2 * Copyright (c) 2009 Wind River Systems, Inc.
3 * Tom Rix <Tom.Rix@windriver.com>
5 * This is file is based on
6 * repository git.gitorious.org/u-boot-omap3/mainline.git,
7 * branch omap3-dev-usb, file drivers/usb/host/omap3530_usb.c
9 * This is the unique part of its copyright :
11 * ------------------------------------------------------------------------
13 * Copyright (c) 2009 Texas Instruments
15 * ------------------------------------------------------------------------
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #include <asm/omap_common.h>
38 static int platform_needs_initialization = 1;
40 struct musb_config musb_cfg = {
41 .regs = (struct musb_regs *)MENTOR_USB0_BASE,
42 .timeout = OMAP3_USB_TIMEOUT,
47 * OMAP3 USB OTG registers.
49 struct omap3_otg_regs {
58 static struct omap3_otg_regs *otg;
60 #define OMAP3_OTG_SYSCONFIG_SMART_STANDBY_MODE 0x2000
61 #define OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE 0x1000
62 #define OMAP3_OTG_SYSCONFIG_SMART_IDLE_MODE 0x0010
63 #define OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE 0x0008
64 #define OMAP3_OTG_SYSCONFIG_ENABLEWAKEUP 0x0004
65 #define OMAP3_OTG_SYSCONFIG_SOFTRESET 0x0002
66 #define OMAP3_OTG_SYSCONFIG_AUTOIDLE 0x0001
68 #define OMAP3_OTG_SYSSTATUS_RESETDONE 0x0001
70 /* OMAP4430 has an internal PHY, use it */
71 #ifdef CONFIG_OMAP4430
72 #define OMAP3_OTG_INTERFSEL_OMAP 0x0000
74 #define OMAP3_OTG_INTERFSEL_OMAP 0x0001
77 #define OMAP3_OTG_FORCESTDBY_STANDBY 0x0001
80 #ifdef DEBUG_MUSB_OMAP3
81 static void musb_db_otg_regs(void)
84 l = readl(&otg->revision);
85 serial_printf("OTG_REVISION 0x%x\n", l);
86 l = readl(&otg->sysconfig);
87 serial_printf("OTG_SYSCONFIG 0x%x\n", l);
88 l = readl(&otg->sysstatus);
89 serial_printf("OTG_SYSSTATUS 0x%x\n", l);
90 l = readl(&otg->interfsel);
91 serial_printf("OTG_INTERFSEL 0x%x\n", l);
92 l = readl(&otg->forcestdby);
93 serial_printf("OTG_FORCESTDBY 0x%x\n", l);
97 int musb_platform_init(void)
101 if (platform_needs_initialization) {
105 * OMAP3EVM uses ISP1504 phy and so
106 * twl4030 related init is not required.
108 #ifdef CONFIG_TWL4030_USB
109 if (twl4030_usb_ulpi_init()) {
110 serial_printf("ERROR: %s Could not initialize PHY\n",
111 __PRETTY_FUNCTION__);
116 #ifdef CONFIG_TWL6030_POWER
117 twl6030_usb_device_settings();
120 otg = (struct omap3_otg_regs *)OMAP3_OTG_BASE;
122 /* Set OTG to always be on */
123 writel(OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE |
124 OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE, &otg->sysconfig);
126 /* Set the interface */
127 writel(OMAP3_OTG_INTERFSEL_OMAP, &otg->interfsel);
129 /* Clear force standby */
130 stdby = readl(&otg->forcestdby);
131 stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
132 writel(stdby, &otg->forcestdby);
134 #ifdef CONFIG_OMAP3_EVM
135 musb_cfg.extvbus = omap3_evm_need_extvbus();
138 #ifdef CONFIG_OMAP4430
139 u32 *usbotghs_control =
140 (u32 *)((*ctrl)->control_usbotghs_ctrl);
141 *usbotghs_control = 0x15;
143 platform_needs_initialization = 0;
146 ret = platform_needs_initialization;
148 #ifdef CONFIG_TWL4030_USB
155 void musb_platform_deinit(void)