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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* am3517evm.c - board file for TI's AM3517 family of devices.
*
* Author: Vaibhav Hiremath <hvaibhav@ti.com>
*
* Based on ti/evm/evm.c
*
* Copyright (C) 2010
* Texas Instruments Incorporated - http://www.ti.com/
*/
#include <common.h>
#include <dm.h>
#include <ns16550.h>
#include <asm/io.h>
#include <asm/omap_musb.h>
#include <asm/arch/am35x_def.h>
#include <asm/arch/mem.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/musb.h>
#include <asm/mach-types.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/musb.h>
#include <i2c.h>
#include <netdev.h>
#include "am3517evm.h"
DECLARE_GLOBAL_DATA_PTR;
#define AM3517_IP_SW_RESET 0x48002598
#define CPGMACSS_SW_RST (1 << 1)
#define PHY_GPIO 30
#if defined(CONFIG_SPL_BUILD)
#if defined(CONFIG_SPL_OS_BOOT)
int spl_start_uboot(void)
{
/* break into full u-boot on 'c' */
return serial_tstc() && serial_getc() == 'c';
}
#endif
#endif
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init(void)
{
gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
/* board id for Linux */
gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM;
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
return 0;
}
#ifdef CONFIG_USB_MUSB_AM35X
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.num_eps = 16,
.ram_bits = 12,
};
static struct omap_musb_board_data musb_board_data = {
.set_phy_power = am35x_musb_phy_power,
.clear_irq = am35x_musb_clear_irq,
.reset = am35x_musb_reset,
};
static struct musb_hdrc_platform_data musb_plat = {
#if defined(CONFIG_USB_MUSB_HOST)
.mode = MUSB_HOST,
#elif defined(CONFIG_USB_MUSB_GADGET)
.mode = MUSB_PERIPHERAL,
#else
#error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
#endif
.config = &musb_config,
.power = 250,
.platform_ops = &am35x_ops,
.board_data = &musb_board_data,
};
static void am3517_evm_musb_init(void)
{
/*
* Set up USB clock/mode in the DEVCONF2 register.
* USB2.0 PHY reference clock is 13 MHz
*/
clrsetbits_le32(&am35x_scm_general_regs->devconf2,
CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
CONF2_VBDTCTEN | CONF2_DATPOL);
musb_register(&musb_plat, &musb_board_data,
(void *)AM35XX_IPSS_USBOTGSS_BASE);
}
#else
#define am3517_evm_musb_init() do {} while (0)
#endif
/*
* Routine: misc_init_r
* Description: Init i2c, ethernet, etc... (done here so udelay works)
*/
int misc_init_r(void)
{
volatile unsigned int ctr;
u32 reset;
#if !defined(CONFIG_DM_I2C)
#ifdef CONFIG_SYS_I2C_OMAP24XX
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
#endif
#endif
omap_die_id_display();
am3517_evm_musb_init();
if (gpio_request(PHY_GPIO, "gpio_30") == 0) {
/* activate PHY reset */
gpio_direction_output(PHY_GPIO, 0);
gpio_set_value(PHY_GPIO, 0);
ctr = 0;
do {
udelay(1000);
ctr++;
} while (ctr < 300);
/* deactivate PHY reset */
gpio_set_value(PHY_GPIO, 1);
/* allow the PHY to stabilize and settle down */
ctr = 0;
do {
udelay(1000);
ctr++;
} while (ctr < 300);
/* ensure that the module is out of reset */
reset = readl(AM3517_IP_SW_RESET);
reset &= (~CPGMACSS_SW_RST);
writel(reset, AM3517_IP_SW_RESET);
/* Free requested GPIO */
gpio_free(PHY_GPIO);
}
return 0;
}
/*
* Routine: set_muxconf_regs
* Description: Setting up the configuration Mux registers specific to the
* hardware. Many pins need to be moved from protect to primary
* mode.
*/
void set_muxconf_regs(void)
{
MUX_AM3517EVM();
}
#if defined(CONFIG_MMC)
int board_mmc_init(bd_t *bis)
{
return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif
#if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
int board_eth_init(bd_t *bis)
{
int rv, n = 0;
rv = cpu_eth_init(bis);
if (rv > 0)
n += rv;
rv = usb_eth_initialize(bis);
if (rv > 0)
n += rv;
return n;
}
#endif
|
