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kernel/linux-imx6_3.14.28/arch/arm/mach-omap2/board-rx51.c 3.53 KB
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  /*
   * Board support file for Nokia N900 (aka RX-51).
   *
   * Copyright (C) 2007, 2008 Nokia
   * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
   * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/kernel.h>
  #include <linux/init.h>
  #include <linux/platform_device.h>
  #include <linux/delay.h>
  #include <linux/err.h>
  #include <linux/clk.h>
  #include <linux/io.h>
  #include <linux/gpio.h>
  #include <linux/leds.h>
  #include <linux/usb/phy.h>
  #include <linux/usb/musb.h>
  #include <linux/platform_data/spi-omap2-mcspi.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/map.h>
  
  #include <linux/omap-dma.h>
  
  #include "common.h"
  #include "mux.h"
  #include "gpmc.h"
  #include "pm.h"
  #include "soc.h"
  #include "sdram-nokia.h"
  #include "omap-secure.h"
  
  #define RX51_GPIO_SLEEP_IND 162
  
  static struct gpio_led gpio_leds[] = {
  	{
  		.name	= "sleep_ind",
  		.gpio	= RX51_GPIO_SLEEP_IND,
  	},
  };
  
  static struct gpio_led_platform_data gpio_led_info = {
  	.leds		= gpio_leds,
  	.num_leds	= ARRAY_SIZE(gpio_leds),
  };
  
  static struct platform_device leds_gpio = {
  	.name	= "leds-gpio",
  	.id	= -1,
  	.dev	= {
  		.platform_data	= &gpio_led_info,
  	},
  };
  
  /*
   * cpuidle C-states definition for rx51.
   *
   * The 'exit_latency' field is the sum of sleep
   * and wake-up latencies.
  
      ---------------------------------------------
     | state |  exit_latency  |  target_residency  |
      ---------------------------------------------
     |  C1   |    110 + 162   |            5       |
     |  C2   |    106 + 180   |          309       |
     |  C3   |    107 + 410   |        46057       |
     |  C4   |    121 + 3374  |        46057       |
     |  C5   |    855 + 1146  |        46057       |
     |  C6   |   7580 + 4134  |       484329       |
     |  C7   |   7505 + 15274 |       484329       |
      ---------------------------------------------
  
  */
  
  extern void __init rx51_peripherals_init(void);
  
  #ifdef CONFIG_OMAP_MUX
  static struct omap_board_mux board_mux[] __initdata = {
  	{ .reg_offset = OMAP_MUX_TERMINATOR },
  };
  #endif
  
  static struct omap_musb_board_data musb_board_data = {
  	.interface_type		= MUSB_INTERFACE_ULPI,
  	.mode			= MUSB_OTG,
  	.power			= 0,
  };
  
  static void __init rx51_init(void)
  {
  	struct omap_sdrc_params *sdrc_params;
  
  	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
  	omap_serial_init();
  
  	sdrc_params = nokia_get_sdram_timings();
  	omap_sdrc_init(sdrc_params, sdrc_params);
  
  	usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
  	usb_musb_init(&musb_board_data);
  	rx51_peripherals_init();
  
  	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
  #ifdef CONFIG_ARM_ERRATA_430973
  		pr_info("RX-51: Enabling ARM errata 430973 workaround
  ");
  		/* set IBE to 1 */
  		rx51_secure_update_aux_cr(BIT(6), 0);
  #endif
  	}
  
  	/* Ensure SDRC pins are mux'd for self-refresh */
  	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
  	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
  
  	platform_device_register(&leds_gpio);
  }
  
  static void __init rx51_reserve(void)
  {
  	omap_reserve();
  }
  
  MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
  	/* Maintainer: Lauri Leukkunen <lauri.leukkunen@nokia.com> */
  	.atag_offset	= 0x100,
  	.reserve	= rx51_reserve,
  	.map_io		= omap3_map_io,
  	.init_early	= omap3430_init_early,
  	.init_irq	= omap3_init_irq,
  	.handle_irq	= omap3_intc_handle_irq,
  	.init_machine	= rx51_init,
  	.init_late	= omap3430_init_late,
  	.init_time	= omap3_sync32k_timer_init,
  	.restart	= omap3xxx_restart,
  MACHINE_END