2 * board-overo.c (Gumstix Overo)
4 * Initial code: Steve Sakoman <steve@sakoman.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * 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., 51 Franklin St, Fifth Floor, Boston, MA
22 #include <linux/clk.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/platform_device.h>
29 #include <linux/i2c/twl4030.h>
30 #include <linux/regulator/machine.h>
32 #include <linux/mtd/mtd.h>
33 #include <linux/mtd/nand.h>
34 #include <linux/mtd/partitions.h>
36 #include <asm/mach-types.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/flash.h>
39 #include <asm/mach/map.h>
41 #include <mach/board-overo.h>
42 #include <mach/board.h>
43 #include <mach/common.h>
44 #include <mach/gpio.h>
45 #include <mach/gpmc.h>
46 #include <mach/hardware.h>
47 #include <mach/nand.h>
50 #include "sdram-micron-mt46h32m32lf-6.h"
51 #include "twl4030-generic-scripts.h"
52 #include "mmc-twl4030.h"
54 #define NAND_BLOCK_SIZE SZ_128K
55 #define GPMC_CS0_BASE 0x60
56 #define GPMC_CS_SIZE 0x30
58 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
60 #include <linux/smsc911x.h>
62 static struct resource overo_smsc911x_resources[] = {
64 .name = "smsc911x-memory",
65 .flags = IORESOURCE_MEM,
68 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
72 static struct smsc911x_platform_config overo_smsc911x_config = {
73 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
74 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
75 .flags = SMSC911X_USE_32BIT ,
76 .phy_interface = PHY_INTERFACE_MODE_MII,
79 static struct platform_device overo_smsc911x_device = {
82 .num_resources = ARRAY_SIZE(overo_smsc911x_resources),
83 .resource = &overo_smsc911x_resources,
85 .platform_data = &overo_smsc911x_config,
89 static inline void __init overo_init_smsc911x(void)
91 unsigned long cs_mem_base;
93 if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
94 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
98 overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
99 overo_smsc911x_resources[0].end = cs_mem_base + 0xff;
101 if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
102 (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
103 gpio_export(OVERO_SMSC911X_GPIO, 0);
105 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
109 overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
110 overo_smsc911x_resources[1].end = 0;
112 platform_device_register(&overo_smsc911x_device);
116 static inline void __init overo_init_smsc911x(void) { return; }
119 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
120 defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
122 #include <mach/mcspi.h>
123 #include <linux/spi/spi.h>
124 #include <linux/spi/ads7846.h>
126 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
128 .single_channel = 1, /* 0: slave, 1: master */
132 static int ads7846_get_pendown_state(void)
134 return !gpio_get_value(OVERO_GPIO_PENDOWN);
137 static struct ads7846_platform_data ads7846_config = {
145 .get_pendown_state = ads7846_get_pendown_state,
149 static struct spi_board_info overo_spi_board_info[] __initdata = {
151 .modalias = "ads7846",
154 .max_speed_hz = 1500000,
155 .controller_data = &ads7846_mcspi_config,
156 .irq = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
157 .platform_data = &ads7846_config,
161 static void __init overo_ads7846_init(void)
163 if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
164 (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
165 gpio_export(OVERO_GPIO_PENDOWN, 0);
167 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
171 spi_register_board_info(overo_spi_board_info,
172 ARRAY_SIZE(overo_spi_board_info));
176 static inline void __init overo_ads7846_init(void) { return; }
179 static struct mtd_partition overo_nand_partitions[] = {
182 .offset = 0, /* Offset = 0x00000 */
183 .size = 4 * NAND_BLOCK_SIZE,
184 .mask_flags = MTD_WRITEABLE
188 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
189 .size = 14 * NAND_BLOCK_SIZE,
192 .name = "uboot environment",
193 .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
194 .size = 2 * NAND_BLOCK_SIZE,
198 .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
199 .size = 32 * NAND_BLOCK_SIZE,
203 .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
204 .size = MTDPART_SIZ_FULL,
208 static struct omap_nand_platform_data overo_nand_data = {
209 .parts = overo_nand_partitions,
210 .nr_parts = ARRAY_SIZE(overo_nand_partitions),
211 .dma_channel = -1, /* disable DMA in OMAP NAND driver */
214 static struct resource overo_nand_resource = {
215 .flags = IORESOURCE_MEM,
218 static struct platform_device overo_nand_device = {
219 .name = "omap2-nand",
222 .platform_data = &overo_nand_data,
225 .resource = &overo_nand_resource,
229 static void __init overo_flash_init(void)
232 u8 nandcs = GPMC_CS_NUM + 1;
