eba2645aeb
This patch adds minimal overo support. Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
243 lines
6.4 KiB
C
243 lines
6.4 KiB
C
/*
|
|
* board-overo.c (Gumstix Overo)
|
|
*
|
|
* Initial code: Steve Sakoman <steve@sakoman.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.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/nand.h>
|
|
#include <linux/mtd/partitions.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/flash.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include <mach/board-overo.h>
|
|
#include <mach/board.h>
|
|
#include <mach/common.h>
|
|
#include <mach/gpio.h>
|
|
#include <mach/gpmc.h>
|
|
#include <mach/hardware.h>
|
|
#include <mach/nand.h>
|
|
|
|
#define NAND_BLOCK_SIZE SZ_128K
|
|
#define GPMC_CS0_BASE 0x60
|
|
#define GPMC_CS_SIZE 0x30
|
|
|
|
static struct mtd_partition overo_nand_partitions[] = {
|
|
{
|
|
.name = "xloader",
|
|
.offset = 0, /* Offset = 0x00000 */
|
|
.size = 4 * NAND_BLOCK_SIZE,
|
|
.mask_flags = MTD_WRITEABLE
|
|
},
|
|
{
|
|
.name = "uboot",
|
|
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
|
|
.size = 14 * NAND_BLOCK_SIZE,
|
|
},
|
|
{
|
|
.name = "uboot environment",
|
|
.offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
|
|
.size = 2 * NAND_BLOCK_SIZE,
|
|
},
|
|
{
|
|
.name = "linux",
|
|
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
|
|
.size = 32 * NAND_BLOCK_SIZE,
|
|
},
|
|
{
|
|
.name = "rootfs",
|
|
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
|
|
.size = MTDPART_SIZ_FULL,
|
|
},
|
|
};
|
|
|
|
static struct omap_nand_platform_data overo_nand_data = {
|
|
.parts = overo_nand_partitions,
|
|
.nr_parts = ARRAY_SIZE(overo_nand_partitions),
|
|
.dma_channel = -1, /* disable DMA in OMAP NAND driver */
|
|
};
|
|
|
|
static struct resource overo_nand_resource = {
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device overo_nand_device = {
|
|
.name = "omap2-nand",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &overo_nand_data,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &overo_nand_resource,
|
|
};
|
|
|
|
|
|
static void __init overo_flash_init(void)
|
|
{
|
|
u8 cs = 0;
|
|
u8 nandcs = GPMC_CS_NUM + 1;
|
|
|
|
u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
|
|
|
|
/* find out the chip-select on which NAND exists */
|
|
while (cs < GPMC_CS_NUM) {
|
|
u32 ret = 0;
|
|
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
|
|
|
|
if ((ret & 0xC00) == 0x800) {
|
|
printk(KERN_INFO "Found NAND on CS%d\n", cs);
|
|
if (nandcs > GPMC_CS_NUM)
|
|
nandcs = cs;
|
|
}
|
|
cs++;
|
|
}
|
|
|
|
if (nandcs > GPMC_CS_NUM) {
|
|
printk(KERN_INFO "NAND: Unable to find configuration "
|
|
"in GPMC\n ");
|
|
return;
|
|
}
|
|
|
|
if (nandcs < GPMC_CS_NUM) {
|
|
overo_nand_data.cs = nandcs;
|
|
overo_nand_data.gpmc_cs_baseaddr = (void *)
|
|
(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
|
|
overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
|
|
|
|
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
|
|
if (platform_device_register(&overo_nand_device) < 0)
|
|
printk(KERN_ERR "Unable to register NAND device\n");
|
|
}
|
|
}
|
|
static struct omap_uart_config overo_uart_config __initdata = {
|
|
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
|
|
};
|
|
|
|
static int __init overo_i2c_init(void)
|
|
{
|
|
/* i2c2 pins are used for gpio */
|
|
omap_register_i2c_bus(3, 400, NULL, 0);
|
|
return 0;
|
|
}
|
|
|
|
static void __init overo_init_irq(void)
|
|
{
|
|
omap2_init_common_hw();
|
|
omap_init_irq();
|
|
omap_gpio_init();
|
|
}
|
|
|
|
static struct platform_device overo_lcd_device = {
|
|
.name = "overo_lcd",
|
|
.id = -1,
|
|
};
|
|
|
|
static struct omap_lcd_config overo_lcd_config __initdata = {
|
|
.ctrl_name = "internal",
|
|
};
|
|
|
|
static struct omap_board_config_kernel overo_config[] __initdata = {
|
|
{ OMAP_TAG_UART, &overo_uart_config },
|
|
{ OMAP_TAG_LCD, &overo_lcd_config },
|
|
};
|
|
|
|
static struct platform_device *overo_devices[] __initdata = {
|
|
&overo_lcd_device,
|
|
};
|
|
|
|
static void __init overo_init(void)
|
|
{
|
|
overo_i2c_init();
|
|
platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
|
|
omap_board_config = overo_config;
|
|
omap_board_config_size = ARRAY_SIZE(overo_config);
|
|
omap_serial_init();
|
|
overo_flash_init();
|
|
|
|
if ((gpio_request(OVERO_GPIO_W2W_NRESET,
|
|
"OVERO_GPIO_W2W_NRESET") == 0) &&
|
|
(gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
|
|
gpio_export(OVERO_GPIO_W2W_NRESET, 0);
|
|
gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
|
|
udelay(10);
|
|
gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
|
|
} else {
|
|
printk(KERN_ERR "could not obtain gpio for "
|
|
"OVERO_GPIO_W2W_NRESET\n");
|
|
}
|
|
|
|
if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
|
|
(gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
|
|
gpio_export(OVERO_GPIO_BT_XGATE, 0);
|
|
else
|
|
printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
|
|
|
|
if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
|
|
(gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
|
|
gpio_export(OVERO_GPIO_BT_NRESET, 0);
|
|
gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
|
|
mdelay(6);
|
|
gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
|
|
} else {
|
|
printk(KERN_ERR "could not obtain gpio for "
|
|
"OVERO_GPIO_BT_NRESET\n");
|
|
}
|
|
|
|
if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
|
|
(gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
|
|
gpio_export(OVERO_GPIO_USBH_CPEN, 0);
|
|
else
|
|
printk(KERN_ERR "could not obtain gpio for "
|
|
"OVERO_GPIO_USBH_CPEN\n");
|
|
|
|
if ((gpio_request(OVERO_GPIO_USBH_NRESET,
|
|
"OVERO_GPIO_USBH_NRESET") == 0) &&
|
|
(gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
|
|
gpio_export(OVERO_GPIO_USBH_NRESET, 0);
|
|
else
|
|
printk(KERN_ERR "could not obtain gpio for "
|
|
"OVERO_GPIO_USBH_NRESET\n");
|
|
}
|
|
|
|
static void __init overo_map_io(void)
|
|
{
|
|
omap2_set_globals_343x();
|
|
omap2_map_common_io();
|
|
}
|
|
|
|
MACHINE_START(OVERO, "Gumstix Overo")
|
|
.phys_io = 0x48000000,
|
|
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
|
|
.boot_params = 0x80000100,
|
|
.map_io = overo_map_io,
|
|
.init_irq = overo_init_irq,
|
|
.init_machine = overo_init,
|
|
.timer = &omap_timer,
|
|
MACHINE_END
|