summaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/board-dm355-leopard.c
blob: 59743bd76793b2ded206afc18925675a7bf431ab (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
/*
 * DM355 leopard board support
 *
 * Based on board-dm355-evm.c
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/rawnand.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
#include <linux/spi/eeprom.h>
#include <linux/platform_data/i2c-davinci.h>
#include <linux/platform_data/mmc-davinci.h>
#include <linux/platform_data/mtd-davinci.h>
#include <linux/platform_data/usb-davinci.h>

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

#include <mach/common.h>
#include <mach/serial.h>

#include "davinci.h"

/* NOTE:  this is geared for the standard config, with a socketed
 * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
 * swap chips, maybe with a different block size, partitioning may
 * need to be changed.
 */
#define NAND_BLOCK_SIZE		SZ_128K

static struct mtd_partition davinci_nand_partitions[] = {
	{
		/* UBL (a few copies) plus U-Boot */
		.name		= "bootloader",
		.offset		= 0,
		.size		= 15 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE, /* force read-only */
	}, {
		/* U-Boot environment */
		.name		= "params",
		.offset		= MTDPART_OFS_APPEND,
		.size		= 1 * NAND_BLOCK_SIZE,
		.mask_flags	= 0,
	}, {
		.name		= "kernel",
		.offset		= MTDPART_OFS_APPEND,
		.size		= SZ_4M,
		.mask_flags	= 0,
	}, {
		.name		= "filesystem1",
		.offset		= MTDPART_OFS_APPEND,
		.size		= SZ_512M,
		.mask_flags	= 0,
	}, {
		.name		= "filesystem2",
		.offset		= MTDPART_OFS_APPEND,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= 0,
	}
	/* two blocks with bad block table (and mirror) at the end */
};

static struct davinci_nand_pdata davinci_nand_data = {
	.mask_chipsel		= BIT(14),
	.parts			= davinci_nand_partitions,
	.nr_parts		= ARRAY_SIZE(davinci_nand_partitions),
	.ecc_mode		= NAND_ECC_HW_SYNDROME,
	.ecc_bits		= 4,
	.bbt_options		= NAND_BBT_USE_FLASH,
};

static struct resource davinci_nand_resources[] = {
	{
		.start		= DM355_ASYNC_EMIF_DATA_CE0_BASE,
		.end		= DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
		.flags		= IORESOURCE_MEM,
	}, {
		.start		= DM355_ASYNC_EMIF_CONTROL_BASE,
		.end		= DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device davinci_nand_device = {
	.name			= "davinci_nand",
	.id			= 0,

	.num_resources		= ARRAY_SIZE(davinci_nand_resources),
	.resource		= davinci_nand_resources,

	.dev			= {
		.platform_data	= &davinci_nand_data,
	},
};

static struct davinci_i2c_platform_data i2c_pdata = {
	.bus_freq	= 400	/* kHz */,
	.bus_delay	= 0	/* usec */,
};

static int leopard_mmc_gpio = -EINVAL;

static void dm355leopard_mmcsd_gpios(unsigned gpio)
{
	gpio_request(gpio + 0, "mmc0_ro");
	gpio_request(gpio + 1, "mmc0_cd");
	gpio_request(gpio + 2, "mmc1_ro");
	gpio_request(gpio + 3, "mmc1_cd");

	/* we "know" these are input-only so we don't
	 * need to call gpio_direction_input()
	 */

	leopard_mmc_gpio = gpio;
}

static struct i2c_board_info dm355leopard_i2c_info[] = {
	{ I2C_BOARD_INFO("dm355leopard_msp", 0x25),
		.platform_data = dm355leopard_mmcsd_gpios,
		/* plus irq */ },
	/* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
	/* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
};

static void __init leopard_init_i2c(void)
{
	davinci_init_i2c(&i2c_pdata);

	gpio_request(5, "dm355leopard_msp");
	gpio_direction_input(5);
	dm355leopard_i2c_info[0].irq = gpio_to_irq(5);

