1 /*
2 * linux/arch/arm/mach-omap2/board-omap3beagle.c
3 *
4 * Copyright (C) 2008 Texas Instruments
5 *
6 * Modified from mach-omap2/board-3430sdp.c
7 *
8 * Initial code: Syed Mohammed Khasim
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/err.h>
20 #include <linux/clk.h>
21 #include <linux/io.h>
22 #include <linux/leds.h>
23 #include <linux/gpio.h>
24 #include <linux/input.h>
25 #include <linux/gpio_keys.h>
26 #include <linux/opp.h>
27
28 #include <linux/mtd/mtd.h>
29 #include <linux/mtd/partitions.h>
30 #include <linux/mtd/nand.h>
31 #include <linux/mmc/host.h>
32
33 #include <linux/regulator/machine.h>
34 #include <linux/i2c/twl.h>
35
36 #include <mach/hardware.h>
37 #include <asm/mach-types.h>
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40 #include <asm/mach/flash.h>
41
42 #include <plat/board.h>
43 #include "common.h"
44 #include <video/omapdss.h>
45 #include <video/omap-panel-dvi.h>
46 #include <plat/gpmc.h>
47 #include <plat/nand.h>
48 #include <plat/usb.h>
49 #include <plat/omap_device.h>
50
51 #include "mux.h"
52 #include "hsmmc.h"
53 #include "pm.h"
54 #include "common-board-devices.h"
55
56 /*
57 * OMAP3 Beagle revision
58 * Run time detection of Beagle revision is done by reading GPIO.
59 * GPIO ID -
60 * AXBX = GPIO173, GPIO172, GPIO171: 1 1 1
61 * C1_3 = GPIO173, GPIO172, GPIO171: 1 1 0
62 * C4 = GPIO173, GPIO172, GPIO171: 1 0 1
63 * XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
64 * XMC = GPIO173, GPIO172, GPIO171: 0 1 0
65 */
66 enum {
67 OMAP3BEAGLE_BOARD_UNKN = 0,
68 OMAP3BEAGLE_BOARD_AXBX,
69 OMAP3BEAGLE_BOARD_C1_3,
70 OMAP3BEAGLE_BOARD_C4,
71 OMAP3BEAGLE_BOARD_XM,
72 OMAP3BEAGLE_BOARD_XMC,
73 };
74
75 static u8 omap3_beagle_version;
76
77 /*
78 * Board-specific configuration
79 * Defaults to BeagleBoard-xMC
80 */
81 static struct {
82 int mmc1_gpio_wp;
83 int usb_pwr_level;
84 int reset_gpio;
85 int usr_button_gpio;
86 } beagle_config = {
87 .mmc1_gpio_wp = -EINVAL,
88 .usb_pwr_level = GPIOF_OUT_INIT_LOW,
89 .reset_gpio = 129,
90 .usr_button_gpio = 4,
91 };
92
93 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
94 { 171, GPIOF_IN, "rev_id_0" },
95 { 172, GPIOF_IN, "rev_id_1" },
96 { 173, GPIOF_IN, "rev_id_2" },
97 };
98
omap3_beagle_init_rev(void)99 static void __init omap3_beagle_init_rev(void)
100 {
101 int ret;
102 u16 beagle_rev = 0;
103
104 omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
105 omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
106 omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
107
108 ret = gpio_request_array(omap3_beagle_rev_gpios,
109 ARRAY_SIZE(omap3_beagle_rev_gpios));
110 if (ret < 0) {
111 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
112 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
113 return;
114 }
115
116 beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
117 | (gpio_get_value(173) << 2);
118
119 gpio_free_array(omap3_beagle_rev_gpios,
120 ARRAY_SIZE(omap3_beagle_rev_gpios));
121
122 switch (beagle_rev) {
123 case 7:
124 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
125 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
126 beagle_config.mmc1_gpio_wp = 29;
127 beagle_config.reset_gpio = 170;
128 beagle_config.usr_button_gpio = 7;
129 break;
130 case 6:
131 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
132 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
133 beagle_config.mmc1_gpio_wp = 23;
134 beagle_config.reset_gpio = 170;
135 beagle_config.usr_button_gpio = 7;
136 break;
137 case 5:
138 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
139 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
140 beagle_config.mmc1_gpio_wp = 23;
141 beagle_config.reset_gpio = 170;
142 beagle_config.usr_button_gpio = 7;
143 break;
144 case 0:
145 printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
146 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
147 beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
148 break;
149 case 2:
150 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
