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 <init.h>
16 #include <net.h>
17 #include <ns16550.h>
18 #include <serial.h>
19 #include <asm/global_data.h>
20 #include <asm/io.h>
21 #include <asm/omap_musb.h>
22 #include <asm/arch/am35x_def.h>
23 #include <asm/arch/mem.h>
24 #include <asm/arch/mux.h>
25 #include <asm/arch/sys_proto.h>
26 #include <asm/arch/mmc_host_def.h>
27 #include <asm/arch/musb.h>
28 #include <asm/mach-types.h>
29 #include <linux/errno.h>
30 #include <asm/gpio.h>
31 #include <linux/usb/ch9.h>
32 #include <linux/usb/gadget.h>
33 #include <linux/usb/musb.h>
34 #include <i2c.h>
35 #include "am3517evm.h"
36
37 DECLARE_GLOBAL_DATA_PTR;
38
39 #define AM3517_IP_SW_RESET 0x48002598
40 #define CPGMACSS_SW_RST (1 << 1)
41 #define PHY_GPIO 30
42
43 #if defined(CONFIG_SPL_BUILD)
44 #if defined(CONFIG_SPL_OS_BOOT)
spl_start_uboot(void)45 int spl_start_uboot(void)
46 {
47 /* break into full u-boot on 'c' */
48 return serial_tstc() && serial_getc() == 'c';
49 }
50 #endif
51 #endif
52
53 /*
54 * Routine: board_init
55 * Description: Early hardware init.
56 */
board_init(void)57 int board_init(void)
58 {
59 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
60 /* board id for Linux */
61 gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM;
62 /* boot param addr */
63 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
64
65 return 0;
66 }
67
68 #ifdef CONFIG_USB_MUSB_AM35X
69 static struct musb_hdrc_config musb_config = {
70 .multipoint = 1,
71 .dyn_fifo = 1,
72 .num_eps = 16,
73 .ram_bits = 12,
74 };
75
76 static struct omap_musb_board_data musb_board_data = {
77 .set_phy_power = am35x_musb_phy_power,
78 .clear_irq = am35x_musb_clear_irq,
79 .reset = am35x_musb_reset,
80 };
81
82 static struct musb_hdrc_platform_data musb_plat = {
83 #if defined(CONFIG_USB_MUSB_HOST)
84 .mode = MUSB_HOST,
85 #elif defined(CONFIG_USB_MUSB_GADGET)
86 .mode = MUSB_PERIPHERAL,
87 #else
88 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
89 #endif
90 .config = &musb_config,
91 .power = 250,
92 .platform_ops = &am35x_ops,
93 .board_data = &musb_board_data,
94 };
95
am3517_evm_musb_init(void)96 static void am3517_evm_musb_init(void)
97 {
98 /*
99 * Set up USB clock/mode in the DEVCONF2 register.
100 * USB2.0 PHY reference clock is 13 MHz
101 */
102 clrsetbits_le32(&am35x_scm_general_regs->devconf2,
103 CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
104 CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
105 CONF2_VBDTCTEN | CONF2_DATPOL);
106
107 musb_register(&musb_plat, &musb_board_data,
108 (void *)AM35XX_IPSS_USBOTGSS_BASE);
109 }
110 #else
111 #define am3517_evm_musb_init() do {} while (0)
112 #endif
113
114 /*
115 * Routine: misc_init_r
116 * Description: Init i2c, ethernet, etc... (done here so udelay works)
117 */
misc_init_r(void)118 int misc_init_r(void)
119 {
120 u32 reset;
121
122 omap_die_id_display();
123
124 am3517_evm_musb_init();
125
126 /* ensure that the Ethernet module is out of reset */
127 reset = readl(AM3517_IP_SW_RESET);
128 reset &= (~CPGMACSS_SW_RST);
129 writel(reset, AM3517_IP_SW_RESET);
130
131 return 0;
132 }
133
134 /*
135 * Routine: set_muxconf_regs
136 * Description: Setting up the configuration Mux registers specific to the
137 * hardware. Many pins need to be moved from protect to primary
138 * mode.
139 */
set_muxconf_regs(void)140 void set_muxconf_regs(void)
141 {
142 MUX_AM3517EVM();
143 }
144
145
146 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
board_eth_init(struct bd_info * bis)147 int board_eth_init(struct bd_info *bis)
148 {
149 int rv, n = 0;
150
151 rv = cpu_eth_init(bis);
152 if (rv > 0)
153 n += rv;
154
155 rv = usb_eth_initialize(bis);
156 if (rv > 0)
157 n += rv;
158
159 return n;
160 }
161 #endif
162