aboutsummaryrefslogtreecommitdiff
path: root/board/davinci/ea20/ea20.c
blob: 66804d75bd045d9a01a01f400cabbdc9abc7be5a (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
/*
 * (C) Copyright 2010
 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
 *
 * Based on da850evm.c, original Copyrights follow:
 *
 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
 *
 * Based on da830evm.c. Original Copyrights follow:
 *
 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <i2c.h>
#include <net.h>
#include <netdev.h>
#include <asm/arch/hardware.h>
#include <asm/ti-common/davinci_nand.h>
#include <asm/arch/emac_defs.h>
#include <asm/io.h>
#include <asm/arch/davinci_misc.h>
#include <asm/gpio.h>
#include "../../../drivers/video/da8xx-fb.h"

DECLARE_GLOBAL_DATA_PTR;

static const struct da8xx_panel lcd_panel = {
	/* Casio COM57H531x */
	.name = "Casio_COM57H531x",
	.width = 640,
	.height = 480,
	.hfp = 12,
	.hbp = 144,
	.hsw = 30,
	.vfp = 10,
	.vbp = 35,
	.vsw = 3,
	.pxl_clk = 25000000,
	.invert_pxl_clk = 0,
};

static const struct display_panel disp_panel = {
	QVGA,
	16,
	16,
	COLOR_ACTIVE,
};

static const struct lcd_ctrl_config lcd_cfg = {
	&disp_panel,
	.ac_bias		= 255,
	.ac_bias_intrpt		= 0,
	.dma_burst_sz		= 16,
	.bpp			= 16,
	.fdd			= 255,
	.tft_alt_mode		= 0,
	.stn_565_mode		= 0,
	.mono_8bit_mode		= 0,
	.invert_line_clock	= 1,
	.invert_frm_clock	= 1,
	.sync_edge		= 0,
	.sync_ctrl		= 1,
	.raster_order		= 0,
};

/* SPI0 pin muxer settings */
static const struct pinmux_config spi1_pins[] = {
	{ pinmux(5), 1, 1 },
	{ pinmux(5), 1, 2 },
	{ pinmux(5), 1, 4 },
	{ pinmux(5), 1, 5 }
};

/* I2C pin muxer settings */
static const struct pinmux_config i2c_pins[] = {
	{ pinmux(4), 2, 2 },
	{ pinmux(4), 2, 3 }
};

/* UART0 pin muxer settings */
static const struct pinmux_config uart_pins[] = {
	{ pinmux(3), 2, 7 },
	{ pinmux(3), 2, 6 },
	{ pinmux(3), 2, 4 },
	{ pinmux(3), 2, 5 }
};

#ifdef CONFIG_DRIVER_TI_EMAC
#define HAS_RMII 1
static const struct pinmux_config emac_pins[] = {
	{ pinmux(14), 8, 2 },
	{ pinmux(14), 8, 3 },
	{ pinmux(14), 8, 4 },
	{ pinmux(14), 8, 5 },
	{ pinmux(14), 8, 6 },
	{ pinmux(14), 8, 7 },
	{ pinmux(15), 8, 1 },
	{ pinmux(4), 8, 0 },
	{ pinmux(4), 8, 1 }
};
#endif

#ifdef CONFIG_NAND_DAVINCI
const struct pinmux_config nand_pins[] = {
	{ pinmux(7), 1, 0},	/* CS2 */
	{ pinmux(7), 0, 1},	/* CS3  in three state*/
	{ pinmux(7), 1, 4 },	/* EMA_WE */
	{ pinmux(7), 1, 5 },	/* EMA_OE */
	{ pinmux(9), 1, 0 },	/* EMA_D[7] */
	{ pinmux(9), 1, 1 },	/* EMA_D[6] */
	{ pinmux(9), 1, 2 },	/* EMA_D[5] */
	{ pinmux(9), 1, 3 },	/* EMA_D[4] */
	{ pinmux(9), 1, 4 },	/* EMA_D[3] */
	{ pinmux(9), 1, 5 },	/* EMA_D[2] */
	{ pinmux(9), 1, 6 },	/* EMA_D[1] */
	{ pinmux(9), 1, 7 },	/* EMA_D[0] */
	{ pinmux(12), 1, 5 },	/* EMA_A[2] */
	{ pinmux(12), 1, 6 },	/* EMA_A[1] */
	{ pinmux(6), 1, 0 }	/* EMA_CLK */
};
#endif