151 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
152 break;
153 default:
154 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
155 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
156 }
157 }
158
159 static struct mtd_partition omap3beagle_nand_partitions[] = {
160 /* All the partition sizes are listed in terms of NAND block size */
161 {
162 .name = "X-Loader",
163 .offset = 0,
164 .size = 4 * NAND_BLOCK_SIZE,
165 .mask_flags = MTD_WRITEABLE, /* force read-only */
166 },
167 {
168 .name = "U-Boot",
169 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
170 .size = 15 * NAND_BLOCK_SIZE,
171 .mask_flags = MTD_WRITEABLE, /* force read-only */
172 },
173 {
174 .name = "U-Boot Env",
175 .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
176 .size = 1 * NAND_BLOCK_SIZE,
177 },
178 {
179 .name = "Kernel",
180 .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
181 .size = 32 * NAND_BLOCK_SIZE,
182 },
183 {
184 .name = "File System",
185 .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
186 .size = MTDPART_SIZ_FULL,
187 },
188 };
189
190 /* DSS */
191
beagle_enable_dvi(struct omap_dss_device * dssdev)192 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
193 {
194 if (gpio_is_valid(dssdev->reset_gpio))
195 gpio_set_value(dssdev->reset_gpio, 1);
196
197 return 0;
198 }
199
beagle_disable_dvi(struct omap_dss_device * dssdev)200 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
201 {
202 if (gpio_is_valid(dssdev->reset_gpio))
203 gpio_set_value(dssdev->reset_gpio, 0);
204 }
205
206 static struct panel_dvi_platform_data dvi_panel = {
207 .platform_enable = beagle_enable_dvi,
208 .platform_disable = beagle_disable_dvi,
209 .i2c_bus_num = 3,
210 };
211
212 static struct omap_dss_device beagle_dvi_device = {
213 .type = OMAP_DISPLAY_TYPE_DPI,
214 .name = "dvi",
215 .driver_name = "dvi",
216 .data = &dvi_panel,
217 .phy.dpi.data_lines = 24,
218 .reset_gpio = -EINVAL,
219 };
220
221 static struct omap_dss_device beagle_tv_device = {
222 .name = "tv",
223 .driver_name = "venc",
224 .type = OMAP_DISPLAY_TYPE_VENC,
225 .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
226 };
227
228 static struct omap_dss_device *beagle_dss_devices[] = {
229 &beagle_dvi_device,
230 &beagle_tv_device,
231 };
232
233 static struct omap_dss_board_info beagle_dss_data = {
234 .num_devices = ARRAY_SIZE(beagle_dss_devices),
235 .devices = beagle_dss_devices,
236 .default_device = &beagle_dvi_device,
237 };
238
beagle_display_init(void)239 static void __init beagle_display_init(void)
240 {
241 int r;
242
243 r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
244 "DVI reset");
245 if (r < 0)
246 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
247 }
248
249 #include "sdram-micron-mt46h32m32lf-6.h"
250
251 static struct omap2_hsmmc_info mmc[] = {
252 {
253 .mmc = 1,
254 .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
255 .gpio_wp = -EINVAL,
256 },
257 {} /* Terminator */
258 };
259
260 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
261 REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
262 };
263
264 static struct regulator_consumer_supply beagle_vsim_supply[] = {
265 REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
266 };
267
268 static struct gpio_led gpio_leds[];
269
beagle_twl_gpio_setup(struct device * dev,unsigned gpio,unsigned ngpio)270 static int beagle_twl_gpio_setup(struct device *dev,
271 unsigned gpio, unsigned ngpio)
272 {
273 int r;
274
275 if (beagle_config.mmc1_gpio_wp != -EINVAL)
276 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
277 mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
278 /* gpio + 0 is "mmc0_cd" (input/IRQ) */
279 mmc[0].gpio_cd = gpio + 0;
280 omap2_hsmmc_init(mmc);
281
282 /*
283 * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
284 * high / others active low)
285 * DVI reset GPIO is different between beagle revisions
286 */
287 /* Valid for all -xM revisions */
288 if (cpu_is_omap3630()) {
289 /*
290 * gpio + 1 on Xm controls the TFP410's enable line (active low)
