LXR uboot/board/logicpd/am3517evm/am3517evm.c

   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
  33DECLARE_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 */
  42int 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
  54static struct musb_hdrc_config musb_config = {
  55        .multipoint     = 1,
  56        .dyn_fifo       = 1,
  57        .num_eps        = 16,
  58        .ram_bits       = 12,
  59};
  60
  61static 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
  67static 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
  81static 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 */
 103int 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        omap_die_id_display();
 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 */
 150void set_muxconf_regs(void)
 151{
 152        MUX_AM3517EVM();
 153}
 154
 155#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 156int 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)
 163int 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