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
  42 static struct gpio_led gpio_leds[] = {
  43         {
  44                 .name   = "sleep_ind",
  45                 .gpio   = RX51_GPIO_SLEEP_IND,
  46         },
  47 };
  48
  49 static struct gpio_led_platform_data gpio_led_info = {
  50         .leds           = gpio_leds,
  51         .num_leds       = ARRAY_SIZE(gpio_leds),
  52 };
  53
  54 static 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
  82 extern void __init rx51_peripherals_init(void);
  83
  84 #ifdef CONFIG_OMAP_MUX
  85 static struct omap_board_mux board_mux[] __initdata = {
  86         { .reg_offset = OMAP_MUX_TERMINATOR },
  87 };
  88 #endif
  89
  90 static struct omap_musb_board_data musb_board_data = {
  91         .interface_type         = MUSB_INTERFACE_ULPI,
  92         .mode                   = MUSB_OTG,
  93         .power                  = 0,
  94 };
  95
  96 static 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
 125 static void __init rx51_reserve(void)
 126 {
 127         omap_reserve();
 128 }
 129
 130 MACHINE_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         .handle_irq     = omap3_intc_handle_irq,
 138         .init_machine   = rx51_init,
 139         .init_late      = omap3430_init_late,
 140         .init_time      = omap3_sync32k_timer_init,
 141         .restart        = omap3xxx_restart,
 142 MACHINE_END