291 * gpio + 2 control varies depending on the board rev as below:
292 * P7/P8 revisions(prototype): Camera EN
293 * A2+ revisions (production): LDO (DVI, serial, led blocks)
294 */
295 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
296 "nDVI_PWR_EN");
297 if (r)
298 pr_err("%s: unable to configure nDVI_PWR_EN\n",
299 __func__);
300 r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
301 "DVI_LDO_EN");
302 if (r)
303 pr_err("%s: unable to configure DVI_LDO_EN\n",
304 __func__);
305 } else {
306 /*
307 * REVISIT: need ehci-omap hooks for external VBUS
308 * power switch and overcurrent detect
309 */
310 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
311 pr_err("%s: unable to configure EHCI_nOC\n", __func__);
312 }
313 beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;
314
315 gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
316 "nEN_USB_PWR");
317
318 /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
319 gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
320
321 return 0;
322 }
323
324 static struct twl4030_gpio_platform_data beagle_gpio_data = {
325 .gpio_base = OMAP_MAX_GPIO_LINES,
326 .irq_base = TWL4030_GPIO_IRQ_BASE,
327 .irq_end = TWL4030_GPIO_IRQ_END,
328 .use_leds = true,
329 .pullups = BIT(1),
330 .pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
331 | BIT(15) | BIT(16) | BIT(17),
332 .setup = beagle_twl_gpio_setup,
333 };
334
335 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
336 static struct regulator_init_data beagle_vmmc1 = {
337 .constraints = {
338 .min_uV = 1850000,
339 .max_uV = 3150000,
340 .valid_modes_mask = REGULATOR_MODE_NORMAL
341 | REGULATOR_MODE_STANDBY,
342 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
343 | REGULATOR_CHANGE_MODE
344 | REGULATOR_CHANGE_STATUS,
345 },
346 .num_consumer_supplies = ARRAY_SIZE(beagle_vmmc1_supply),
347 .consumer_supplies = beagle_vmmc1_supply,
348 };
349
350 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
351 static struct regulator_init_data beagle_vsim = {
352 .constraints = {
353 .min_uV = 1800000,
354 .max_uV = 3000000,
355 .valid_modes_mask = REGULATOR_MODE_NORMAL
356 | REGULATOR_MODE_STANDBY,
357 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
358 | REGULATOR_CHANGE_MODE
359 | REGULATOR_CHANGE_STATUS,
360 },
361 .num_consumer_supplies = ARRAY_SIZE(beagle_vsim_supply),
362 .consumer_supplies = beagle_vsim_supply,
363 };
364
365 static struct twl4030_platform_data beagle_twldata = {
366 /* platform_data for children goes here */
367 .gpio = &beagle_gpio_data,
368 .vmmc1 = &beagle_vmmc1,
369 .vsim = &beagle_vsim,
370 };
371
372 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
373 {
374 I2C_BOARD_INFO("eeprom", 0x50),
375 },
376 };
377
omap3_beagle_i2c_init(void)378 static int __init omap3_beagle_i2c_init(void)
379 {
380 omap3_pmic_get_config(&beagle_twldata,
381 TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
382 TWL_COMMON_PDATA_AUDIO,
383 TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
384
385 beagle_twldata.vpll2->constraints.name = "VDVI";
386
387 omap3_pmic_init("twl4030", &beagle_twldata);
388 /* Bus 3 is attached to the DVI port where devices like the pico DLP
389 * projector don't work reliably with 400kHz */
390 omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
391 return 0;
392 }
393
394 static struct gpio_led gpio_leds[] = {
395 {
396 .name = "beagleboard::usr0",
397 .default_trigger = "heartbeat",
398 .gpio = 150,
399 },
400 {
401 .name = "beagleboard::usr1",
402 .default_trigger = "mmc0",
403 .gpio = 149,
404 },
405 {
406 .name = "beagleboard::pmu_stat",
407 .gpio = -EINVAL, /* gets replaced */
408 .active_low = true,
409 },
410 };
411
412 static struct gpio_led_platform_data gpio_led_info = {
413 .leds = gpio_leds,
414 .num_leds = ARRAY_SIZE(gpio_leds),
415 };
416
417 static struct platform_device leds_gpio = {
418 .name = "leds-gpio",
419 .id = -1,
420 .dev = {
421 .platform_data = &gpio_led_info,
422 },
423 };
424
425 static struct gpio_keys_button gpio_buttons[] = {
