1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/*
* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
*
* (C) Copyright 2009 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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
*/
#include <common.h>
#include <usb.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx5x_pins.h>
#include <asm/arch/iomux.h>
#include <asm/gpio.h>
#include <usb/ehci-fsl.h>
#include <usb/ulpi.h>
#include <errno.h>
#include "../../drivers/usb/host/ehci.h"
/* USB pin configuration */
#define USB_PAD_CONFIG (PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST | \
PAD_CTL_DRV_HIGH | PAD_CTL_100K_PU | \
PAD_CTL_HYS_ENABLE | PAD_CTL_PUE_PULL)
/*
* Configure the USB H1 and USB H2 IOMUX
*/
void setup_iomux_usb(void)
{
setup_iomux_usb_h1();
if (machine_is_efikasb())
setup_iomux_usb_h2();
/* USB PHY reset */
mxc_request_iomux(MX51_PIN_EIM_D27, IOMUX_CONFIG_ALT1);
mxc_iomux_set_pad(MX51_PIN_EIM_D27, PAD_CTL_PKE_ENABLE |
PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH);
/* USB HUB reset */
mxc_request_iomux(MX51_PIN_GPIO1_5, IOMUX_CONFIG_ALT0);
mxc_iomux_set_pad(MX51_PIN_GPIO1_5, PAD_CTL_PKE_ENABLE |
PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH);
/* WIFI EN (act low) */
mxc_request_iomux(MX51_PIN_EIM_A22, IOMUX_CONFIG_GPIO);
mxc_iomux_set_pad(MX51_PIN_EIM_A22, 0);
/* WIFI RESET */
mxc_request_iomux(MX51_PIN_EIM_A16, IOMUX_CONFIG_GPIO);
mxc_iomux_set_pad(MX51_PIN_EIM_A16, 0);
/* BT EN (act low) */
mxc_request_iomux(MX51_PIN_EIM_A17, IOMUX_CONFIG_GPIO);
mxc_iomux_set_pad(MX51_PIN_EIM_A17, 0);
}
/*
* Enable devices connected to USB BUSes
*/
static void efika_usb_enable_devices(void)
{
/* Enable Bluetooth */
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A17), 0);
udelay(10000);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_A17), 1);
/* Enable WiFi */
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A22), 1);
udelay(10000);
/* Reset the WiFi chip */
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A16), 0);
udelay(10000);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_A16), 1);
}
/*
* Reset USB HUB (or HUBs on EfikaSB)
*/
static void efika_usb_hub_reset(void)
{
/* HUB reset */
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 1);
udelay(1000);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 0);
udelay(1000);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 1);
}
/*
* Reset USB PHY (or PHYs on EfikaSB)
*/
static void efika_usb_phy_reset(void)
{
/* SMSC 3317 PHY reset */
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_D27), 0);
udelay(1000);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_D27), 1);
}
static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
uint32_t alt0, uint32_t alt1)
{
int ret;
struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
struct ulpi_viewport ulpi_vp;
mxc_request_iomux(stp_gpio, alt0);
mxc_iomux_set_pad(stp_gpio, PAD_CTL_DRV_HIGH |
PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
gpio_direction_output(IOMUX_TO_GPIO(stp_gpio), 0);
udelay(1000);
gpio_set_value(IOMUX_TO_GPIO(stp_gpio), 1);
udelay(1000);
mxc_request_iomux(stp_gpio, alt1);
mxc_iomux_set_pad(stp_gpio, USB_PAD_CONFIG);
udelay(10000);
ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
ulpi_vp.port_num = 0;
ret = ulpi_init(&ulpi_vp);
if (ret) {
printf("Efika USB ULPI initialization failed\n");
return;
}
/* ULPI set flags */
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
ULPI_OTG_EXTVBUSIND);
ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
ULPI_FC_SUSPENDM);
ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
/* Set VBus */
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
/*
* Set VBusChrg
*
* NOTE: This violates USB specification, but otherwise, USB on Efika
* doesn't work.
*/
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
}
int board_ehci_hcd_init(int port)
{
/* Init iMX51 EHCI */
efika_usb_phy_reset();
efika_usb_hub_reset();
efika_usb_enable_devices();
return 0;
}
void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
{
uint32_t port = OTG_BASE_ADDR + (0x200 * CONFIG_MXC_USB_PORT);
struct usb_ehci *ehci = (struct usb_ehci *)port;
struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
struct ulpi_viewport ulpi_vp;
ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
ulpi_vp.port_num = 0;
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
mdelay(50);
/* terminate the reset */
*reg = ehci_readl(status_reg);
*reg |= EHCI_PS_PE;
}
void board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
{
uint32_t tmp;
if (port == 0) {
/* Adjust UTMI PHY frequency to 24MHz */
tmp = readl(OTG_BASE_ADDR + 0x80c);
tmp = (tmp & ~0x3) | 0x01;
writel(tmp, OTG_BASE_ADDR + 0x80c);
} else if (port == 1) {
efika_ehci_init(ehci, MX51_PIN_USBH1_STP,
IOMUX_CONFIG_ALT2, IOMUX_CONFIG_ALT0);
} else if ((port == 2) && machine_is_efikasb()) {
efika_ehci_init(ehci, MX51_PIN_EIM_A26,
IOMUX_CONFIG_ALT1, IOMUX_CONFIG_ALT2);
}
if (port)
mdelay(10);
}
|
