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/at91sam9_smc.h>
47 #include <mach/system_rev.h>
56 * board revision encoding
59 * 1 => 2 sd/mmc slots connectors (board from revision C)
61 #define HAVE_2MMC (1 << 0)
62 static int inline ek_have_2mmc(void)
64 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
68 static void __init ek_init_early(void)
70 /* Initialize processor: 18.432 MHz crystal */
71 at91_initialize(18432000);
77 static struct at91_usbh_data __initdata ek_usbh_data = {
79 .vbus_pin = {-EINVAL, -EINVAL},
80 .overcurrent_pin= {-EINVAL, -EINVAL},
86 static struct at91_udc_data __initdata ek_udc_data = {
87 .vbus_pin = AT91_PIN_PC5,
88 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
95 static struct spi_board_info ek_spi_devices[] = {
96 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
97 { /* DataFlash chip */
98 .modalias = "mtd_dataflash",
100 .max_speed_hz = 15 * 1000 * 1000,
103 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
104 { /* DataFlash card */
105 .modalias = "mtd_dataflash",
107 .max_speed_hz = 15 * 1000 * 1000,
116 * MACB Ethernet device
118 static struct macb_platform_data __initdata ek_macb_data = {
119 .phy_irq_pin = AT91_PIN_PA7,
123 static void __init ek_add_device_macb(void)
126 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
128 at91_add_device_eth(&ek_macb_data);
134 static struct mtd_partition __initdata ek_nand_partition[] = {
141 .name = "Partition 1",
142 .offset = MTDPART_OFS_NXTBLK,
146 .name = "Partition 2",
147 .offset = MTDPART_OFS_NXTBLK,
148 .size = MTDPART_SIZ_FULL,
152 /* det_pin is not connected */
153 static struct atmel_nand_data __initdata ek_nand_data = {
156 .rdy_pin = AT91_PIN_PC13,
157 .enable_pin = AT91_PIN_PC14,
159 .ecc_mode = NAND_ECC_SOFT,
161 .parts = ek_nand_partition,
162 .num_parts = ARRAY_SIZE(ek_nand_partition),
165 static struct sam9_smc_config __initdata ek_nand_smc_config = {
168 .ncs_write_setup = 0,
173 .ncs_write_pulse = 4,
179 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
183 static void __init ek_add_device_nand(void)
185 ek_nand_data.bus_width_16 = board_have_nand_16bit();
186 /* setup bus-width (8 or 16) */
187 if (ek_nand_data.bus_width_16)
188 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
190 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
192 /* configure chip-select 3 (NAND) */
193 sam9_smc_configure(0, 3, &ek_nand_smc_config);
195 at91_add_device_nand(&ek_nand_data);
201 * wp_pin and vcc_pin are not connected
203 static struct mci_platform_data __initdata ek_mmc_data = {
206 .detect_pin = AT91_PIN_PC9,
212 static void __init ek_add_device_mmc(void)
214 if (ek_have_2mmc()) {
215 ek_mmc_data.slot[0].bus_width = 4;
216 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
217 ek_mmc_data.slot[0].wp_pin = -1;
219 at91_add_device_mci(0, &ek_mmc_data);
225 static struct gpio_led ek_leds[] = {
226 { /* "bottom" led, green, userled1 to be defined */
228 .gpio = AT91_PIN_PA6,
230 .default_trigger = "none",
232 { /* "power" led, yellow */
234 .gpio = AT91_PIN_PA9,
235 .default_trigger = "heartbeat",
239 static void __init ek_add_device_gpio_leds(void)
241 if (ek_have_2mmc()) {
242 ek_leds[0].gpio = AT91_PIN_PB8;
243 ek_leds[1].gpio = AT91_PIN_PB9;
246 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
252 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
253 static struct gpio_keys_button ek_buttons[] = {
255 .gpio = AT91_PIN_PA30,
262 .gpio = AT91_PIN_PA31,
270 static struct gpio_keys_platform_data ek_button_data = {
271 .buttons = ek_buttons,
272 .nbuttons = ARRAY_SIZE(ek_buttons),
275 static struct platform_device ek_button_device = {
280 .platform_data = &ek_button_data,
284 static void __init ek_add_device_buttons(void)
286 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
287 at91_set_deglitch(AT91_PIN_PA30, 1);
288 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
289 at91_set_deglitch(AT91_PIN_PA31, 1);
291 platform_device_register(&ek_button_device);
294 static void __init ek_add_device_buttons(void) {}
301 static struct at91_adc_data ek_adc_data = {
302 .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
303 .use_external_triggers = true,
307 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
308 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
309 REGULATOR_SUPPLY("AVDD", "0-001b"),
310 REGULATOR_SUPPLY("HPVDD", "0-001b"),
311 REGULATOR_SUPPLY("DBVDD", "0-001b"),
312 REGULATOR_SUPPLY("DCVDD", "0-001b"),
315 static struct regulator_init_data ek_avdd_reg_init_data = {
318 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
320 .consumer_supplies = ek_audio_consumer_supplies,
321 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
324 static struct fixed_voltage_config ek_vdd_pdata = {
325 .supply_name = "board-3V3",
326 .microvolts = 3300000,
328 .enabled_at_boot = 0,
329 .init_data = &ek_avdd_reg_init_data,
331 static struct platform_device ek_voltage_regulator = {
332 .name = "reg-fixed-voltage",
336 .platform_data = &ek_vdd_pdata,
339 static void __init ek_add_regulators(void)
341 platform_device_register(&ek_voltage_regulator);
344 static void __init ek_add_regulators(void) {}
348 static struct i2c_board_info __initdata ek_i2c_devices[] = {
350 I2C_BOARD_INFO("24c512", 0x50)
353 I2C_BOARD_INFO("wm8731", 0x1b)
357 static struct platform_device sam9g20ek_audio_device = {
358 .name = "at91sam9g20ek-audio",
362 static void __init ek_add_device_audio(void)
364 platform_device_register(&sam9g20ek_audio_device);
368 static void __init ek_board_init(void)
371 /* DBGU on ttyS0. (Rx & Tx only) */
372 at91_register_uart(0, 0, 0);
374 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
375 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
376 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
379 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
380 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
381 at91_add_device_serial();
383 at91_add_device_usbh(&ek_usbh_data);
385 at91_add_device_udc(&ek_udc_data);
387 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
389 ek_add_device_nand();
391 ek_add_device_macb();
397 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
399 ek_add_device_gpio_leds();
401 ek_add_device_buttons();
403 at91_add_device_adc(&ek_adc_data);
404 /* PCK0 provides MCLK to the WM8731 */
405 at91_set_B_periph(AT91_PIN_PC1, 0);
406 /* SSC (for WM8731) */
407 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
408 ek_add_device_audio();
411 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
412 /* Maintainer: Atmel */
413 .init_time = at91_init_time,
414 .map_io = at91_map_io,
415 .handle_irq = at91_aic_handle_irq,
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 .init_time = at91_init_time,
424 .map_io = at91_map_io,
425 .handle_irq = at91_aic_handle_irq,
426 .init_early = ek_init_early,
427 .init_irq = at91_init_irq_default,
428 .init_machine = ek_board_init,