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.h>
42 #include <mach/common.h>
43 #include <mach/gpio.h>
44 #include <mach/gpmc.h>
45 #include <mach/hardware.h>
46 #include <mach/nand.h>
49 #include "sdram-micron-mt46h32m32lf-6.h"
50 #include "twl4030-generic-scripts.h"
51 #include "mmc-twl4030.h"
53 #define OVERO_GPIO_BT_XGATE 15
54 #define OVERO_GPIO_W2W_NRESET 16
55 #define OVERO_GPIO_BT_NRESET 164
56 #define OVERO_GPIO_USBH_CPEN 168
57 #define OVERO_GPIO_USBH_NRESET 183
59 #define NAND_BLOCK_SIZE SZ_128K
60 #define GPMC_CS0_BASE 0x60
61 #define GPMC_CS_SIZE 0x30
63 #define OVERO_SMSC911X_CS 5
64 #define OVERO_SMSC911X_GPIO 176
66 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
67 defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
69 #include <mach/mcspi.h>
70 #include <linux/spi/spi.h>
71 #include <linux/spi/ads7846.h>
73 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
75 .single_channel = 1, /* 0: slave, 1: master */
78 static int ads7846_get_pendown_state(void)
80 return !gpio_get_value(OVERO_GPIO_PENDOWN);
83 static struct ads7846_platform_data ads7846_config = {
91 .get_pendown_state = ads7846_get_pendown_state,
95 static struct spi_board_info overo_spi_board_info[] __initdata = {
97 .modalias = "ads7846",
100 .max_speed_hz = 1500000,
101 .controller_data = &ads7846_mcspi_config,
102 .irq = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
103 .platform_data = &ads7846_config,
107 static void __init overo_ads7846_init(void)
109 if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
110 (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
111 gpio_export(OVERO_GPIO_PENDOWN, 0);
113 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
117 spi_register_board_info(overo_spi_board_info,
118 ARRAY_SIZE(overo_spi_board_info));
122 static inline void __init overo_ads7846_init(void) { return; }
125 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
127 #include <linux/smsc911x.h>
129 static struct resource overo_smsc911x_resources[] = {
131 .name = "smsc911x-memory",
132 .flags = IORESOURCE_MEM,
135 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
139 static struct smsc911x_platform_config overo_smsc911x_config = {
140 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
141 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
142 .flags = SMSC911X_USE_32BIT ,
143 .phy_interface = PHY_INTERFACE_MODE_MII,
146 static struct platform_device overo_smsc911x_device = {
149 .num_resources = ARRAY_SIZE(overo_smsc911x_resources),
150 .resource = &overo_smsc911x_resources,
152 .platform_data = &overo_smsc911x_config,
156 static inline void __init overo_init_smsc911x(void)
158 unsigned long cs_mem_base;
160 if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
161 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
165 overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
166 overo_smsc911x_resources[0].end = cs_mem_base + 0xff;
168 if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
169 (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
170 gpio_export(OVERO_SMSC911X_GPIO, 0);
172 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
176 overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
177 overo_smsc911x_resources[1].end = 0;
179 platform_device_register(&overo_smsc911x_device);
183 static inline void __init overo_init_smsc911x(void) { return; }
188 static struct mtd_partition overo_nand_partitions[] = {
191 .offset = 0, /* Offset = 0x00000 */
192 .size = 4 * NAND_BLOCK_SIZE,
193 .mask_flags = MTD_WRITEABLE
197 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
198 .size = 14 * NAND_BLOCK_SIZE,
201 .name = "uboot environment",
202 .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
203 .size = 2 * NAND_BLOCK_SIZE,
207 .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
208 .size = 32 * NAND_BLOCK_SIZE,
212 .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
213 .size = MTDPART_SIZ_FULL,
217 static struct omap_nand_platform_data overo_nand_data = {
218 .parts = overo_nand_partitions,
219 .nr_parts = ARRAY_SIZE(overo_nand_partitions),
220 .dma_channel = -1, /* disable DMA in OMAP NAND driver */
223 static struct resource overo_nand_resource = {
224 .flags = IORESOURCE_MEM,
227 static struct platform_device overo_nand_device = {
228 .name = "omap2-nand",
231 .platform_data = &overo_nand_data,
234 .resource = &overo_nand_resource,
238 static void __init overo_flash_init(void)
241 u8 nandcs = GPMC_CS_NUM + 1;
243 u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
245 /* find out the chip-select on which NAND exists */
246 while (cs < GPMC_CS_NUM) {
248 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
250 if ((ret & 0xC00) == 0x800) {
251 printk(KERN_INFO "Found NAND on CS%d\n", cs);
252 if (nandcs > GPMC_CS_NUM)
258 if (nandcs > GPMC_CS_NUM) {
259 printk(KERN_INFO "NAND: Unable to find configuration "
