2 * Copyright (C) 2005 SAN People
3 * Copyright (C) 2008 Atmel
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/types.h>
21 #include <linux/gpio.h>
22 #include <linux/init.h>
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/spi/spi.h>
27 #include <linux/spi/at73c213.h>
28 #include <linux/gpio_keys.h>
29 #include <linux/input.h>
30 #include <linux/clk.h>
31 #include <linux/regulator/machine.h>
32 #include <linux/regulator/fixed.h>
33 #include <linux/regulator/consumer.h>
35 #include <mach/hardware.h>
36 #include <asm/setup.h>
37 #include <asm/mach-types.h>
40 #include <asm/mach/arch.h>
41 #include <asm/mach/map.h>
42 #include <asm/mach/irq.h>
44 #include <mach/board.h>
45 #include <mach/at91sam9_smc.h>
46 #include <mach/system_rev.h>
52 * board revision encoding
55 * 1 => 2 sd/mmc slots connectors (board from revision C)
57 #define HAVE_2MMC (1 << 0)
58 static int inline ek_have_2mmc(void)
60 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
64 static void __init ek_init_early(void)
66 /* Initialize processor: 18.432 MHz crystal */
67 at91_initialize(18432000);
69 /* DBGU on ttyS0. (Rx & Tx only) */
70 at91_register_uart(0, 0, 0);
72 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
73 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
74 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
77 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
78 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
80 /* set serial console to ttyS0 (ie, DBGU) */
81 at91_set_serial_console(0);
87 static struct at91_usbh_data __initdata ek_usbh_data = {
94 static struct at91_udc_data __initdata ek_udc_data = {
95 .vbus_pin = AT91_PIN_PC5,
96 .pullup_pin = 0, /* pull-up driven by UDC */
103 static struct spi_board_info ek_spi_devices[] = {
104 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
105 { /* DataFlash chip */
106 .modalias = "mtd_dataflash",
108 .max_speed_hz = 15 * 1000 * 1000,
111 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
112 { /* DataFlash card */
113 .modalias = "mtd_dataflash",
115 .max_speed_hz = 15 * 1000 * 1000,
124 * MACB Ethernet device
126 static struct at91_eth_data __initdata ek_macb_data = {
127 .phy_irq_pin = AT91_PIN_PA7,
131 static void __init ek_add_device_macb(void)
134 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
136 at91_add_device_eth(&ek_macb_data);
142 static struct mtd_partition __initdata ek_nand_partition[] = {
149 .name = "Partition 1",
150 .offset = MTDPART_OFS_NXTBLK,
154 .name = "Partition 2",
155 .offset = MTDPART_OFS_NXTBLK,
156 .size = MTDPART_SIZ_FULL,
160 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
162 *num_partitions = ARRAY_SIZE(ek_nand_partition);
163 return ek_nand_partition;
166 /* det_pin is not connected */
167 static struct atmel_nand_data __initdata ek_nand_data = {
170 .rdy_pin = AT91_PIN_PC13,
171 .enable_pin = AT91_PIN_PC14,
172 .partition_info = nand_partitions,
175 static struct sam9_smc_config __initdata ek_nand_smc_config = {
178 .ncs_write_setup = 0,
183 .ncs_write_pulse = 4,
189 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
193 static void __init ek_add_device_nand(void)
195 ek_nand_data.bus_width_16 = board_have_nand_16bit();
196 /* setup bus-width (8 or 16) */
197 if (ek_nand_data.bus_width_16)
198 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
200 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
202 /* configure chip-select 3 (NAND) */
203 sam9_smc_configure(3, &ek_nand_smc_config);
205 at91_add_device_nand(&ek_nand_data);
211 * wp_pin and vcc_pin are not connected
213 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
214 static struct mci_platform_data __initdata ek_mmc_data = {
217 .detect_pin = AT91_PIN_PC9,
222 static struct at91_mmc_data __initdata ek_mmc_data = {
