diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 4cd0231..1c4264f 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -49,6 +49,7 @@ config MACH_MX28EVK
 	select MXS_HAVE_PLATFORM_MXS_MMC
 	select MXS_HAVE_PLATFORM_MXSFB
 	select MXS_OCOTP
+	select USB_ARCH_HAS_EHCI
 	help
 	  Include support for MX28EVK platform. This includes specific
 	  configurations for the board and its peripherals.
diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
index 6c38262..48fc2f5 100644
--- a/arch/arm/mach-mxs/Makefile
+++ b/arch/arm/mach-mxs/Makefile
@@ -12,5 +12,6 @@ obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
 obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
 obj-$(CONFIG_MODULE_TX28) += module-tx28.o
 obj-$(CONFIG_MACH_TX28)    += mach-tx28.o
+obj-$(CONFIG_USB_EHCI_MXC)   += usb_h1.o
 
 obj-y += devices/
diff --git a/arch/arm/mach-mxs/regs-usbphy-mx28.h b/arch/arm/mach-mxs/regs-usbphy-mx28.h
new file mode 100644
index 0000000..a367927
--- /dev/null
+++ b/arch/arm/mach-mxs/regs-usbphy-mx28.h
@@ -0,0 +1,323 @@
+/*
+ * Freescale USBPHY Register Definitions
+ *
+ * Copyright 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * This file is created by xml file. Don't Edit it.
+ *
+ * Xml Revision: 1.52
+ * Template revision: 26195
+ */
+
+#ifndef __ARCH_ARM___USBPHY_H
+#define __ARCH_ARM___USBPHY_H
+
+
+#define HW_USBPHY_PWD	(0x00000000)
+#define HW_USBPHY_PWD_SET	(0x00000004)
+#define HW_USBPHY_PWD_CLR	(0x00000008)
+#define HW_USBPHY_PWD_TOG	(0x0000000c)
+
+#define BP_USBPHY_PWD_RSVD2	21
+#define BM_USBPHY_PWD_RSVD2	0xFFE00000
+#define BF_USBPHY_PWD_RSVD2(v) \
+		(((v) << 21) & BM_USBPHY_PWD_RSVD2)
+#define BM_USBPHY_PWD_RXPWDRX	0x00100000
+#define BM_USBPHY_PWD_RXPWDDIFF	0x00080000
+#define BM_USBPHY_PWD_RXPWD1PT1	0x00040000
+#define BM_USBPHY_PWD_RXPWDENV	0x00020000
+#define BP_USBPHY_PWD_RSVD1	13
+#define BM_USBPHY_PWD_RSVD1	0x0001E000
+#define BF_USBPHY_PWD_RSVD1(v)  \
+		(((v) << 13) & BM_USBPHY_PWD_RSVD1)
+#define BM_USBPHY_PWD_TXPWDV2I	0x00001000
+#define BM_USBPHY_PWD_TXPWDIBIAS	0x00000800
+#define BM_USBPHY_PWD_TXPWDFS	0x00000400
+#define BP_USBPHY_PWD_RSVD0	0
+#define BM_USBPHY_PWD_RSVD0	0x000003FF
+#define BF_USBPHY_PWD_RSVD0(v)  \
+		(((v) << 0) & BM_USBPHY_PWD_RSVD0)
+
+#define HW_USBPHY_TX	(0x00000010)
+#define HW_USBPHY_TX_SET	(0x00000014)
+#define HW_USBPHY_TX_CLR	(0x00000018)
+#define HW_USBPHY_TX_TOG	(0x0000001c)
+
+#define BP_USBPHY_TX_RSVD5	29
+#define BM_USBPHY_TX_RSVD5	0xE0000000
+#define BF_USBPHY_TX_RSVD5(v) \
+		(((v) << 29) & BM_USBPHY_TX_RSVD5)
+#define BP_USBPHY_TX_USBPHY_TX_EDGECTRL	26
+#define BM_USBPHY_TX_USBPHY_TX_EDGECTRL	0x1C000000
+#define BF_USBPHY_TX_USBPHY_TX_EDGECTRL(v)  \
+		(((v) << 26) & BM_USBPHY_TX_USBPHY_TX_EDGECTRL)
