1 /*
2 * linux/arch/arm/mach-at91/board-sam9260ek.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/at73c213.h>
29 #include <linux/clk.h>
30 #include <linux/i2c/at24.h>
31 #include <linux/gpio_keys.h>
32 #include <linux/input.h>
33
34 #include <asm/setup.h>
35 #include <asm/mach-types.h>
36 #include <asm/irq.h>
37
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40 #include <asm/mach/irq.h>
41
42 #include <mach/hardware.h>
43 #include <mach/board.h>
44 #include <mach/gpio.h>
45 #include <mach/at91sam9_smc.h>
46 #include <mach/at91_shdwc.h>
47
48 #include "sam9_smc.h"
49 #include "generic.h"
50
51
ek_map_io(void)52 static void __init ek_map_io(void)
53 {
54 /* Initialize processor: 18.432 MHz crystal */
55 at91sam9260_initialize(18432000);
56
57 /* DGBU on ttyS0. (Rx & Tx only) */
58 at91_register_uart(0, 0, 0);
59
60 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
61 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
62 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
63 | ATMEL_UART_RI);
64
65 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
66 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
67
68 /* set serial console to ttyS0 (ie, DBGU) */
69 at91_set_serial_console(0);
70 }
71
ek_init_irq(void)72 static void __init ek_init_irq(void)
73 {
74 at91sam9260_init_interrupts(NULL);
75 }
76
77
78 /*
79 * USB Host port
80 */
81 static struct at91_usbh_data __initdata ek_usbh_data = {
82 .ports = 2,
83 };
84
85 /*
86 * USB Device port
87 */
88 static struct at91_udc_data __initdata ek_udc_data = {
89 .vbus_pin = AT91_PIN_PC5,
90 .pullup_pin = 0, /* pull-up driven by UDC */
91 };
92
93
94 /*
95 * Audio
96 */
97 static struct at73c213_board_info at73c213_data = {
98 .ssc_id = 0,
99 .shortname = "AT91SAM9260-EK external DAC",
100 };
101
102 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
at73c213_set_clk(struct at73c213_board_info * info)103 static void __init at73c213_set_clk(struct at73c213_board_info *info)
104 {
105 struct clk *pck0;
106 struct clk *plla;
107
108 pck0 = clk_get(NULL, "pck0");
109 plla = clk_get(NULL, "plla");
110
111 /* AT73C213 MCK Clock */
112 at91_set_B_periph(AT91_PIN_PC1, 0); /* PCK0 */
113
114 clk_set_parent(pck0, plla);
115 clk_put(plla);
116
117 info->dac_clk = pck0;
118 }
119 #else
at73c213_set_clk(struct at73c213_board_info * info)120 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
121 #endif
122
123 /*
124 * SPI devices.
125 */
126 static struct spi_board_info ek_spi_devices[] = {
127 #if !defined(CONFIG_MMC_AT91)
128 { /* DataFlash chip */
129 .modalias = "mtd_dataflash",
130 .chip_select = 1,
131 .max_speed_hz = 15 * 1000 * 1000,
132 .bus_num = 0,
133 },
134 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
135 { /* DataFlash card */
136 .modalias = "mtd_dataflash",
137 .chip_select = 0,
138 .max_speed_hz = 15 * 1000 * 1000,
139 .bus_num = 0,
140 },
141 #endif
142 #endif
143 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
144 { /* AT73C213 DAC */
145 .modalias = "at73c213",
146 .chip_select = 0,
147 .max_speed_hz = 10 * 1000 * 1000,
148 .bus_num = 1,
149 .mode = SPI_MODE_1,
150 .platform_data = &at73c213_data,
151 },
152 #endif
153 };
154
155
156 /*
157 * MACB Ethernet device
158 */
159 static struct at91_eth_data __initdata ek_macb_data = {
160 .phy_irq_pin = AT91_PIN_PA7,
161 .is_rmii = 1,
162 };
163
164
165 /*
166 * NAND flash
167 */
168 static struct mtd_partition __initdata ek_nand_partition[] = {
169 {
170 .name = "Partition 1",
171 .offset = 0,
172 .size = SZ_256K,
173 },
174 {
175 .name = "Partition 2",
176 .offset = MTDPART_OFS_NXTBLK,
177 .size = MTDPART_SIZ_FULL,
178 },
179 };
180
nand_partitions(int size,int * num_partitions)181 static 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
187 static struct atmel_nand_data __initdata ek_nand_data = {
188 .ale = 21,
189 .cle = 22,
190 // .det_pin = ... not connected
191 .rdy_pin = AT91_PIN_PC13,
192 .enable_pin = AT91_PIN_PC14,
193 .partition_info = nand_partitions,
194 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
195 .bus_width_16 = 1,
196 #else
197 .bus_width_16 = 0,
198 #endif
199 };
200
