summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/board-omap3beagle.c
blob: 928933ba28ce5a8cabf23e911f9ba76379973b45 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
/*
 * linux/arch/arm/mach-omap2/board-omap3beagle.c
 *
 * Copyright (C) 2008 Texas Instruments
 *
 * Modified from mach-omap2/board-3430sdp.c
 *
 * Initial code: Syed Mohammed Khasim
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/opp.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <linux/mmc/host.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <plat/board.h>
#include <plat/common.h>
#include <video/omapdss.h>
#include <video/omap-panel-dvi.h>
#include <plat/gpmc.h>
#include <plat/nand.h>
#include <plat/usb.h>
#include <plat/omap_device.h>

#include "mux.h"
#include "hsmmc.h"
#include "pm.h"
#include "common-board-devices.h"

/*
 * OMAP3 Beagle revision
 * Run time detection of Beagle revision is done by reading GPIO.
 * GPIO ID -
 *	AXBX	= GPIO173, GPIO172, GPIO171: 1 1 1
 *	C1_3	= GPIO173, GPIO172, GPIO171: 1 1 0
 *	C4	= GPIO173, GPIO172, GPIO171: 1 0 1
 *	XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
 *	XMC = GPIO173, GPIO172, GPIO171: 0 1 0
 */
enum {
	OMAP3BEAGLE_BOARD_UNKN = 0,
	OMAP3BEAGLE_BOARD_AXBX,
	OMAP3BEAGLE_BOARD_C1_3,
	OMAP3BEAGLE_BOARD_C4,
	OMAP3BEAGLE_BOARD_XM,
	OMAP3BEAGLE_BOARD_XMC,
};

static u8 omap3_beagle_version;

/*
 * Board-specific configuration
 * Defaults to BeagleBoard-xMC
 */
static struct {
	int mmc1_gpio_wp;
	int usb_pwr_level;
	int reset_gpio;
	int usr_button_gpio;
} beagle_config = {
	.mmc1_gpio_wp = -EINVAL,
	.usb_pwr_level = GPIOF_OUT_INIT_LOW,
	.reset_gpio = 129,
	.usr_button_gpio = 4,
};

static struct gpio omap3_beagle_rev_gpios[] __initdata = {
	{ 171, GPIOF_IN, "rev_id_0"    },
	{ 172, GPIOF_IN, "rev_id_1" },
	{ 173, GPIOF_IN, "rev_id_2"    },
};

static void __init omap3_beagle_init_rev(void)
{
	int ret;
	u16 beagle_rev = 0;

	omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
	omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
	omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);

	ret = gpio_request_array(omap3_beagle_rev_gpios,
				 ARRAY_SIZE(omap3_beagle_rev_gpios));
	if (ret < 0) {
		printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
		return;
	}

	beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
			| (gpio_get_value(173) << 2);

	gpio_free_array(omap3_beagle_rev_gpios,
			ARRAY_SIZE(omap3_beagle_rev_gpios));

	switch (beagle_rev) {
	case 7:
		printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
		beagle_config.mmc1_gpio_wp = 29;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 6:
		printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
		beagle_config.mmc1_gpio_wp = 23;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 5:
		printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
		beagle_config.mmc1_gpio_wp = 23;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 0:
		printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
		beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
		break;
	case 2:
		printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
		break;
	default:
		printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
	}
}

static struct mtd_partition omap3beagle_nand_partitions[] = {
	/* All the partition sizes are listed in terms of NAND block size */
	{
		.name		= "X-Loader",
		.offset		= 0,
		.size		= 4 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size		= 15 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot Env",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
		.size		= 1 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "Kernel",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size		= 32 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "File System",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size		= MTDPART_SIZ_FULL,
	},
};