+#define BM_USBPHY_TX_USBPHY_TX_SYNC_INVERT	0x02000000
+#define BM_USBPHY_TX_USBPHY_TX_SYNC_MUX	0x01000000
+#define BP_USBPHY_TX_RSVD4	22
+#define BM_USBPHY_TX_RSVD4	0x00C00000
+#define BF_USBPHY_TX_RSVD4(v)  \
+		(((v) << 22) & BM_USBPHY_TX_RSVD4)
+#define BM_USBPHY_TX_TXENCAL45DP	0x00200000
+#define BM_USBPHY_TX_RSVD3	0x00100000
+#define BP_USBPHY_TX_TXCAL45DP	16
+#define BM_USBPHY_TX_TXCAL45DP	0x000F0000
+#define BF_USBPHY_TX_TXCAL45DP(v)  \
+		(((v) << 16) & BM_USBPHY_TX_TXCAL45DP)
+#define BP_USBPHY_TX_RSVD2	14
+#define BM_USBPHY_TX_RSVD2	0x0000C000
+#define BF_USBPHY_TX_RSVD2(v)  \
+		(((v) << 14) & BM_USBPHY_TX_RSVD2)
+#define BM_USBPHY_TX_TXENCAL45DN	0x00002000
+#define BM_USBPHY_TX_RSVD1	0x00001000
+#define BP_USBPHY_TX_TXCAL45DN	8
+#define BM_USBPHY_TX_TXCAL45DN	0x00000F00
+#define BF_USBPHY_TX_TXCAL45DN(v)  \
+		(((v) << 8) & BM_USBPHY_TX_TXCAL45DN)
+#define BP_USBPHY_TX_RSVD0	4
+#define BM_USBPHY_TX_RSVD0	0x000000F0
+#define BF_USBPHY_TX_RSVD0(v)  \
+		(((v) << 4) & BM_USBPHY_TX_RSVD0)
+#define BP_USBPHY_TX_D_CAL	0
+#define BM_USBPHY_TX_D_CAL	0x0000000F
+#define BF_USBPHY_TX_D_CAL(v)  \
+		(((v) << 0) & BM_USBPHY_TX_D_CAL)
+
+#define HW_USBPHY_RX	(0x00000020)
+#define HW_USBPHY_RX_SET	(0x00000024)
+#define HW_USBPHY_RX_CLR	(0x00000028)
+#define HW_USBPHY_RX_TOG	(0x0000002c)
+
+#define BP_USBPHY_RX_RSVD2	23
+#define BM_USBPHY_RX_RSVD2	0xFF800000
+#define BF_USBPHY_RX_RSVD2(v) \
+		(((v) << 23) & BM_USBPHY_RX_RSVD2)
+#define BM_USBPHY_RX_RXDBYPASS	0x00400000
+#define BP_USBPHY_RX_RSVD1	7
+#define BM_USBPHY_RX_RSVD1	0x003FFF80
+#define BF_USBPHY_RX_RSVD1(v)  \
+		(((v) << 7) & BM_USBPHY_RX_RSVD1)
+#define BP_USBPHY_RX_DISCONADJ	4
+#define BM_USBPHY_RX_DISCONADJ	0x00000070
+#define BF_USBPHY_RX_DISCONADJ(v)  \
+		(((v) << 4) & BM_USBPHY_RX_DISCONADJ)
+#define BM_USBPHY_RX_RSVD0	0x00000008
+#define BP_USBPHY_RX_ENVADJ	0
+#define BM_USBPHY_RX_ENVADJ	0x00000007
+#define BF_USBPHY_RX_ENVADJ(v)  \
+		(((v) << 0) & BM_USBPHY_RX_ENVADJ)
+
+#define HW_USBPHY_CTRL	(0x00000030)
+#define HW_USBPHY_CTRL_SET	(0x00000034)
+#define HW_USBPHY_CTRL_CLR	(0x00000038)
+#define HW_USBPHY_CTRL_TOG	(0x0000003c)
+
+#define BM_USBPHY_CTRL_SFTRST	0x80000000
+#define BM_USBPHY_CTRL_CLKGATE	0x40000000
+#define BM_USBPHY_CTRL_UTMI_SUSPENDM	0x20000000
+#define BM_USBPHY_CTRL_HOST_FORCE_LS_SE0	0x10000000
+#define BM_USBPHY_CTRL_RSVD3	0x08000000
+#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS	0x04000000
+#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE	0x02000000
+#define BM_USBPHY_CTRL_FSDLL_RST_EN	0x01000000
+#define BM_USBPHY_CTRL_ENVBUSCHG_WKUP	0x00800000
+#define BM_USBPHY_CTRL_ENIDCHG_WKUP	0x00400000
+#define BM_USBPHY_CTRL_ENDPDMCHG_WKUP	0x00200000
