diff options
Diffstat (limited to 'arch/arm/mach-davinci/board-dm355-evm.c')
-rw-r--r-- | arch/arm/mach-davinci/board-dm355-evm.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c new file mode 100644 index 000000000000..6af3c6c863ab --- /dev/null +++ b/arch/arm/mach-davinci/board-dm355-evm.c | |||
@@ -0,0 +1,269 @@ | |||
1 | /* | ||
2 | * TI DaVinci EVM board support | ||
3 | * | ||
4 | * Author: Kevin Hilman, Deep Root Systems, LLC | ||
5 | * | ||
6 | * 2007 (c) MontaVista Software, Inc. This file is licensed under | ||
7 | * the terms of the GNU General Public License version 2. This program | ||
8 | * is licensed "as is" without any warranty of any kind, whether express | ||
9 | * or implied. | ||
10 | */ | ||
11 | #include <linux/kernel.h> | ||
12 | #include <linux/module.h> | ||
13 | #include <linux/init.h> | ||
14 | #include <linux/dma-mapping.h> | ||
15 | #include <linux/platform_device.h> | ||
16 | #include <linux/mtd/mtd.h> | ||
17 | #include <linux/mtd/partitions.h> | ||
18 | #include <linux/mtd/nand.h> | ||
19 | #include <linux/i2c.h> | ||
20 | #include <linux/io.h> | ||
21 | #include <linux/gpio.h> | ||
22 | #include <linux/clk.h> | ||
23 | #include <linux/spi/spi.h> | ||
24 | #include <linux/spi/eeprom.h> | ||
25 | |||
26 | #include <asm/setup.h> | ||
27 | #include <asm/mach-types.h> | ||
28 | #include <asm/mach/arch.h> | ||
29 | #include <asm/mach/map.h> | ||
30 | #include <asm/mach/flash.h> | ||
31 | |||
32 | #include <mach/hardware.h> | ||
33 | #include <mach/dm355.h> | ||
34 | #include <mach/psc.h> | ||
35 | #include <mach/common.h> | ||
36 | #include <mach/i2c.h> | ||
37 | #include <mach/serial.h> | ||
38 | #include <mach/nand.h> | ||
39 | |||
40 | #define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000 | ||
41 | #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000 | ||
42 | |||
43 | /* NOTE: this is geared for the standard config, with a socketed | ||
44 | * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you | ||
45 | * swap chips, maybe with a different block size, partitioning may | ||
46 | * need to be changed. | ||
47 | */ | ||
48 | #define NAND_BLOCK_SIZE SZ_128K | ||
49 | |||
50 | static struct mtd_partition davinci_nand_partitions[] = { | ||
51 | { | ||
52 | /* UBL (a few copies) plus U-Boot */ | ||
53 | .name = "bootloader", | ||
54 | .offset = 0, | ||
55 | .size = 15 * NAND_BLOCK_SIZE, | ||
56 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | ||
57 | }, { | ||
58 | /* U-Boot environment */ | ||
59 | .name = "params", | ||
60 | .offset = MTDPART_OFS_APPEND, | ||
61 | .size = 1 * NAND_BLOCK_SIZE, | ||
62 | .mask_flags = 0, | ||
63 | }, { | ||
64 | .name = "kernel", | ||
65 | .offset = MTDPART_OFS_APPEND, | ||
66 | .size = SZ_4M, | ||
67 | .mask_flags = 0, | ||
68 | }, { | ||
69 | .name = "filesystem1", | ||
70 | .offset = MTDPART_OFS_APPEND, | ||
71 | .size = SZ_512M, | ||
72 | .mask_flags = 0, | ||
73 | }, { | ||
74 | .name = "filesystem2", | ||
75 | .offset = MTDPART_OFS_APPEND, | ||
76 | .size = MTDPART_SIZ_FULL, | ||
77 | .mask_flags = 0, | ||
78 | } | ||
79 | /* two blocks with bad block table (and mirror) at the end */ | ||
80 | }; | ||
81 | |||
82 | static struct davinci_nand_pdata davinci_nand_data = { | ||
