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linux-next/arch/arm/mach-at91/board-stamp9g20.c
Jean-Christophe PLAGNIOL-VILLARD 3d51f259e8 at91: drop boot_params and PLAT_PHYS_OFFSET 
select ARM_PATCH_PHYS_VIRT
as with ARM_PATCH_PHYS_VIRT you can patch boot_params at runtime or any recent
bootloader will provide a valid atags pointer in r2

as point out by Russell on AT91 we never use XIP
so se do not need PLAT_PHYS_OFFSET

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-25 23:04:35 +08:00

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/*
* Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
* taskit GmbH
*
* 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/mm.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/w1-gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/board.h>
#include <mach/at91sam9_smc.h>
#include "sam9_smc.h"
#include "generic.h"
void __init stamp9g20_init_early(void)
{
/* Initialize processor: 18.432 MHz crystal */
at91sam9260_initialize(18432000);
/* DGBU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
/* set serial console to ttyS0 (ie, DBGU) */
at91_set_serial_console(0);
}
static void __init stamp9g20evb_init_early(void)
{
stamp9g20_init_early();
/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
| ATMEL_UART_DTR | ATMEL_UART_DSR
| ATMEL_UART_DCD | ATMEL_UART_RI);
}
static void __init portuxg20_init_early(void)
{
stamp9g20_init_early();
/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
| ATMEL_UART_DTR | ATMEL_UART_DSR
| ATMEL_UART_DCD | ATMEL_UART_RI);
/* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
/* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
/* USART4 on ttyS5. (Rx, Tx only) */
at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
/* USART5 on ttyS6. (Rx, Tx only) */
at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
}
static void __init init_irq(void)
{
at91sam9260_init_interrupts(NULL);
}
/*
* NAND flash
*/
static struct atmel_nand_data __initdata nand_data = {
.ale = 21,
.cle = 22,
.rdy_pin = AT91_PIN_PC13,
.enable_pin = AT91_PIN_PC14,
.bus_width_16 = 0,
};
static struct sam9_smc_config __initdata nand_smc_config = {
.ncs_read_setup = 0,
.nrd_setup = 2,
.ncs_write_setup = 0,
.nwe_setup = 2,
.ncs_read_pulse = 4,
.nrd_pulse = 4,
.ncs_write_pulse = 4,
.nwe_pulse = 4,
.read_cycle = 7,
.write_cycle = 7,
.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
.tdf_cycles = 3,
};
static void __init add_device_nand(void)
{
/* configure chip-select 3 (NAND) */
sam9_smc_configure(3, &nand_smc_config);
at91_add_device_nand(&nand_data);
}
/*
* MCI (SD/MMC)
* det_pin, wp_pin and vcc_pin are not connected
*/
#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
static struct mci_platform_data __initdata mmc_data = {
.slot[0] = {
.bus_width = 4,
},
};
#else
static struct at91_mmc_data __initdata mmc_data = {
.slot_b = 0,
.wire4 = 1,
};
#endif
/*
* USB Host port
*/
static struct at91_usbh_data __initdata usbh_data = {
.ports = 2,
};
/*
* USB Device port
*/
static struct at91_udc_data __initdata portuxg20_udc_data = {
.vbus_pin = AT91_PIN_PC7,
.pullup_pin = 0, /* pull-up driven by UDC */
};
static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
.vbus_pin = AT91_PIN_PA22,
.pullup_pin = 0, /* pull-up driven by UDC */
};
/*
* MACB Ethernet device
*/
static struct at91_eth_data __initdata macb_data = {
.phy_irq_pin = AT91_PIN_PA28,
.is_rmii = 1,
};
/*
* LEDs
*/
static struct gpio_led portuxg20_leds[] = {
{
.name = "LED2",
.gpio = AT91_PIN_PC5,
.default_trigger = "none",
}, {
.name = "LED3",
.gpio = AT91_PIN_PC4,
.default_trigger = "none",
}, {
.name = "LED4",
.gpio = AT91_PIN_PC10,
.default_trigger = "heartbeat",
}
};
static struct gpio_led stamp9g20evb_leds[] = {
{
.name = "D8",
.gpio = AT91_PIN_PB18,
.active_low = 1,
.default_trigger = "none",
}, {
.name = "D9",
.gpio = AT91_PIN_PB19,
.active_low = 1,
.default_trigger = "none",
}, {
.name = "D10",
.gpio = AT91_PIN_PB20,
.active_low = 1,
.default_trigger = "heartbeat",
}
};
/*
* SPI devices
*/
static struct spi_board_info portuxg20_spi_devices[] = {
{
.modalias = "spidev",
.chip_select = 0,
.max_speed_hz = 1 * 1000 * 1000,
.bus_num = 0,
}, {
.modalias = "spidev",
.chip_select = 0,
.max_speed_hz = 1 * 1000 * 1000,
.bus_num = 1,
},
};
/*
* Dallas 1-Wire
*/
static struct w1_gpio_platform_data w1_gpio_pdata = {
.pin = AT91_PIN_PA29,
.is_open_drain = 1,
};
static struct platform_device w1_device = {
.name = "w1-gpio",
.id = -1,
.dev.platform_data = &w1_gpio_pdata,
};
void add_w1(void)
{
at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
at91_set_multi_drive(w1_gpio_pdata.pin, 1);
platform_device_register(&w1_device);
}
void __init stamp9g20_board_init(void)
{
/* Serial */
at91_add_device_serial();
/* NAND */
add_device_nand();
/* MMC */
#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
at91_add_device_mci(0, &mmc_data);
#else
at91_add_device_mmc(0, &mmc_data);
#endif
/* W1 */
add_w1();
}
static void __init portuxg20_board_init(void)
{
stamp9g20_board_init();
/* USB Host */
at91_add_device_usbh(&usbh_data);
/* USB Device */
at91_add_device_udc(&portuxg20_udc_data);
/* Ethernet */
at91_add_device_eth(&macb_data);
/* I2C */
at91_add_device_i2c(NULL, 0);
/* SPI */
at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
/* LEDs */
at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
}
static void __init stamp9g20evb_board_init(void)
{
stamp9g20_board_init();
/* USB Host */
at91_add_device_usbh(&usbh_data);
/* USB Device */
at91_add_device_udc(&stamp9g20evb_udc_data);
/* Ethernet */
at91_add_device_eth(&macb_data);
/* I2C */
at91_add_device_i2c(NULL, 0);
/* LEDs */
at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
}
MACHINE_START(PORTUXG20, "taskit PortuxG20")
/* Maintainer: taskit GmbH */
.timer = &at91sam926x_timer,
.map_io = at91sam9260_map_io,
.init_early = portuxg20_init_early,
.init_irq = init_irq,
.init_machine = portuxg20_board_init,
MACHINE_END
MACHINE_START(STAMP9G20, "taskit Stamp9G20")
/* Maintainer: taskit GmbH */
.timer = &at91sam926x_timer,
.map_io = at91sam9260_map_io,
.init_early = stamp9g20evb_init_early,
.init_irq = init_irq,
.init_machine = stamp9g20evb_board_init,
MACHINE_END
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