/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c

  1/*
  2 *  Copyright (C) 2005 SAN People
  3 *  Copyright (C) 2008 Atmel
  4 *  Copyright (C) 2009 Rob Emanuele
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU General Public License as published by
  8 * the Free Software Foundation; either version 2 of the License, or
  9 * (at your option) any later version.
 10 *
 11 * This program is distributed in the hope that it will be useful,
 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 * GNU General Public License for more details.
 15 *
 16 * You should have received a copy of the GNU General Public License
 17 * along with this program; if not, write to the Free Software
 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 19 */
 20
 21#include <linux/types.h>
 22#include <linux/init.h>
 23#include <linux/mm.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/clk.h>
 29
 30#include <mach/hardware.h>
 31#include <asm/setup.h>
 32#include <asm/mach-types.h>
 33#include <asm/irq.h>
 34
 35#include <asm/mach/arch.h>
 36#include <asm/mach/map.h>
 37#include <asm/mach/irq.h>
 38
 39#include <mach/board.h>
 40#include <mach/gpio.h>
 41#include <mach/at91sam9_smc.h>
 42
 43#include "sam9_smc.h"
 44#include "generic.h"
 45
 46
 47static void __init ek_map_io(void)
 48{
 49	/* Initialize processor: 18.432 MHz crystal */
 50	at91sam9260_initialize(18432000);
 51
 52	/* DGBU on ttyS0. (Rx & Tx only) */
 53	at91_register_uart(0, 0, 0);
 54
 55	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 56	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 57			   | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
 58			   | ATMEL_UART_RI);
 59
 60	/* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
 61	at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
 62
 63	/* set serial console to ttyS0 (ie, DBGU) */
 64	at91_set_serial_console(0);
 65}
 66
 67static void __init ek_init_irq(void)
 68{
 69	at91sam9260_init_interrupts(NULL);
 70}
 71
 72
 73/*
 74 * USB Host port
 75 */
 76static struct at91_usbh_data __initdata ek_usbh_data = {
 77	.ports		= 2,
 78};
 79
 80/*
 81 * USB Device port
 82 */
 83static struct at91_udc_data __initdata ek_udc_data = {
 84	.vbus_pin	= AT91_PIN_PC5,
 85	.pullup_pin	= 0,		/* pull-up driven by UDC */
 86};
 87
 88
 89/*
 90 * SPI devices.
 91 */
 92static struct spi_board_info ek_spi_devices[] = {
 93#if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
 94	{	/* DataFlash chip */
 95		.modalias	= "mtd_dataflash",
 96		.chip_select	= 1,
 97		.max_speed_hz	= 15 * 1000 * 1000,
 98		.bus_num	= 0,
 99	},
100#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
101	{	/* DataFlash card */
102		.modalias	= "mtd_dataflash",
103		.chip_select	= 0,
104		.max_speed_hz	= 15 * 1000 * 1000,
105		.bus_num	= 0,
106	},
107#endif
108#endif
109};
110
111
112/*
113 * MACB Ethernet device
114 */
115static struct at91_eth_data __initdata ek_macb_data = {
116	.phy_irq_pin	= AT91_PIN_PB0,
117	.is_rmii	= 1,
118};
119
120
121/*
122 * NAND flash
123 */
124static struct mtd_partition __initdata ek_nand_partition[] = {
125	{
126		.name   = "Bootstrap",
127		.offset = 0,
128		.size   = 4 * SZ_1M,
129	},
130	{
131		.name	= "Partition 1",
132		.offset	= MTDPART_OFS_NXTBLK,
133		.size	= 60 * SZ_1M,
134	},
135	{
136		.name	= "Partition 2",
137		.offset	= MTDPART_OFS_NXTBLK,
138		.size	= MTDPART_SIZ_FULL,
139	},
140};
141
142static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
143{
144	*num_partitions = ARRAY_SIZE(ek_nand_partition);
