Merge branch 'master' of git://git.denx.de/u-boot into master
[platform/kernel/u-boot.git] / board / logicpd / am3517evm / am3517evm.c
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  */
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
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  */
106 int misc_init_r(void)
107 {
108         volatile unsigned int ctr;
109         u32 reset;
110
111 #if !defined(CONFIG_DM_I2C)
112 #ifdef CONFIG_SYS_I2C_OMAP24XX
113         i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
114 #endif
115 #endif
116         omap_die_id_display();
117
118         am3517_evm_musb_init();
119
120         if (gpio_request(PHY_GPIO, "gpio_30") == 0) {
121                 /* activate PHY reset */
122                 gpio_direction_output(PHY_GPIO, 0);
123                 gpio_set_value(PHY_GPIO, 0);
124
125                 ctr  = 0;
126                 do {
127                         udelay(1000);
128                         ctr++;
129                 } while (ctr < 300);
130
131                 /* deactivate PHY reset */
132                 gpio_set_value(PHY_GPIO, 1);
133
134                 /* allow the PHY to stabilize and settle down */
135                 ctr = 0;
136                 do {
137                         udelay(1000);
138                         ctr++;
139                 } while (ctr < 300);
140
141                 /* ensure that the module is out of reset */
142                 reset = readl(AM3517_IP_SW_RESET);
143                 reset &= (~CPGMACSS_SW_RST);
144                 writel(reset, AM3517_IP_SW_RESET);
145
146                 /* Free requested GPIO */
147                 gpio_free(PHY_GPIO);
148         }
149
150         return 0;
151 }
152
153 /*
154  * Routine: set_muxconf_regs
155  * Description: Setting up the configuration Mux registers specific to the
156  *              hardware. Many pins need to be moved from protect to primary
157  *              mode.
158  */
159 void set_muxconf_regs(void)
160 {
161         MUX_AM3517EVM();
162 }
163
164 #if defined(CONFIG_MMC)
165 int board_mmc_init(bd_t *bis)
166 {
167         return omap_mmc_init(0, 0, 0, -1, -1);
168 }
169 #endif
170
171 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
172 int board_eth_init(bd_t *bis)
173 {
174         int rv, n = 0;
175
176         rv = cpu_eth_init(bis);
177         if (rv > 0)
178                 n += rv;
179
180         rv = usb_eth_initialize(bis);
181         if (rv > 0)
182                 n += rv;
183
184         return n;
185 }
186 #endif