linux_dsm_epyc7002/arch/arm/mach-at91/board-snapper9260.c

/*
 * linux/arch/arm/mach-at91/board-snapper9260.c
 *
 *  Copyright (C) 2010 Bluewater System Ltd
 *
 * Author: Andre Renaud <andre@bluewatersys.com>
 * Author: Ryan Mallon  <ryan@bluewatersys.com>
 *
 * 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/i2c/pca953x.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/hardware.h>
#include <mach/board.h>
#include <mach/at91sam9_smc.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)
{
	at91sam9260_initialize(18432000);

	/* Debug on ttyS0 */
	at91_register_uart(0, 0, 0);
	at91_set_serial_console(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);
}

static void __init snapper9260_init_irq(void)
{
	at91sam9260_init_interrupts(NULL);
}

static struct at91_usbh_data __initdata snapper9260_usbh_data = {
	.ports		= 2,
};

static struct at91_udc_data __initdata snapper9260_udc_data = {
	.vbus_pin		= SNAPPER9260_IO_EXP_GPIO(5),
	.vbus_active_low	= 1,
	.vbus_polled		= 1,
};

static struct at91_eth_data snapper9260_macb_data = {
	.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 mtd_partition * __init
snapper9260_nand_partition_info(int size, int *num_partitions)
{
	*num_partitions = ARRAY_SIZE(snapper9260_nand_partitions);
	return snapper9260_nand_partitions;
}

static struct atmel_nand_data __initdata snapper9260_nand_data = {
	.ale		= 21,
	.cle		= 22,
	.rdy_pin	= AT91_PIN_PC13,
	.partition_info	= snapper9260_nand_partition_info,
	.bus_width_16	= 0,
};

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),
	},
	{
		/* RTC */
		I2C_BOARD_INFO("isl1208", 0x6f),
		.irq = gpio_to_irq(AT91_PIN_PA31),
	},
};

static void __init snapper9260_add_device_nand(void)
{
	at91_set_A_periph(AT91_PIN_PC14, 0);
	sam9_smc_configure(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));
	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")
	.timer		= &at91sam926x_timer,
	.map_io		= at91sam9260_map_io,
	.init_early	= snapper9260_init_early,
	.init_irq	= snapper9260_init_irq,
	.init_machine	= snapper9260_board_init,
MACHINE_END