223 .slot_b = 1, /* Only one slot so use slot B */
225 .det_pin = AT91_PIN_PC9,
229 static void __init ek_add_device_mmc(void)
231 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
232 if (ek_have_2mmc()) {
233 ek_mmc_data.slot[0].bus_width = 4;
234 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
236 at91_add_device_mci(0, &ek_mmc_data);
238 at91_add_device_mmc(0, &ek_mmc_data);
245 static struct gpio_led ek_leds[] = {
246 { /* "bottom" led, green, userled1 to be defined */
248 .gpio = AT91_PIN_PA6,
250 .default_trigger = "none",
252 { /* "power" led, yellow */
254 .gpio = AT91_PIN_PA9,
255 .default_trigger = "heartbeat",
259 static void __init ek_add_device_gpio_leds(void)
261 if (ek_have_2mmc()) {
262 ek_leds[0].gpio = AT91_PIN_PB8;
263 ek_leds[1].gpio = AT91_PIN_PB9;
266 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
272 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
273 static struct gpio_keys_button ek_buttons[] = {
275 .gpio = AT91_PIN_PA30,
282 .gpio = AT91_PIN_PA31,
290 static struct gpio_keys_platform_data ek_button_data = {
291 .buttons = ek_buttons,
292 .nbuttons = ARRAY_SIZE(ek_buttons),
295 static struct platform_device ek_button_device = {
300 .platform_data = &ek_button_data,
304 static void __init ek_add_device_buttons(void)
306 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
307 at91_set_deglitch(AT91_PIN_PA30, 1);
308 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
309 at91_set_deglitch(AT91_PIN_PA31, 1);
311 platform_device_register(&ek_button_device);
314 static void __init ek_add_device_buttons(void) {}
317 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
318 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
319 REGULATOR_SUPPLY("AVDD", "0-001b"),
320 REGULATOR_SUPPLY("HPVDD", "0-001b"),
321 REGULATOR_SUPPLY("DBVDD", "0-001b"),
322 REGULATOR_SUPPLY("DCVDD", "0-001b"),
325 static struct regulator_init_data ek_avdd_reg_init_data = {
328 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
330 .consumer_supplies = ek_audio_consumer_supplies,
331 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
334 static struct fixed_voltage_config ek_vdd_pdata = {
335 .supply_name = "board-3V3",
336 .microvolts = 3300000,
338 .enabled_at_boot = 0,
339 .init_data = &ek_avdd_reg_init_data,
341 static struct platform_device ek_voltage_regulator = {
342 .name = "reg-fixed-voltage",
346 .platform_data = &ek_vdd_pdata,
349 static void __init ek_add_regulators(void)
351 platform_device_register(&ek_voltage_regulator);
354 static void __init ek_add_regulators(void) {}
358 static struct i2c_board_info __initdata ek_i2c_devices[] = {
360 I2C_BOARD_INFO("24c512", 0x50)
363 I2C_BOARD_INFO("wm8731", 0x1b)
368 static void __init ek_board_init(void)
371 at91_add_device_serial();
373 at91_add_device_usbh(&ek_usbh_data);
375 at91_add_device_udc(&ek_udc_data);
377 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
379 ek_add_device_nand();
381 ek_add_device_macb();
387 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
389 ek_add_device_gpio_leds();
391 ek_add_device_buttons();
392 /* PCK0 provides MCLK to the WM8731 */
393 at91_set_B_periph(AT91_PIN_PC1, 0);
394 /* SSC (for WM8731) */
395 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
398 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
399 /* Maintainer: Atmel */
400 .timer = &at91sam926x_timer,
401 .map_io = at91_map_io,
402 .init_early = ek_init_early,
403 .init_irq = at91_init_irq_default,
404 .init_machine = ek_board_init,
407 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
408 /* Maintainer: Atmel */
409 .timer = &at91sam926x_timer,
410 .map_io = at91_map_io,
411 .init_early = ek_init_early,
412 .init_irq = at91_init_irq_default,
413 .init_machine = ek_board_init,