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kernel/linux-imx6_3.14.28/arch/arm/mach-at91/board-snapper9260.c 4.71 KB
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  /*
   * linux/arch/arm/mach-at91/board-snapper9260.c
   *
   *  Copyright (C) 2010 Bluewater System Ltd
   *
   * Author: Andre Renaud <andre@bluewatersys.com>
   * Author: Ryan Mallon
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  
  #include <linux/init.h>
  #include <linux/gpio.h>
  #include <linux/platform_device.h>
  #include <linux/spi/spi.h>
  #include <linux/platform_data/pca953x.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  
  #include <mach/hardware.h>
  #include <mach/at91sam9_smc.h>
  
  #include "at91_aic.h"
  #include "board.h"
  #include "sam9_smc.h"
  #include "generic.h"
  
  #define SNAPPER9260_IO_EXP_GPIO(x)	(NR_BUILTIN_GPIO + (x))
  
  static void __init snapper9260_init_early(void)
  {
  	at91_initialize(18432000);
  }
  
  static struct at91_usbh_data __initdata snapper9260_usbh_data = {
  	.ports		= 2,
  	.vbus_pin	= {-EINVAL, -EINVAL},
  	.overcurrent_pin= {-EINVAL, -EINVAL},
  };
  
  static struct at91_udc_data __initdata snapper9260_udc_data = {
  	.vbus_pin		= SNAPPER9260_IO_EXP_GPIO(5),
  	.vbus_active_low	= 1,
  	.vbus_polled		= 1,
  	.pullup_pin		= -EINVAL,
  };
  
  static struct macb_platform_data snapper9260_macb_data = {
  	.phy_irq_pin	= -EINVAL,
  	.is_rmii	= 1,
  };
  
  static struct mtd_partition __initdata snapper9260_nand_partitions[] = {
  	{
  		.name	= "Preboot",
  		.offset	= 0,
  		.size	= SZ_128K,
  	},
  	{
  		.name	= "Bootloader",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= SZ_256K,
  	},
  	{
  		.name	= "Environment",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= SZ_128K,
  	},
  	{
  		.name	= "Kernel",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= SZ_4M,
  	},
  	{
  		.name	= "Filesystem",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= MTDPART_SIZ_FULL,
  	},
  };
  
  static struct atmel_nand_data __initdata snapper9260_nand_data = {
  	.ale		= 21,
  	.cle		= 22,
  	.rdy_pin	= AT91_PIN_PC13,
  	.parts		= snapper9260_nand_partitions,
  	.num_parts	= ARRAY_SIZE(snapper9260_nand_partitions),
  	.bus_width_16	= 0,
  	.enable_pin	= -EINVAL,
  	.det_pin	= -EINVAL,
  	.ecc_mode	= NAND_ECC_SOFT,
  };
  
  static struct sam9_smc_config __initdata snapper9260_nand_smc_config = {
  	.ncs_read_setup		= 0,
  	.nrd_setup		= 0,
  	.ncs_write_setup	= 0,
  	.nwe_setup		= 0,
  
  	.ncs_read_pulse		= 5,
  	.nrd_pulse		= 2,
  	.ncs_write_pulse	= 5,
  	.nwe_pulse		= 2,
  
  	.read_cycle		= 7,
  	.write_cycle		= 7,
  
  	.mode			= (AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
  				   AT91_SMC_EXNWMODE_DISABLE),
  	.tdf_cycles		= 1,
  };
  
  static struct pca953x_platform_data snapper9260_io_expander_data = {
  	.gpio_base		= SNAPPER9260_IO_EXP_GPIO(0),
  };
  
  static struct i2c_board_info __initdata snapper9260_i2c_devices[] = {
  	{
  		/* IO expander */
  		I2C_BOARD_INFO("max7312", 0x28),
  		.platform_data = &snapper9260_io_expander_data,
  	},
  	{
  		/* Audio codec */
  		I2C_BOARD_INFO("tlv320aic23", 0x1a),
  	},
  };
  
  static struct i2c_board_info __initdata snapper9260_i2c_isl1208 = {
  		/* RTC */
  		I2C_BOARD_INFO("isl1208", 0x6f),
  };
  
  static void __init snapper9260_add_device_nand(void)
  {
  	at91_set_A_periph(AT91_PIN_PC14, 0);
  	sam9_smc_configure(0, 3, &snapper9260_nand_smc_config);
  	at91_add_device_nand(&snapper9260_nand_data);
  }
  
  static void __init snapper9260_board_init(void)
  {
  	at91_add_device_i2c(snapper9260_i2c_devices,
  			    ARRAY_SIZE(snapper9260_i2c_devices));
  
  	snapper9260_i2c_isl1208.irq = gpio_to_irq(AT91_PIN_PA31);
  	i2c_register_board_info(0, &snapper9260_i2c_isl1208, 1);
  
  	/* Debug on ttyS0 */
  	at91_register_uart(0, 0, 0);
  
  	at91_register_uart(AT91SAM9260_ID_US0, 1,
  			   ATMEL_UART_CTS | ATMEL_UART_RTS);
  	at91_register_uart(AT91SAM9260_ID_US1, 2,
  			   ATMEL_UART_CTS | ATMEL_UART_RTS);
  	at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
  	at91_add_device_serial();
  	at91_add_device_usbh(&snapper9260_usbh_data);
  	at91_add_device_udc(&snapper9260_udc_data);
  	at91_add_device_eth(&snapper9260_macb_data);
  	at91_add_device_ssc(AT91SAM9260_ID_SSC, (ATMEL_SSC_TF | ATMEL_SSC_TK |
  						 ATMEL_SSC_TD | ATMEL_SSC_RD));
  	snapper9260_add_device_nand();
  }
  
  MACHINE_START(SNAPPER_9260, "Bluewater Systems Snapper 9260/9G20 module")
  	.init_time	= at91sam926x_pit_init,
  	.map_io		= at91_map_io,
  	.handle_irq	= at91_aic_handle_irq,
  	.init_early	= snapper9260_init_early,
  	.init_irq	= at91_init_irq_default,
  	.init_machine	= snapper9260_board_init,
  MACHINE_END