234 u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
236 /* find out the chip-select on which NAND exists */
237 while (cs < GPMC_CS_NUM) {
239 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
241 if ((ret & 0xC00) == 0x800) {
242 printk(KERN_INFO "Found NAND on CS%d\n", cs);
243 if (nandcs > GPMC_CS_NUM)
249 if (nandcs > GPMC_CS_NUM) {
250 printk(KERN_INFO "NAND: Unable to find configuration "
255 if (nandcs < GPMC_CS_NUM) {
256 overo_nand_data.cs = nandcs;
257 overo_nand_data.gpmc_cs_baseaddr = (void *)
258 (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
259 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
261 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
262 if (platform_device_register(&overo_nand_device) < 0)
263 printk(KERN_ERR "Unable to register NAND device\n");
266 static struct omap_uart_config overo_uart_config __initdata = {
267 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
270 static struct twl4030_gpio_platform_data overo_gpio_data = {
271 .gpio_base = OMAP_MAX_GPIO_LINES,
272 .irq_base = TWL4030_GPIO_IRQ_BASE,
273 .irq_end = TWL4030_GPIO_IRQ_END,
276 static struct twl4030_usb_data overo_usb_data = {
277 .usb_mode = T2_USB_MODE_ULPI,
280 static struct regulator_init_data overo_vmmc1 = {
282 .valid_modes_mask = REGULATOR_MODE_NORMAL
283 | REGULATOR_MODE_STANDBY,
284 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
285 | REGULATOR_CHANGE_MODE
286 | REGULATOR_CHANGE_STATUS,
290 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
292 static struct twl4030_platform_data overo_twldata = {
293 .irq_base = TWL4030_IRQ_BASE,
294 .irq_end = TWL4030_IRQ_END,
295 .gpio = &overo_gpio_data,
296 .usb = &overo_usb_data,
297 .power = GENERIC3430_T2SCRIPTS_DATA,
298 .vmmc1 = &overo_vmmc1,
301 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
303 I2C_BOARD_INFO("tps65950", 0x48),
304 .flags = I2C_CLIENT_WAKE,
305 .irq = INT_34XX_SYS_NIRQ,
306 .platform_data = &overo_twldata,
310 static int __init overo_i2c_init(void)
312 omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
313 ARRAY_SIZE(overo_i2c_boardinfo));
314 /* i2c2 pins are used for gpio */
315 omap_register_i2c_bus(3, 400, NULL, 0);
319 static void __init overo_init_irq(void)
321 omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
326 static struct platform_device overo_lcd_device = {
331 static struct omap_lcd_config overo_lcd_config __initdata = {
332 .ctrl_name = "internal",
335 static struct omap_board_config_kernel overo_config[] __initdata = {
336 { OMAP_TAG_UART, &overo_uart_config },
337 { OMAP_TAG_LCD, &overo_lcd_config },
340 static struct platform_device *overo_devices[] __initdata = {
344 static struct twl4030_hsmmc_info mmc[] __initdata = {
361 static void __init overo_init(void)
364 platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
365 omap_board_config = overo_config;
366 omap_board_config_size = ARRAY_SIZE(overo_config);
368 twl4030_mmc_init(mmc);
372 overo_init_smsc911x();
373 overo_ads7846_init();
375 if ((gpio_request(OVERO_GPIO_W2W_NRESET,
376 "OVERO_GPIO_W2W_NRESET") == 0) &&
377 (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
378 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
379 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
381 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
383 printk(KERN_ERR "could not obtain gpio for "
384 "OVERO_GPIO_W2W_NRESET\n");
387 if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
388 (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
389 gpio_export(OVERO_GPIO_BT_XGATE, 0);
391 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
393 if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
394 (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
395 gpio_export(OVERO_GPIO_BT_NRESET, 0);
396 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
398 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
400 printk(KERN_ERR "could not obtain gpio for "
401 "OVERO_GPIO_BT_NRESET\n");
404 if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
405 (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
406 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
408 printk(KERN_ERR "could not obtain gpio for "
409 "OVERO_GPIO_USBH_CPEN\n");
411 if ((gpio_request(OVERO_GPIO_USBH_NRESET,
412 "OVERO_GPIO_USBH_NRESET") == 0) &&
413 (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
414 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
416 printk(KERN_ERR "could not obtain gpio for "
417 "OVERO_GPIO_USBH_NRESET\n");
420 static void __init overo_map_io(void)
422 omap2_set_globals_343x();
423 omap2_map_common_io();
426 MACHINE_START(OVERO, "Gumstix Overo")
427 .phys_io = 0x48000000,
428 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
429 .boot_params = 0x80000100,
430 .map_io = overo_map_io,
431 .init_irq = overo_init_irq,
432 .init_machine = overo_init,
433 .timer = &omap_timer,