Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

5 files changed, 576 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/usb/phy/Kconfig b/roms/u-boot/drivers/usb/phy/Kconfig
new file mode 100644
index 000000000..8741553d0
--- /dev/null
+++ b/roms/u-boot/drivers/usb/phy/Kconfig
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2017
+# Adam Ford, Logic PD, aford173@gmail.com
+
+comment "USB Phy"
+
+config TWL4030_USB
+	bool "TWL4030 PHY"
+
+config OMAP_USB_PHY
+	bool "OMAP PHY"
+
+config ROCKCHIP_USB2_PHY
+	bool "Rockchip USB2 PHY"
diff --git a/roms/u-boot/drivers/usb/phy/Makefile b/roms/u-boot/drivers/usb/phy/Makefile
new file mode 100644
index 000000000..20f7edf48
--- /dev/null
+++ b/roms/u-boot/drivers/usb/phy/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2009 Wind River Systems, Inc.
+# Tom Rix <Tom.Rix@windriver.com>
+
+obj-$(CONFIG_TWL4030_USB) += twl4030.o
+obj-$(CONFIG_OMAP_USB_PHY) += omap_usb_phy.o
+obj-$(CONFIG_ROCKCHIP_USB2_PHY) += rockchip_usb2_phy.o
diff --git a/roms/u-boot/drivers/usb/phy/omap_usb_phy.c b/roms/u-boot/drivers/usb/phy/omap_usb_phy.c
new file mode 100644
index 000000000..be733f39b
--- /dev/null
+++ b/roms/u-boot/drivers/usb/phy/omap_usb_phy.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * OMAP USB PHY Support
+ *
+ * (C) Copyright 2013
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <asm/omap_common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+
+#include <linux/compat.h>
+#include <linux/usb/dwc3.h>
+#include <linux/usb/xhci-omap.h>
+
+#include <usb/xhci.h>
+
+#ifdef CONFIG_OMAP_USB3PHY1_HOST
+struct usb3_dpll_params {
+	u16	m;
+	u8	n;
+	u8	freq:3;
+	u8	sd;
+	u32	mf;
+};
+
+struct usb3_dpll_map {
+	unsigned long rate;
+	struct usb3_dpll_params params;
+	struct usb3_dpll_map *dpll_map;
+};
+
+static struct usb3_dpll_map dpll_map_usb[] = {
+	{12000000, {1250, 5, 4, 20, 0} },	/* 12 MHz */
+	{16800000, {3125, 20, 4, 20, 0} },	/* 16.8 MHz */
+	{19200000, {1172, 8, 4, 20, 65537} },	/* 19.2 MHz */
+	{20000000, {1000, 7, 4, 10, 0} },	/* 20 MHz */
+	{26000000, {1250, 12, 4, 20, 0} },	/* 26 MHz */
+	{38400000, {3125, 47, 4, 20, 92843} },	/* 38.4 MHz */
+	{ },					/* Terminator */
+};
+
+static struct usb3_dpll_params *omap_usb3_get_dpll_params(void)
+{
+	unsigned long rate;
+	struct usb3_dpll_map *dpll_map = dpll_map_usb;
+
+	rate = get_sys_clk_freq();
+
+	for (; dpll_map->rate; dpll_map++) {
+		if (rate == dpll_map->rate)
+			return &dpll_map->params;
+	}
+
+	dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate);
+
+	return NULL;
+}
+
+static void omap_usb_dpll_relock(struct omap_usb3_phy *phy_regs)
+{
+	u32 val;
+
+	writel(SET_PLL_GO, &phy_regs->pll_go);
+	do {
+		val = readl(&phy_regs->pll_status);
+			if (val & PLL_LOCK)
+				break;
+	} while (1);
+}
+
+static void omap_usb_dpll_lock(struct omap_usb3_phy *phy_regs)
+{
+	struct usb3_dpll_params	*dpll_params;
+	u32 val;
+
+	dpll_params = omap_usb3_get_dpll_params();
+	if (!dpll_params)
+		return;
+
+	val = readl(&phy_regs->pll_config_1);
+	val &= ~PLL_REGN_MASK;
+	val |= dpll_params->n << PLL_REGN_SHIFT;
+	writel(val, &phy_regs->pll_config_1);
+
+	val = readl(&phy_regs->pll_config_2);
+	val &= ~PLL_SELFREQDCO_MASK;
+	val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT;
