1 /*
2 * Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
3 * taskit GmbH
4 *
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.
9 *
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.
14 *
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
18 */
19
20 #include <linux/mm.h>
21 #include <linux/platform_device.h>
22 #include <linux/gpio.h>
23 #include <linux/w1-gpio.h>
24
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27
28 #include <mach/at91sam9_smc.h>
29 #include <mach/hardware.h>
30
31 #include "at91_aic.h"
32 #include "board.h"
33 #include "sam9_smc.h"
34 #include "generic.h"
35 #include "gpio.h"
36
37
stamp9g20_init_early(void)38 void __init stamp9g20_init_early(void)
39 {
40 /* Initialize processor: 18.432 MHz crystal */
41 at91_initialize(18432000);
42 }
43
44 /*
45 * NAND flash
46 */
47 static struct atmel_nand_data __initdata nand_data = {
48 .ale = 21,
49 .cle = 22,
50 .rdy_pin = AT91_PIN_PC13,
51 .enable_pin = AT91_PIN_PC14,
52 .bus_width_16 = 0,
53 .det_pin = -EINVAL,
54 .ecc_mode = NAND_ECC_SOFT,
55 };
56
57 static struct sam9_smc_config __initdata nand_smc_config = {
58 .ncs_read_setup = 0,
59 .nrd_setup = 2,
60 .ncs_write_setup = 0,
61 .nwe_setup = 2,
62
63 .ncs_read_pulse = 4,
64 .nrd_pulse = 4,
65 .ncs_write_pulse = 4,
66 .nwe_pulse = 4,
67
68 .read_cycle = 7,
69 .write_cycle = 7,
70
71 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
72 .tdf_cycles = 3,
73 };
74
add_device_nand(void)75 static void __init add_device_nand(void)
76 {
77 /* configure chip-select 3 (NAND) */
78 sam9_smc_configure(0, 3, &nand_smc_config);
79
80 at91_add_device_nand(&nand_data);
81 }
82
83
84 /*
85 * MCI (SD/MMC)
86 * det_pin, wp_pin and vcc_pin are not connected
87 */
88 static struct mci_platform_data __initdata mmc_data = {
89 .slot[0] = {
90 .bus_width = 4,
91 .detect_pin = -1,
92 .wp_pin = -1,
93 },
94 };
95
96
97 /*
98 * USB Host port
99 */
100 static struct at91_usbh_data __initdata usbh_data = {
101 .ports = 2,
102 .vbus_pin = {-EINVAL, -EINVAL},
103 .overcurrent_pin= {-EINVAL, -EINVAL},
104 };
105
106
107 /*
108 * USB Device port
109 */
110 static struct at91_udc_data __initdata portuxg20_udc_data = {
111 .vbus_pin = AT91_PIN_PC7,
112 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
113 };
114
115 static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
116 .vbus_pin = AT91_PIN_PA22,
117 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
118 };
119
120
121 /*
122 * MACB Ethernet device
123 */
124 static struct macb_platform_data __initdata macb_data = {
125 .phy_irq_pin = AT91_PIN_PA28,
126 .is_rmii = 1,
127 };
128
129
130 /*
131 * LEDs
132 */
133 static struct gpio_led portuxg20_leds[] = {
134 {
135 .name = "LED2",
136 .gpio = AT91_PIN_PC5,
137 .default_trigger = "none",
138 }, {
139 .name = "LED3",
140 .gpio = AT91_PIN_PC4,
141 .default_trigger = "none",
142 }, {
143 .name = "LED4",
144 .gpio = AT91_PIN_PC10,
145 .default_trigger = "heartbeat",
146 }
147 };
148
149 static struct gpio_led stamp9g20evb_leds[] = {
150 {
151 .name = "D8",
152 .gpio = AT91_PIN_PB18,
153 .active_low = 1,
154 .default_trigger = "none",
155 }, {
156 .name = "D9",
157 .gpio = AT91_PIN_PB19,
158 .active_low = 1,
159 .default_trigger = "none",
160 }, {
161 .name = "D10",
162 .gpio = AT91_PIN_PB20,
163 .active_low = 1,
164 .default_trigger = "heartbeat",
165 }
166 };
167
168
169 /*
170 * SPI devices
171 */
172 static struct spi_board_info portuxg20_spi_devices[] = {
173 {
174 .modalias = "spidev",
