1/* 2 * linux/arch/arm/mach-at91/board-sam9261ek.c 3 * 4 * Copyright (C) 2005 SAN People 5 * Copyright (C) 2006 Atmel 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22#include <linux/types.h> 23#include <linux/init.h> 24#include <linux/mm.h> 25#include <linux/module.h> 26#include <linux/platform_device.h> 27#include <linux/spi/spi.h> 28#include <linux/spi/ads7846.h> 29#include <linux/dm9000.h> 30 31#include <asm/hardware.h> 32#include <asm/setup.h> 33#include <asm/mach-types.h> 34#include <asm/irq.h> 35 36#include <asm/mach/arch.h> 37#include <asm/mach/map.h> 38#include <asm/mach/irq.h> 39 40#include <asm/arch/board.h> 41#include <asm/arch/gpio.h> 42#include <asm/arch/at91sam926x_mc.h> 43 44#include "generic.h" 45 46 47/* 48 * Serial port configuration. 49 * 0 .. 2 = USART0 .. USART2 50 * 3 = DBGU 51 */ 52static struct at91_uart_config __initdata ek_uart_config = { 53 .console_tty = 0, /* ttyS0 */ 54 .nr_tty = 1, 55 .tty_map = { 3, -1, -1, -1 } /* ttyS0, ..., ttyS3 */ 56}; 57 58static void __init ek_map_io(void) 59{ 60 /* Initialize processor: 18.432 MHz crystal */ 61 at91sam9261_initialize(18432000); 62 63 /* Setup the LEDs */ 64 at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14); 65 66 /* Setup the serial ports and console */ 67 at91_init_serial(&ek_uart_config); 68} 69 70static void __init ek_init_irq(void) 71{ 72 at91sam9261_init_interrupts(NULL); 73} 74 75 76/* 77 * DM9000 ethernet device 78 */ 79#if defined(CONFIG_DM9000) 80static struct resource at91sam9261_dm9000_resource[] = { 81 [0] = { 82 .start = AT91_CHIPSELECT_2, 83 .end = AT91_CHIPSELECT_2 + 3, 84 .flags = IORESOURCE_MEM 85 }, 86 [1] = { 87 .start = AT91_CHIPSELECT_2 + 0x44, 88 .end = AT91_CHIPSELECT_2 + 0xFF, 89 .flags = IORESOURCE_MEM 90 }, 91 [2] = { 92 .start = AT91_PIN_PC11, 93 .end = AT91_PIN_PC11, 94 .flags = IORESOURCE_IRQ 95 } 96}; 97 98static struct dm9000_plat_data dm9000_platdata = { 99 .flags = DM9000_PLATF_16BITONLY, 100}; 101 102static struct platform_device at91sam9261_dm9000_device = { 103 .name = "dm9000", 104 .id = 0, 105 .num_resources = ARRAY_SIZE(at91sam9261_dm9000_resource), 106 .resource = at91sam9261_dm9000_resource, 107 .dev = { 108 .platform_data = &dm9000_platdata, 109 } 110}; 111 112static void __init ek_add_device_dm9000(void) 113{ 114 /* 115 * Configure Chip-Select 2 on SMC for the DM9000. 116 * Note: These timings were calculated for MASTER_CLOCK = 100000000 117 * according to the DM9000 timings. 118 */ 119 at91_sys_write(AT91_SMC_SETUP(2), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0)); 120 at91_sys_write(AT91_SMC_PULSE(2), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8)); 121 at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16)); 122 at91_sys_write(AT91_SMC_MODE(2), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1)); 123 124 /* Configure Reset signal as output */ 125 at91_set_gpio_output(AT91_PIN_PC10, 0); 126 127 /* Configure Interrupt pin as input, no pull-up */ 128 at91_set_gpio_input(AT91_PIN_PC11, 0); 129 130 platform_device_register(&at91sam9261_dm9000_device); 131} 132#else 133static void __init ek_add_device_dm9000(void) {} 134#endif /* CONFIG_DM9000 */ 135 136 137/* 138 * USB Host Port 139 */ 140static struct at91_usbh_data __initdata ek_usbh_data = { 141 .ports = 2, 142}; 143 144 145/* 146 * USB Device Port 147 */ 148static struct at91_udc_data __initdata ek_udc_data = { 149 .vbus_pin = AT91_PIN_PB29, 150 .pullup_pin = 0, /* pull-up driven by UDC */ 151}; 152 153 154/* 155 * MCI (SD/MMC) 156 */ 157static struct at91_mmc_data __initdata ek_mmc_data = { 158 .wire4 = 1, 159// .det_pin = ... not connected 160// .wp_pin = ... not connected 161// .vcc_pin = ... not connected 162}; 163 164 165/* 