145	return ek_nand_partition;
146}
147
148/* det_pin is not connected */
149static struct atmel_nand_data __initdata ek_nand_data = {
150	.ale		= 21,
151	.cle		= 22,
152	.rdy_pin	= AT91_PIN_PC13,
153	.enable_pin	= AT91_PIN_PC14,
154	.partition_info	= nand_partitions,
155#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
156	.bus_width_16	= 1,
157#else
158	.bus_width_16	= 0,
159#endif
160};
161
162static struct sam9_smc_config __initdata ek_nand_smc_config = {
163	.ncs_read_setup		= 0,
164	.nrd_setup		= 2,
165	.ncs_write_setup	= 0,
166	.nwe_setup		= 2,
167
168	.ncs_read_pulse		= 4,
169	.nrd_pulse		= 4,
170	.ncs_write_pulse	= 4,
171	.nwe_pulse		= 4,
172
173	.read_cycle		= 7,
174	.write_cycle		= 7,
175
176	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
177	.tdf_cycles		= 3,
178};
179
180static void __init ek_add_device_nand(void)
181{
182	/* setup bus-width (8 or 16) */
183	if (ek_nand_data.bus_width_16)
184		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
185	else
186		ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
187
188	/* configure chip-select 3 (NAND) */
189	sam9_smc_configure(3, &ek_nand_smc_config);
190
191	at91_add_device_nand(&ek_nand_data);
192}
193
194
195/*
196 * MCI (SD/MMC)
197 * wp_pin is not connected
198 */
199#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
200static struct mci_platform_data __initdata ek_mmc_data = {
201	.slot[0] = {
202		.bus_width	= 4,
203		.detect_pin	= AT91_PIN_PC2,
204		.wp_pin		= -ENODEV,
205	},
206	.slot[1] = {
207		.bus_width	= 4,
208		.detect_pin	= AT91_PIN_PC9,
209		.wp_pin		= -ENODEV,
210	},
211
212};
213#else
214static struct at91_mmc_data __initdata ek_mmc_data = {
215	.slot_b		= 1,	/* Only one slot so use slot B */
216	.wire4		= 1,
217	.det_pin	= AT91_PIN_PC9,
218};
219#endif
220
221/*
222 * LEDs
223 */
224static struct gpio_led ek_leds[] = {
225	{	/* "bottom" led, green, userled1 to be defined */
226		.name			= "ds5",
227		.gpio			= AT91_PIN_PB8,
228		.active_low		= 1,
229		.default_trigger	= "none",
230	},
231	{	/* "power" led, yellow */
232		.name			= "ds1",
233		.gpio			= AT91_PIN_PB9,
234		.default_trigger	= "heartbeat",
235	}
236};
237
238static struct i2c_board_info __initdata ek_i2c_devices[] = {
239	{
240		I2C_BOARD_INFO("24c512", 0x50),
241	},
242};
243
244
245static void __init ek_board_init(void)
246{
247	/* Serial */
248	at91_add_device_serial();
249	/* USB Host */
250	at91_add_device_usbh(&ek_usbh_data);
251	/* USB Device */
252	at91_add_device_udc(&ek_udc_data);
253	/* SPI */
254	at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
255	/* NAND */
256	ek_add_device_nand();
257	/* Ethernet */
258	at91_add_device_eth(&ek_macb_data);
259	/* MMC */
260#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
261	at91_add_device_mci(0, &ek_mmc_data);
262#else
263	at91_add_device_mmc(0, &ek_mmc_data);
264#endif
265	/* I2C */
266	at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
267	/* LEDs */
268	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
269	/* PCK0 provides MCLK to the WM8731 */
270	at91_set_B_periph(AT91_PIN_PC1, 0);
271	/* SSC (for WM8731) */
272	at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
273}
274
275MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
276	/* Maintainer: Rob Emanuele */
277	.phys_io	= AT91_BASE_SYS,
278	.io_pg_offst	= (AT91_VA_BASE_SYS >> 18) & 0xfffc,
279	.boot_params	= AT91_SDRAM_BASE + 0x100,
280	.timer		= &at91sam926x_timer,
281	.map_io		= ek_map_io,
282	.init_irq	= ek_init_irq,
283	.init_machine	= ek_board_init,
284MACHINE_END