+#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD	0x00100000
+#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE	0x00080000
+#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL	0x00040000
+#define BM_USBPHY_CTRL_WAKEUP_IRQ	0x00020000
+#define BM_USBPHY_CTRL_ENIRQWAKEUP	0x00010000
+#define BM_USBPHY_CTRL_ENUTMILEVEL3	0x00008000
+#define BM_USBPHY_CTRL_ENUTMILEVEL2	0x00004000
+#define BM_USBPHY_CTRL_DATA_ON_LRADC	0x00002000
+#define BM_USBPHY_CTRL_DEVPLUGIN_IRQ	0x00001000
+#define BM_USBPHY_CTRL_ENIRQDEVPLUGIN	0x00000800
+#define BM_USBPHY_CTRL_RESUME_IRQ	0x00000400
+#define BM_USBPHY_CTRL_ENIRQRESUMEDETECT	0x00000200
+#define BM_USBPHY_CTRL_RESUMEIRQSTICKY	0x00000100
+#define BM_USBPHY_CTRL_ENOTGIDDETECT	0x00000080
+#define BM_USBPHY_CTRL_RSVD1	0x00000040
+#define BM_USBPHY_CTRL_DEVPLUGIN_POLARITY	0x00000020
+#define BM_USBPHY_CTRL_ENDEVPLUGINDETECT	0x00000010
+#define BM_USBPHY_CTRL_HOSTDISCONDETECT_IRQ	0x00000008
+#define BM_USBPHY_CTRL_ENIRQHOSTDISCON	0x00000004
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	0x00000002
+#define BM_USBPHY_CTRL_RSVD0	0x00000001
+
+#define HW_USBPHY_STATUS	(0x00000040)
+
+#define BP_USBPHY_STATUS_RSVD4	11
+#define BM_USBPHY_STATUS_RSVD4	0xFFFFF800
+#define BF_USBPHY_STATUS_RSVD4(v) \
+		(((v) << 11) & BM_USBPHY_STATUS_RSVD4)
+#define BM_USBPHY_STATUS_RESUME_STATUS	0x00000400
+#define BM_USBPHY_STATUS_RSVD3	0x00000200
+#define BM_USBPHY_STATUS_OTGID_STATUS	0x00000100
+#define BM_USBPHY_STATUS_RSVD2	0x00000080
+#define BM_USBPHY_STATUS_DEVPLUGIN_STATUS	0x00000040
+#define BP_USBPHY_STATUS_RSVD1	4
+#define BM_USBPHY_STATUS_RSVD1	0x00000030
+#define BF_USBPHY_STATUS_RSVD1(v)  \
+		(((v) << 4) & BM_USBPHY_STATUS_RSVD1)
+#define BM_USBPHY_STATUS_HOSTDISCONDETECT_STATUS	0x00000008
+#define BP_USBPHY_STATUS_RSVD0	0
+#define BM_USBPHY_STATUS_RSVD0	0x00000007
+#define BF_USBPHY_STATUS_RSVD0(v)  \
+		(((v) << 0) & BM_USBPHY_STATUS_RSVD0)
+
+#define HW_USBPHY_DEBUG	(0x00000050)
+#define HW_USBPHY_DEBUG_SET	(0x00000054)
+#define HW_USBPHY_DEBUG_CLR	(0x00000058)
+#define HW_USBPHY_DEBUG_TOG	(0x0000005c)
+
+#define BM_USBPHY_DEBUG_RSVD3	0x80000000
+#define BM_USBPHY_DEBUG_CLKGATE	0x40000000
+#define BM_USBPHY_DEBUG_HOST_RESUME_DEBUG	0x20000000
+#define BP_USBPHY_DEBUG_SQUELCHRESETLENGTH	25
+#define BM_USBPHY_DEBUG_SQUELCHRESETLENGTH	0x1E000000
+#define BF_USBPHY_DEBUG_SQUELCHRESETLENGTH(v)  \
+		(((v) << 25) & BM_USBPHY_DEBUG_SQUELCHRESETLENGTH)
+#define BM_USBPHY_DEBUG_ENSQUELCHRESET	0x01000000
+#define BP_USBPHY_DEBUG_RSVD2	21
+#define BM_USBPHY_DEBUG_RSVD2	0x00E00000
+#define BF_USBPHY_DEBUG_RSVD2(v)  \
+		(((v) << 21) & BM_USBPHY_DEBUG_RSVD2)
+#define BP_USBPHY_DEBUG_SQUELCHRESETCOUNT	16
