1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * am3517evm.c - board file for TI's AM3517 family of devices.
4 *
5 * Author: Vaibhav Hiremath <hvaibhav@ti.com>
6 *
7 * Based on ti/evm/evm.c
8 *
9 * Copyright (C) 2010
10 * Texas Instruments Incorporated - http://www.ti.com/
11 */
12
13 #include <common.h>
14 #include <dm.h>
15 #include <ns16550.h>
16 #include <asm/io.h>
17 #include <asm/omap_musb.h>
18 #include <asm/arch/am35x_def.h>
19 #include <asm/arch/mem.h>
20 #include <asm/arch/mux.h>
21 #include <asm/arch/sys_proto.h>
22 #include <asm/arch/mmc_host_def.h>
23 #include <asm/arch/musb.h>
24 #include <asm/mach-types.h>
25 #include <linux/errno.h>
26 #include <asm/gpio.h>
27 #include <linux/usb/ch9.h>
28 #include <linux/usb/gadget.h>
29 #include <linux/usb/musb.h>
30 #include <i2c.h>
31 #include <netdev.h>
32 #include "am3517evm.h"
33
34 DECLARE_GLOBAL_DATA_PTR;
35
36 #define AM3517_IP_SW_RESET 0x48002598
37 #define CPGMACSS_SW_RST (1 << 1)
38 #define PHY_GPIO 30
39
40
41 /*
42 * Routine: board_init
43 * Description: Early hardware init.
44 */
board_init(void)45 int board_init(void)
46 {
47 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
48 /* board id for Linux */
49 gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM;
50 /* boot param addr */
51 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
52
53 return 0;
54 }
55
56 #ifdef CONFIG_USB_MUSB_AM35X
57 static struct musb_hdrc_config musb_config = {
58 .multipoint = 1,
59 .dyn_fifo = 1,
60 .num_eps = 16,
61 .ram_bits = 12,
62 };
63
64 static struct omap_musb_board_data musb_board_data = {
65 .set_phy_power = am35x_musb_phy_power,
66 .clear_irq = am35x_musb_clear_irq,
67 .reset = am35x_musb_reset,
68 };
69
70 static struct musb_hdrc_platform_data musb_plat = {
71 #if defined(CONFIG_USB_MUSB_HOST)
72 .mode = MUSB_HOST,
73 #elif defined(CONFIG_USB_MUSB_GADGET)
74 .mode = MUSB_PERIPHERAL,
75 #else
76 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
77 #endif
78 .config = &musb_config,
79 .power = 250,
80 .platform_ops = &am35x_ops,
81 .board_data = &musb_board_data,
82 };
83
am3517_evm_musb_init(void)84 static void am3517_evm_musb_init(void)
85 {
86 /*
87 * Set up USB clock/mode in the DEVCONF2 register.
88 * USB2.0 PHY reference clock is 13 MHz
89 */
90 clrsetbits_le32(&am35x_scm_general_regs->devconf2,
91 CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
92 CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
93 CONF2_VBDTCTEN | CONF2_DATPOL);
94
95 musb_register(&musb_plat, &musb_board_data,
96 (void *)AM35XX_IPSS_USBOTGSS_BASE);
97 }
98 #else
99 #define am3517_evm_musb_init() do {} while (0)
100 #endif
101
102 /*
103 * Routine: misc_init_r
104 * Description: Init i2c, ethernet, etc... (done here so udelay works)
105 */
misc_init_r(void)106 int misc_init_r(void)
107 {
108 volatile unsigned int ctr;
109 u32 reset;
110
111 #ifdef CONFIG_SYS_I2C_OMAP24XX
112 i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
113 #endif
114
115 omap_die_id_display();
116
117 am3517_evm_musb_init();
118
119 if (gpio_request(PHY_GPIO, "gpio_30") == 0) {
120 /* activate PHY reset */
121 gpio_direction_output(PHY_GPIO, 0);
122 gpio_set_value(PHY_GPIO, 0);
123
124 ctr = 0;
125 do {
126 udelay(1000);
127 ctr++;
128 } while (ctr < 300);
129
130 /* deactivate PHY reset */
131 gpio_set_value(PHY_GPIO, 1);
132
133 /* allow the PHY to stabilize and settle down */
134 ctr = 0;
135 do {
136 udelay(1000);
137 ctr++;
138 } while (ctr < 300);
139
140 /* ensure that the module is out of reset */
141 reset = readl(AM3517_IP_SW_RESET);
142 reset &= (~CPGMACSS_SW_RST);
143 writel(reset, AM3517_IP_SW_RESET);
144
145 /* Free requested GPIO */
146 gpio_free(PHY_GPIO);
147 }
148
149 return 0;
150 }
151
152 /*
153 * Routine: set_muxconf_regs
154 * Description: Setting up the configuration Mux registers specific to the
155 * hardware. Many pins need to be moved from protect to primary
156 * mode.
157 */
set_muxconf_regs(void)158 void set_muxconf_regs(void)
159 {
160 MUX_AM3517EVM();
161 }
162
163 #if defined(CONFIG_MMC)
board_mmc_init(bd_t * bis)164 int board_mmc_init(bd_t *bis)
165 {
166 return omap_mmc_init(0, 0, 0, -1, -1);
167 }
168 #endif
169
170 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
board_eth_init(bd_t * bis)171 int board_eth_init(bd_t *bis)
172 {
173 int rv, n = 0;
174
175 rv = cpu_eth_init(bis);
176 if (rv > 0)
177 n += rv;
178
179 rv = usb_eth_initialize(bis);
180 if (rv > 0)
181 n += rv;
182
183 return n;
184 }
185 #endif
186