);
+		mmio_setbits_32(usb_base_addr + OTG_DAINTMSK, OTG_DAINT_EP0_IN | OTG_DAINT_EP0_OUT);
+
+		mmio_setbits_32(usb_base_addr + OTG_DOEPMSK, OTG_DOEPMSK_STUPM |
+							     OTG_DOEPMSK_XFRCM |
+							     OTG_DOEPMSK_EPDM);
+		mmio_setbits_32(usb_base_addr + OTG_DIEPMSK, OTG_DIEPMSK_TOM |
+							     OTG_DIEPMSK_XFRCM |
+							     OTG_DIEPMSK_EPDM);
+
+		/* Set default address to 0 */
+		mmio_clrbits_32(usb_base_addr + OTG_DCFG, OTG_DCFG_DAD);
+
+		/* Setup EP0 to receive SETUP packets */
+		ret = usb_dwc2_ep0_out_start(handle);
+		if (ret != USBD_OK) {
+			return ret;
+		}
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_USBRST);
+
+		return USB_RESET;
+	}
+
+	/* Handle enumeration done interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_ENUMDNE) != 0U) {
+		ret = usb_dwc2_activate_setup(handle);
+		if (ret != USBD_OK) {
+			return ret;
+		}
+
+		mmio_clrbits_32(usb_base_addr + OTG_GUSBCFG, OTG_GUSBCFG_TRDT);
+
+		mmio_setbits_32(usb_base_addr + OTG_GUSBCFG,
+				(USBD_HS_TRDT_VALUE << OTG_GUSBCFG_TRDT_SHIFT) & OTG_GUSBCFG_TRDT);
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_ENUMDNE);
+
+		return USB_ENUM_DONE;
+	}
+
+	/* Handle RXQLevel interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_RXFLVL) != 0U) {
+		mmio_clrbits_32(usb_base_addr + OTG_GINTMSK,
+				OTG_GINTSTS_RXFLVL);
+
+		temp = mmio_read_32(usb_base_addr + OTG_GRXSTSP);
+
+		*param = temp & OTG_GRXSTSP_EPNUM;
+		*param |= (temp & OTG_GRXSTSP_BCNT) << (USBD_OUT_COUNT_SHIFT -
+							OTG_GRXSTSP_BCNT_SHIFT);
+
+		if (((temp & OTG_GRXSTSP_PKTSTS) >> OTG_GRXSTSP_PKTSTS_SHIFT) == STS_DATA_UPDT) {
+			if ((temp & OTG_GRXSTSP_BCNT) != 0U) {
+				mmio_setbits_32(usb_base_addr + OTG_GINTMSK, OTG_GINTSTS_RXFLVL);
+
+				return USB_READ_DATA_PACKET;
+			}
+		} else if (((temp & OTG_GRXSTSP_PKTSTS) >> OTG_GRXSTSP_PKTSTS_SHIFT) ==
+			    STS_SETUP_UPDT) {
+			mmio_setbits_32(usb_base_addr + OTG_GINTMSK, OTG_GINTSTS_RXFLVL);
+
+			return USB_READ_SETUP_PACKET;
+		}
+
+		mmio_setbits_32(usb_base_addr + OTG_GINTMSK, OTG_GINTSTS_RXFLVL);
+	}
+
+	/* Handle SOF interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_SOF) != 0U) {
+		INFO("handle USB : SOF\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_SOF);
+
+		return USB_SOF;
+	}
+
+	/* Handle incomplete ISO IN interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_IISOIXFR) != 0U) {
+		INFO("handle USB : ISO IN\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS,
+			      OTG_GINTSTS_IISOIXFR);
+	}
+
+	/* Handle incomplete ISO OUT interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_IPXFR_INCOMPISOOUT) !=
+	    0U) {
+		INFO("handle USB : ISO OUT\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS,
+			      OTG_GINTSTS_IPXFR_INCOMPISOOUT);
+	}
+
+	/* Handle connection event interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_SRQINT) != 0U) {
+		INFO("handle USB : Connect\n");
+
+		mmio_write_32(usb_base_addr + OTG_GINTSTS, OTG_GINTSTS_SRQINT);
+	}
+
+	/* Handle disconnection event interrupt */
+	if ((usb_dwc2_read_int(handle) & OTG_GINTSTS_OTGINT) != 0U) {
+		INFO("handle USB : Disconnect\n");
+
+		temp = mmio_read_32(usb_base_addr + OTG_GOTGINT);
+
+		if ((temp & OTG_GOTGINT_SEDET) == OTG_GOTGINT_SEDET) {
+			return USB_DISCONNECT;
+		}
+	}
+
+	return USB_NOTHING;
+}
+
+/*
+ * @brief  Start the usb device mode
+ * @param  usb_core_handle: USB core driver handle.
+ * @retval None.
+ * return  USB status.
+ */
+static usb_status_t usb_dwc2_start_device(void *handle)
+{
+	uintptr_t usb_base_addr = (uintptr_t)handle;
+
+	mmio_clrbits_32(usb_base_addr + OTG_DCTL, OTG_DCTL_SDIS);
+	mmio_setbits_32(usb_base_addr + OTG_GAHBCFG, OTG_GAHBCFG_GINT);
+
+	return USBD_OK;
+}
+
+static const usb_driver_t usb_dwc2driver = {
+	.ep0_out_start = usb_dwc2_ep0_out_start,
+	.ep_start_xfer = usb_dwc2_ep_start_xfer,
+	.ep0_start_xfer = usb_dwc2_ep0_start_xfer,
+	.write_packet = usb_dwc2_write_packet,
+	.read_packet = usb_dwc2_read_packet,
+	.ep_set_stall = usb_dwc2_ep_set_stall,
+	.start_device = usb_dwc2_start_device,
+	.stop_device = usb_dwc2_stop_device,
+	.set_address = usb_dwc2_set_address,
+	.write_empty_tx_fifo = usb_dwc2_write_empty_tx_fifo,
+	.it_handler = usb_dwc2_it_handler
+};
+
+/*
+ * @brief  Initialize USB DWC2 driver.
+ * @param  usb_core_handle: USB core driver handle.
+ * @param  pcd_handle: PCD handle.
+ * @param  base_register: USB global register base address.
+ * @retval None.
+ */
+void usb_dwc2_init_driver(usb_handle_t *usb_core_handle,
+			  pcd_handle_t *pcd_handle,
+			  void *base_register)
+{
+	register_usb_driver(usb_core_handle, pcd_handle, &usb_dwc2driver,
+			    base_register);
+}

include/drivers/st/usb_dwc2.h

+/*
+ * Copyright (c) 2015-2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef USB_DWC2_H
+#define USB_DWC2_H
+
+#include <lib/usb/usb_core.h>
+
+#define USB_MAX_ENDPOINT_NB			0x10
+
+void usb_dwc2_init_driver(usb_handle_t *usb_core_handle,
+			  pcd_handle_t *pcd_handle,
+			  void *base_register);
+
+#endif /* USB_DWC2_H */
+

plat/st/stm32mp1/stm32mp1_def.h

@@ -483,6 +483,11 @@ static inline uint32_t tamp_bkpr(uint32_t idx)
 }
 #endif
 
+/*******************************************************************************
+ * STM32MP1 USB
+ ******************************************************************************/
+#define USB_OTG_BASE			U(0x49000000)
+
 /*******************************************************************************
  * STM32MP1 DDRCTRL
  ******************************************************************************/