summaryrefslogtreecommitdiff
path: root/board/genesi/mx51_efikamx/efikamx.c
blob: 13582a24e0f1fa5bf9e3953ee5a6dd421d48b7d7 (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
/*
 * Copyright (C) 2009 Freescale Semiconductor, Inc.
 * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
 * Copyright (C) 2009-2012 Genesi USA, Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/iomux-mx51.h>
#include <asm/gpio.h>
#include <asm/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/clock.h>
#include <i2c.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <power/pmic.h>
#include <fsl_pmic.h>
#include <mc13892.h>

DECLARE_GLOBAL_DATA_PTR;

/*
 * Compile-time error checking
 */
#ifndef	CONFIG_MXC_SPI
#error "CONFIG_MXC_SPI not set, this is essential for board's operation!"
#endif

/*
 * Board revisions
 *
 * Note that we get these revisions here for convenience, but we only set
 * up for the production model Smarttop (1.3) and Smartbook (2.0).
 *
 */
#define	EFIKAMX_BOARD_REV_11	0x1
#define	EFIKAMX_BOARD_REV_12	0x2
#define	EFIKAMX_BOARD_REV_13	0x3
#define	EFIKAMX_BOARD_REV_14	0x4

#define	EFIKASB_BOARD_REV_13	0x1
#define	EFIKASB_BOARD_REV_20	0x2

/*
 * Board identification
 */
static u32 get_mx_rev(void)
{
	u32 rev = 0;
	/*
	 * Retrieve board ID:
	 *
	 *  gpio: 16 17 11
	 *  ==============
	 *	r1.1:  1+ 1  1
	 *	r1.2:  1  1  0
	 *	r1.3:  1  0  1
	 *	r1.4:  1  0  0
	 *
	 * + note: r1.1 does not strap this pin properly so it needs to
	 *         be hacked or ignored.
	 */

	/* set to 1 in order to get correct value on board rev 1.1 */
	gpio_direction_output(IMX_GPIO_NR(3, 16), 1);
	gpio_direction_input(IMX_GPIO_NR(3, 11));
	gpio_direction_input(IMX_GPIO_NR(3, 16));
	gpio_direction_input(IMX_GPIO_NR(3, 17));

	rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 16))) << 0;
	rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 17))) << 1;
	rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 11))) << 2;

	return (~rev & 0x7) + 1;
}

static iomux_v3_cfg_t const efikasb_revision_pads[] = {
	MX51_PAD_EIM_CS3__GPIO2_28,
	MX51_PAD_EIM_CS4__GPIO2_29,
};

static inline u32 get_sb_rev(void)
{
	u32 rev = 0;

	imx_iomux_v3_setup_multiple_pads(efikasb_revision_pads,
				ARRAY_SIZE(efikasb_revision_pads));
	gpio_direction_input(IMX_GPIO_NR(2, 28));
	gpio_direction_input(IMX_GPIO_NR(2, 29));

	rev |= (!!gpio_get_value(IMX_GPIO_NR(2, 28))) << 0;
	rev |= (!!gpio_get_value(IMX_GPIO_NR(2, 29))) << 1;

	return rev;
}

inline uint32_t get_efikamx_rev(void)
{
	if (machine_is_efikamx())
		return get_mx_rev();
	else if (machine_is_efikasb())
		return get_sb_rev();
}

u32 get_board_rev(void)
{
	return get_cpu_rev() | (get_efikamx_rev() << 8);
}

/*
 * DRAM initialization
 */
int dram_init(void)
{
	/* dram_init must store complete ramsize in gd->ram_size */
	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
						PHYS_SDRAM_1_SIZE);
	return 0;
}

/*
 * UART configuration
 */
static iomux_v3_cfg_t const efikamx_uart_pads[] = {
	MX51_PAD_UART1_RXD__UART1_RXD,
	MX51_PAD_UART1_TXD__UART1_TXD,
	MX51_PAD_UART1_RTS__UART1_RTS,
	MX51_PAD_UART1_CTS__UART1_CTS,
};

/*
 * SPI configuration
 */
static iomux_v3_cfg_t const efikamx_spi_pads[] = {
	MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
	MX51_PAD_CSPI1_MISO__ECSPI1_MISO,
	MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
	MX51_PAD_CSPI1_SS0__GPIO4_24,
	MX51_PAD_CSPI1_SS1__GPIO4_25,
	MX51_PAD_GPIO1_6__GPIO1_6,
};

#define EFIKAMX_SPI_SS0		IMX_GPIO_NR(4, 24)
#define EFIKAMX_SPI_SS1		IMX_GPIO_NR(4, 25)
#define EFIKAMX_PMIC_IRQ	IMX_GPIO_NR(1, 6)

