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/gpio.h>
24 #include <linux/init.h>
25 #include <linux/mm.h>
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/spi/spi.h>
29 #include <linux/spi/at73c213.h>
30 #include <linux/clk.h>
31 #include <linux/i2c/at24.h>
32 #include <linux/gpio_keys.h>
33 #include <linux/input.h>
34
35 #include <asm/setup.h>
36 #include <asm/mach-types.h>
37 #include <asm/irq.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/irq.h>
42
43 #include <mach/hardware.h>
44 #include <mach/board.h>
45 #include <mach/at91sam9_smc.h>
46 #include <mach/at91_shdwc.h>
47 #include <mach/system_rev.h>
48
49 #include "sam9_smc.h"
50 #include "generic.h"
51
52
ek_init_early(void)53 static void __init ek_init_early(void)
54 {
55 /* Initialize processor: 18.432 MHz crystal */
56 at91_initialize(18432000);
57
58 /* DBGU on ttyS0. (Rx & Tx only) */
59 at91_register_uart(0, 0, 0);
60
61 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
62 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
63 | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
64 | ATMEL_UART_RI);
65
66 /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
67 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
68
69 /* set serial console to ttyS0 (ie, DBGU) */
70 at91_set_serial_console(0);
71 }
72
73 /*
74 * USB Host port
75 */
76 static struct at91_usbh_data __initdata ek_usbh_data = {
77 .ports = 2,
78 .vbus_pin = {-EINVAL, -EINVAL},
79 .overcurrent_pin= {-EINVAL, -EINVAL},
80 };
81
82 /*
83 * USB Device port
84 */
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 */
88 };
89
90
91 /*
92 * Audio
93 */
94 static struct at73c213_board_info at73c213_data = {
95 .ssc_id = 0,
96 .shortname = "AT91SAM9260-EK external DAC",
97 };
98
99 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
at73c213_set_clk(struct at73c213_board_info * info)100 static void __init at73c213_set_clk(struct at73c213_board_info *info)
101 {
102 struct clk *pck0;
103 struct clk *plla;
104
105 pck0 = clk_get(NULL, "pck0");
106 plla = clk_get(NULL, "plla");
107
108 /* AT73C213 MCK Clock */
109 at91_set_B_periph(AT91_PIN_PC1, 0); /* PCK0 */
110
111 clk_set_parent(pck0, plla);
112 clk_put(plla);
113
114 info->dac_clk = pck0;
115 }
116 #else
at73c213_set_clk(struct at73c213_board_info * info)117 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
118 #endif
119
120 /*
121 * SPI devices.
122 */
123 static struct spi_board_info ek_spi_devices[] = {
124 #if !defined(CONFIG_MMC_AT91)
125 { /* DataFlash chip */
126 .modalias = "mtd_dataflash",
127 .chip_select = 1,
128 .max_speed_hz = 15 * 1000 * 1000,
129 .bus_num = 0,
130 },
131 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
132 { /* DataFlash card */
133 .modalias = "mtd_dataflash",
134 .chip_select = 0,
135 .max_speed_hz = 15 * 1000 * 1000,
136 .bus_num = 0,
137 },
138 #endif
139 #endif
140 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
141 { /* AT73C213 DAC */
142 .modalias = "at73c213",
143 .chip_select = 0,
144 .max_speed_hz = 10 * 1000 * 1000,
145 .bus_num = 1,
146 .mode = SPI_MODE_1,
147 .platform_data = &at73c213_data,
148 },
149 #endif
150 };
151
152
153 /*
154 * MACB Ethernet device
155 */
156 static struct macb_platform_data __initdata ek_macb_data = {
157 .phy_irq_pin = AT91_PIN_PA7,
158 .is_rmii = 1,
159 };
160
161
162 /*
163 * NAND flash
164 */
165 static struct mtd_partition __initdata ek_nand_partition[] = {
166 {
167 .name = "Partition 1",
168 .offset = 0,
169 .size = SZ_256K,
170 },
171 {
172 .name = "Partition 2",
173 .offset = MTDPART_OFS_NXTBLK,
174 .size = MTDPART_SIZ_FULL,
175 },
176 };
177
178 static struct atmel_nand_data __initdata ek_nand_data = {
179 .ale = 21,
180 .cle = 22,
181 .det_pin = -EINVAL,
182 .rdy_pin = AT91_PIN_PC13,
183 .enable_pin = AT91_PIN_PC14,
184 .parts = ek_nand_partition,
185 .num_parts = ARRAY_SIZE(ek_nand_partition),
186 };
187
