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
61 #define GPMC_CS0_BASE 0x60
62 #define GPMC_CS_SIZE 0x30
64 #define OVERO_SMSC911X_CS 5
65 #define OVERO_SMSC911X_GPIO 176
66 #define OVERO_SMSC911X2_CS 4
67 #define OVERO_SMSC911X2_GPIO 65
69 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
70 defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
72 #include <plat/mcspi.h>
73 #include <linux/spi/spi.h>
74 #include <linux/spi/ads7846.h>
76 static struct omap2_mcspi_device_config ads7846_mcspi_config
= {
78 .single_channel
= 1, /* 0: slave, 1: master */
81 static int ads7846_get_pendown_state(void)
83 return !gpio_get_value(OVERO_GPIO_PENDOWN
);
86 static struct ads7846_platform_data ads7846_config
= {
94 .get_pendown_state
= ads7846_get_pendown_state
,
98 static struct spi_board_info overo_spi_board_info
[] __initdata
= {
100 .modalias
= "ads7846",
103 .max_speed_hz
= 1500000,
104 .controller_data
= &ads7846_mcspi_config
,
105 .irq
= OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN
),
106 .platform_data
= &ads7846_config
,
110 static void __init
overo_ads7846_init(void)
112 if ((gpio_request(OVERO_GPIO_PENDOWN
, "ADS7846_PENDOWN") == 0) &&
113 (gpio_direction_input(OVERO_GPIO_PENDOWN
) == 0)) {
114 gpio_export(OVERO_GPIO_PENDOWN
, 0);
116 printk(KERN_ERR
"could not obtain gpio for ADS7846_PENDOWN\n");
120 spi_register_board_info(overo_spi_board_info
,
121 ARRAY_SIZE(overo_spi_board_info
));
125 static inline void __init
overo_ads7846_init(void) { return; }
128 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
130 #include <linux/smsc911x.h>
132 static struct resource overo_smsc911x_resources
[] = {
134 .name
= "smsc911x-memory",
135 .flags
= IORESOURCE_MEM
,
138 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_LOWLEVEL
,
142 static struct resource overo_smsc911x2_resources
[] = {
144 .name
= "smsc911x2-memory",
145 .flags
= IORESOURCE_MEM
,
148 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_LOWLEVEL
,
152 static struct smsc911x_platform_config overo_smsc911x_config
= {
153 .irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_LOW
,
154 .irq_type
= SMSC911X_IRQ_TYPE_OPEN_DRAIN
,
155 .flags
= SMSC911X_USE_32BIT
,
156 .phy_interface
= PHY_INTERFACE_MODE_MII
,
159 static struct platform_device overo_smsc911x_device
= {
162 .num_resources
= ARRAY_SIZE(overo_smsc911x_resources
),
163 .resource
= overo_smsc911x_resources
,
165 .platform_data
= &overo_smsc911x_config
,
169 static inline void __init
overo_init_smsc911x(void)
171 unsigned long cs_mem_base
;
173 if (gpmc_cs_request(OVERO_SMSC911X_CS
, SZ_16M
, &cs_mem_base
) < 0) {
174 printk(KERN_ERR
"Failed request for GPMC mem for smsc911x\n");
178 overo_smsc911x_resources
[0].start
= cs_mem_base
+ 0x0;
179 overo_smsc911x_resources
[0].end
= cs_mem_base
+ 0xff;
181 if ((gpio_request(OVERO_SMSC911X_GPIO
, "SMSC911X IRQ") == 0) &&
182 (gpio_direction_input(OVERO_SMSC911X_GPIO
) == 0)) {
183 gpio_export(OVERO_SMSC911X_GPIO
, 0);
185 printk(KERN_ERR
"could not obtain gpio for SMSC911X IRQ\n");
189 overo_smsc911x_resources
[1].start
= OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO
);
190 overo_smsc911x_resources
[1].end
= 0;
192 platform_device_register(&overo_smsc911x_device
);
196 static inline void __init
overo_init_smsc911x(void) { return; }
199 static struct mtd_partition overo_nand_partitions
[] = {
202 .offset
= 0, /* Offset = 0x00000 */
203 .size
= 4 * NAND_BLOCK_SIZE
,
204 .mask_flags
= MTD_WRITEABLE
