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 <net.h>
  16 #include <ns16550.h>
  17 #include <serial.h>
  18 #include <asm/io.h>
  19 #include <asm/omap_musb.h>
  20 #include <asm/arch/am35x_def.h>
  21 #include <asm/arch/mem.h>
  22 #include <asm/arch/mux.h>
  23 #include <asm/arch/sys_proto.h>
  24 #include <asm/arch/mmc_host_def.h>
  25 #include <asm/arch/musb.h>
  26 #include <asm/mach-types.h>
  27 #include <linux/errno.h>
  28 #include <asm/gpio.h>
  29 #include <linux/usb/ch9.h>
  30 #include <linux/usb/gadget.h>
  31 #include <linux/usb/musb.h>
  32 #include <i2c.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 #if defined(CONFIG_SPL_BUILD)
  42 #if defined(CONFIG_SPL_OS_BOOT)
  43 int spl_start_uboot(void)
  44 {
  45         /* break into full u-boot on 'c' */
  46         return serial_tstc() && serial_getc() == 'c';
  47 }
  48 #endif
  49 #endif
  50
  51 /*
  52  * Routine: board_init
  53  * Description: Early hardware init.
  54  */
  55 int board_init(void)
  56 {
  57         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  58         /* board id for Linux */
  59         gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM;
  60         /* boot param addr */
  61         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  62
  63         return 0;
  64 }
  65
  66 #ifdef CONFIG_USB_MUSB_AM35X
  67 static struct musb_hdrc_config musb_config = {
  68         .multipoint     = 1,
  69         .dyn_fifo       = 1,
  70         .num_eps        = 16,
  71         .ram_bits       = 12,
  72 };
  73
  74 static struct omap_musb_board_data musb_board_data = {
  75         .set_phy_power          = am35x_musb_phy_power,
  76         .clear_irq              = am35x_musb_clear_irq,
  77         .reset                  = am35x_musb_reset,
  78 };
  79
  80 static struct musb_hdrc_platform_data musb_plat = {
  81 #if defined(CONFIG_USB_MUSB_HOST)
  82         .mode           = MUSB_HOST,
  83 #elif defined(CONFIG_USB_MUSB_GADGET)
  84         .mode           = MUSB_PERIPHERAL,
  85 #else
  86 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
  87 #endif
  88         .config         = &musb_config,
  89         .power          = 250,
  90         .platform_ops   = &am35x_ops,
  91         .board_data     = &musb_board_data,
  92 };
  93
  94 static void am3517_evm_musb_init(void)
  95 {
  96         /*
  97          * Set up USB clock/mode in the DEVCONF2 register.
  98          * USB2.0 PHY reference clock is 13 MHz
  99          */
 100         clrsetbits_le32(&am35x_scm_general_regs->devconf2,
 101                         CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
 102                         CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
 103                         CONF2_VBDTCTEN | CONF2_DATPOL);
 104
 105         musb_register(&musb_plat, &musb_board_data,
 106                         (void *)AM35XX_IPSS_USBOTGSS_BASE);
 107 }
 108 #else
 109 #define am3517_evm_musb_init() do {} while (0)
 110 #endif
 111
 112 /*
 113  * Routine: misc_init_r
 114  * Description: Init i2c, ethernet, etc... (done here so udelay works)
 115  */
 116 int misc_init_r(void)
 117 {
 118         u32 reset;
 119
 120         omap_die_id_display();
 121
 122         am3517_evm_musb_init();
 123
 124         /* ensure that the Ethernet module is out of reset */
 125         reset = readl(AM3517_IP_SW_RESET);
 126         reset &= (~CPGMACSS_SW_RST);
 127         writel(reset, AM3517_IP_SW_RESET);
 128
 129         return 0;
 130 }
 131
 132 /*
 133  * Routine: set_muxconf_regs
 134  * Description: Setting up the configuration Mux registers specific to the
 135  *              hardware. Many pins need to be moved from protect to primary
 136  *              mode.
 137  */
 138 void set_muxconf_regs(void)
 139 {
 140         MUX_AM3517EVM();
 141 }
 142
 143
 144 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
 145 int board_eth_init(bd_t *bis)
 146 {
 147         int rv, n = 0;
 148
 149         rv = cpu_eth_init(bis);
 150         if (rv > 0)
 151                 n += rv;
 152
 153         rv = usb_eth_initialize(bis);
 154         if (rv > 0)
 155                 n += rv;
 156
 157         return n;
 158 }
 159 #endif