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/twl.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 <plat/board.h>
42 #include <plat/common.h>
43 #include <mach/gpio.h>
44 #include <plat/gpmc.h>
45 #include <mach/hardware.h>
46 #include <plat/nand.h>
50 #include "sdram-micron-mt46h32m32lf-6.h"
53 #define OVERO_GPIO_BT_XGATE 15
54 #define OVERO_GPIO_W2W_NRESET 16
55 #define OVERO_GPIO_PENDOWN 114
56 #define OVERO_GPIO_BT_NRESET 164
57 #define OVERO_GPIO_USBH_CPEN 168
58 #define OVERO_GPIO_USBH_NRESET 183
60 #define NAND_BLOCK_SIZE SZ_128K
62 #define OVERO_SMSC911X_CS 5
63 #define OVERO_SMSC911X_GPIO 176
64 #define OVERO_SMSC911X2_CS 4
65 #define OVERO_SMSC911X2_GPIO 65
67 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
68 defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
70 #include <plat/mcspi.h>
71 #include <linux/spi/spi.h>
72 #include <linux/spi/ads7846.h>
74 static struct omap2_mcspi_device_config ads7846_mcspi_config
= {
76 .single_channel
= 1, /* 0: slave, 1: master */
79 static int ads7846_get_pendown_state(void)
81 return !gpio_get_value(OVERO_GPIO_PENDOWN
);
84 static struct ads7846_platform_data ads7846_config
= {
92 .get_pendown_state
= ads7846_get_pendown_state
,
96 static struct spi_board_info overo_spi_board_info
[] __initdata
= {
98 .modalias
= "ads7846",
101 .max_speed_hz
= 1500000,
102 .controller_data
= &ads7846_mcspi_config
,
103 .irq
= OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN
),
104 .platform_data
= &ads7846_config
,
108 static void __init
overo_ads7846_init(void)
110 if ((gpio_request(OVERO_GPIO_PENDOWN
, "ADS7846_PENDOWN") == 0) &&
111 (gpio_direction_input(OVERO_GPIO_PENDOWN
) == 0)) {
112 gpio_export(OVERO_GPIO_PENDOWN
, 0);
114 printk(KERN_ERR
"could not obtain gpio for ADS7846_PENDOWN\n");
118 spi_register_board_info(overo_spi_board_info
,
119 ARRAY_SIZE(overo_spi_board_info
));
123 static inline void __init
overo_ads7846_init(void) { return; }
126 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
128 #include <linux/smsc911x.h>
130 static struct resource overo_smsc911x_resources
[] = {
132 .name
= "smsc911x-memory",
133 .flags
= IORESOURCE_MEM
,
136 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_LOWLEVEL
,
140 static struct resource overo_smsc911x2_resources
[] = {
142 .name
= "smsc911x2-memory",
143 .flags
= IORESOURCE_MEM
,
146 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_LOWLEVEL
,
150 static struct smsc911x_platform_config overo_smsc911x_config
= {
151 .irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_LOW
,
152 .irq_type
= SMSC911X_IRQ_TYPE_OPEN_DRAIN
,
153 .flags
= SMSC911X_USE_32BIT
,
154 .phy_interface
= PHY_INTERFACE_MODE_MII
,
157 static struct platform_device overo_smsc911x_device
= {
160 .num_resources
= ARRAY_SIZE(overo_smsc911x_resources
),
161 .resource
= overo_smsc911x_resources
,
163 .platform_data
= &overo_smsc911x_config
,
167 static struct platform_device overo_smsc911x2_device
= {
170 .num_resources
= ARRAY_SIZE(overo_smsc911x2_resources
),
171 .resource
= overo_smsc911x2_resources
,
173 .platform_data
= &overo_smsc911x_config
,
177 static struct platform_device
*smsc911x_devices
[] = {
178 &overo_smsc911x_device
,
179 &overo_smsc911x2_device
,
182 static inline void __init
overo_init_smsc911x(void)
184 unsigned long cs_mem_base
, cs_mem_base2
;
186 /* set up first smsc911x chip */
188 if (gpmc_cs_request(OVERO_SMSC911X_CS
, SZ_16M
, &cs_mem_base
) < 0) {
189 printk(KERN_ERR
"Failed request for GPMC mem for smsc911x\n");
193 overo_smsc911x_resources
[0].start
= cs_mem_base
+ 0x0;
194 overo_smsc911x_resources
[0].end
= cs_mem_base
+ 0xff;
196 if ((gpio_request(OVERO_SMSC911X_GPIO
, "SMSC911X IRQ") == 0) &&
197 (gpio_direction_input(OVERO_SMSC911X_GPIO
) == 0)) {
198 gpio_export(OVERO_SMSC911X_GPIO
, 0);
