GNU Linux-libre 4.19.264-gnu1
[releases.git] / arch / arm / mach-davinci / board-dm355-leopard.c
1 /*
2  * DM355 leopard board support
3  *
4  * Based on board-dm355-evm.c
5  *
6  * This file is licensed under the terms of the GNU General Public
7  * License version 2. This program is licensed "as is" without any
8  * warranty of any kind, whether express or implied.
9  */
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/err.h>
13 #include <linux/platform_device.h>
14 #include <linux/mtd/mtd.h>
15 #include <linux/mtd/partitions.h>
16 #include <linux/mtd/rawnand.h>
17 #include <linux/i2c.h>
18 #include <linux/gpio.h>
19 #include <linux/clk.h>
20 #include <linux/spi/spi.h>
21 #include <linux/spi/eeprom.h>
22 #include <linux/platform_data/i2c-davinci.h>
23 #include <linux/platform_data/mmc-davinci.h>
24 #include <linux/platform_data/mtd-davinci.h>
25 #include <linux/platform_data/usb-davinci.h>
26
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29
30 #include <mach/common.h>
31 #include <mach/serial.h>
32
33 #include "davinci.h"
34
35 /* NOTE:  this is geared for the standard config, with a socketed
36  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
37  * swap chips, maybe with a different block size, partitioning may
38  * need to be changed.
39  */
40 #define NAND_BLOCK_SIZE         SZ_128K
41
42 static struct mtd_partition davinci_nand_partitions[] = {
43         {
44                 /* UBL (a few copies) plus U-Boot */
45                 .name           = "bootloader",
46                 .offset         = 0,
47                 .size           = 15 * NAND_BLOCK_SIZE,
48                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
49         }, {
50                 /* U-Boot environment */
51                 .name           = "params",
52                 .offset         = MTDPART_OFS_APPEND,
53                 .size           = 1 * NAND_BLOCK_SIZE,
54                 .mask_flags     = 0,
55         }, {
56                 .name           = "kernel",
57                 .offset         = MTDPART_OFS_APPEND,
58                 .size           = SZ_4M,
59                 .mask_flags     = 0,
60         }, {
61                 .name           = "filesystem1",
62                 .offset         = MTDPART_OFS_APPEND,
63                 .size           = SZ_512M,
64                 .mask_flags     = 0,
65         }, {
66                 .name           = "filesystem2",
67                 .offset         = MTDPART_OFS_APPEND,
68                 .size           = MTDPART_SIZ_FULL,
69                 .mask_flags     = 0,
70         }
71         /* two blocks with bad block table (and mirror) at the end */
72 };
73
74 static struct davinci_nand_pdata davinci_nand_data = {
75         .core_chipsel           = 0,
76         .mask_chipsel           = BIT(14),
77         .parts                  = davinci_nand_partitions,
78         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
79         .ecc_mode               = NAND_ECC_HW_SYNDROME,
80         .ecc_bits               = 4,
81         .bbt_options            = NAND_BBT_USE_FLASH,
82 };
83
84 static struct resource davinci_nand_resources[] = {
85         {
86                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
87                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
88                 .flags          = IORESOURCE_MEM,
89         }, {
90                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
91                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
92                 .flags          = IORESOURCE_MEM,
93         },
94 };
95
96 static struct platform_device davinci_nand_device = {
97         .name                   = "davinci_nand",
98         .id                     = 0,
99
100         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
101         .resource               = davinci_nand_resources,
102
103         .dev                    = {
104                 .platform_data  = &davinci_nand_data,
105         },
106 };
107
108 static struct davinci_i2c_platform_data i2c_pdata = {
109         .bus_freq       = 400   /* kHz */,
110         .bus_delay      = 0     /* usec */,
111 };
112
113 static int leopard_mmc_gpio = -EINVAL;
114
115 static void dm355leopard_mmcsd_gpios(unsigned gpio)
116 {
117         gpio_request(gpio + 0, "mmc0_ro");
118         gpio_request(gpio + 1, "mmc0_cd");
119         gpio_request(gpio + 2, "mmc1_ro");
120         gpio_request(gpio + 3, "mmc1_cd");
121
122         /* we "know" these are input-only so we don't
123          * need to call gpio_direction_input()
124          */
125
126         leopard_mmc_gpio = gpio;
127 }
128
129 static struct i2c_board_info dm355leopard_i2c_info[] = {
130         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
131                 .platform_data = dm355leopard_mmcsd_gpios,
132                 /* plus irq */ },
133         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
134         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
135 };
136
137 static void __init leopard_init_i2c(void)
138 {
139         davinci_init_i2c(&i2c_pdata);