+	writel(val, &phy_regs->pll_config_2);
+
+	val = readl(&phy_regs->pll_config_1);
+	val &= ~PLL_REGM_MASK;
+	val |= dpll_params->m << PLL_REGM_SHIFT;
+	writel(val, &phy_regs->pll_config_1);
+
+	val = readl(&phy_regs->pll_config_4);
+	val &= ~PLL_REGM_F_MASK;
+	val |= dpll_params->mf << PLL_REGM_F_SHIFT;
+	writel(val, &phy_regs->pll_config_4);
+
+	val = readl(&phy_regs->pll_config_3);
+	val &= ~PLL_SD_MASK;
+	val |= dpll_params->sd << PLL_SD_SHIFT;
+	writel(val, &phy_regs->pll_config_3);
+
+	omap_usb_dpll_relock(phy_regs);
+}
+
+static void usb3_phy_partial_powerup(struct omap_usb3_phy *phy_regs)
+{
+	u32 rate = get_sys_clk_freq()/1000000;
+	u32 val;
+
+	val = readl((*ctrl)->control_phy_power_usb);
+	val &= ~(USB3_PWRCTL_CLK_CMD_MASK | USB3_PWRCTL_CLK_FREQ_MASK);
+	val |= (USB3_PHY_PARTIAL_RX_POWERON | USB3_PHY_TX_RX_POWERON);
+	val |= rate << USB3_PWRCTL_CLK_FREQ_SHIFT;
+
+	writel(val, (*ctrl)->control_phy_power_usb);
+}
+
+void usb_phy_power(int on)
+{
+	u32 val;
+
+	val = readl((*ctrl)->control_phy_power_usb);
+	if (on) {
+		val &= ~USB3_PWRCTL_CLK_CMD_MASK;
+		val |= USB3_PHY_TX_RX_POWERON;
+	} else {
+		val &= (~USB3_PWRCTL_CLK_CMD_MASK & ~USB3_PHY_TX_RX_POWERON);
+	}
+
+	writel(val, (*ctrl)->control_phy_power_usb);
+}
+
+void omap_usb3_phy_init(struct omap_usb3_phy *phy_regs)
+{
+	omap_usb_dpll_lock(phy_regs);
+	usb3_phy_partial_powerup(phy_regs);
+	/*
+	 * Give enough time for the PHY to partially power-up before
+	 * powering it up completely. delay value suggested by the HW
+	 * team.
+	 */
+	mdelay(100);
+}
+
+static void omap_enable_usb3_phy(struct omap_xhci *omap)
+{
+	u32	val;
+
+	val = (USBOTGSS_DMADISABLE |
+			USBOTGSS_STANDBYMODE_SMRT_WKUP |
+			USBOTGSS_IDLEMODE_NOIDLE);
+	writel(val, &omap->otg_wrapper->sysconfig);
+
+	/* Clear the utmi OTG status */
+	val = readl(&omap->otg_wrapper->utmi_otg_status);
+	writel(val, &omap->otg_wrapper->utmi_otg_status);
+
+	/* Enable interrupts */
+	writel(USBOTGSS_COREIRQ_EN, &omap->otg_wrapper->irqenable_set_0);
+	val = (USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN |
+			USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN |
+			USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN	|
+			USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN	|
+			USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN	|
+			USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN	|
+			USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN |
+			USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN |
+			USBOTGSS_IRQ_SET_1_OEVT_EN);
+	writel(val, &omap->otg_wrapper->irqenable_set_1);
+
+	/* Clear the IRQ status */
+	val = readl(&omap->otg_wrapper->irqstatus_1);
+	writel(val, &omap->otg_wrapper->irqstatus_1);
+	val = readl(&omap->otg_wrapper->irqstatus_0);
+	writel(val, &omap->otg_wrapper->irqstatus_0);
+};
+#endif /* CONFIG_OMAP_USB3PHY1_HOST */
+
+#ifdef CONFIG_OMAP_USB2PHY2_HOST
+static void omap_enable_usb2_phy2(struct omap_xhci *omap)
+{
+	u32 reg, val;
+
+	val = (~USB2PHY_AUTORESUME_EN & USB2PHY_DISCHGDET);
+	writel(val, (*ctrl)->control_srcomp_north_side);
+
+	setbits_le32((*prcm)->cm_coreaon_usb_phy2_core_clkctrl,
+			USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
+
+	setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl,