/*
 * PMIC configuration
 */
#ifdef CONFIG_MXC_SPI
static void power_init(void)
{
	unsigned int val;
	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE;
	struct pmic *p;
	int ret;

	ret = pmic_init(I2C_PMIC);
	if (ret)
		return;

	p = pmic_get("FSL_PMIC");
	if (!p)
		return;

	/* Write needed to Power Gate 2 register */
	pmic_reg_read(p, REG_POWER_MISC, &val);
	val &= ~PWGT2SPIEN;
	pmic_reg_write(p, REG_POWER_MISC, val);

	/* Externally powered */
	pmic_reg_read(p, REG_CHARGE, &val);
	val |= ICHRG0 | ICHRG1 | ICHRG2 | ICHRG3 | CHGAUTOB;
	pmic_reg_write(p, REG_CHARGE, val);

	/* power up the system first */
	pmic_reg_write(p, REG_POWER_MISC, PWUP);

	/* Set core voltage to 1.1V */
	pmic_reg_read(p, REG_SW_0, &val);
	val = (val & ~SWx_VOLT_MASK) | SWx_1_100V;
	pmic_reg_write(p, REG_SW_0, val);

	/* Setup VCC (SW2) to 1.25 */
	pmic_reg_read(p, REG_SW_1, &val);
	val = (val & ~SWx_VOLT_MASK) | SWx_1_250V;
	pmic_reg_write(p, REG_SW_1, val);

	/* Setup 1V2_DIG1 (SW3) to 1.25 */
	pmic_reg_read(p, REG_SW_2, &val);
	val = (val & ~SWx_VOLT_MASK) | SWx_1_250V;
	pmic_reg_write(p, REG_SW_2, val);
	udelay(50);

	/* Raise the core frequency to 800MHz */
	writel(0x0, &mxc_ccm->cacrr);

	/* Set switchers in Auto in NORMAL mode & STANDBY mode */
	/* Setup the switcher mode for SW1 & SW2*/
	pmic_reg_read(p, REG_SW_4, &val);
	val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
		(SWMODE_MASK << SWMODE2_SHIFT)));
	val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
		(SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
	pmic_reg_write(p, REG_SW_4, val);

	/* Setup the switcher mode for SW3 & SW4 */
	pmic_reg_read(p, REG_SW_5, &val);
	val = (val & ~((SWMODE_MASK << SWMODE3_SHIFT) |
		(SWMODE_MASK << SWMODE4_SHIFT)));
	val |= (SWMODE_AUTO_AUTO << SWMODE3_SHIFT) |
		(SWMODE_AUTO_AUTO << SWMODE4_SHIFT);
	pmic_reg_write(p, REG_SW_5, val);

	/* Set VDIG to 1.8V, VGEN3 to 1.8V, VCAM to 2.6V */
	pmic_reg_read(p, REG_SETTING_0, &val);
	val &= ~(VCAM_MASK | VGEN3_MASK | VDIG_MASK);
	val |= VDIG_1_8 | VGEN3_1_8 | VCAM_2_6;
	pmic_reg_write(p, REG_SETTING_0, val);

	/* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */
	pmic_reg_read(p, REG_SETTING_1, &val);
	val &= ~(VVIDEO_MASK | VSD_MASK | VAUDIO_MASK);
	val |= VSD_3_15 | VAUDIO_3_0 | VVIDEO_2_775 | VGEN1_1_2 | VGEN2_3_15;
	pmic_reg_write(p, REG_SETTING_1, val);

	/* Enable VGEN1, VGEN2, VDIG, VPLL */
	pmic_reg_read(p, REG_MODE_0, &val);
	val |= VGEN1EN | VDIGEN | VGEN2EN | VPLLEN;
	pmic_reg_write(p, REG_MODE_0, val);

	/* Configure VGEN3 and VCAM regulators to use external PNP */
	val = VGEN3CONFIG | VCAMCONFIG;
	pmic_reg_write(p, REG_MODE_1, val);
	udelay(200);

	/* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
	val = VGEN3EN | VGEN3CONFIG | VCAMEN | VCAMCONFIG |
		VVIDEOEN | VAUDIOEN | VSDEN;
	pmic_reg_write(p, REG_MODE_1, val);

	pmic_reg_read(p, REG_POWER_CTL2, &val);
	val |= WDIRESET;
	pmic_reg_write(p, REG_POWER_CTL2, val);

	udelay(2500);
}
#else
static inline void power_init(void) { }
#endif

/*
 * MMC configuration
 */
#ifdef CONFIG_FSL_ESDHC

struct fsl_esdhc_cfg esdhc_cfg[2] = {
	{MMC_SDHC1_BASE_ADDR},
	{MMC_SDHC2_BASE_ADDR},
};

static iomux_v3_cfg_t const efikamx_sdhc1_pads[] = {
	MX51_PAD_SD1_CMD__SD1_CMD,
	MX51_PAD_SD1_CLK__SD1_CLK,
	MX51_PAD_SD1_DATA0__SD1_DATA0,
	MX51_PAD_SD1_DATA1__SD1_DATA1,
	MX51_PAD_SD1_DATA2__SD1_DATA2,
	MX51_PAD_SD1_DATA3__SD1_DATA3,
	MX51_PAD_GPIO1_1__SD1_WP,
};