208 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x80000 */
209 .size
= 14 * NAND_BLOCK_SIZE
,
212 .name
= "uboot environment",
213 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x240000 */
214 .size
= 2 * NAND_BLOCK_SIZE
,
218 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x280000 */
219 .size
= 32 * NAND_BLOCK_SIZE
,
223 .offset
= MTDPART_OFS_APPEND
, /* Offset = 0x680000 */
224 .size
= MTDPART_SIZ_FULL
,
228 static struct omap_nand_platform_data overo_nand_data
= {
229 .parts
= overo_nand_partitions
,
230 .nr_parts
= ARRAY_SIZE(overo_nand_partitions
),
231 .dma_channel
= -1, /* disable DMA in OMAP NAND driver */
234 static struct resource overo_nand_resource
= {
235 .flags
= IORESOURCE_MEM
,
238 static struct platform_device overo_nand_device
= {
239 .name
= "omap2-nand",
242 .platform_data
= &overo_nand_data
,
245 .resource
= &overo_nand_resource
,
249 static void __init
overo_flash_init(void)
252 u8 nandcs
= GPMC_CS_NUM
+ 1;
254 u32 gpmc_base_add
= OMAP34XX_GPMC_VIRT
;
256 /* find out the chip-select on which NAND exists */
257 while (cs
< GPMC_CS_NUM
) {
259 ret
= gpmc_cs_read_reg(cs
, GPMC_CS_CONFIG1
);
261 if ((ret
& 0xC00) == 0x800) {
262 printk(KERN_INFO
"Found NAND on CS%d\n", cs
);
263 if (nandcs
> GPMC_CS_NUM
)
269 if (nandcs
> GPMC_CS_NUM
) {
270 printk(KERN_INFO
"NAND: Unable to find configuration "
275 if (nandcs
< GPMC_CS_NUM
) {
276 overo_nand_data
.cs
= nandcs
;
277 overo_nand_data
.gpmc_cs_baseaddr
= (void *)
278 (gpmc_base_add
+ GPMC_CS0_BASE
+ nandcs
* GPMC_CS_SIZE
);
279 overo_nand_data
.gpmc_baseaddr
= (void *) (gpmc_base_add
);
281 printk(KERN_INFO
"Registering NAND on CS%d\n", nandcs
);
282 if (platform_device_register(&overo_nand_device
) < 0)
283 printk(KERN_ERR
"Unable to register NAND device\n");
287 static struct omap2_hsmmc_info mmc
[] = {
300 .ocr_mask
= 0x00100000, /* 3.3V */
305 static struct regulator_consumer_supply overo_vmmc1_supply
= {
309 static int overo_twl_gpio_setup(struct device
*dev
,
310 unsigned gpio
, unsigned ngpio
)
312 omap2_hsmmc_init(mmc
);
314 overo_vmmc1_supply
.dev
= mmc
[0].dev
;
319 static struct twl4030_gpio_platform_data overo_gpio_data
= {
320 .gpio_base
= OMAP_MAX_GPIO_LINES
,
321 .irq_base
= TWL4030_GPIO_IRQ_BASE
,
322 .irq_end
= TWL4030_GPIO_IRQ_END
,
323 .setup
= overo_twl_gpio_setup
,
326 static struct twl4030_usb_data overo_usb_data
= {
327 .usb_mode
= T2_USB_MODE_ULPI
,
330 static struct regulator_init_data overo_vmmc1
= {
334 .valid_modes_mask
= REGULATOR_MODE_NORMAL
335 | REGULATOR_MODE_STANDBY
,
336 .valid_ops_mask
= REGULATOR_CHANGE_VOLTAGE
337 | REGULATOR_CHANGE_MODE
338 | REGULATOR_CHANGE_STATUS
,
340 .num_consumer_supplies
= 1,
341 .consumer_supplies
= &overo_vmmc1_supply
,
344 static struct twl4030_codec_audio_data overo_audio_data
= {
345 .audio_mclk
= 26000000,
348 static struct twl4030_codec_data overo_codec_data
= {
349 .audio_mclk
= 26000000,
350 .audio
= &overo_audio_data
,
353 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
355 static struct twl4030_platform_data overo_twldata
= {
356 .irq_base
= TWL4030_IRQ_BASE
,
357 .irq_end
= TWL4030_IRQ_END
,
358 .gpio
= &overo_gpio_data
,
359 .usb
= &overo_usb_data
,
360 .codec
= &overo_codec_data
,
361 .vmmc1
= &overo_vmmc1
,
364 static struct i2c_board_info __initdata overo_i2c_boardinfo
[] = {
366 I2C_BOARD_INFO("tps65950", 0x48),
367 .flags
= I2C_CLIENT_WAKE
,
368 .irq
= INT_34XX_SYS_NIRQ
,
369 .platform_data
= &overo_twldata
,
373 static int __init