188 static struct sam9_smc_config __initdata ek_nand_smc_config = {
189 .ncs_read_setup = 0,
190 .nrd_setup = 1,
191 .ncs_write_setup = 0,
192 .nwe_setup = 1,
193
194 .ncs_read_pulse = 3,
195 .nrd_pulse = 3,
196 .ncs_write_pulse = 3,
197 .nwe_pulse = 3,
198
199 .read_cycle = 5,
200 .write_cycle = 5,
201
202 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
203 .tdf_cycles = 2,
204 };
205
ek_add_device_nand(void)206 static void __init ek_add_device_nand(void)
207 {
208 ek_nand_data.bus_width_16 = board_have_nand_16bit();
209 /* setup bus-width (8 or 16) */
210 if (ek_nand_data.bus_width_16)
211 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
212 else
213 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
214
215 /* configure chip-select 3 (NAND) */
216 sam9_smc_configure(0, 3, &ek_nand_smc_config);
217
218 at91_add_device_nand(&ek_nand_data);
219 }
220
221
222 /*
223 * MCI (SD/MMC)
224 */
225 static struct at91_mmc_data __initdata ek_mmc_data = {
226 .slot_b = 1,
227 .wire4 = 1,
228 .det_pin = -EINVAL,
229 .wp_pin = -EINVAL,
230 .vcc_pin = -EINVAL,
231 };
232
233
234 /*
235 * LEDs
236 */
237 static struct gpio_led ek_leds[] = {
238 { /* "bottom" led, green, userled1 to be defined */
239 .name = "ds5",
240 .gpio = AT91_PIN_PA6,
241 .active_low = 1,
242 .default_trigger = "none",
243 },
244 { /* "power" led, yellow */
245 .name = "ds1",
246 .gpio = AT91_PIN_PA9,
247 .default_trigger = "heartbeat",
248 }
249 };
250
251 /*
252 * I2C devices
253 */
254 static struct at24_platform_data at24c512 = {
255 .byte_len = SZ_512K / 8,
256 .page_size = 128,
257 .flags = AT24_FLAG_ADDR16,
258 };
259
260 static struct i2c_board_info __initdata ek_i2c_devices[] = {
261 {
262 I2C_BOARD_INFO("24c512", 0x50),
263 .platform_data = &at24c512,
264 },
265 /* more devices can be added using expansion connectors */
266 };
267
268
269 /*
270 * GPIO Buttons
271 */
272 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
273 static struct gpio_keys_button ek_buttons[] = {
274 {
275 .gpio = AT91_PIN_PA30,
276 .code = BTN_3,
277 .desc = "Button 3",
278 .active_low = 1,
279 .wakeup = 1,
280 },
281 {
282 .gpio = AT91_PIN_PA31,
283 .code = BTN_4,
284 .desc = "Button 4",
285 .active_low = 1,
286 .wakeup = 1,
287 }
288 };
289
290 static struct gpio_keys_platform_data ek_button_data = {
291 .buttons = ek_buttons,
292 .nbuttons = ARRAY_SIZE(ek_buttons),
293 };
294
295 static struct platform_device ek_button_device = {
296 .name = "gpio-keys",
297 .id = -1,
298 .num_resources = 0,
299 .dev = {
300 .platform_data = &ek_button_data,
301 }
302 };
303
ek_add_device_buttons(void)304 static void __init ek_add_device_buttons(void)
305 {
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);
310
311 platform_device_register(&ek_button_device);
312 }
313 #else
ek_add_device_buttons(void)314 static void __init ek_add_device_buttons(void) {}
315 #endif
316
317
ek_board_init(void)318 static void __init ek_board_init(void)
319 {
320 /* Serial */
321 at91_add_device_serial();
322 /* USB Host */
323 at91_add_device_usbh(&ek_usbh_data);
324 /* USB Device */
325 at91_add_device_udc(&ek_udc_data);
326 /* SPI */
327 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
328 /* NAND */
329 ek_add_device_nand();
330 /* Ethernet */
331 at91_add_device_eth(&ek_macb_data);
332 /* MMC */
333 at91_add_device_mmc(0, &ek_mmc_data);
334 /* I2C */
335 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
336 /* SSC (to AT73C213) */
337 at73c213_set_clk(&at73c213_data);
338 at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
339 /* LEDs */
340 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
341 /* Push Buttons */
342 ek_add_device_buttons();
343 }
344
345 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
346 /* Maintainer: Atmel */
347 .timer = &at91sam926x_timer,
348 .map_io = at91_map_io,
349 .init_early = ek_init_early,
350 .init_irq = at91_init_irq_default,
351 .init_machine = ek_board_init,
352 MACHINE_END
353