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 <asm/io.h> 16 #include <asm/omap_musb.h> 17 #include <asm/arch/am35x_def.h> 18 #include <asm/arch/mem.h> 19 #include <asm/arch/mux.h> 20 #include <asm/arch/sys_proto.h> 21 #include <asm/arch/mmc_host_def.h> 22 #include <asm/arch/musb.h> 23 #include <asm/mach-types.h> 24 #include <asm/errno.h> 25 #include <asm/gpio.h> 26 #include <linux/usb/ch9.h> 27 #include <linux/usb/gadget.h> 28 #include <linux/usb/musb.h> 29 #include <i2c.h> 30 #include <netdev.h> 31 #include "am3517evm.h" 32 33 DECLARE_GLOBAL_DATA_PTR; 34 35 #define AM3517_IP_SW_RESET 0x48002598 36 #define CPGMACSS_SW_RST (1 << 1) 37 38 /* 39 * Routine: board_init 40 * Description: Early hardware init. 41 */ 42 int board_init(void) 43 { 44 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 45 /* board id for Linux */ 46 gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM; 47 /* boot param addr */ 48 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 49 50 return 0; 51 } 52 53 #ifdef CONFIG_USB_MUSB_AM35X 54 static struct musb_hdrc_config musb_config = { 55 .multipoint = 1, 56 .dyn_fifo = 1, 57 .num_eps = 16, 58 .ram_bits = 12, 59 }; 60 61 static struct omap_musb_board_data musb_board_data = { 62 .set_phy_power = am35x_musb_phy_power, 63 .clear_irq = am35x_musb_clear_irq, 64 .reset = am35x_musb_reset, 65 }; 66 67 static struct musb_hdrc_platform_data musb_plat = { 68 #if defined(CONFIG_USB_MUSB_HOST) 69 .mode = MUSB_HOST, 70 #elif defined(CONFIG_USB_MUSB_GADGET) 71 .mode = MUSB_PERIPHERAL, 72 #else 73 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET" 74 #endif 75 .config = &musb_config, 76 .power = 250, 77 .platform_ops = &am35x_ops, 78 .board_data = &musb_board_data, 79 }; 80 81 static void am3517_evm_musb_init(void) 82 { 83 /* 84 * Set up USB clock/mode in the DEVCONF2 register. 85 * USB2.0 PHY reference clock is 13 MHz 86 */ 87 clrsetbits_le32(&am35x_scm_general_regs->devconf2, 88 CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE, 89 CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | 90 CONF2_VBDTCTEN | CONF2_DATPOL); 91 92 musb_register(&musb_plat, &musb_board_data, 93 (void *)AM35XX_IPSS_USBOTGSS_BASE); 94 } 95 #else 96 #define am3517_evm_musb_init() do {} while (0) 97 #endif 98 99 /* 100 * Routine: misc_init_r 101 * Description: Init i2c, ethernet, etc... (done here so udelay works) 102 */ 103 int misc_init_r(void) 104 { 105 volatile unsigned int ctr; 106 u32 reset; 107 108 #ifdef CONFIG_SYS_I2C_OMAP34XX 109 i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); 110 #endif 111 112 dieid_num_r(); 113 114 am3517_evm_musb_init(); 115 116 /* activate PHY reset */ 117 gpio_direction_output(30, 0); 118 gpio_set_value(30, 0); 119 120 ctr = 0; 121 do { 122 udelay(1000); 123 ctr++; 124 } while (ctr < 300); 125 126 /* deactivate PHY reset */ 127 gpio_set_value(30, 1); 128 129 /* allow the PHY to stabilize and settle down */ 130 ctr = 0; 131 do { 132 udelay(1000); 133 ctr++; 134 } while (ctr < 300); 135 136 /* ensure that the module is out of reset */ 137 reset = readl(AM3517_IP_SW_RESET); 138 reset &= (~CPGMACSS_SW_RST); 139 writel(reset,AM3517_IP_SW_RESET); 140 141 return 0; 142 } 143 144 /* 145 * Routine: set_muxconf_regs 146 * Description: Setting up the configuration Mux registers specific to the 147 * hardware. Many pins need to be moved from protect to primary 148 * mode. 149 */ 150 void set_muxconf_regs(void) 151 { 152 MUX_AM3517EVM(); 153 } 154 155 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD) 156 int board_mmc_init(bd_t *bis) 157 { 158 return omap_mmc_init(0, 0, 0, -1, -1); 159 } 160 #endif 161 162 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET) 163 int board_eth_init(bd_t *bis) 164 { 165 int rv, n = 0; 166 167 rv = cpu_eth_init(bis); 168 if (rv > 0) 169 n += rv; 170 171 rv = usb_eth_initialize(bis); 172 if (rv > 0) 173 n += rv; 174 175 return n; 176 } 177 #endif 178