overo_i2c_init(void)
375 omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo
,
376 ARRAY_SIZE(overo_i2c_boardinfo
));
377 /* i2c2 pins are used for gpio */
378 omap_register_i2c_bus(3, 400, NULL
, 0);
382 static struct platform_device overo_lcd_device
= {
387 static struct omap_lcd_config overo_lcd_config __initdata
= {
388 .ctrl_name
= "internal",
391 static struct omap_board_config_kernel overo_config
[] __initdata
= {
392 { OMAP_TAG_LCD
, &overo_lcd_config
},
395 static void __init
overo_init_irq(void)
397 omap_board_config
= overo_config
;
398 omap_board_config_size
= ARRAY_SIZE(overo_config
);
399 omap2_init_common_hw(mt46h32m32lf6_sdrc_params
,
400 mt46h32m32lf6_sdrc_params
);
405 static struct platform_device
*overo_devices
[] __initdata
= {
409 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst
= {
410 .port_mode
[0] = EHCI_HCD_OMAP_MODE_UNKNOWN
,
411 .port_mode
[1] = EHCI_HCD_OMAP_MODE_PHY
,
412 .port_mode
[2] = EHCI_HCD_OMAP_MODE_UNKNOWN
,
415 .reset_gpio_port
[0] = -EINVAL
,
416 .reset_gpio_port
[1] = OVERO_GPIO_USBH_NRESET
,
417 .reset_gpio_port
[2] = -EINVAL
420 #ifdef CONFIG_OMAP_MUX
421 static struct omap_board_mux board_mux
[] __initdata
= {
422 { .reg_offset
= OMAP_MUX_TERMINATOR
},
425 #define board_mux NULL
428 static struct omap_musb_board_data musb_board_data
= {
429 .interface_type
= MUSB_INTERFACE_ULPI
,
434 static void __init
overo_init(void)
436 omap3_mux_init(board_mux
, OMAP_PACKAGE_CBB
);
438 platform_add_devices(overo_devices
, ARRAY_SIZE(overo_devices
));
441 usb_musb_init(&musb_board_data
);
442 usb_ehci_init(&ehci_pdata
);
443 overo_ads7846_init();
444 overo_init_smsc911x();
446 /* Ensure SDRC pins are mux'd for self-refresh */
447 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT
);
448 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT
);
450 if ((gpio_request(OVERO_GPIO_W2W_NRESET
,
451 "OVERO_GPIO_W2W_NRESET") == 0) &&
452 (gpio_direction_output(OVERO_GPIO_W2W_NRESET
, 1) == 0)) {
453 gpio_export(OVERO_GPIO_W2W_NRESET
, 0);
454 gpio_set_value(OVERO_GPIO_W2W_NRESET
, 0);
456 gpio_set_value(OVERO_GPIO_W2W_NRESET
, 1);
458 printk(KERN_ERR
"could not obtain gpio for "
459 "OVERO_GPIO_W2W_NRESET\n");
462 if ((gpio_request(OVERO_GPIO_BT_XGATE
, "OVERO_GPIO_BT_XGATE") == 0) &&
463 (gpio_direction_output(OVERO_GPIO_BT_XGATE
, 0) == 0))
464 gpio_export(OVERO_GPIO_BT_XGATE
, 0);
466 printk(KERN_ERR
"could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
468 if ((gpio_request(OVERO_GPIO_BT_NRESET
, "OVERO_GPIO_BT_NRESET") == 0) &&
469 (gpio_direction_output(OVERO_GPIO_BT_NRESET
, 1) == 0)) {
470 gpio_export(OVERO_GPIO_BT_NRESET
, 0);
471 gpio_set_value(OVERO_GPIO_BT_NRESET
, 0);
473 gpio_set_value(OVERO_GPIO_BT_NRESET
, 1);
475 printk(KERN_ERR
"could not obtain gpio for "
476 "OVERO_GPIO_BT_NRESET\n");
479 if ((gpio_request(OVERO_GPIO_USBH_CPEN
, "OVERO_GPIO_USBH_CPEN") == 0) &&
480 (gpio_direction_output(OVERO_GPIO_USBH_CPEN
, 1) == 0))
481 gpio_export(OVERO_GPIO_USBH_CPEN
, 0);
483 printk(KERN_ERR
"could not obtain gpio for "
484 "OVERO_GPIO_USBH_CPEN\n");
487 static void __init
overo_map_io(void)
489 omap2_set_globals_343x();
490 omap34xx_map_common_io();
493 MACHINE_START(OVERO
, "Gumstix Overo")
494 .phys_io
= 0x48000000,
495 .io_pg_offst
= ((0xfa000000) >> 18) & 0xfffc,
496 .boot_params
= 0x80000100,
497 .map_io
= overo_map_io
,
498 .reserve
= omap_reserve
,
499 .init_irq
= overo_init_irq
,
500 .init_machine
= overo_init
,
501 .timer
= &omap_timer
,