#define EFIKAMX_SDHC1_WP	IMX_GPIO_NR(1, 1)

static iomux_v3_cfg_t const efikamx_sdhc1_cd_pads[] = {
	MX51_PAD_GPIO1_0__SD1_CD,
	NEW_PAD_CTRL(MX51_PAD_EIM_CS2__GPIO2_27, MX51_ESDHC_PAD_CTRL),
};

#define EFIKAMX_SDHC1_CD	IMX_GPIO_NR(1, 0)
#define EFIKASB_SDHC1_CD	IMX_GPIO_NR(2, 27)

static iomux_v3_cfg_t const efikasb_sdhc2_pads[] = {
	MX51_PAD_SD2_CMD__SD2_CMD,
	MX51_PAD_SD2_CLK__SD2_CLK,
	MX51_PAD_SD2_DATA0__SD2_DATA0,
	MX51_PAD_SD2_DATA1__SD2_DATA1,
	MX51_PAD_SD2_DATA2__SD2_DATA2,
	MX51_PAD_SD2_DATA3__SD2_DATA3,
	MX51_PAD_GPIO1_7__SD2_WP,
	MX51_PAD_GPIO1_8__SD2_CD,
};

#define EFIKASB_SDHC2_CD	IMX_GPIO_NR(1, 8)
#define EFIKASB_SDHC2_WP	IMX_GPIO_NR(1, 7)

static inline uint32_t efikamx_mmc_getcd(u32 base)
{
	if (base == MMC_SDHC1_BASE_ADDR)
		if (machine_is_efikamx())
			return EFIKAMX_SDHC1_CD;
		else
			return EFIKASB_SDHC1_CD;
	else
		return EFIKASB_SDHC2_CD;
}

int board_mmc_getcd(struct mmc *mmc)
{
	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
	uint32_t cd = efikamx_mmc_getcd(cfg->esdhc_base);
	int ret = !gpio_get_value(cd);

	return ret;
}

int board_mmc_init(bd_t *bis)
{
	int ret;

	/*
	 * All Efika MX boards use eSDHC1 with a common write-protect GPIO
	 */
	imx_iomux_v3_setup_multiple_pads(efikamx_sdhc1_pads,
					ARRAY_SIZE(efikamx_sdhc1_pads));
	gpio_direction_input(EFIKAMX_SDHC1_WP);

	/*
	 * Smartbook and Smarttop differ on the location of eSDHC1
	 * carrier-detect GPIO
	 */
	if (machine_is_efikamx()) {
		imx_iomux_v3_setup_pad(efikamx_sdhc1_cd_pads[0]);
		gpio_direction_input(EFIKAMX_SDHC1_CD);
	} else if (machine_is_efikasb()) {
		imx_iomux_v3_setup_pad(efikamx_sdhc1_cd_pads[1]);
		gpio_direction_input(EFIKASB_SDHC1_CD);
	}

	esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
	esdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);

	ret = fsl_esdhc_initialize(bis, &esdhc_cfg[0]);

	if (machine_is_efikasb()) {

		imx_iomux_v3_setup_multiple_pads(efikasb_sdhc2_pads,
						ARRAY_SIZE(efikasb_sdhc2_pads));
		gpio_direction_input(EFIKASB_SDHC2_CD);
		gpio_direction_input(EFIKASB_SDHC2_WP);
		if (!ret)
			ret = fsl_esdhc_initialize(bis, &esdhc_cfg[1]);
	}

