1 /* 2 * am3517evm.c - board file for TI's AM3517 family of devices. 3 * 4 * Author: Vaibhav Hiremath <hvaibhav@ti.com> 5 * 6 * Based on ti/evm/evm.c 7 * 8 * Copyright (C) 2010 9 * Texas Instruments Incorporated - http://www.ti.com/ 10 * 11 * SPDX-License-Identifier: GPL-2.0+ 12 */ 13 14 #include <common.h> 15 #include <dm.h> 16 #include <ns16550.h> 17 #include <asm/io.h> 18 #include <asm/omap_musb.h> 19 #include <asm/arch/am35x_def.h> 20 #include <asm/arch/mem.h> 21 #include <asm/arch/mux.h> 22 #include <asm/arch/sys_proto.h> 23 #include <asm/arch/mmc_host_def.h> 24 #include <asm/arch/musb.h> 25 #include <asm/mach-types.h> 26 #include <linux/errno.h> 27 #include <asm/gpio.h> 28 #include <linux/usb/ch9.h> 29 #include <linux/usb/gadget.h> 30 #include <linux/usb/musb.h> 31 #include <i2c.h> 32 #include <netdev.h> 33 #include "am3517evm.h" 34 35 DECLARE_GLOBAL_DATA_PTR; 36 37 #define AM3517_IP_SW_RESET 0x48002598 38 #define CPGMACSS_SW_RST (1 << 1) 39 #define PHY_GPIO 30 40 41 /* This is only needed until SPL gets OF support */ 42 #ifdef CONFIG_SPL_BUILD 43 static const struct ns16550_platdata am3517_serial = { 44 .base = OMAP34XX_UART3, 45 .reg_shift = 2, 46 .clock = V_NS16550_CLK, 47 .fcr = UART_FCR_DEFVAL, 48 }; 49 50 U_BOOT_DEVICE(am3517_uart) = { 51 "ns16550_serial", 52 &am3517_serial 53 }; 54 #endif 55 56 /* 57 * Routine: board_init 58 * Description: Early hardware init. 59 */ 60 int board_init(void) 61 { 62 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 63 /* board id for Linux */ 64 gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM; 65 /* boot param addr */ 66 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 67 68 return 0; 69 } 70 71 #ifdef CONFIG_USB_MUSB_AM35X 72 static struct musb_hdrc_config musb_config = { 73 .multipoint = 1, 74 .dyn_fifo = 1, 75 .num_eps = 16, 76 .ram_bits = 12, 77 }; 78 79 static struct omap_musb_board_data musb_board_data = { 80 .set_phy_power = am35x_musb_phy_power, 81 .clear_irq = am35x_musb_clear_irq, 82 .reset = am35x_musb_reset, 83 }; 84 85 static struct musb_hdrc_platform_data musb_plat = { 86 #if defined(CONFIG_USB_MUSB_HOST) 87 .mode = MUSB_HOST, 88 #elif defined(CONFIG_USB_MUSB_GADGET) 89 .mode = MUSB_PERIPHERAL, 90 #else 91 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET" 92 #endif 93 .config = &musb_config, 94 .power = 250, 95 .platform_ops = &am35x_ops, 96 .board_data = &musb_board_data, 97 }; 98 99 static void am3517_evm_musb_init(void) 100 { 101 /* 102 * Set up USB clock/mode in the DEVCONF2 register. 103 * USB2.0 PHY reference clock is 13 MHz 104 */ 105 clrsetbits_le32(&am35x_scm_general_regs->devconf2, 106 CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE, 107 CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | 108 CONF2_VBDTCTEN | CONF2_DATPOL); 109 110 musb_register(&musb_plat, &musb_board_data, 111 (void *)AM35XX_IPSS_USBOTGSS_BASE); 112 } 113 #else 114 #define am3517_evm_musb_init() do {} while (0) 115 #endif 116 117 /* 118 * Routine: misc_init_r 119 * Description: Init i2c, ethernet, etc... (done here so udelay works) 120 */ 121 int misc_init_r(void) 122 { 123 volatile unsigned int ctr; 124 u32 reset; 125 126 #ifdef CONFIG_SYS_I2C_OMAP24XX 127 i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); 128 #endif 129 130 omap_die_id_display(); 131 132 am3517_evm_musb_init(); 133 134 if (gpio_request(PHY_GPIO, "gpio_30") == 0) { 135 /* activate PHY reset */ 136 gpio_direction_output(PHY_GPIO, 0); 137 gpio_set_value(PHY_GPIO, 0); 138 139 ctr = 0; 140 do { 141 udelay(1000); 142 ctr++; 143 } while (ctr < 300); 144 145 /* deactivate PHY reset */ 146 gpio_set_value(PHY_GPIO, 1); 147 148 /* allow the PHY to stabilize and settle down */ 149 ctr = 0; 150 do { 151 udelay(1000); 152 ctr++; 153 } while (ctr < 300); 154 155 /* ensure that the module is out of reset */ 156 reset = readl(AM3517_IP_SW_RESET); 157 reset &= (~CPGMACSS_SW_RST); 158 writel(reset, AM3517_IP_SW_RESET); 159 160 /* Free requested GPIO */ 161 gpio_free(PHY_GPIO); 162 } 163 164 return 0; 165 } 166 167 /* 168 * Routine: set_muxconf_regs 169 * Description: Setting up the configuration Mux registers specific to the 170 * hardware. Many pins need to be moved from protect to primary 171 * mode. 172 */ 173 void set_muxconf_regs(void) 174 { 175 MUX_AM3517EVM(); 176 } 177 178 #if defined(CONFIG_MMC) 179 int board_mmc_init(bd_t *bis) 180 { 181 return omap_mmc_init(0, 0, 0, -1, -1); 182 } 183 #endif 184 185 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET) 186 int board_eth_init(bd_t *bis) 187 { 188 int rv, n = 0; 189 190 rv = cpu_eth_init(bis); 191 if (rv > 0) 192 n += rv; 193 194 rv = usb_eth_initialize(bis); 195 if (rv > 0) 196 n += rv; 197 198 return n; 199 } 200 #endif 201