175 .chip_select = 0,
176 .max_speed_hz = 1 * 1000 * 1000,
177 .bus_num = 0,
178 }, {
179 .modalias = "spidev",
180 .chip_select = 0,
181 .max_speed_hz = 1 * 1000 * 1000,
182 .bus_num = 1,
183 },
184 };
185
186
187 /*
188 * Dallas 1-Wire
189 */
190 static struct w1_gpio_platform_data w1_gpio_pdata = {
191 .pin = AT91_PIN_PA29,
192 .is_open_drain = 1,
193 .ext_pullup_enable_pin = -EINVAL,
194 };
195
196 static struct platform_device w1_device = {
197 .name = "w1-gpio",
198 .id = -1,
199 .dev.platform_data = &w1_gpio_pdata,
200 };
201
add_w1(void)202 void add_w1(void)
203 {
204 at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
205 at91_set_multi_drive(w1_gpio_pdata.pin, 1);
206 platform_device_register(&w1_device);
207 }
208
209
stamp9g20_board_init(void)210 void __init stamp9g20_board_init(void)
211 {
212 /* Serial */
213 /* DGBU on ttyS0. (Rx & Tx only) */
214 at91_register_uart(0, 0, 0);
215 at91_add_device_serial();
216 /* NAND */
217 add_device_nand();
218 /* MMC */
219 at91_add_device_mci(0, &mmc_data);
220 /* W1 */
221 add_w1();
222 }
223
portuxg20_board_init(void)224 static void __init portuxg20_board_init(void)
225 {
226 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
227 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
228 | ATMEL_UART_DTR | ATMEL_UART_DSR
229 | ATMEL_UART_DCD | ATMEL_UART_RI);
230
231 /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
232 at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
233
234 /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
235 at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
236
237 /* USART4 on ttyS5. (Rx, Tx only) */
238 at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
239
240 /* USART5 on ttyS6. (Rx, Tx only) */
241 at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
242 stamp9g20_board_init();
243 /* USB Host */
244 at91_add_device_usbh(&usbh_data);
245 /* USB Device */
246 at91_add_device_udc(&portuxg20_udc_data);
247 /* Ethernet */
248 at91_add_device_eth(&macb_data);
249 /* I2C */
250 at91_add_device_i2c(NULL, 0);
251 /* SPI */
252 at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
253 /* LEDs */
254 at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
255 }
256
stamp9g20evb_board_init(void)257 static void __init stamp9g20evb_board_init(void)
258 {
259 /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
260 at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
261 | ATMEL_UART_DTR | ATMEL_UART_DSR
262 | ATMEL_UART_DCD | ATMEL_UART_RI);
263 stamp9g20_board_init();
264 /* USB Host */
265 at91_add_device_usbh(&usbh_data);
266 /* USB Device */
267 at91_add_device_udc(&stamp9g20evb_udc_data);
268 /* Ethernet */
269 at91_add_device_eth(&macb_data);
270 /* I2C */
271 at91_add_device_i2c(NULL, 0);
272 /* LEDs */
273 at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
274 }
275
276 MACHINE_START(PORTUXG20, "taskit PortuxG20")
277 /* Maintainer: taskit GmbH */
278 .init_time = at91_init_time,
279 .map_io = at91_map_io,
280 .handle_irq = at91_aic_handle_irq,
281 .init_early = stamp9g20_init_early,
282 .init_irq = at91_init_irq_default,
283 .init_machine = portuxg20_board_init,
284 MACHINE_END
285
286 MACHINE_START(STAMP9G20, "taskit Stamp9G20")
287 /* Maintainer: taskit GmbH */
288 .init_time = at91_init_time,
289 .map_io = at91_map_io,
290 .handle_irq = at91_aic_handle_irq,
291 .init_early = stamp9g20_init_early,
292 .init_irq = at91_init_irq_default,
293 .init_machine = stamp9g20evb_board_init,
294 MACHINE_END
295