201 static struct sam9_smc_config __initdata ek_nand_smc_config = {
202 .ncs_read_setup = 0,
203 .nrd_setup = 1,
204 .ncs_write_setup = 0,
205 .nwe_setup = 1,
206
207 .ncs_read_pulse = 3,
208 .nrd_pulse = 3,
209 .ncs_write_pulse = 3,
210 .nwe_pulse = 3,
211
212 .read_cycle = 5,
213 .write_cycle = 5,
214
215 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
216 .tdf_cycles = 2,
217 };
218
ek_add_device_nand(void)219 static void __init ek_add_device_nand(void)
220 {
221 /* setup bus-width (8 or 16) */
222 if (ek_nand_data.bus_width_16)
223 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
224 else
225 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
226
227 /* configure chip-select 3 (NAND) */
228 sam9_smc_configure(3, &ek_nand_smc_config);
229
230 at91_add_device_nand(&ek_nand_data);
231 }
232
233
234 /*
235 * MCI (SD/MMC)
236 */
237 static struct at91_mmc_data __initdata ek_mmc_data = {
238 .slot_b = 1,
239 .wire4 = 1,
240 // .det_pin = ... not connected
241 // .wp_pin = ... not connected
242 // .vcc_pin = ... not connected
243 };
244
245
246 /*
247 * LEDs
248 */
249 static struct gpio_led ek_leds[] = {
250 { /* "bottom" led, green, userled1 to be defined */
251 .name = "ds5",
252 .gpio = AT91_PIN_PA6,
253 .active_low = 1,
254 .default_trigger = "none",
255 },
256 { /* "power" led, yellow */
257 .name = "ds1",
258 .gpio = AT91_PIN_PA9,
259 .default_trigger = "heartbeat",
260 }
261 };
262
263 /*
264 * I2C devices
265 */
266 static struct at24_platform_data at24c512 = {
267 .byte_len = SZ_512K / 8,
268 .page_size = 128,
269 .flags = AT24_FLAG_ADDR16,
270 };
271
272 static struct i2c_board_info __initdata ek_i2c_devices[] = {
273 {
274 I2C_BOARD_INFO("24c512", 0x50),
275 .platform_data = &at24c512,
276 },
277 /* more devices can be added using expansion connectors */
278 };
279
280
281 /*
282 * GPIO Buttons
283 */
284 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
285 static struct gpio_keys_button ek_buttons[] = {
286 {
287 .gpio = AT91_PIN_PA30,
288 .code = BTN_3,
289 .desc = "Button 3",
290 .active_low = 1,
291 .wakeup = 1,
292 },
293 {
294 .gpio = AT91_PIN_PA31,
295 .code = BTN_4,
296 .desc = "Button 4",
297 .active_low = 1,
298 .wakeup = 1,
299 }
300 };
301
302 static struct gpio_keys_platform_data ek_button_data = {
303 .buttons = ek_buttons,
304 .nbuttons = ARRAY_SIZE(ek_buttons),
305 };
306
307 static struct platform_device ek_button_device = {
308 .name = "gpio-keys",
309 .id = -1,
310 .num_resources = 0,
311 .dev = {
312 .platform_data = &ek_button_data,
313 }
314 };
315
ek_add_device_buttons(void)316 static void __init ek_add_device_buttons(void)
317 {
318 at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
319 at91_set_deglitch(AT91_PIN_PA30, 1);
320 at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
321 at91_set_deglitch(AT91_PIN_PA31, 1);
322
323 platform_device_register(&ek_button_device);
324 }
325 #else
ek_add_device_buttons(void)326 static void __init ek_add_device_buttons(void) {}
327 #endif
328
329
ek_board_init(void)330 static void __init ek_board_init(void)
331 {
332 /* Serial */
333 at91_add_device_serial();
334 /* USB Host */
335 at91_add_device_usbh(&ek_usbh_data);
336 /* USB Device */
337 at91_add_device_udc(&ek_udc_data);
338 /* SPI */
339 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
340 /* NAND */
341 ek_add_device_nand();
342 /* Ethernet */
343 at91_add_device_eth(&ek_macb_data);
344 /* MMC */
345 at91_add_device_mmc(0, &ek_mmc_data);
346 /* I2C */
347 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
348 /* SSC (to AT73C213) */
349 at73c213_set_clk(&at73c213_data);
350 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
351 /* LEDs */
352 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
353 /* Push Buttons */
354 ek_add_device_buttons();
355 }
356
357 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
358 /* Maintainer: Atmel */
359 .phys_io = AT91_BASE_SYS,
360 .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
361 .boot_params = AT91_SDRAM_BASE + 0x100,
362 .timer = &at91sam926x_timer,
363 .map_io = ek_map_io,
364 .init_irq = ek_init_irq,
365 .init_machine = ek_board_init,
366 MACHINE_END
367