	i2c_register_board_info(1, dm355leopard_i2c_info,
			ARRAY_SIZE(dm355leopard_i2c_info));
}

static struct resource dm355leopard_dm9000_rsrc[] = {
	{
		/* addr */
		.start	= 0x04000000,
		.end	= 0x04000001,
		.flags	= IORESOURCE_MEM,
	}, {
		/* data */
		.start	= 0x04000016,
		.end	= 0x04000017,
		.flags	= IORESOURCE_MEM,
	}, {
		.flags	= IORESOURCE_IRQ
			| IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
	},
};

static struct platform_device dm355leopard_dm9000 = {
	.name		= "dm9000",
	.id		= -1,
	.resource	= dm355leopard_dm9000_rsrc,
	.num_resources	= ARRAY_SIZE(dm355leopard_dm9000_rsrc),
};

static struct platform_device *davinci_leopard_devices[] __initdata = {
	&dm355leopard_dm9000,
	&davinci_nand_device,
};

static void __init dm355_leopard_map_io(void)
{
	dm355_init();
}

static int dm355leopard_mmc_get_cd(int module)
{
	if (!gpio_is_valid(leopard_mmc_gpio))
		return -ENXIO;
	/* low == card present */
	return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
}

static int dm355leopard_mmc_get_ro(int module)
{
	if (!gpio_is_valid(leopard_mmc_gpio))
		return -ENXIO;
	/* high == card's write protect switch active */
	return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
}

static struct davinci_mmc_config dm355leopard_mmc_config = {
	.get_cd		= dm355leopard_mmc_get_cd,
	.get_ro		= dm355leopard_mmc_get_ro,
	.wires		= 4,
	.max_freq       = 50000000,
	.caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
};

/* Don't connect anything to J10 unless you're only using USB host
 * mode *and* have to do so with some kind of gender-bender.  If
 * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
 * the ID pin won't need any help.
 */
#define USB_ID_VALUE	1	/* ID pulled low */

static struct spi_eeprom at25640a = {
	.byte_len	= SZ_64K / 8,
	.name		= "at25640a",
	.page_size	= 32,
	.flags		= EE_ADDR2,
};

static const struct spi_board_info dm355_leopard_spi_info[] __initconst = {
	{
		.modalias	= "at25",
		.platform_data	= &at25640a,
		.max_speed_hz	= 10 * 1000 * 1000,	/* at 3v3 */
		.bus_num	= 0,
		.chip_select	= 0,
		.mode		= SPI_MODE_0,
	},
};

static __init void dm355_leopard_init(void)
{
	struct clk *aemif;
	int ret;

	ret = dm355_gpio_register();
	if (ret)
		pr_warn("%s: GPIO init failed: %d\n", __func__, ret);

	gpio_request(9, "dm9000");
	gpio_direction_input(9);
	dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);

	aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
	if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
		clk_prepare_enable(aemif);

	platform_add_devices(davinci_leopard_devices,
			     ARRAY_SIZE(davinci_leopard_devices));
	leopard_init_i2c();
	davinci_serial_init(dm355_serial_device);

	/* NOTE:  NAND flash timings set by the UBL are slower than
	 * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
	 * but could be 0x0400008c for about 25% faster page reads.
	 */

	gpio_request(2, "usb_id_toggle");
	gpio_direction_output(2, USB_ID_VALUE);
	/* irlml6401 switches over 1A in under 8 msec */
	davinci_setup_usb(1000, 8);

	davinci_setup_mmc(0, &dm355leopard_mmc_config);
	davinci_setup_mmc(1, &dm355leopard_mmc_config);

	dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
			ARRAY_SIZE(dm355_leopard_spi_info));
}

MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
	.atag_offset  = 0x100,
	.map_io	      = dm355_leopard_map_io,
	.init_irq     = davinci_irq_init,
	.init_time	= dm355_init_time,
	.init_machine = dm355_leopard_init,
	.init_late	= davinci_init_late,
	.dma_zone_size	= SZ_128M,
MACHINE_END