200 printk(KERN_ERR
"could not obtain gpio for SMSC911X IRQ\n");
204 overo_smsc911x_resources
[1].start
= OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO
);
205 overo_smsc911x_resources
[1].end
= 0;
207 /* set up second smsc911x chip */
209 if (gpmc_cs_request(OVERO_SMSC911X2_CS
, SZ_16M
, &cs_mem_base2
) < 0) {
210 printk(KERN_ERR
"Failed request for GPMC mem for smsc911x2\n");
214 overo_smsc911x2_resources
[0].start
= cs_mem_base2
+ 0x0;
215 overo_smsc911x2_resources
[0].end
= cs_mem_base2
+ 0xff;
217 if ((gpio_request(OVERO_SMSC911X2_GPIO
, "SMSC911X2 IRQ") == 0) &&
218 (gpio_direction_input(OVERO_SMSC911X2_GPIO
) == 0)) {
219 gpio_export(OVERO_SMSC911X2_GPIO
, 0);
221 printk(KERN_ERR
"could not obtain gpio for SMSC911X2 IRQ\n");
225 overo_smsc911x2_resources
[1].start
= OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO
);
226 overo_smsc911x2_resources
[1].end
= 0;
228 platform_add_devices(smsc911x_devices
, ARRAY_SIZE(smsc911x_devices
));
232 static inline void __init
overo_init_smsc911x(void) { return; }
235 static struct mtd_partition overo_nand_partitions
[] = {
238 .offset
= 0, /* Offset = 0x00000 */
239 .size
= 4 * NAND_BLOCK_SIZE
,
240 .mask_flags
= MTD_WRITEABLE
244 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x80000 */
245 .size
= 14 * NAND_BLOCK_SIZE
,
248 .name
= "uboot environment",
249 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x240000 */
250 .size
= 2 * NAND_BLOCK_SIZE
,
254 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x280000 */
255 .size
= 32 * NAND_BLOCK_SIZE
,
259 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x680000 */
260 .size
= MTDPART_SIZ_FULL
,
264 static struct omap_nand_platform_data overo_nand_data
= {
265 .parts
= overo_nand_partitions
,
266 .nr_parts
= ARRAY_SIZE(overo_nand_partitions
),
267 .dma_channel
= -1, /* disable DMA in OMAP NAND driver */
270 static void __init
overo_flash_init(void)
273 u8 nandcs
= GPMC_CS_NUM
+ 1;
275 /* find out the chip-select on which NAND exists */
276 while (cs
< GPMC_CS_NUM
) {
278 ret
= gpmc_cs_read_reg(cs
, GPMC_CS_CONFIG1
);
280 if ((ret
& 0xC00) == 0x800) {
281 printk(KERN_INFO
"Found NAND on CS%d\n", cs
);
282 if (nandcs
> GPMC_CS_NUM
)
288 if (nandcs
> GPMC_CS_NUM
) {
289 printk(KERN_INFO
"NAND: Unable to find configuration "
294 if (nandcs
< GPMC_CS_NUM
) {
295 overo_nand_data
.cs
= nandcs
;
297 printk(KERN_INFO
"Registering NAND on CS%d\n", nandcs
);
298 if (gpmc_nand_init(&overo_nand_data
) < 0)
299 printk(KERN_ERR
"Unable to register NAND device\n");
303 static struct omap2_hsmmc_info mmc
[] = {
316 .ocr_mask
= 0x00100000, /* 3.3V */
321 static struct regulator_consumer_supply overo_vmmc1_supply
= {
325 static int overo_twl_gpio_setup(struct device
*dev
,
326 unsigned gpio
, unsigned ngpio
)
328 omap2_hsmmc_init(mmc
);
330 overo_vmmc1_supply
.dev
= mmc
[0].dev
;
335 static struct twl4030_gpio_platform_data overo_gpio_data
= {
336 .gpio_base
= OMAP_MAX_GPIO_LINES
,
337 .irq_base
= TWL4030_GPIO_IRQ_BASE
,
338 .irq_end
= TWL4030_GPIO_IRQ_END
,
339 .setup
= overo_twl_gpio_setup
,
342 static struct twl4030_usb_data overo_usb_data
= {
343 .usb_mode
= T2_USB_MODE_ULPI
,
346 static struct regulator_init_data overo_vmmc1
= {
350 .valid_modes_mask
= REGULATOR_MODE_NORMAL
351 | REGULATOR_MODE_STANDBY
,
352 .valid_ops_mask
= REGULATOR_CHANGE_VOLTAGE
353 | REGULATOR_CHANGE_MODE
354 | REGULATOR_CHANGE_STATUS
,
356 .num_consumer_supplies
= 1,
357 .consumer_supplies
= &overo_vmmc1_supply
,
360 static struct twl4030_codec_audio_data overo_audio_data
= {
361 .audio_mclk
= 26000000,
364 static struct twl4030_codec_data overo_codec_data
= {
365 .audio_mclk
= 26000000,
366 .audio
= &overo_audio_data
,
369 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
371 static struct twl4030_platform_data overo_twldata
= {