	return ret;
}
#endif

/*
 * PATA
 */
static iomux_v3_cfg_t const efikamx_pata_pads[] = {
	MX51_PAD_NANDF_WE_B__PATA_DIOW,
	MX51_PAD_NANDF_RE_B__PATA_DIOR,
	MX51_PAD_NANDF_ALE__PATA_BUFFER_EN,
	MX51_PAD_NANDF_CLE__PATA_RESET_B,
	MX51_PAD_NANDF_WP_B__PATA_DMACK,
	MX51_PAD_NANDF_RB0__PATA_DMARQ,
	MX51_PAD_NANDF_RB1__PATA_IORDY,
	MX51_PAD_GPIO_NAND__PATA_INTRQ,
	MX51_PAD_NANDF_CS2__PATA_CS_0,
	MX51_PAD_NANDF_CS3__PATA_CS_1,
	MX51_PAD_NANDF_CS4__PATA_DA_0,
	MX51_PAD_NANDF_CS5__PATA_DA_1,
	MX51_PAD_NANDF_CS6__PATA_DA_2,
	MX51_PAD_NANDF_D15__PATA_DATA15,
	MX51_PAD_NANDF_D14__PATA_DATA14,
	MX51_PAD_NANDF_D13__PATA_DATA13,
	MX51_PAD_NANDF_D12__PATA_DATA12,
	MX51_PAD_NANDF_D11__PATA_DATA11,
	MX51_PAD_NANDF_D10__PATA_DATA10,
	MX51_PAD_NANDF_D9__PATA_DATA9,
	MX51_PAD_NANDF_D8__PATA_DATA8,
	MX51_PAD_NANDF_D7__PATA_DATA7,
	MX51_PAD_NANDF_D6__PATA_DATA6,
	MX51_PAD_NANDF_D5__PATA_DATA5,
	MX51_PAD_NANDF_D4__PATA_DATA4,
	MX51_PAD_NANDF_D3__PATA_DATA3,
	MX51_PAD_NANDF_D2__PATA_DATA2,
	MX51_PAD_NANDF_D1__PATA_DATA1,
	MX51_PAD_NANDF_D0__PATA_DATA0,
};

/*
 * EHCI USB
 */
#ifdef	CONFIG_CMD_USB
extern void setup_iomux_usb(void);
#else
static inline void setup_iomux_usb(void) { }
#endif

/*
 * LED configuration
 *
 * Smarttop LED pad config is done in the DCD
 *
 */
#define EFIKAMX_LED_BLUE	IMX_GPIO_NR(3, 13)
#define EFIKAMX_LED_GREEN	IMX_GPIO_NR(3, 14)
#define EFIKAMX_LED_RED		IMX_GPIO_NR(3, 15)

static iomux_v3_cfg_t const efikasb_led_pads[] = {
	MX51_PAD_GPIO1_3__GPIO1_3,
	MX51_PAD_EIM_CS0__GPIO2_25,
};

#define EFIKASB_CAPSLOCK_LED	IMX_GPIO_NR(2, 25)
#define EFIKASB_MESSAGE_LED	IMX_GPIO_NR(1, 3) /* Note: active low */

/*
 * Board initialization
 */
int board_early_init_f(void)
{
	if (machine_is_efikasb()) {
		imx_iomux_v3_setup_multiple_pads(efikasb_led_pads,
						ARRAY_SIZE(efikasb_led_pads));
		gpio_direction_output(EFIKASB_CAPSLOCK_LED, 0);
		gpio_direction_output(EFIKASB_MESSAGE_LED, 1);
	} else if (machine_is_efikamx()) {
		/*
		 * Set up GPIO directions for LEDs.
		 * IOMUX has been done in the DCD already.
		 * Turn the red LED on for pre-relocation code.
		 */
		gpio_direction_output(EFIKAMX_LED_BLUE, 0);
		gpio_direction_output(EFIKAMX_LED_GREEN, 0);
		gpio_direction_output(EFIKAMX_LED_RED, 1);
	}

	/*
	 * Both these pad configurations for UART and SPI are kind of redundant
	 * since they are the Power-On Defaults for the i.MX51. But, it seems we
	 * should make absolutely sure that they are set up correctly.
	 */
	imx_iomux_v3_setup_multiple_pads(efikamx_uart_pads,
					ARRAY_SIZE(efikamx_uart_pads));
	imx_iomux_v3_setup_multiple_pads(efikamx_spi_pads,
					ARRAY_SIZE(efikamx_spi_pads));

	/* not technically required for U-Boot operation but do it anyway. */
	gpio_direction_input(EFIKAMX_PMIC_IRQ);
	/* Deselect both CS for now, otherwise NOR doesn't probe properly. */
	gpio_direction_output(EFIKAMX_SPI_SS0, 0);
	gpio_direction_output(EFIKAMX_SPI_SS1, 1);

	return 0;
}

int board_init(void)
{
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	return 0;
}

int board_late_init(void)
{
	if (machine_is_efikamx()) {
		/*
		 * Set up Blue LED for "In U-Boot" status.
		 * We're all relocated and ready to U-Boot!
		 */
		gpio_set_value(EFIKAMX_LED_RED, 0);
		gpio_set_value(EFIKAMX_LED_GREEN, 0);
		gpio_set_value(EFIKAMX_LED_BLUE, 1);
	}

	power_init();

	imx_iomux_v3_setup_multiple_pads(efikamx_pata_pads,
					ARRAY_SIZE(efikamx_pata_pads));
	setup_iomux_usb();

	return 0;
}

int checkboard(void)
{
	u32 rev = get_efikamx_rev();

	printf("Board: Genesi Efika MX ");
	if (machine_is_efikamx())
		printf("Smarttop (1.%i)\n", rev & 0xf);
	else if (machine_is_efikasb())
		printf("Smartbook\n");

	return 0;
}