/* * 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/i2c/twl4030.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> #include "mmc-twl4030.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 struct twl4030_gpio_platform_data overo_gpio_data = { .gpio_base = OMAP_MAX_GPIO_LINES, .irq_base = TWL4030_GPIO_IRQ_BASE, .irq_end = TWL4030_GPIO_IRQ_END, }; static struct twl4030_platform_data overo_twldata = { .irq_base = TWL4030_IRQ_BASE, .irq_end = TWL4030_IRQ_END, .gpio = &overo_gpio_data, }; static struct i2c_board_info __initdata overo_i2c_boardinfo[] = { { I2C_BOARD_INFO("twl4030", 0x48), .flags = I2C_CLIENT_WAKE, .irq = INT_34XX_SYS_NIRQ, .platform_data = &overo_twldata, }, }; static int __init overo_i2c_init(void) { omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo, ARRAY_SIZE(overo_i2c_boardinfo)); /* 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 struct twl4030_hsmmc_info mmc[] __initdata = { { .mmc = 1, .wires = 4, .gpio_cd = -EINVAL, .gpio_wp = -EINVAL, }, { .mmc = 2, .wires = 4, .gpio_cd = -EINVAL, .gpio_wp = -EINVAL, }, {} /* Terminator */ }; 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(); twl4030_mmc_init(mmc); 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