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 <linux/platform_data/at91_adc.h>
37 #include <mach/hardware.h>
38 #include <asm/setup.h>
39 #include <asm/mach-types.h>
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
46 #include <mach/board.h>
47 #include <mach/at91sam9_smc.h>
48 #include <mach/system_rev.h>
54 * board revision encoding
57 * 1 => 2 sd/mmc slots connectors (board from revision C)
59 #define HAVE_2MMC (1 << 0)
60 static int inline ek_have_2mmc(void)
62 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
66 static void __init ek_init_early(void)
68 /* Initialize processor: 18.432 MHz crystal */
69 at91_initialize(18432000);
75 static struct at91_usbh_data __initdata ek_usbh_data = {
77 .vbus_pin = {-EINVAL, -EINVAL},
78 .overcurrent_pin= {-EINVAL, -EINVAL},
84 static struct at91_udc_data __initdata ek_udc_data = {
85 .vbus_pin = AT91_PIN_PC5,
86 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
93 static struct spi_board_info ek_spi_devices[] = {
94 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
95 { /* DataFlash chip */
96 .modalias = "mtd_dataflash",
98 .max_speed_hz = 15 * 1000 * 1000,
101 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
102 { /* DataFlash card */
103 .modalias = "mtd_dataflash",
105 .max_speed_hz = 15 * 1000 * 1000,
114 * MACB Ethernet device
116 static struct macb_platform_data __initdata ek_macb_data = {
117 .phy_irq_pin = AT91_PIN_PA7,
121 static void __init ek_add_device_macb(void)
124 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
126 at91_add_device_eth(&ek_macb_data);
132 static struct mtd_partition __initdata ek_nand_partition[] = {
139 .name = "Partition 1",
140 .offset = MTDPART_OFS_NXTBLK,
144 .name = "Partition 2",
145 .offset = MTDPART_OFS_NXTBLK,
146 .size = MTDPART_SIZ_FULL,
150 /* det_pin is not connected */
151 static struct atmel_nand_data __initdata ek_nand_data = {
154 .rdy_pin = AT91_PIN_PC13,
155 .enable_pin = AT91_PIN_PC14,
157 .ecc_mode = NAND_ECC_SOFT,
159 .parts = ek_nand_partition,
160 .num_parts = ARRAY_SIZE(ek_nand_partition),
163 static struct sam9_smc_config __initdata ek_nand_smc_config = {
166 .ncs_write_setup = 0,
171 .ncs_write_pulse = 4,
177 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
181 static void __init ek_add_device_nand(void)
183 ek_nand_data.bus_width_16 = board_have_nand_16bit();
184 /* setup bus-width (8 or 16) */
185 if (ek_nand_data.bus_width_16)
186 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
188 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
190 /* configure chip-select 3 (NAND) */
191 sam9_smc_configure(0, 3, &ek_nand_smc_config);
193 at91_add_device_nand(&ek_nand_data);
199 * wp_pin and vcc_pin are not connected
201 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
202 static struct mci_platform_data __initdata ek_mmc_data = {
205 .detect_pin = AT91_PIN_PC9,
211 static struct at91_mmc_data __initdata ek_mmc_data = {
212 .slot_b = 1, /* Only one slot so use slot B */
214 .det_pin = AT91_PIN_PC9,
220 static void __init ek_add_device_mmc(void)
222 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
223 if (ek_have_2mmc()) {
224 ek_mmc_data.slot[0].bus_width = 4;
225 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
226 ek_mmc_data.slot[0].wp_pin = -1;
228 at91_add_device_mci(0, &ek_mmc_data);
230 at91_add_device_mmc(0, &ek_mmc_data);
237 static struct gpio_led ek_leds[] = {
238 { /* "bottom" led, green, userled1 to be defined */
240 .gpio = AT91_PIN_PA6,
242 .default_trigger = "none",
244 { /* "power" led, yellow */
246 .gpio = AT91_PIN_PA9,
247 .default_trigger = "heartbeat",
251 static void __init ek_add_device_gpio_leds(void)
253 if (ek_have_2mmc()) {
254 ek_leds[0].gpio = AT91_PIN_PB8;
255 ek_leds[1].gpio = AT91_PIN_PB9;
258 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
264 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
265 static struct gpio_keys_button ek_buttons[] = {
267 .gpio = AT91_PIN_PA30,
274 .gpio = AT91_PIN_PA31,
282 static struct gpio_keys_platform_data ek_button_data = {
283 .buttons = ek_buttons,
284 .nbuttons = ARRAY_SIZE(ek_buttons),
287 static struct platform_device ek_button_device = {
292 .platform_data = &ek_button_data,
296 static void __init ek_add_device_buttons(void)
298 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
299 at91_set_deglitch(AT91_PIN_PA30, 1);
300 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
301 at91_set_deglitch(AT91_PIN_PA31, 1);
303 platform_device_register(&ek_button_device);
306 static void __init ek_add_device_buttons(void) {}
313 static struct at91_adc_data ek_adc_data = {
314 .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
315 .use_external_triggers = true,
319 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
320 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
321 REGULATOR_SUPPLY("AVDD", "0-001b"),
322 REGULATOR_SUPPLY("HPVDD", "0-001b"),
323 REGULATOR_SUPPLY("DBVDD", "0-001b"),
324 REGULATOR_SUPPLY("DCVDD", "0-001b"),
327 static struct regulator_init_data ek_avdd_reg_init_data = {
330 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
332 .consumer_supplies = ek_audio_consumer_supplies,
333 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
336 static struct fixed_voltage_config ek_vdd_pdata = {
337 .supply_name = "board-3V3",
338 .microvolts = 3300000,
340 .enabled_at_boot = 0,
341 .init_data = &ek_avdd_reg_init_data,
343 static struct platform_device ek_voltage_regulator = {
344 .name = "reg-fixed-voltage",
348 .platform_data = &ek_vdd_pdata,
351 static void __init ek_add_regulators(void)
353 platform_device_register(&ek_voltage_regulator);
356 static void __init ek_add_regulators(void) {}
360 static struct i2c_board_info __initdata ek_i2c_devices[] = {
362 I2C_BOARD_INFO("24c512", 0x50)
365 I2C_BOARD_INFO("wm8731", 0x1b)
370 static void __init ek_board_init(void)
373 /* DBGU on ttyS0. (Rx & Tx only) */
374 at91_register_uart(0, 0, 0);
376 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
377 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
378 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
381 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
382 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
383 at91_add_device_serial();
385 at91_add_device_usbh(&ek_usbh_data);
387 at91_add_device_udc(&ek_udc_data);
389 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
391 ek_add_device_nand();
393 ek_add_device_macb();
399 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
401 ek_add_device_gpio_leds();
403 ek_add_device_buttons();
405 at91_add_device_adc(&ek_adc_data);
406 /* PCK0 provides MCLK to the WM8731 */
407 at91_set_B_periph(AT91_PIN_PC1, 0);
408 /* SSC (for WM8731) */
409 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
412 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
413 /* Maintainer: Atmel */
414 .timer = &at91sam926x_timer,
415 .map_io = at91_map_io,
416 .init_early = ek_init_early,
417 .init_irq = at91_init_irq_default,
418 .init_machine = ek_board_init,
421 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
422 /* Maintainer: Atmel */
423 .timer = &at91sam926x_timer,
424 .map_io = at91_map_io,
425 .init_early = ek_init_early,
426 .init_irq = at91_init_irq_default,
427 .init_machine = ek_board_init,