+					(USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K |
+					 OTG_SS_CLKCTRL_MODULEMODE_HW));
+
+	/* This is an undocumented Reserved register */
+	reg = 0x4a0086c0;
+	val = readl(reg);
+	val |= 0x100;
+	setbits_le32(reg, val);
+}
+
+void usb_phy_power(int on)
+{
+	return;
+}
+#endif /* CONFIG_OMAP_USB2PHY2_HOST */
+
+#ifdef CONFIG_AM437X_USB2PHY2_HOST
+static void am437x_enable_usb2_phy2(struct omap_xhci *omap)
+{
+	const u32 usb_otg_ss_clk_val = (USBOTGSSX_CLKCTRL_MODULE_EN |
+				USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960);
+
+	writel(usb_otg_ss_clk_val, PRM_PER_USB_OTG_SS0_CLKCTRL);
+	writel(usb_otg_ss_clk_val, PRM_PER_USB_OTG_SS1_CLKCTRL);
+
+	writel(USBPHYOCPSCP_MODULE_EN, PRM_PER_USBPHYOCP2SCP0_CLKCTRL);
+	writel(USBPHYOCPSCP_MODULE_EN, PRM_PER_USBPHYOCP2SCP1_CLKCTRL);
+}
+
+void usb_phy_power(int on)
+{
+	u32 val;
+
+	/* USB1_CTRL */
+	val = readl(USB1_CTRL);
+	if (on) {
+		/*
+		 * these bits are re-used on AM437x to power up/down the USB
+		 * CM and OTG PHYs, if we don't toggle them, USB will not be
+		 * functional on newer silicon revisions
+		 */
+		val &= ~(USB1_CTRL_CM_PWRDN | USB1_CTRL_OTG_PWRDN);
+	} else {
+		val |= USB1_CTRL_CM_PWRDN | USB1_CTRL_OTG_PWRDN;
+	}
+
+	writel(val, USB1_CTRL);
+}
+#endif /* CONFIG_AM437X_USB2PHY2_HOST */
+
+void omap_enable_phy(struct omap_xhci *omap)
+{
+#ifdef CONFIG_OMAP_USB2PHY2_HOST
+	omap_enable_usb2_phy2(omap);
+#endif
+
+#ifdef CONFIG_AM437X_USB2PHY2_HOST
+	am437x_enable_usb2_phy2(omap);
+#endif
+
+#ifdef CONFIG_OMAP_USB3PHY1_HOST
+	omap_enable_usb3_phy(omap);
+	omap_usb3_phy_init(omap->usb3_phy);
+#endif
+}
diff --git a/roms/u-boot/drivers/usb/phy/rockchip_usb2_phy.c b/roms/u-boot/drivers/usb/phy/rockchip_usb2_phy.c
new file mode 100644
index 000000000..93caa821a
--- /dev/null
+++ b/roms/u-boot/drivers/usb/phy/rockchip_usb2_phy.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2016 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <hang.h>
+#include <log.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+
+#include "../gadget/dwc2_udc_otg_priv.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define BIT_WRITEABLE_SHIFT	16
+
+struct usb2phy_reg {
+	unsigned int offset;
+	unsigned int bitend;
+	unsigned int bitstart;
+	unsigned int disable;
+	unsigned int enable;
+};
+
+/**
+ * struct rockchip_usb2_phy_cfg: usb-phy port configuration
+ * @port_reset: usb otg per-port reset register
+ * @soft_con: software control usb otg register
+ * @suspend: phy suspend register
+ */
+struct rockchip_usb2_phy_cfg {
+	struct usb2phy_reg port_reset;
+	struct usb2phy_reg soft_con;
+	struct usb2phy_reg suspend;
+};
+
+struct rockchip_usb2_phy_dt_id {
+	char		compatible[128];
+	const void	*data;
+};
+
+static const struct rockchip_usb2_phy_cfg rk3288_pdata = {
+	.port_reset     = {0x00, 12, 12, 0, 1},
+	.soft_con       = {0x08, 2, 2, 0, 1},
+	.suspend	= {0x0c, 5, 0, 0x01, 0x2A},
+};
+
+static struct rockchip_usb2_phy_dt_id rockchip_usb2_phy_dt_ids[] = {
+	{ .compatible = "rockchip,rk3288-usb-phy", .data = &rk3288_pdata },
+	{}
+};
+
+static void property_enable(struct dwc2_plat_otg_data *pdata,
+				  const struct usb2phy_reg *reg, bool en)
+{
+	unsigned int val, mask, tmp;
+
+	tmp = en ? reg->enable : reg->disable;