const struct pinmux_config gpio_pins[] = {
	{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
	{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
	{ pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
	{ pinmux(19), 8, 5 }, /* GPIO6[1]  DISP_ON */
	{ pinmux(14), 8, 1 }  /* GPIO6[6]  LCD_B_PWR*/
};

const struct pinmux_config lcd_pins[] = {
	{ pinmux(17), 2, 1 }, /* LCD_D_0 */
	{ pinmux(17), 2, 0 }, /* LCD_D_1 */
	{ pinmux(16), 2, 7 }, /* LCD_D_2 */
	{ pinmux(16), 2, 6 }, /* LCD_D_3 */
	{ pinmux(16), 2, 5 }, /* LCD_D_4 */
	{ pinmux(16), 2, 4 }, /* LCD_D_5 */
	{ pinmux(16), 2, 3 }, /* LCD_D_6 */
	{ pinmux(16), 2, 2 }, /* LCD_D_7 */
	{ pinmux(18), 2, 1 }, /* LCD_D_8 */
	{ pinmux(18), 2, 0 }, /* LCD_D_9 */
	{ pinmux(17), 2, 7 }, /* LCD_D_10 */
	{ pinmux(17), 2, 6 }, /* LCD_D_11 */
	{ pinmux(17), 2, 5 }, /* LCD_D_12 */
	{ pinmux(17), 2, 4 }, /* LCD_D_13 */
	{ pinmux(17), 2, 3 }, /* LCD_D_14 */
	{ pinmux(17), 2, 2 }, /* LCD_D_15 */
	{ pinmux(18), 2, 6 }, /* LCD_PCLK */
	{ pinmux(19), 2, 0 }, /* LCD_HSYNC */
	{ pinmux(19), 2, 1 }, /* LCD_VSYNC */
	{ pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
};

const struct pinmux_config halten_pin[] = {
	{ pinmux(3),  4, 2 } /* GPIO8[6] HALTEN */
};

static const struct pinmux_resource pinmuxes[] = {
#ifdef CONFIG_SPI_FLASH
	PINMUX_ITEM(spi1_pins),
#endif
	PINMUX_ITEM(uart_pins),
	PINMUX_ITEM(i2c_pins),
#ifdef CONFIG_NAND_DAVINCI
	PINMUX_ITEM(nand_pins),
#endif
#ifdef CONFIG_VIDEO
	PINMUX_ITEM(lcd_pins),
#endif
};

static const struct lpsc_resource lpsc[] = {
	{ DAVINCI_LPSC_AEMIF },	/* NAND, NOR */
	{ DAVINCI_LPSC_SPI1 },	/* Serial Flash */
	{ DAVINCI_LPSC_EMAC },	/* image download */
	{ DAVINCI_LPSC_UART0 },	/* console */
	{ DAVINCI_LPSC_GPIO },
	{ DAVINCI_LPSC_LCDC }, /* LCD */
};

int board_early_init_f(void)
{
	/* PinMux for GPIO */
	if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
		return 1;

	/* Set DISP_ON high to enable LCD output*/
	gpio_direction_output(97, 1);

	/* Set the RESETOUTn low */
	gpio_direction_output(111, 0);

	/* Set U0_SW0 low for UART0 as console*/
	gpio_direction_output(106, 0);

	/* Set U0_SW1 low for UART0 as console*/
	gpio_direction_output(108, 0);