83 | .mask_chipsel = BIT(14), | ||
84 | .parts = davinci_nand_partitions, | ||
85 | .nr_parts = ARRAY_SIZE(davinci_nand_partitions), | ||
86 | .ecc_mode = NAND_ECC_HW_SYNDROME, | ||
87 | .options = NAND_USE_FLASH_BBT, | ||
88 | }; | ||
89 | |||
90 | static struct resource davinci_nand_resources[] = { | ||
91 | { | ||
92 | .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE, | ||
93 | .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, | ||
94 | .flags = IORESOURCE_MEM, | ||
95 | }, { | ||
96 | .start = DAVINCI_ASYNC_EMIF_CONTROL_BASE, | ||
97 | .end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, | ||
98 | .flags = IORESOURCE_MEM, | ||
99 | }, | ||
100 | }; | ||
101 | |||
102 | static struct platform_device davinci_nand_device = { | ||
103 | .name = "davinci_nand", | ||
104 | .id = 0, | ||
105 | |||
106 | .num_resources = ARRAY_SIZE(davinci_nand_resources), | ||
107 | .resource = davinci_nand_resources, | ||
108 | |||
109 | .dev = { | ||
110 | .platform_data = &davinci_nand_data, | ||
111 | }, | ||
112 | }; | ||
113 | |||
114 | static struct davinci_i2c_platform_data i2c_pdata = { | ||
115 | .bus_freq = 400 /* kHz */, | ||
116 | .bus_delay = 0 /* usec */, | ||
117 | }; | ||
118 | |||
119 | static int dm355evm_mmc_gpios = -EINVAL; | ||
120 | |||
121 | static void dm355evm_mmcsd_gpios(unsigned gpio) | ||
122 | { | ||
123 | gpio_request(gpio + 0, "mmc0_ro"); | ||
124 | gpio_request(gpio + 1, "mmc0_cd"); | ||
125 | gpio_request(gpio + 2, "mmc1_ro"); | ||
126 | gpio_request(gpio + 3, "mmc1_cd"); | ||
127 | |||
128 | /* we "know" these are input-only so we don't | ||
129 | * need to call gpio_direction_input() | ||
130 | */ | ||
131 | |||
132 | dm355evm_mmc_gpios = gpio; | ||
133 | } | ||
134 | |||
135 | static struct i2c_board_info dm355evm_i2c_info[] = { | ||
136 | { I2C_BOARD_INFO("dm355evm_msp", 0x25), | ||
137 | .platform_data = dm355evm_mmcsd_gpios, | ||
138 | /* plus irq */ }, | ||
139 | /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */ | ||
140 | /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */ | ||
141 | }; | ||
142 | |||
143 | static void __init evm_init_i2c(void) | ||
144 | { | ||
145 | davinci_init_i2c(&i2c_pdata); | ||
146 | |||
147 | gpio_request(5, "dm355evm_msp"); | ||
148 | gpio_direction_input(5); | ||
149 | dm355evm_i2c_info[0].irq = gpio_to_irq(5); | ||
150 | |||
151 | i2c_register_board_info(1, dm355evm_i2c_info, | ||
152 | ARRAY_SIZE(dm355evm_i2c_info)); | ||
153 | } | ||
154 | |||
155 | static struct resource dm355evm_dm9000_rsrc[] = { | ||
156 | { | ||
157 | /* addr */ | ||
158 | .start = 0x04014000, | ||
159 | .end = 0x04014001, | ||
160 | .flags = IORESOURCE_MEM, | ||
161 | }, { | ||
162 | /* data */ | ||
163 | .start = 0x04014002, | ||
164 | .end = 0x04014003, | ||
165 | .flags = IORESOURCE_MEM, | ||
166 | }, { | ||
167 | .flags = IORESOURCE_IRQ | ||
168 | | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */, | ||
169 | }, | ||
170 | }; | ||
171 | |||
172 | static struct platform_device dm355evm_dm9000 = { | ||
173 | .name = "dm9000", | ||
174 | .id = -1, | ||
175 | .resource = dm355evm_dm9000_rsrc, | ||
176 | .num_resources = ARRAY_SIZE(dm355evm_dm9000_rsrc), | ||
177 | }; | ||
