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>
55 * board revision encoding
58 * 1 => 2 sd/mmc slots connectors (board from revision C)
60 #define HAVE_2MMC (1 << 0)
61 static int inline ek_have_2mmc(void)
63 return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
67 static void __init ek_init_early(void)
69 /* Initialize processor: 18.432 MHz crystal */
70 at91_initialize(18432000);
76 static struct at91_usbh_data __initdata ek_usbh_data = {
78 .vbus_pin = {-EINVAL, -EINVAL},
79 .overcurrent_pin= {-EINVAL, -EINVAL},
85 static struct at91_udc_data __initdata ek_udc_data = {
86 .vbus_pin = AT91_PIN_PC5,
87 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
94 static struct spi_board_info ek_spi_devices[] = {
95 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
96 { /* DataFlash chip */
97 .modalias = "mtd_dataflash",
99 .max_speed_hz = 15 * 1000 * 1000,
102 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
103 { /* DataFlash card */
104 .modalias = "mtd_dataflash",
106 .max_speed_hz = 15 * 1000 * 1000,
115 * MACB Ethernet device
117 static struct macb_platform_data __initdata ek_macb_data = {
118 .phy_irq_pin = AT91_PIN_PA7,
122 static void __init ek_add_device_macb(void)
125 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
127 at91_add_device_eth(&ek_macb_data);
133 static struct mtd_partition __initdata ek_nand_partition[] = {
140 .name = "Partition 1",
141 .offset = MTDPART_OFS_NXTBLK,
145 .name = "Partition 2",
146 .offset = MTDPART_OFS_NXTBLK,
147 .size = MTDPART_SIZ_FULL,
151 /* det_pin is not connected */
152 static struct atmel_nand_data __initdata ek_nand_data = {
155 .rdy_pin = AT91_PIN_PC13,
156 .enable_pin = AT91_PIN_PC14,
158 .ecc_mode = NAND_ECC_SOFT,
160 .parts = ek_nand_partition,
161 .num_parts = ARRAY_SIZE(ek_nand_partition),
164 static struct sam9_smc_config __initdata ek_nand_smc_config = {
167 .ncs_write_setup = 0,
172 .ncs_write_pulse = 4,
178 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
182 static void __init ek_add_device_nand(void)
184 ek_nand_data.bus_width_16 = board_have_nand_16bit();
185 /* setup bus-width (8 or 16) */
186 if (ek_nand_data.bus_width_16)
187 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
189 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
191 /* configure chip-select 3 (NAND) */
192 sam9_smc_configure(0, 3, &ek_nand_smc_config);
194 at91_add_device_nand(&ek_nand_data);
200 * wp_pin and vcc_pin are not connected
202 static struct mci_platform_data __initdata ek_mmc_data = {
205 .detect_pin = AT91_PIN_PC9,
211 static void __init ek_add_device_mmc(void)
213 if (ek_have_2mmc()) {
214 ek_mmc_data.slot[0].bus_width = 4;
215 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
216 ek_mmc_data.slot[0].wp_pin = -1;
218 at91_add_device_mci(0, &ek_mmc_data);
224 static struct gpio_led ek_leds[] = {
225 { /* "bottom" led, green, userled1 to be defined */
227 .gpio = AT91_PIN_PA6,
229 .default_trigger = "none",
231 { /* "power" led, yellow */
233 .gpio = AT91_PIN_PA9,
234 .default_trigger = "heartbeat",
238 static void __init ek_add_device_gpio_leds(void)
240 if (ek_have_2mmc()) {
241 ek_leds[0].gpio = AT91_PIN_PB8;
242 ek_leds[1].gpio = AT91_PIN_PB9;
245 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
251 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
252 static struct gpio_keys_button ek_buttons[] = {
254 .gpio = AT91_PIN_PA30,
261 .gpio = AT91_PIN_PA31,
269 static struct gpio_keys_platform_data ek_button_data = {
270 .buttons = ek_buttons,
271 .nbuttons = ARRAY_SIZE(ek_buttons),
274 static struct platform_device ek_button_device = {
279 .platform_data = &ek_button_data,
283 static void __init ek_add_device_buttons(void)
285 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
286 at91_set_deglitch(AT91_PIN_PA30, 1);
287 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
288 at91_set_deglitch(AT91_PIN_PA31, 1);
290 platform_device_register(&ek_button_device);
293 static void __init ek_add_device_buttons(void) {}
300 static struct at91_adc_data ek_adc_data = {
301 .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
302 .use_external_triggers = true,
306 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
307 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
308 REGULATOR_SUPPLY("AVDD", "0-001b"),
309 REGULATOR_SUPPLY("HPVDD", "0-001b"),
310 REGULATOR_SUPPLY("DBVDD", "0-001b"),
311 REGULATOR_SUPPLY("DCVDD", "0-001b"),
314 static struct regulator_init_data ek_avdd_reg_init_data = {
317 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
319 .consumer_supplies = ek_audio_consumer_supplies,
320 .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
323 static struct fixed_voltage_config ek_vdd_pdata = {
324 .supply_name = "board-3V3",
325 .microvolts = 3300000,
327 .enabled_at_boot = 0,
328 .init_data = &ek_avdd_reg_init_data,
330 static struct platform_device ek_voltage_regulator = {
331 .name = "reg-fixed-voltage",
335 .platform_data = &ek_vdd_pdata,
338 static void __init ek_add_regulators(void)
340 platform_device_register(&ek_voltage_regulator);
343 static void __init ek_add_regulators(void) {}
347 static struct i2c_board_info __initdata ek_i2c_devices[] = {
349 I2C_BOARD_INFO("24c512", 0x50)
352 I2C_BOARD_INFO("wm8731", 0x1b)
356 static struct platform_device sam9g20ek_audio_device = {
357 .name = "at91sam9g20ek-audio",
361 static void __init ek_add_device_audio(void)
363 platform_device_register(&sam9g20ek_audio_device);
367 static void __init ek_board_init(void)
370 /* DBGU on ttyS0. (Rx & Tx only) */
371 at91_register_uart(0, 0, 0);
373 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
374 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
375 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
378 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
379 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
380 at91_add_device_serial();
382 at91_add_device_usbh(&ek_usbh_data);
384 at91_add_device_udc(&ek_udc_data);
386 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
388 ek_add_device_nand();
390 ek_add_device_macb();
396 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
398 ek_add_device_gpio_leds();
400 ek_add_device_buttons();
402 at91_add_device_adc(&ek_adc_data);
403 /* PCK0 provides MCLK to the WM8731 */
404 at91_set_B_periph(AT91_PIN_PC1, 0);
405 /* SSC (for WM8731) */
406 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
407 ek_add_device_audio();
410 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
411 /* Maintainer: Atmel */
412 .init_time = at91sam926x_pit_init,
413 .map_io = at91_map_io,
414 .handle_irq = at91_aic_handle_irq,
415 .init_early = ek_init_early,
416 .init_irq = at91_init_irq_default,
417 .init_machine = ek_board_init,
420 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
421 /* Maintainer: Atmel */
422 .init_time = at91sam926x_pit_init,
423 .map_io = at91_map_io,
424 .handle_irq = at91_aic_handle_irq,
425 .init_early = ek_init_early,
426 .init_irq = at91_init_irq_default,
427 .init_machine = ek_board_init,