140
141         gpio_request(5, "dm355leopard_msp");
142         gpio_direction_input(5);
143         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
144
145         i2c_register_board_info(1, dm355leopard_i2c_info,
146                         ARRAY_SIZE(dm355leopard_i2c_info));
147 }
148
149 static struct resource dm355leopard_dm9000_rsrc[] = {
150         {
151                 /* addr */
152                 .start  = 0x04000000,
153                 .end    = 0x04000001,
154                 .flags  = IORESOURCE_MEM,
155         }, {
156                 /* data */
157                 .start  = 0x04000016,
158                 .end    = 0x04000017,
159                 .flags  = IORESOURCE_MEM,
160         }, {
161                 .flags  = IORESOURCE_IRQ
162                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
163         },
164 };
165
166 static struct platform_device dm355leopard_dm9000 = {
167         .name           = "dm9000",
168         .id             = -1,
169         .resource       = dm355leopard_dm9000_rsrc,
170         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
171 };
172
173 static struct platform_device *davinci_leopard_devices[] __initdata = {
174         &dm355leopard_dm9000,
175         &davinci_nand_device,
176 };
177
178 static void __init dm355_leopard_map_io(void)
179 {
180         dm355_init();
181 }
182
183 static int dm355leopard_mmc_get_cd(int module)
184 {
185         if (!gpio_is_valid(leopard_mmc_gpio))
186                 return -ENXIO;
187         /* low == card present */
188         return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
189 }
190
191 static int dm355leopard_mmc_get_ro(int module)
192 {
193         if (!gpio_is_valid(leopard_mmc_gpio))
194                 return -ENXIO;
195         /* high == card's write protect switch active */
196         return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
197 }
198
199 static struct davinci_mmc_config dm355leopard_mmc_config = {
200         .get_cd         = dm355leopard_mmc_get_cd,
201         .get_ro         = dm355leopard_mmc_get_ro,
202         .wires          = 4,
203         .max_freq       = 50000000,
204         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
205 };
206
207 /* Don't connect anything to J10 unless you're only using USB host
208  * mode *and* have to do so with some kind of gender-bender.  If
209  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
210  * the ID pin won't need any help.
211  */
212 #define USB_ID_VALUE    1       /* ID pulled low */
213
214 static struct spi_eeprom at25640a = {
215         .byte_len       = SZ_64K / 8,
216         .name           = "at25640a",
217         .page_size      = 32,
218         .flags          = EE_ADDR2,
219 };
220
221 static const struct spi_board_info dm355_leopard_spi_info[] __initconst = {
222         {
223                 .modalias       = "at25",
224                 .platform_data  = &at25640a,
225                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
226                 .bus_num        = 0,
227                 .chip_select    = 0,
228                 .mode           = SPI_MODE_0,
229         },
230 };
231
232 static __init void dm355_leopard_init(void)
233 {
234         struct clk *aemif;
235         int ret;
236
237         dm355_register_clocks();
238
239         ret = dm355_gpio_register();
240         if (ret)
241                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
242
243         gpio_request(9, "dm9000");
244         gpio_direction_input(9);
245         dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
246
247         aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
248         if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
249                 clk_prepare_enable(aemif);
250
251         platform_add_devices(davinci_leopard_devices,
252                              ARRAY_SIZE(davinci_leopard_devices));
253         leopard_init_i2c();
254         davinci_serial_init(dm355_serial_device);
255
256         /* NOTE:  NAND flash timings set by the UBL are slower than
257          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
258          * but could be 0x0400008c for about 25% faster page reads.
259          */
260
261         gpio_request(2, "usb_id_toggle");
262         gpio_direction_output(2, USB_ID_VALUE);
263         /* irlml6401 switches over 1A in under 8 msec */
264         davinci_setup_usb(1000, 8);
265
266         davinci_setup_mmc(0, &dm355leopard_mmc_config);
267         davinci_setup_mmc(1, &dm355leopard_mmc_config);
268
269         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
270                         ARRAY_SIZE(dm355_leopard_spi_info));
271 }
272
273 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
274         .atag_offset  = 0x100,
275         .map_io       = dm355_leopard_map_io,
276         .init_irq     = davinci_irq_init,
277         .init_time      = dm355_init_time,
278         .init_machine = dm355_leopard_init,
279         .init_late      = davinci_init_late,
280         .dma_zone_size  = SZ_128M,
281 MACHINE_END