+	mask = GENMASK(reg->bitend, reg->bitstart);
+	val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
+
+	writel(val, pdata->regs_phy + reg->offset);
+}
+
+
+void otg_phy_init(struct dwc2_udc *dev)
+{
+	struct dwc2_plat_otg_data *pdata = dev->pdata;
+	struct rockchip_usb2_phy_cfg *phy_cfg = NULL;
+	struct rockchip_usb2_phy_dt_id *of_id;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(rockchip_usb2_phy_dt_ids); i++) {
+		of_id = &rockchip_usb2_phy_dt_ids[i];
+		if (ofnode_device_is_compatible(pdata->phy_of_node,
+						of_id->compatible)){
+			phy_cfg = (struct rockchip_usb2_phy_cfg *)of_id->data;
+			break;
+		}
+	}
+	if (!phy_cfg) {
+		debug("Can't find device platform data\n");
+
+		hang();
+		return;
+	}
+	pdata->priv = phy_cfg;
+	/* disable software control */
+	property_enable(pdata, &phy_cfg->soft_con, false);
+
+	/* reset otg port */
+	property_enable(pdata, &phy_cfg->port_reset, true);
+	mdelay(1);
+	property_enable(pdata, &phy_cfg->port_reset, false);
+	udelay(1);
+}
+
+void otg_phy_off(struct dwc2_udc *dev)
+{
+	struct dwc2_plat_otg_data *pdata = dev->pdata;
+	struct rockchip_usb2_phy_cfg *phy_cfg = pdata->priv;
+
+	/* enable software control */
+	property_enable(pdata, &phy_cfg->soft_con, true);
+	/* enter suspend */
+	property_enable(pdata, &phy_cfg->suspend, true);
+}
diff --git a/roms/u-boot/drivers/usb/phy/twl4030.c b/roms/u-boot/drivers/usb/phy/twl4030.c
new file mode 100644
index 000000000..676868bea
--- /dev/null
+++ b/roms/u-boot/drivers/usb/phy/twl4030.c
@@ -0,0 +1,176 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2009 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix@windriver.com>
+ *
+ * This is file is based on
+ * repository git.gitorious.org/u-boot-omap3/mainline.git,
+ * branch omap3-dev-usb, file drivers/usb/gadget/twl4030_usb.c
+ *
+ * This is the unique part of its copyright :
+ *
+ * ------------------------------------------------------------------------
+ *
+ *  * (C) Copyright 2009 Atin Malaviya (atin.malaviya@gmail.com)
+ *
+ * Based on: twl4030_usb.c in linux 2.6 (drivers/i2c/chips/twl4030_usb.c)
+ * Copyright (C) 2004-2007 Texas Instruments
+ * Copyright (C) 2008 Nokia Corporation
+ * Contact: Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * Author: Atin Malaviya (atin.malaviya@gmail.com)
+ *
+ * ------------------------------------------------------------------------
+ */
+
+#include <twl4030.h>
+#include <linux/delay.h>
+
+/* Defines for bits in registers */
+#define OPMODE_MASK		(3 << 3)
+#define XCVRSELECT_MASK		(3 << 0)
+#define CARKITMODE		(1 << 2)
+#define OTG_ENAB		(1 << 5)
+#define PHYPWD			(1 << 0)
+#define CLOCKGATING_EN		(1 << 2)
+#define CLK32K_EN		(1 << 1)
+#define REQ_PHY_DPLL_CLK	(1 << 0)
+#define PHY_DPLL_CLK		(1 << 0)
+
+static int twl4030_usb_write(u8 address, u8 data)
+{
+	int ret;
+
+	ret = twl4030_i2c_write_u8(TWL4030_CHIP_USB, address, data);
+	if (ret != 0)
+		printf("TWL4030:USB:Write[0x%x] Error %d\n", address, ret);
+
+	return ret;
+}
+
+static int twl4030_usb_read(u8 address)
+{
+	u8 data;
+	int ret;
+
+	ret = twl4030_i2c_read_u8(TWL4030_CHIP_USB, address, &data);
+	if (ret == 0)
+		ret = data;
+	else
+		printf("TWL4030:USB:Read[0x%x] Error %d\n", address, ret);
+
+	return ret;
+}
+
+static void twl4030_usb_ldo_init(void)
