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 187