264 if (nandcs < GPMC_CS_NUM) {
265 overo_nand_data.cs = nandcs;
266 overo_nand_data.gpmc_cs_baseaddr = (void *)
267 (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
268 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
270 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
271 if (platform_device_register(&overo_nand_device) < 0)
272 printk(KERN_ERR "Unable to register NAND device\n");
275 static struct omap_uart_config overo_uart_config __initdata = {
276 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
279 static struct twl4030_hsmmc_info mmc[] = {
292 .ocr_mask = 0x00100000, /* 3.3V */
297 static struct regulator_consumer_supply overo_vmmc1_supply = {
301 static int overo_twl_gpio_setup(struct device *dev,
302 unsigned gpio, unsigned ngpio)
304 twl4030_mmc_init(mmc);
306 overo_vmmc1_supply.dev = mmc[0].dev;
311 static struct twl4030_gpio_platform_data overo_gpio_data = {
312 .gpio_base = OMAP_MAX_GPIO_LINES,
313 .irq_base = TWL4030_GPIO_IRQ_BASE,
314 .irq_end = TWL4030_GPIO_IRQ_END,
315 .setup = overo_twl_gpio_setup,
318 static struct twl4030_usb_data overo_usb_data = {
319 .usb_mode = T2_USB_MODE_ULPI,
322 static struct regulator_init_data overo_vmmc1 = {
326 .valid_modes_mask = REGULATOR_MODE_NORMAL
327 | REGULATOR_MODE_STANDBY,
328 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
329 | REGULATOR_CHANGE_MODE
330 | REGULATOR_CHANGE_STATUS,
332 .num_consumer_supplies = 1,
333 .consumer_supplies = &overo_vmmc1_supply,
336 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
338 static struct twl4030_platform_data overo_twldata = {
339 .irq_base = TWL4030_IRQ_BASE,
340 .irq_end = TWL4030_IRQ_END,
341 .gpio = &overo_gpio_data,
342 .usb = &overo_usb_data,
343 .power = GENERIC3430_T2SCRIPTS_DATA,
344 .vmmc1 = &overo_vmmc1,
347 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
349 I2C_BOARD_INFO("tps65950", 0x48),
350 .flags = I2C_CLIENT_WAKE,
351 .irq = INT_34XX_SYS_NIRQ,
352 .platform_data = &overo_twldata,
356 static int __init overo_i2c_init(void)
358 omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
359 ARRAY_SIZE(overo_i2c_boardinfo));
360 /* i2c2 pins are used for gpio */
361 omap_register_i2c_bus(3, 400, NULL, 0);
365 static void __init overo_init_irq(void)
367 omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
372 static struct platform_device overo_lcd_device = {
377 static struct omap_lcd_config overo_lcd_config __initdata = {
378 .ctrl_name = "internal",
381 static struct omap_board_config_kernel overo_config[] __initdata = {
382 { OMAP_TAG_UART, &overo_uart_config },
383 { OMAP_TAG_LCD, &overo_lcd_config },
386 static struct platform_device *overo_devices[] __initdata = {
390 static void __init overo_init(void)
393 platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
394 omap_board_config = overo_config;
395 omap_board_config_size = ARRAY_SIZE(overo_config);
400 overo_init_smsc911x();
401 overo_ads7846_init();
402 overo_init_smsc911x();
404 if ((gpio_request(OVERO_GPIO_W2W_NRESET,
405 "OVERO_GPIO_W2W_NRESET") == 0) &&
406 (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
407 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
408 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
410 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
412 printk(KERN_ERR "could not obtain gpio for "
413 "OVERO_GPIO_W2W_NRESET\n");
416 if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
417 (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
418 gpio_export(OVERO_GPIO_BT_XGATE, 0);
420 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
422 if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
423 (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
424 gpio_export(OVERO_GPIO_BT_NRESET, 0);
425 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
427 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
429 printk(KERN_ERR "could not obtain gpio for "
430 "OVERO_GPIO_BT_NRESET\n");
433 if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
434 (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
435 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
437 printk(KERN_ERR "could not obtain gpio for "
438 "OVERO_GPIO_USBH_CPEN\n");
440 if ((gpio_request(OVERO_GPIO_USBH_NRESET,
441 "OVERO_GPIO_USBH_NRESET") == 0) &&
442 (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
443 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
445 printk(KERN_ERR "could not obtain gpio for "
446 "OVERO_GPIO_USBH_NRESET\n");
449 static void __init overo_map_io(void)
451 omap2_set_globals_343x();
452 omap2_map_common_io();
455 MACHINE_START(OVERO, "Gumstix Overo")
456 .phys_io = 0x48000000,
457 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
458 .boot_params = 0x80000100,
459 .map_io = overo_map_io,
460 .init_irq = overo_init_irq,
461 .init_machine = overo_init,
462 .timer = &omap_timer,