+#define BM_USBPHY_DEBUG_SQUELCHRESETCOUNT	0x001F0000
+#define BF_USBPHY_DEBUG_SQUELCHRESETCOUNT(v)  \
+		(((v) << 16) & BM_USBPHY_DEBUG_SQUELCHRESETCOUNT)
+#define BP_USBPHY_DEBUG_RSVD1	13
+#define BM_USBPHY_DEBUG_RSVD1	0x0000E000
+#define BF_USBPHY_DEBUG_RSVD1(v)  \
+		(((v) << 13) & BM_USBPHY_DEBUG_RSVD1)
+#define BM_USBPHY_DEBUG_ENTX2RXCOUNT	0x00001000
+#define BP_USBPHY_DEBUG_TX2RXCOUNT	8
+#define BM_USBPHY_DEBUG_TX2RXCOUNT	0x00000F00
+#define BF_USBPHY_DEBUG_TX2RXCOUNT(v)  \
+		(((v) << 8) & BM_USBPHY_DEBUG_TX2RXCOUNT)
+#define BP_USBPHY_DEBUG_RSVD0	6
+#define BM_USBPHY_DEBUG_RSVD0	0x000000C0
+#define BF_USBPHY_DEBUG_RSVD0(v)  \
+		(((v) << 6) & BM_USBPHY_DEBUG_RSVD0)
+#define BP_USBPHY_DEBUG_ENHSTPULLDOWN	4
+#define BM_USBPHY_DEBUG_ENHSTPULLDOWN	0x00000030
+#define BF_USBPHY_DEBUG_ENHSTPULLDOWN(v)  \
+		(((v) << 4) & BM_USBPHY_DEBUG_ENHSTPULLDOWN)
+#define BP_USBPHY_DEBUG_HSTPULLDOWN	2
+#define BM_USBPHY_DEBUG_HSTPULLDOWN	0x0000000C
+#define BF_USBPHY_DEBUG_HSTPULLDOWN(v)  \
+		(((v) << 2) & BM_USBPHY_DEBUG_HSTPULLDOWN)
+#define BM_USBPHY_DEBUG_DEBUG_INTERFACE_HOLD	0x00000002
+#define BM_USBPHY_DEBUG_OTGIDPIOLOCK	0x00000001
+
+#define HW_USBPHY_DEBUG0_STATUS	(0x00000060)
+
+#define BP_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT	26
+#define BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT	0xFC000000
+#define BF_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT(v) \
+		(((v) << 26) & BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT)
+#define BP_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT	16
+#define BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT	0x03FF0000
+#define BF_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT(v)  \
+		(((v) << 16) & BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT)
+#define BP_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT	0
+#define BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT	0x0000FFFF
+#define BF_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT(v)  \
+		(((v) << 0) & BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT)
+
+#define HW_USBPHY_DEBUG1	(0x00000070)
+#define HW_USBPHY_DEBUG1_SET	(0x00000074)
+#define HW_USBPHY_DEBUG1_CLR	(0x00000078)
+#define HW_USBPHY_DEBUG1_TOG	(0x0000007c)
+
+#define BP_USBPHY_DEBUG1_RSVD1	15
+#define BM_USBPHY_DEBUG1_RSVD1	0xFFFF8000
+#define BF_USBPHY_DEBUG1_RSVD1(v) \
+		(((v) << 15) & BM_USBPHY_DEBUG1_RSVD1)
+#define BP_USBPHY_DEBUG1_ENTAILADJVD	13
+#define BM_USBPHY_DEBUG1_ENTAILADJVD	0x00006000
+#define BF_USBPHY_DEBUG1_ENTAILADJVD(v)  \
+		(((v) << 13) & BM_USBPHY_DEBUG1_ENTAILADJVD)
+#define BM_USBPHY_DEBUG1_ENTX2TX	0x00001000
+#define BP_USBPHY_DEBUG1_RSVD0	4
+#define BM_USBPHY_DEBUG1_RSVD0	0x00000FF0
