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,
37 static int platform_needs_initialization = 1;
39 struct musb_config musb_cfg = {
40 .regs = (struct musb_regs *)MENTOR_USB0_BASE,
41 .timeout = OMAP3_USB_TIMEOUT,
46 * OMAP3 USB OTG registers.
48 struct omap3_otg_regs {
57 static struct omap3_otg_regs *otg;
59 #define OMAP3_OTG_SYSCONFIG_SMART_STANDBY_MODE 0x2000
60 #define OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE 0x1000
61 #define OMAP3_OTG_SYSCONFIG_SMART_IDLE_MODE 0x0010
62 #define OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE 0x0008
63 #define OMAP3_OTG_SYSCONFIG_ENABLEWAKEUP 0x0004
64 #define OMAP3_OTG_SYSCONFIG_SOFTRESET 0x0002
65 #define OMAP3_OTG_SYSCONFIG_AUTOIDLE 0x0001
67 #define OMAP3_OTG_SYSSTATUS_RESETDONE 0x0001
69 /* OMAP4430 has an internal PHY, use it */
70 #ifdef CONFIG_OMAP4430
71 #define OMAP3_OTG_INTERFSEL_OMAP 0x0000
73 #define OMAP3_OTG_INTERFSEL_OMAP 0x0001
76 #define OMAP3_OTG_FORCESTDBY_STANDBY 0x0001
79 #ifdef DEBUG_MUSB_OMAP3
80 static void musb_db_otg_regs(void)
83 l = readl(&otg->revision);
84 serial_printf("OTG_REVISION 0x%x\n", l);
85 l = readl(&otg->sysconfig);
86 serial_printf("OTG_SYSCONFIG 0x%x\n", l);
87 l = readl(&otg->sysstatus);
88 serial_printf("OTG_SYSSTATUS 0x%x\n", l);
89 l = readl(&otg->interfsel);
90 serial_printf("OTG_INTERFSEL 0x%x\n", l);
91 l = readl(&otg->forcestdby);
92 serial_printf("OTG_FORCESTDBY 0x%x\n", l);
96 int musb_platform_init(void)
100 if (platform_needs_initialization) {
104 * OMAP3EVM uses ISP1504 phy and so
105 * twl4030 related init is not required.
107 #ifdef CONFIG_TWL4030_USB
108 if (twl4030_usb_ulpi_init()) {
109 serial_printf("ERROR: %s Could not initialize PHY\n",
110 __PRETTY_FUNCTION__);
115 #ifdef CONFIG_TWL6030_POWER
116 twl6030_usb_device_settings();
119 otg = (struct omap3_otg_regs *)OMAP3_OTG_BASE;
121 /* Set OTG to always be on */
122 writel(OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE |
123 OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE, &otg->sysconfig);
125 /* Set the interface */
126 writel(OMAP3_OTG_INTERFSEL_OMAP, &otg->interfsel);
128 /* Clear force standby */
129 stdby = readl(&otg->forcestdby);
130 stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
131 writel(stdby, &otg->forcestdby);
133 #ifdef CONFIG_OMAP3_EVM
134 musb_cfg.extvbus = omap3_evm_need_extvbus();
137 #ifdef CONFIG_OMAP4430
138 u32 *usbotghs_control = (u32 *)(CTRL_BASE + 0x33C);
139 *usbotghs_control = 0x15;
141 platform_needs_initialization = 0;
144 ret = platform_needs_initialization;
146 #ifdef CONFIG_TWL4030_USB
153 void musb_platform_deinit(void)