/* DSS */

static int beagle_enable_dvi(struct omap_dss_device *dssdev)
{
	if (gpio_is_valid(dssdev->reset_gpio))
		gpio_set_value(dssdev->reset_gpio, 1);

	return 0;
}

static void beagle_disable_dvi(struct omap_dss_device *dssdev)
{
	if (gpio_is_valid(dssdev->reset_gpio))
		gpio_set_value(dssdev->reset_gpio, 0);
}

static struct panel_dvi_platform_data dvi_panel = {
	.platform_enable = beagle_enable_dvi,
	.platform_disable = beagle_disable_dvi,
	.i2c_bus_num = 3,
};

static struct omap_dss_device beagle_dvi_device = {
	.type = OMAP_DISPLAY_TYPE_DPI,
	.name = "dvi",
	.driver_name = "dvi",
	.data = &dvi_panel,
	.phy.dpi.data_lines = 24,
	.reset_gpio = -EINVAL,
};

static struct omap_dss_device beagle_tv_device = {
	.name = "tv",
	.driver_name = "venc",
	.type = OMAP_DISPLAY_TYPE_VENC,
	.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
};

static struct omap_dss_device *beagle_dss_devices[] = {
	&beagle_dvi_device,
	&beagle_tv_device,
};

static struct omap_dss_board_info beagle_dss_data = {
	.num_devices = ARRAY_SIZE(beagle_dss_devices),
	.devices = beagle_dss_devices,
	.default_device = &beagle_dvi_device,
};

static void __init beagle_display_init(void)
{
	int r;

	r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
			     "DVI reset");
	if (r < 0)
		printk(KERN_ERR "Unable to get DVI reset GPIO\n");
}

#include "sdram-micron-mt46h32m32lf-6.h"

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
		.gpio_wp	= -EINVAL,
	},
	{}	/* Terminator */
};

static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};

static struct regulator_consumer_supply beagle_vsim_supply[] = {
	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
};

static struct gpio_led gpio_leds[];

static int beagle_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	int r;

	if (beagle_config.mmc1_gpio_wp != -EINVAL)
		omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
	mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
	mmc[0].gpio_cd = gpio + 0;
	omap2_hsmmc_init(mmc);

	/*
	 * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
	 * high / others active low)
	 * DVI reset GPIO is different between beagle revisions
	 */
	/* Valid for all -xM revisions */
	if (cpu_is_omap3630()) {
		/*
		 * gpio + 1 on Xm controls the TFP410's enable line (active low)
		 * gpio + 2 control varies depending on the board rev as below:
		 * P7/P8 revisions(prototype): Camera EN
		 * A2+ revisions (production): LDO (DVI, serial, led blocks)
		 */
		r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
				     "nDVI_PWR_EN");
		if (r)
			pr_err("%s: unable to configure nDVI_PWR_EN\n",
				__func__);
		r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
				     "DVI_LDO_EN");
		if (r)
			pr_err("%s: unable to configure DVI_LDO_EN\n",
				__func__);
	} else {
		/*
		 * REVISIT: need ehci-omap hooks for external VBUS
		 * power switch and overcurrent detect
		 */
		if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
			pr_err("%s: unable to configure EHCI_nOC\n", __func__);
	}
	beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;

	gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
			"nEN_USB_PWR");

	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;

	return 0;
}

static struct twl4030_gpio_platform_data beagle_gpio_data = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.use_leds	= true,
	.pullups	= BIT(1),
	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
				| BIT(15) | BIT(16) | BIT(17),
	.setup		= beagle_twl_gpio_setup,
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data beagle_vmmc1 = {
	.constraints = {
		.min_uV			= 1850000,
		.max_uV			= 3150000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(beagle_vmmc1_supply),
	.consumer_supplies	= beagle_vmmc1_supply,
};

/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data beagle_vsim = {
	.constraints = {
		.min_uV			= 1800000,
		.max_uV			= 3000000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(beagle_vsim_supply),
	.consumer_supplies	= beagle_vsim_supply,
};

static struct twl4030_platform_data beagle_twldata = {
	/* platform_data for children goes here */
	.gpio		= &beagle_gpio_data,
	.vmmc1		= &beagle_vmmc1,
	.vsim		= &beagle_vsim,
};

static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
       {
               I2C_BOARD_INFO("eeprom", 0x50),
       },
};

static int __init omap3_beagle_i2c_init(void)
{
	omap3_pmic_get_config(&beagle_twldata,
			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);

	beagle_twldata.vpll2->constraints.name = "VDVI";

	omap3_pmic_init("twl4030", &beagle_twldata);
	/* Bus 3 is attached to the DVI port where devices like the pico DLP
	 * projector don't work reliably with 400kHz */
	omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
	return 0;
}