+#define BF_USBPHY_DEBUG1_RSVD0(v)  \
+		(((v) << 4) & BM_USBPHY_DEBUG1_RSVD0)
+#define BP_USBPHY_DEBUG1_DBG_ADDRESS	0
+#define BM_USBPHY_DEBUG1_DBG_ADDRESS	0x0000000F
+#define BF_USBPHY_DEBUG1_DBG_ADDRESS(v)  \
+		(((v) << 0) & BM_USBPHY_DEBUG1_DBG_ADDRESS)
+
+#define HW_USBPHY_VERSION	(0x00000080)
+
+#define BP_USBPHY_VERSION_MAJOR	24
+#define BM_USBPHY_VERSION_MAJOR	0xFF000000
+#define BF_USBPHY_VERSION_MAJOR(v) \
+		(((v) << 24) & BM_USBPHY_VERSION_MAJOR)
+#define BP_USBPHY_VERSION_MINOR	16
+#define BM_USBPHY_VERSION_MINOR	0x00FF0000
+#define BF_USBPHY_VERSION_MINOR(v)  \
+		(((v) << 16) & BM_USBPHY_VERSION_MINOR)
+#define BP_USBPHY_VERSION_STEP	0
+#define BM_USBPHY_VERSION_STEP	0x0000FFFF
+#define BF_USBPHY_VERSION_STEP(v)  \
+		(((v) << 0) & BM_USBPHY_VERSION_STEP)
+
+#define HW_USBPHY_IP	(0x00000090)
+#define HW_USBPHY_IP_SET	(0x00000094)
+#define HW_USBPHY_IP_CLR	(0x00000098)
+#define HW_USBPHY_IP_TOG	(0x0000009c)
+
+#define BP_USBPHY_IP_RSVD1	25
+#define BM_USBPHY_IP_RSVD1	0xFE000000
+#define BF_USBPHY_IP_RSVD1(v) \
+		(((v) << 25) & BM_USBPHY_IP_RSVD1)
+#define BP_USBPHY_IP_DIV_SEL	23
+#define BM_USBPHY_IP_DIV_SEL	0x01800000
+#define BF_USBPHY_IP_DIV_SEL(v)  \
+		(((v) << 23) & BM_USBPHY_IP_DIV_SEL)
+#define BV_USBPHY_IP_DIV_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_DIV_SEL__LOWER     0x1
+#define BV_USBPHY_IP_DIV_SEL__LOWEST    0x2
+#define BV_USBPHY_IP_DIV_SEL__UNDEFINED 0x3
+#define BP_USBPHY_IP_LFR_SEL	21
+#define BM_USBPHY_IP_LFR_SEL	0x00600000
+#define BF_USBPHY_IP_LFR_SEL(v)  \
+		(((v) << 21) & BM_USBPHY_IP_LFR_SEL)
+#define BV_USBPHY_IP_LFR_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_LFR_SEL__TIMES_2   0x1
+#define BV_USBPHY_IP_LFR_SEL__TIMES_05  0x2
+#define BV_USBPHY_IP_LFR_SEL__UNDEFINED 0x3
+#define BP_USBPHY_IP_CP_SEL	19
+#define BM_USBPHY_IP_CP_SEL	0x00180000
+#define BF_USBPHY_IP_CP_SEL(v)  \
+		(((v) << 19) & BM_USBPHY_IP_CP_SEL)
+#define BV_USBPHY_IP_CP_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_CP_SEL__TIMES_2   0x1
+#define BV_USBPHY_IP_CP_SEL__TIMES_05  0x2
+#define BV_USBPHY_IP_CP_SEL__UNDEFINED 0x3
+#define BM_USBPHY_IP_TSTI_TX_DP	0x00040000
+#define BM_USBPHY_IP_TSTI_TX_DM	0x00020000
+#define BM_USBPHY_IP_ANALOG_TESTMODE	0x00010000
+#define BP_USBPHY_IP_RSVD0	3
+#define BM_USBPHY_IP_RSVD0	0x0000FFF8
+#define BF_USBPHY_IP_RSVD0(v)  \
+		(((v) << 3) & BM_USBPHY_IP_RSVD0)
+#define BM_USBPHY_IP_EN_USB_CLKS	0x00000004
+#define BM_USBPHY_IP_PLL_LOCKED	0x00000002
+#define BM_USBPHY_IP_PLL_POWER	0x00000001
+#endif /* __ARCH_ARM___USBPHY_H */
diff --git a/arch/arm/mach-mxs/usb_h1.c b/arch/arm/mach-mxs/usb_h1.c
new file mode 100644
index 0000000..9ca5236
--- /dev/null
+++ b/arch/arm/mach-mxs/usb_h1.c