166 * NAND flash 167 */ 168static struct mtd_partition __initdata ek_nand_partition[] = { 169 { 170 .name = "Partition 1", 171 .offset = 0, 172 .size = 256 * 1024, 173 }, 174 { 175 .name = "Partition 2", 176 .offset = 256 * 1024 , 177 .size = MTDPART_SIZ_FULL, 178 }, 179}; 180 181static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) 182{ 183 *num_partitions = ARRAY_SIZE(ek_nand_partition); 184 return ek_nand_partition; 185} 186 187static struct at91_nand_data __initdata ek_nand_data = { 188 .ale = 22, 189 .cle = 21, 190// .det_pin = ... not connected 191 .rdy_pin = AT91_PIN_PC15, 192 .enable_pin = AT91_PIN_PC14, 193 .partition_info = nand_partitions, 194#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16) 195 .bus_width_16 = 1, 196#else 197 .bus_width_16 = 0, 198#endif 199}; 200 201/* 202 * ADS7846 Touchscreen 203 */ 204#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) 205 206static int ads7843_pendown_state(void) 207{ 208 return !at91_get_gpio_value(AT91_PIN_PC2); /* Touchscreen PENIRQ */ 209} 210 211static struct ads7846_platform_data ads_info = { 212 .model = 7843, 213 .x_min = 150, 214 .x_max = 3830, 215 .y_min = 190, 216 .y_max = 3830, 217 .vref_delay_usecs = 100, 218 .x_plate_ohms = 450, 219 .y_plate_ohms = 250, 220 .pressure_max = 15000, 221 .debounce_max = 1, 222 .debounce_rep = 0, 223 .debounce_tol = (~0), 224 .get_pendown_state = ads7843_pendown_state, 225}; 226 227static void __init ek_add_device_ts(void) 228{ 229 at91_set_B_periph(AT91_PIN_PC2, 1); /* External IRQ0, with pullup */ 230 at91_set_gpio_input(AT91_PIN_PA11, 1); /* Touchscreen BUSY signal */ 231} 232#else 233static void __init ek_add_device_ts(void) {} 234#endif 235 236/* 237 * SPI devices 238 */ 239static struct spi_board_info ek_spi_devices[] = { 240 { /* DataFlash chip */ 241 .modalias = "mtd_dataflash", 242 .chip_select = 0, 243 .max_speed_hz = 15 * 1000 * 1000, 244 .bus_num = 0, 245 }, 246#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) 247 { 248 .modalias = "ads7846", 249 .chip_select = 2, 250 .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */ 251 .bus_num = 0, 252 .platform_data = &ads_info, 253 .irq = AT91SAM9261_ID_IRQ0, 254 }, 255#endif 256#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD) 257 { /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */ 258 .modalias = "mtd_dataflash", 259 .chip_select = 3, 260 .max_speed_hz = 15 * 1000 * 1000, 261 .bus_num = 0, 262 }, 263#elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE) 264 { /* AT73C213 DAC */ 265 .modalias = "at73c213", 266 .chip_select = 3, 267 .max_speed_hz = 10 * 1000 * 1000, 268 .bus_num = 0, 269 }, 270#endif 271}; 272 273 274static void __init ek_board_init(void) 275{ 276 /* Serial */ 277 at91_add_device_serial(); 278 /* USB Host */ 279 at91_add_device_usbh(&ek_usbh_data); 280 /* USB Device */ 281 at91_add_device_udc(&ek_udc_data); 282 /* I2C */ 283 at91_add_device_i2c(); 284 /* NAND */ 285 at91_add_device_nand(&ek_nand_data); 286 /* DM9000 ethernet */ 287 ek_add_device_dm9000(); 288 289 /* spi0 and mmc/sd share the same PIO pins */ 290#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE) 291 /* SPI */ 292 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices)); 293 /* Touchscreen */ 294 ek_add_device_ts(); 295#else 296 /* MMC */ 297 at91_add_device_mmc(0, &ek_mmc_data); 298#endif 299} 300 301MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK") 302 /* Maintainer: Atmel */ 303 .phys_io = AT91_BASE_SYS, 304 .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc, 305 .boot_params = AT91_SDRAM_BASE + 0x100, 306 .timer = &at91sam926x_timer, 307 .map_io = ek_map_io, 308 .init_irq = ek_init_irq, 309 .init_machine = ek_board_init, 310MACHINE_END 311