	/* Set LCD_B_PWR low to power down LCD Backlight*/
	gpio_direction_output(102, 0);

#ifndef CONFIG_USE_IRQ
	irq_init();
#endif

	/*
	 * NAND CS setup - cycle counts based on da850evm NAND timings in the
	 * Linux kernel @ 25MHz EMIFA
	 */
#ifdef CONFIG_NAND_DAVINCI
	writel((DAVINCI_ABCR_WSETUP(0) |
		DAVINCI_ABCR_WSTROBE(1) |
		DAVINCI_ABCR_WHOLD(0) |
		DAVINCI_ABCR_RSETUP(0) |
		DAVINCI_ABCR_RSTROBE(1) |
		DAVINCI_ABCR_RHOLD(0) |
		DAVINCI_ABCR_TA(0) |
		DAVINCI_ABCR_ASIZE_8BIT),
	       &davinci_emif_regs->ab1cr); /* CS2 */
#endif

	/*
	 * Power on required peripherals
	 * ARM does not have access by default to PSC0 and PSC1
	 * assuming here that the DSP bootloader has set the IOPU
	 * such that PSC access is available to ARM
	 */
	if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
		return 1;

	/* setup the SUSPSRC for ARM to control emulation suspend */
	writel(readl(&davinci_syscfg_regs->suspsrc) &
	       ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
		 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
		 DAVINCI_SYSCFG_SUSPSRC_UART0),
	       &davinci_syscfg_regs->suspsrc);

	/* configure pinmux settings */
	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
		return 1;

#ifdef CONFIG_DRIVER_TI_EMAC
	if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
		return 1;

	davinci_emac_mii_mode_sel(HAS_RMII);
#endif /* CONFIG_DRIVER_TI_EMAC */

	/* enable the console UART */
	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
		DAVINCI_UART_PWREMU_MGMT_UTRST),
	       &davinci_uart0_ctrl_regs->pwremu_mgmt);

	/*
	 * Reconfigure the LCDC priority to the highest to ensure that
	 * the throughput/latency requirements for the LCDC are met.
	 */
	writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
	       &davinci_syscfg_regs->mstpri[2]);


	return 0;
}

/*
 * Do not overwrite the console
 * Use always serial for U-Boot console
 */
int overwrite_console(void)
{
	return 1;
}

int board_init(void)
{
	/* arch number of the board */
	gd->bd->bi_arch_number = MACH_TYPE_EA20;

	/* address of boot parameters */
	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;

	da8xx_video_init(&lcd_panel, &lcd_cfg, 16);

	return 0;
}

#ifdef CONFIG_BOARD_LATE_INIT

int board_late_init(void)
{
	unsigned char buf[2];
	int ret;

	/* PinMux for HALTEN */
	if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
		return 1;

	/* Set HALTEN to high */
	gpio_direction_output(134, 1);

	/* Set fixed contrast settings for LCD via I2C potentiometer */
	buf[0] = 0x00;
	buf[1] = 0xd7;
	ret = i2c_write(0x2e, 6, 1, buf, 2);
	if (ret)
		puts("\nContrast Settings FAILED\n");

	/* Set LCD_B_PWR high to power up LCD Backlight*/
	gpio_set_value(102, 1);
	return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */

#ifdef CONFIG_DRIVER_TI_EMAC

/*
 * Initializes on-board ethernet controllers.
 */
int board_eth_init(bd_t *bis)
{
	if (!davinci_emac_initialize()) {
		printf("Error: Ethernet init failed!\n");
		return -1;
	}

	/*
	 * This board has a RMII PHY. However, the MDC line on the SOM
	 * must not be disabled (there is no MII PHY on the
	 * baseboard) via the GPIO2[6], because this pin
	 * disables at the same time the SPI flash.
	 */

	return 0;
}
#endif /* CONFIG_DRIVER_TI_EMAC */