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/fsl_devices.h>
+#include <linux/gpio.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/irqs.h>
+#include <mach/mx28.h>
+#include "regs-usbphy-mx28.h"
+
+/* EHCI registers: */
+#define UOG_USBCMD		(0x140)/* USB command register */
+#define UOG_PORTSC1		(0x184)/* port status and control */
+/* x_PORTSCx */
+#define PORTSC_PTS_MASK		(3 << 30)/* parallel xcvr mask */
+#define PORTSC_PTS_UTMI		(0 << 30)/* UTMI/UTMI+ */
+#define PORTSC_PTW		(1 << 28)/* UTMI width */
+/* USBCMD */
+#define UCMD_RUN_STOP           (1 << 0)/* controller run/stop */
+#define UCMD_RESET		(1 << 1)/* controller reset */
+
+#define HOSTPHY_CONNECT_STATE	(1 << 3)
+
+static struct clk *usb_clk;
+static struct clk *usb_phy_clk;
+static int internal_phy_clk_already_on;
+
+/* The dmamask must be set for EHCI to work */
+static u64 ehci_dmamask = ~(u32) 0;
+static int instance_id = ~(u32) 0;
+
+static int fsl_platform_get_usb_conn_status(void)
+{
+	u32 status;
+
+	status = __raw_readl(MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR) + \
+			HW_USBPHY_STATUS);
+	return ((status & HOSTPHY_CONNECT_STATE) == 0);
+}
+
+/* enable/disable high-speed disconnect detector of phy ctrl */
+static void fsl_platform_set_usb_phy_dis(int enable)
+{
+	if (enable)
+		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR) + HW_USBPHY_CTRL_SET);
+	else
+		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR) + HW_USBPHY_CTRL_CLR);
+}
+
+static int usb_phy_enable(struct mxc_usbh_platform_data *pdata)
+{
+	u32 tmp;
+	void __iomem *phy_reg = MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR);
+	void __iomem *usb_reg = MX28_IO_ADDRESS(MX28_USBCTRL1_BASE_ADDR);
+	void __iomem *usbcmd, *phy_ctrl, *portsc;
+	/* Reset USB IP */
+	usbcmd = usb_reg + UOG_USBCMD;
+	tmp = __raw_readl(usbcmd); /* usb command */
+	tmp &= ~UCMD_RUN_STOP;
+	__raw_writel(tmp, usbcmd);
+	while (__raw_readl(usbcmd) & UCMD_RUN_STOP)
+		;
+	tmp |= UCMD_RESET;
+	__raw_writel(tmp, usbcmd);
+	while (__raw_readl(usbcmd) & UCMD_RESET)
+		;
+	mdelay(10);
+	/* Reset USBPHY module */
+	phy_ctrl = phy_reg + HW_USBPHY_CTRL;
+	tmp = __raw_readl(phy_ctrl);
+	tmp |= BM_USBPHY_CTRL_SFTRST;
+	__raw_writel(tmp, phy_ctrl);
+	udelay(10);
+	/* Remove CLKGATE and SFTRST */
+	tmp = __raw_readl(phy_ctrl);
+	tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
+	__raw_writel(tmp, phy_ctrl);
+	udelay(10);
+	/* set UTMI xcvr */
+	/* Workaround an IC issue for ehci driver:
+	 * when turn off root hub port power, EHCI set
+	 * PORTSC reserved bits to be 0, but PTW with 0
+	 * means 8 bits tranceiver width, here change
+	 * it back to be 16 bits and do PHY diable and
+	 * then enable.