static struct gpio_led gpio_leds[] = {
	{
		.name			= "beagleboard::usr0",
		.default_trigger	= "heartbeat",
		.gpio			= 150,
	},
	{
		.name			= "beagleboard::usr1",
		.default_trigger	= "mmc0",
		.gpio			= 149,
	},
	{
		.name			= "beagleboard::pmu_stat",
		.gpio			= -EINVAL,	/* gets replaced */
		.active_low		= true,
	},
};

static struct gpio_led_platform_data gpio_led_info = {
	.leds		= gpio_leds,
	.num_leds	= ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_led_info,
	},
};

static struct gpio_keys_button gpio_buttons[] = {
	{
		.code			= BTN_EXTRA,
		/* Dynamically assigned depending on board */
		.gpio			= -EINVAL,
		.desc			= "user",
		.wakeup			= 1,
	},
};

static struct gpio_keys_platform_data gpio_key_info = {
	.buttons	= gpio_buttons,
	.nbuttons	= ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
	.name	= "gpio-keys",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_key_info,
	},
};

static void __init omap3_beagle_init_early(void)
{
	omap2_init_common_infrastructure();
	omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
				  mt46h32m32lf6_sdrc_params);
}

static void __init omap3_beagle_init_irq(void)
{
	omap3_init_irq();
}

static struct platform_device *omap3_beagle_devices[] __initdata = {
	&leds_gpio,
	&keys_gpio,
};

static const struct usbhs_omap_board_data usbhs_bdata __initconst = {

	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

	.phy_reset  = true,
	.reset_gpio_port[0]  = -EINVAL,
	.reset_gpio_port[1]  = 147,
	.reset_gpio_port[2]  = -EINVAL
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
	{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static void __init beagle_opp_init(void)
{
	int r = 0;

	/* Initialize the omap3 opp table */
	if (omap3_opp_init()) {
		pr_err("%s: opp default init failed\n", __func__);
		return;
	}

	/* Custom OPP enabled for all xM versions */
	if (cpu_is_omap3630()) {
		struct device *mpu_dev, *iva_dev;

		mpu_dev = omap2_get_mpuss_device();
		iva_dev = omap2_get_iva_device();

		if (!mpu_dev || !iva_dev) {
			pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
				__func__, mpu_dev, iva_dev);
			return;
		}
		/* Enable MPU 1GHz and lower opps */
		r = opp_enable(mpu_dev, 800000000);
		/* TODO: MPU 1GHz needs SR and ABB */

		/* Enable IVA 800MHz and lower opps */
		r |= opp_enable(iva_dev, 660000000);
		/* TODO: DSP 800MHz needs SR and ABB */
		if (r) {
			pr_err("%s: failed to enable higher opp %d\n",
				__func__, r);
			/*
			 * Cleanup - disable the higher freqs - we dont care
			 * about the results
			 */
			opp_disable(mpu_dev, 800000000);
			opp_disable(iva_dev, 660000000);
		}
	}
	return;
}

static void __init omap3_beagle_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
	omap3_beagle_init_rev();
	omap3_beagle_i2c_init();

	gpio_buttons[0].gpio = beagle_config.usr_button_gpio;

	platform_add_devices(omap3_beagle_devices,
			ARRAY_SIZE(omap3_beagle_devices));
	omap_display_init(&beagle_dss_data);
	omap_serial_init();

	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
	/* REVISIT leave DVI powered down until it's needed ... */
	gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");

	usb_musb_init(NULL);
	usbhs_init(&usbhs_bdata);
	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
			     ARRAY_SIZE(omap3beagle_nand_partitions));

	/* Ensure msecure is mux'd to be able to set the RTC. */
	omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);

	/* Ensure SDRC pins are mux'd for self-refresh */
	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);

	beagle_display_init();
	beagle_opp_init();
}

MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
	/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
	.atag_offset	= 0x100,
	.reserve	= omap_reserve,
	.map_io		= omap3_map_io,
	.init_early	= omap3_beagle_init_early,
	.init_irq	= omap3_beagle_init_irq,
	.init_machine	= omap3_beagle_init,
	.timer		= &omap3_secure_timer,
MACHINE_END