426 {
427 .code = BTN_EXTRA,
428 /* Dynamically assigned depending on board */
429 .gpio = -EINVAL,
430 .desc = "user",
431 .wakeup = 1,
432 },
433 };
434
435 static struct gpio_keys_platform_data gpio_key_info = {
436 .buttons = gpio_buttons,
437 .nbuttons = ARRAY_SIZE(gpio_buttons),
438 };
439
440 static struct platform_device keys_gpio = {
441 .name = "gpio-keys",
442 .id = -1,
443 .dev = {
444 .platform_data = &gpio_key_info,
445 },
446 };
447
448 static struct platform_device madc_hwmon = {
449 .name = "twl4030_madc_hwmon",
450 .id = -1,
451 };
452
453 static struct platform_device *omap3_beagle_devices[] __initdata = {
454 &leds_gpio,
455 &keys_gpio,
456 &madc_hwmon,
457 };
458
459 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
460
461 .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
462 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
463 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
464
465 .phy_reset = true,
466 .reset_gpio_port[0] = -EINVAL,
467 .reset_gpio_port[1] = 147,
468 .reset_gpio_port[2] = -EINVAL
469 };
470
471 #ifdef CONFIG_OMAP_MUX
472 static struct omap_board_mux board_mux[] __initdata = {
473 { .reg_offset = OMAP_MUX_TERMINATOR },
474 };
475 #endif
476
beagle_opp_init(void)477 static void __init beagle_opp_init(void)
478 {
479 int r = 0;
480
481 /* Initialize the omap3 opp table */
482 if (omap3_opp_init()) {
483 pr_err("%s: opp default init failed\n", __func__);
484 return;
485 }
486
487 /* Custom OPP enabled for all xM versions */
488 if (cpu_is_omap3630()) {
489 struct device *mpu_dev, *iva_dev;
490
491 mpu_dev = omap_device_get_by_hwmod_name("mpu");
492 iva_dev = omap_device_get_by_hwmod_name("iva");
493
494 if (!mpu_dev || !iva_dev) {
495 pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
496 __func__, mpu_dev, iva_dev);
497 return;
498 }
499 /* Enable MPU 1GHz and lower opps */
500 r = opp_enable(mpu_dev, 800000000);
501 /* TODO: MPU 1GHz needs SR and ABB */
502
503 /* Enable IVA 800MHz and lower opps */
504 r |= opp_enable(iva_dev, 660000000);
505 /* TODO: DSP 800MHz needs SR and ABB */
506 if (r) {
507 pr_err("%s: failed to enable higher opp %d\n",
508 __func__, r);
509 /*
510 * Cleanup - disable the higher freqs - we dont care
511 * about the results
512 */
513 opp_disable(mpu_dev, 800000000);
514 opp_disable(iva_dev, 660000000);
515 }
516 }
517 return;
518 }
519
omap3_beagle_init(void)520 static void __init omap3_beagle_init(void)
521 {
522 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
523 omap3_beagle_init_rev();
524 omap3_beagle_i2c_init();
525
526 gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
527
528 platform_add_devices(omap3_beagle_devices,
529 ARRAY_SIZE(omap3_beagle_devices));
530 omap_display_init(&beagle_dss_data);
531 omap_serial_init();
532 omap_sdrc_init(mt46h32m32lf6_sdrc_params,
533 mt46h32m32lf6_sdrc_params);
534
535 omap_mux_init_gpio(170, OMAP_PIN_INPUT);
536 /* REVISIT leave DVI powered down until it's needed ... */
537 gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
538
539 usb_musb_init(NULL);
540 usbhs_init(&usbhs_bdata);
541 omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
542 ARRAY_SIZE(omap3beagle_nand_partitions));
543
544 /* Ensure msecure is mux'd to be able to set the RTC. */
545 omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
546
547 /* Ensure SDRC pins are mux'd for self-refresh */
548 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
549 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
550
551 beagle_display_init();
552 beagle_opp_init();
553 }
554
555 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
556 /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
557 .atag_offset = 0x100,
558 .reserve = omap_reserve,
559 .map_io = omap3_map_io,
560 .init_early = omap3_init_early,
561 .init_irq = omap3_init_irq,
562 .handle_irq = omap3_intc_handle_irq,
563 .init_machine = omap3_beagle_init,
564 .timer = &omap3_secure_timer,
565 .restart = omap_prcm_restart,
566 MACHINE_END
567