178 | |||
179 | static struct platform_device *davinci_evm_devices[] __initdata = { | ||
180 | &dm355evm_dm9000, | ||
181 | &davinci_nand_device, | ||
182 | }; | ||
183 | |||
184 | static struct davinci_uart_config uart_config __initdata = { | ||
185 | .enabled_uarts = (1 << 0), | ||
186 | }; | ||
187 | |||
188 | static void __init dm355_evm_map_io(void) | ||
189 | { | ||
190 | davinci_map_common_io(); | ||
191 | dm355_init(); | ||
192 | } | ||
193 | |||
194 | /* Don't connect anything to J10 unless you're only using USB host | ||
195 | * mode *and* have to do so with some kind of gender-bender. If | ||
196 | * you have proper Mini-B or Mini-A cables (or Mini-A adapters) | ||
197 | * the ID pin won't need any help. | ||
198 | */ | ||
199 | #ifdef CONFIG_USB_MUSB_PERIPHERAL | ||
200 | #define USB_ID_VALUE 0 /* ID pulled high; *should* float */ | ||
201 | #else | ||
202 | #define USB_ID_VALUE 1 /* ID pulled low */ | ||
203 | #endif | ||
204 | |||
205 | static struct spi_eeprom at25640a = { | ||
206 | .byte_len = SZ_64K / 8, | ||
207 | .name = "at25640a", | ||
208 | .page_size = 32, | ||
209 | .flags = EE_ADDR2, | ||
210 | }; | ||
211 | |||
212 | static struct spi_board_info dm355_evm_spi_info[] __initconst = { | ||
213 | { | ||
214 | .modalias = "at25", | ||
215 | .platform_data = &at25640a, | ||
216 | .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */ | ||
217 | .bus_num = 0, | ||
218 | .chip_select = 0, | ||
219 | .mode = SPI_MODE_0, | ||
220 | }, | ||
221 | }; | ||
222 | |||
223 | static __init void dm355_evm_init(void) | ||
224 | { | ||
225 | struct clk *aemif; | ||
226 | |||
227 | gpio_request(1, "dm9000"); | ||
228 | gpio_direction_input(1); | ||
229 | dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1); | ||
230 | |||
231 | aemif = clk_get(&dm355evm_dm9000.dev, "aemif"); | ||
232 | if (IS_ERR(aemif)) | ||
233 | WARN("%s: unable to get AEMIF clock\n", __func__); | ||
234 | else | ||
235 | clk_enable(aemif); | ||
236 | |||
237 | platform_add_devices(davinci_evm_devices, | ||
238 | ARRAY_SIZE(davinci_evm_devices)); | ||
239 | evm_init_i2c(); | ||
240 | davinci_serial_init(&uart_config); | ||
241 | |||
242 | /* NOTE: NAND flash timings set by the UBL are slower than | ||
243 | * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204 | ||
244 | * but could be 0x0400008c for about 25% faster page reads. | ||
245 | */ | ||
246 | |||
247 | gpio_request(2, "usb_id_toggle"); | ||
248 | gpio_direction_output(2, USB_ID_VALUE); | ||
249 | /* irlml6401 switches over 1A in under 8 msec */ | ||
250 | setup_usb(500, 8); | ||
251 | |||
252 | dm355_init_spi0(BIT(0), dm355_evm_spi_info, | ||
253 | ARRAY_SIZE(dm355_evm_spi_info)); | ||
254 | } | ||
255 | |||
256 | static __init void dm355_evm_irq_init(void) | ||
257 | { | ||
258 | davinci_irq_init(); | ||
259 | } | ||
260 | |||
261 | MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM") | ||
262 | .phys_io = IO_PHYS, | ||
263 | .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, | ||
264 | .boot_params = (0x80000100), | ||
265 | .map_io = dm355_evm_map_io, | ||
266 | .init_irq = dm355_evm_irq_init, | ||
267 | .timer = &davinci_timer, | ||
268 | .init_machine = dm355_evm_init, | ||
269 | MACHINE_END | ||