arch/arm/mach-omap2/board-am3517crane.c

   1 /*
   2  * Support for AM3517/05 Craneboard
   3  * http://www.mistralsolutions.com/products/craneboard.php
   4  *
   5  * Copyright (C) 2010 Mistral Solutions Pvt Ltd. <www.mistralsolutions.com>
   6  * Author: R.Srinath <srinath@mistralsolutions.com>
   7  *
   8  * Based on mach-omap2/board-am3517evm.c
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as  published by the
  12  * Free Software Foundation version 2.
  13  *
  14  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
  15  * whether express or implied; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/gpio.h>
  23
  24 #include <mach/hardware.h>
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28
  29 #include <plat/board.h>
  30 #include <plat/common.h>
  31 #include <plat/usb.h>
  32
  33 #include "mux.h"
  34 #include "control.h"
  35
  36 #define GPIO_USB_POWER          35
  37 #define GPIO_USB_NRESET         38
  38
  39
  40 /* Board initialization */
  41 static struct omap_board_config_kernel am3517_crane_config[] __initdata = {
  42 };
  43
  44 #ifdef CONFIG_OMAP_MUX
  45 static struct omap_board_mux board_mux[] __initdata = {
  46         { .reg_offset = OMAP_MUX_TERMINATOR },
  47 };
  48 #else
  49 #define board_mux       NULL
  50 #endif
  51
  52 static void __init am3517_crane_init_early(void)
  53 {
  54         omap_board_config = am3517_crane_config;
  55         omap_board_config_size = ARRAY_SIZE(am3517_crane_config);
  56
  57         omap2_init_common_infrastructure();
  58         omap2_init_common_devices(NULL, NULL);
  59 }
  60
  61 static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = {
  62         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
  63         .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,
  64         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
  65
  66         .phy_reset  = true,
  67         .reset_gpio_port[0]  = GPIO_USB_NRESET,
  68         .reset_gpio_port[1]  = -EINVAL,
  69         .reset_gpio_port[2]  = -EINVAL
  70 };
  71
  72 static void __init am3517_crane_init(void)
  73 {
  74         int ret;
  75
  76         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
  77         omap_serial_init();
  78
  79         /* Configure GPIO for EHCI port */
  80         if (omap_mux_init_gpio(GPIO_USB_NRESET, OMAP_PIN_OUTPUT)) {
  81                 pr_err("Can not configure mux for GPIO_USB_NRESET %d\n",
  82                         GPIO_USB_NRESET);
  83                 return;
  84         }
  85
  86         if (omap_mux_init_gpio(GPIO_USB_POWER, OMAP_PIN_OUTPUT)) {
  87                 pr_err("Can not configure mux for GPIO_USB_POWER %d\n",
  88                         GPIO_USB_POWER);
  89                 return;
  90         }
  91
  92         ret = gpio_request(GPIO_USB_POWER, "usb_ehci_enable");
  93         if (ret < 0) {
  94                 pr_err("Can not request GPIO %d\n", GPIO_USB_POWER);
  95                 return;
  96         }
  97
  98         ret = gpio_direction_output(GPIO_USB_POWER, 1);
  99         if (ret < 0) {
 100                 gpio_free(GPIO_USB_POWER);
 101                 pr_err("Unable to initialize EHCI power\n");
 102                 return;
 103         }
 104
 105         usb_ehci_init(&ehci_pdata);
 106 }
 107
 108 MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")
 109         .boot_params    = 0x80000100,
 110         .reserve        = omap_reserve,
 111         .map_io         = omap3_map_io,
 112         .init_early     = am3517_crane_init_early,
 113         .init_irq       = omap_init_irq,
 114         .init_machine   = am3517_crane_init,
 115         .timer          = &omap_timer,
 116 MACHINE_END