+{
+	/* Enable writing to power configuration registers */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0xC0);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0x0C);
+
+	/* put VUSB3V1 LDO in active state */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB_DEDICATED2, 0x00);
+
+	/* input to VUSB3V1 LDO is from VBAT, not VBUS */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB_DEDICATED1, 0x14);
+
+	/* turn on 3.1V regulator */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB3V1_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB3V1_TYPE, 0x00);
+
+	/* turn on 1.5V regulator */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V5_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V5_TYPE, 0x00);
+
+	/* turn on 1.8V regulator */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V8_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V8_TYPE, 0x00);
+
+	/* disable access to power configuration registers */
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0x00);
+}
+
+static void twl4030_phy_power(void)
+{
+	u8 pwr, clk;
+
+	/* Power the PHY */
+	pwr = twl4030_usb_read(TWL4030_USB_PHY_PWR_CTRL);
+	pwr &= ~PHYPWD;
+	twl4030_usb_write(TWL4030_USB_PHY_PWR_CTRL, pwr);
+	/* Enable clocks */
+	clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
+	clk |= CLOCKGATING_EN | CLK32K_EN;
+	twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
+}
+
+/*
+ * Initiaze the ULPI interface
+ * ULPI : Universal Transceiver Macrocell Low Pin Interface
+ * An interface between the USB link controller like musb and the
+ * the PHY or transceiver that drives the actual bus.
+ */
+int twl4030_usb_ulpi_init(void)
+{
+	long timeout = 1000 * 1000; /* 1 sec */;
+	u8 clk, sts, pwr;
+
+	/* twl4030 ldo init */
+	twl4030_usb_ldo_init();
+
+	/* Enable the twl4030 phy */
+	twl4030_phy_power();
+
+	/* Enable DPLL to access PHY registers over I2C */
+	clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
+	clk |= REQ_PHY_DPLL_CLK;
+	twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
+
+	/* Check if the PHY DPLL is locked */
+	sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
+	while (!(sts & PHY_DPLL_CLK) && 0 < timeout) {
+		udelay(10);
+		sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
+		timeout -= 10;
+	}
+
+	/* Final check */
+	sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
+	if (!(sts & PHY_DPLL_CLK)) {
+		printf("Error:TWL4030:USB Timeout setting PHY DPLL clock\n");
+		return -1;
+	}
+
+	/*
+	 * There are two circuit blocks attached to the PHY,
+	 * Carkit and USB OTG.  Disable Carkit and enable USB OTG
+	 */
+	twl4030_usb_write(TWL4030_USB_IFC_CTRL_CLR, CARKITMODE);
+	pwr = twl4030_usb_read(TWL4030_USB_POWER_CTRL);
+	pwr |= OTG_ENAB;
+	twl4030_usb_write(TWL4030_USB_POWER_CTRL_SET, pwr);
+
+	/* Clear the opmode bits to ensure normal encode */
+	twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, OPMODE_MASK);
+
+	/* Clear the xcvrselect bits to enable the high speed transeiver */
+	twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, XCVRSELECT_MASK);
+
+	/* Let ULPI control the DPLL clock */
+	clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
+	clk &= ~REQ_PHY_DPLL_CLK;
+	twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
+
+	return 0;
+}