372 .irq_base
= TWL4030_IRQ_BASE
,
373 .irq_end
= TWL4030_IRQ_END
,
374 .gpio
= &overo_gpio_data
,
375 .usb
= &overo_usb_data
,
376 .codec
= &overo_codec_data
,
377 .vmmc1
= &overo_vmmc1
,
380 static struct i2c_board_info __initdata overo_i2c_boardinfo
[] = {
382 I2C_BOARD_INFO("tps65950", 0x48),
383 .flags
= I2C_CLIENT_WAKE
,
384 .irq
= INT_34XX_SYS_NIRQ
,
385 .platform_data
= &overo_twldata
,
389 static int __init
overo_i2c_init(void)
391 omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo
,
392 ARRAY_SIZE(overo_i2c_boardinfo
));
393 /* i2c2 pins are used for gpio */
394 omap_register_i2c_bus(3, 400, NULL
, 0);
398 static struct platform_device overo_lcd_device
= {
403 static struct omap_lcd_config overo_lcd_config __initdata
= {
404 .ctrl_name
= "internal",
407 static struct omap_board_config_kernel overo_config
[] __initdata
= {
408 { OMAP_TAG_LCD
, &overo_lcd_config
},
411 static void __init
overo_init_irq(void)
413 omap_board_config
= overo_config
;
414 omap_board_config_size
= ARRAY_SIZE(overo_config
);
415 omap2_init_common_hw(mt46h32m32lf6_sdrc_params
,
416 mt46h32m32lf6_sdrc_params
);
421 static struct platform_device
*overo_devices
[] __initdata
= {
425 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst
= {
426 .port_mode
[0] = EHCI_HCD_OMAP_MODE_UNKNOWN
,
427 .port_mode
[1] = EHCI_HCD_OMAP_MODE_PHY
,
428 .port_mode
[2] = EHCI_HCD_OMAP_MODE_UNKNOWN
,
431 .reset_gpio_port
[0] = -EINVAL
,
432 .reset_gpio_port
[1] = OVERO_GPIO_USBH_NRESET
,
433 .reset_gpio_port
[2] = -EINVAL
436 #ifdef CONFIG_OMAP_MUX
437 static struct omap_board_mux board_mux
[] __initdata
= {
438 { .reg_offset
= OMAP_MUX_TERMINATOR
},
441 #define board_mux NULL
444 static struct omap_musb_board_data musb_board_data
= {
445 .interface_type
= MUSB_INTERFACE_ULPI
,
450 static void __init
overo_init(void)
452 omap3_mux_init(board_mux
, OMAP_PACKAGE_CBB
);
454 platform_add_devices(overo_devices
, ARRAY_SIZE(overo_devices
));
457 usb_musb_init(&musb_board_data
);
458 usb_ehci_init(&ehci_pdata
);
459 overo_ads7846_init();
460 overo_init_smsc911x();
462 /* Ensure SDRC pins are mux'd for self-refresh */
463 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT
);
464 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT
);
466 if ((gpio_request(OVERO_GPIO_W2W_NRESET
,
467 "OVERO_GPIO_W2W_NRESET") == 0) &&
468 (gpio_direction_output(OVERO_GPIO_W2W_NRESET
, 1) == 0)) {
469 gpio_export(OVERO_GPIO_W2W_NRESET
, 0);
470 gpio_set_value(OVERO_GPIO_W2W_NRESET
, 0);
472 gpio_set_value(OVERO_GPIO_W2W_NRESET
, 1);
474 printk(KERN_ERR
"could not obtain gpio for "
475 "OVERO_GPIO_W2W_NRESET\n");
478 if ((gpio_request(OVERO_GPIO_BT_XGATE
, "OVERO_GPIO_BT_XGATE") == 0) &&
479 (gpio_direction_output(OVERO_GPIO_BT_XGATE
, 0) == 0))
480 gpio_export(OVERO_GPIO_BT_XGATE
, 0);
482 printk(KERN_ERR
"could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
484 if ((gpio_request(OVERO_GPIO_BT_NRESET
, "OVERO_GPIO_BT_NRESET") == 0) &&
485 (gpio_direction_output(OVERO_GPIO_BT_NRESET
, 1) == 0)) {
486 gpio_export(OVERO_GPIO_BT_NRESET
, 0);
487 gpio_set_value(OVERO_GPIO_BT_NRESET
, 0);
489 gpio_set_value(OVERO_GPIO_BT_NRESET
, 1);
491 printk(KERN_ERR
"could not obtain gpio for "
492 "OVERO_GPIO_BT_NRESET\n");
495 if ((gpio_request(OVERO_GPIO_USBH_CPEN
, "OVERO_GPIO_USBH_CPEN") == 0) &&
496 (gpio_direction_output(OVERO_GPIO_USBH_CPEN
, 1) == 0))
497 gpio_export(OVERO_GPIO_USBH_CPEN
, 0);
499 printk(KERN_ERR
"could not obtain gpio for "
500 "OVERO_GPIO_USBH_CPEN\n");
503 MACHINE_START(OVERO
, "Gumstix Overo")
504 .phys_io
= 0x48000000,
505 .io_pg_offst
= ((0xfa000000) >> 18) & 0xfffc,
506 .boot_params
= 0x80000100,
507 .map_io
= omap3_map_io
,
508 .reserve
= omap_reserve
,
509 .init_irq
= overo_init_irq
,
510 .init_machine
= overo_init
,
511 .timer
= &omap_timer
,