+	 */
+	portsc = usb_reg + UOG_PORTSC1;
+	tmp = __raw_readl(portsc);
+	tmp &=  ~PORTSC_PTS_MASK;
+	tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);
+	__raw_writel(tmp, portsc);
+	/* Power up the PHY */
+	__raw_writel(0, phy_reg + HW_USBPHY_PWD);
+	return 0;
+}
+
+static int fsl_usb_host_init(struct platform_device *pdev)
+{
+	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+	void __iomem *phy_reg = MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR);
+	u32 tmp;
+
+	usb_phy_enable(pdata);
+	/* enable FS/LS device */
+	tmp = __raw_readl(phy_reg + HW_USBPHY_CTRL);
+	tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3);
+	__raw_writel(tmp, phy_reg + HW_USBPHY_CTRL);
+
+	return 0;
+}
+
+static void usbh1_internal_phy_clock_gate(bool on)
+{
+	u32 tmp;
+	void __iomem *phy_reg = MX28_IO_ADDRESS(MX28_USBPHY1_BASE_ADDR);
+
+	if (on) {
+		internal_phy_clk_already_on += 1;
+		if (internal_phy_clk_already_on == 1) {
+			tmp = BM_USBPHY_CTRL_SFTRST | BM_USBPHY_CTRL_CLKGATE;
+			__raw_writel(tmp, phy_reg + HW_USBPHY_CTRL_CLR);
+		}
+	} else {
+		internal_phy_clk_already_on -= 1;
+		if (internal_phy_clk_already_on == 0) {
+			tmp = BM_USBPHY_CTRL_CLKGATE;
+			__raw_writel(tmp, phy_reg + HW_USBPHY_CTRL_SET);
+		}
+	}
+	if (internal_phy_clk_already_on < 0)
+		printk(KERN_ERR "please check phy clock ON/OFF sequence\n");
+}
+static int fsl_usb_host_init_ext(struct platform_device *pdev)
+{
+	usb_clk = clk_get(NULL, "usb1");
+	clk_enable(usb_clk);
+	clk_put(usb_clk);
+	usb_phy_clk = clk_get(NULL, "usb1_phy");
+	clk_enable(usb_phy_clk);
+	clk_put(usb_phy_clk);
+
+	usbh1_internal_phy_clock_gate(true);
+	return fsl_usb_host_init(pdev);
+}
+
+static int fsl_usb_host_uninit_ext(struct platform_device *pdev)
+{
+	usbh1_internal_phy_clock_gate(false);
+	clk_disable(usb_phy_clk);
+	clk_disable(usb_clk);
+	return 0;
+}
+
+static struct mxc_usbh_platform_data usbh1_config = {
+	.init = fsl_usb_host_init_ext,
+	.exit = fsl_usb_host_uninit_ext,
+	.portsc = MXC_EHCI_MODE_ULPI,
+	.otg = NULL,
+	.plt_get_usb_connect_status = fsl_platform_get_usb_conn_status,
+	.plt_usb_disconnect_detect = fsl_platform_set_usb_phy_dis,
+};
+
+/* The resources for kinds of usb devices */
+static struct resource usbh1_resources[] = {
+	[0] = {
+	       .start = (u32) (MX28_USBCTRL1_BASE_ADDR),
+	       .end = (u32) (MX28_USBCTRL1_BASE_ADDR + 0x1ff),
+	       .flags = IORESOURCE_MEM,
+	       },
+	[1] = {
+	       .start = MX28_INT_USB1,
+	       .flags = IORESOURCE_IRQ,
+	       },
+};
+
+static int __init usbh1_init(void)
+{
+	struct platform_device *pdev;
+	int rc;
+
+	if (!cpu_is_mx28())
+		return 0;
+
+	pdev = platform_device_register_simple("mxc-ehci",
+		instance_id, usbh1_resources, ARRAY_SIZE(usbh1_resources));
+	if (IS_ERR(pdev)) {
+		pr_debug("can't register Host, %ld\n",
+			 PTR_ERR(pdev));
+		return -EFAULT;
+	}
+
+	pdev->dev.coherent_dma_mask = 0xffffffff;
+	pdev->dev.dma_mask = &ehci_dmamask;
+
+	rc = platform_device_add_data(pdev, &usbh1_config,
+				      sizeof(struct mxc_usbh_platform_data));
+	if (rc) {
+		platform_device_unregister(pdev);
+		return -EFAULT;
+	}
+
+	instance_id++;
+	return 0;
+}
+module_init(usbh1_init);
