LXR linux/arch/arm/mach-omap2/board-rx51.c

   1/*
   2 * Board support file for Nokia N900 (aka RX-51).
   3 *
   4 * Copyright (C) 2007, 2008 Nokia
   5 * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
   6 * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12
  13#include <linux/kernel.h>
  14#include <linux/init.h>
  15#include <linux/platform_device.h>
  16#include <linux/delay.h>
  17#include <linux/err.h>
  18#include <linux/clk.h>
  19#include <linux/io.h>
  20#include <linux/gpio.h>
  21#include <linux/leds.h>
  22#include <linux/usb/phy.h>
  23#include <linux/usb/musb.h>
  24#include <linux/platform_data/spi-omap2-mcspi.h>
  25
  26#include <asm/mach-types.h>
  27#include <asm/mach/arch.h>
  28#include <asm/mach/map.h>
  29
  30#include <linux/omap-dma.h>
  31
  32#include "common.h"
  33#include "mux.h"
  34#include "gpmc.h"
  35#include "pm.h"
  36#include "soc.h"
  37#include "sdram-nokia.h"
  38#include "omap-secure.h"
  39
  40#define RX51_GPIO_SLEEP_IND 162
  41
  42static struct gpio_led gpio_leds[] = {
  43        {
  44                .name   = "sleep_ind",
  45                .gpio   = RX51_GPIO_SLEEP_IND,
  46        },
  47};
  48
  49static struct gpio_led_platform_data gpio_led_info = {
  50        .leds           = gpio_leds,
  51        .num_leds       = ARRAY_SIZE(gpio_leds),
  52};
  53
  54static struct platform_device leds_gpio = {
  55        .name   = "leds-gpio",
  56        .id     = -1,
  57        .dev    = {
  58                .platform_data  = &gpio_led_info,
  59        },
  60};
  61
  62/*
  63 * cpuidle C-states definition for rx51.
  64 *
  65 * The 'exit_latency' field is the sum of sleep
  66 * and wake-up latencies.
  67
  68    ---------------------------------------------
  69   | state |  exit_latency  |  target_residency  |
  70    ---------------------------------------------
  71   |  C1   |    110 + 162   |            5       |
  72   |  C2   |    106 + 180   |          309       |
  73   |  C3   |    107 + 410   |        46057       |
  74   |  C4   |    121 + 3374  |        46057       |
  75   |  C5   |    855 + 1146  |        46057       |
  76   |  C6   |   7580 + 4134  |       484329       |
  77   |  C7   |   7505 + 15274 |       484329       |
  78    ---------------------------------------------
  79
  80*/
  81
  82extern void __init rx51_peripherals_init(void);
  83
  84#ifdef CONFIG_OMAP_MUX
  85static struct omap_board_mux board_mux[] __initdata = {
  86        { .reg_offset = OMAP_MUX_TERMINATOR },
  87};
  88#endif
  89
  90static struct omap_musb_board_data musb_board_data = {
  91        .interface_type         = MUSB_INTERFACE_ULPI,
  92        .mode                   = MUSB_OTG,
  93        .power                  = 0,
  94};
  95
  96static void __init rx51_init(void)
  97{
  98        struct omap_sdrc_params *sdrc_params;
  99
 100        omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 101        omap_serial_init();
 102
 103        sdrc_params = nokia_get_sdram_timings();
 104        omap_sdrc_init(sdrc_params, sdrc_params);
 105
 106        usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
 107        usb_musb_init(&musb_board_data);
 108        rx51_peripherals_init();
 109
 110        if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
 111#ifdef CONFIG_ARM_ERRATA_430973
 112                pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
 113                /* set IBE to 1 */
 114                rx51_secure_update_aux_cr(BIT(6), 0);
 115#endif
 116        }
 117
 118        /* Ensure SDRC pins are mux'd for self-refresh */
 119        omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 120        omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 121
 122        platform_device_register(&leds_gpio);
 123}
 124
 125static void __init rx51_reserve(void)
 126{
 127        omap_reserve();
 128}
 129
 130MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
 131        /* Maintainer: Lauri Leukkunen <lauri.leukkunen@nokia.com> */
 132        .atag_offset    = 0x100,
 133        .reserve        = rx51_reserve,
 134        .map_io         = omap3_map_io,
 135        .init_early     = omap3430_init_early,
 136        .init_irq       = omap3_init_irq,
 137        .init_machine   = rx51_init,
 138        .init_late      = omap3430_init_late,
 139        .init_time      = omap_init_time,
 140        .restart        = omap3xxx_restart,
 141MACHINE_END
 142