1 /*
2 * Critical Link MityOMAP-L138 SoM
3 *
4 * Copyright (C) 2010 Critical Link LLC - https://www.criticallink.com
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of
8 * any kind, whether express or implied.
9 */
10
11 #define pr_fmt(fmt) "MityOMAPL138: " fmt
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/console.h>
16 #include <linux/platform_device.h>
17 #include <linux/property.h>
18 #include <linux/mtd/partitions.h>
19 #include <linux/notifier.h>
20 #include <linux/nvmem-consumer.h>
21 #include <linux/nvmem-provider.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/i2c.h>
24 #include <linux/etherdevice.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/flash.h>
27
28 #include <asm/io.h>
29 #include <asm/mach-types.h>
30 #include <asm/mach/arch.h>
31 #include <mach/common.h>
32 #include <mach/da8xx.h>
33 #include <linux/platform_data/mtd-davinci.h>
34 #include <linux/platform_data/mtd-davinci-aemif.h>
35 #include <linux/platform_data/ti-aemif.h>
36 #include <mach/mux.h>
37 #include <linux/platform_data/spi-davinci.h>
38
39 #define MITYOMAPL138_PHY_ID ""
40
41 #define FACTORY_CONFIG_MAGIC 0x012C0138
42 #define FACTORY_CONFIG_VERSION 0x00010001
43
44 /* Data Held in On-Board I2C device */
45 struct factory_config {
46 u32 magic;
47 u32 version;
48 u8 mac[6];
49 u32 fpga_type;
50 u32 spare;
51 u32 serialnumber;
52 char partnum[32];
53 };
54
55 static struct factory_config factory_config;
56
57 #ifdef CONFIG_CPU_FREQ
58 struct part_no_info {
59 const char *part_no; /* part number string of interest */
60 int max_freq; /* khz */
61 };
62
63 static struct part_no_info mityomapl138_pn_info[] = {
64 {
65 .part_no = "L138-C",
66 .max_freq = 300000,
67 },
68 {
69 .part_no = "L138-D",
70 .max_freq = 375000,
71 },
72 {
73 .part_no = "L138-F",
74 .max_freq = 456000,
75 },
76 {
77 .part_no = "1808-C",
78 .max_freq = 300000,
79 },
80 {
81 .part_no = "1808-D",
82 .max_freq = 375000,
83 },
84 {
85 .part_no = "1808-F",
86 .max_freq = 456000,
87 },
88 {
89 .part_no = "1810-D",
90 .max_freq = 375000,
91 },
92 };
93
mityomapl138_cpufreq_init(const char * partnum)94 static void mityomapl138_cpufreq_init(const char *partnum)
95 {
96 int i, ret;
97
98 for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
99 /*
100 * the part number has additional characters beyond what is
101 * stored in the table. This information is not needed for
102 * determining the speed grade, and would require several
103 * more table entries. Only check the first N characters
104 * for a match.
105 */
106 if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
107 strlen(mityomapl138_pn_info[i].part_no))) {
108 da850_max_speed = mityomapl138_pn_info[i].max_freq;
109 break;
110 }
111 }
112
113 ret = da850_register_cpufreq("pll0_sysclk3");
114 if (ret)
115 pr_warn("cpufreq registration failed: %d\n", ret);
116 }
117 #else
mityomapl138_cpufreq_init(const char * partnum)118 static void mityomapl138_cpufreq_init(const char *partnum) { }
119 #endif
120
read_factory_config(struct notifier_block * nb,unsigned long event,void * data)121 static int read_factory_config(struct notifier_block *nb,
122 unsigned long event, void *data)
123 {
124 int ret;
125 const char *partnum = NULL;
126 struct nvmem_device *nvmem = data;
127
128 if (strcmp(nvmem_dev_name(nvmem), "1-00500") != 0)
129 return NOTIFY_DONE;
130
131 if (!IS_BUILTIN(CONFIG_NVMEM)) {
132 pr_warn("Factory Config not available without CONFIG_NVMEM\n");
133 goto bad_config;
134 }
135
136 ret = nvmem_device_read(nvmem, 0, sizeof(factory_config),
137 &factory_config);
138 if (ret != sizeof(struct factory_config)) {
139 pr_warn("Read Factory Config Failed: %d\n", ret);
140 goto bad_config;
141 }
142
143 if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
144 pr_warn("Factory Config Magic Wrong (%X)\n",
145 factory_config.magic);
146 goto bad_config;
147 }
148
149 if (factory_config.version != FACTORY_CONFIG_VERSION) {
150 pr_warn("Factory Config Version Wrong (%X)\n",
151 factory_config.version);
152 goto bad_config;
153 }
154
155 partnum = factory_config.partnum;
156 pr_info("Part Number = %s\n", partnum);
157
158 bad_config:
159 /* default maximum speed is valid for all platforms */
160 mityomapl138_cpufreq_init(partnum);
161
162 return NOTIFY_STOP;
163 }
164
165 static struct notifier_block mityomapl138_nvmem_notifier = {
166 .notifier_call = read_factory_config,
167 };
168
169 /*
170 * We don't define a cell for factory config as it will be accessed from the
171 * board file using the nvmem notifier chain.
172 */
173 static struct nvmem_cell_info mityomapl138_nvmem_cells[] = {
174 {
175 .name = "macaddr",
176 .offset = 0x64,
177 .bytes = ETH_ALEN,
178 }
179 };
180
181 static struct nvmem_cell_table mityomapl138_nvmem_cell_table = {
182 .nvmem_name = "1-00500",
183 .cells = mityomapl138_nvmem_cells,
184 .ncells = ARRAY_SIZE(mityomapl138_nvmem_cells),
185 };
186
187 static struct nvmem_cell_lookup mityomapl138_nvmem_cell_lookup = {
188 .nvmem_name = "1-00500",
189 .cell_name = "macaddr",
190 .dev_id = "davinci_emac.1",
191 .con_id = "mac-address",
192 };
193
194 static const struct property_entry mityomapl138_fd_chip_properties[] = {
195 PROPERTY_ENTRY_U32("pagesize", 8),
196 PROPERTY_ENTRY_BOOL("read-only"),
197 { }
198 };
199
200 static const struct software_node mityomapl138_fd_chip_node = {
201 .properties = mityomapl138_fd_chip_properties,
202 };
203
204 static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
205 .bus_freq = 100, /* kHz */
206 .bus_delay = 0, /* usec */
207 };
208
209 /* TPS65023 voltage regulator support */
210 /* 1.2V Core */
211 static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
212 {
213 .supply = "cvdd",
214 },
215 };
216
217 /* 1.8V */
218 static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
219 {
220 .supply = "usb0_vdda18",
221 },
222 {
223 .supply = "usb1_vdda18",
224 },
225 {
226 .supply = "ddr_dvdd18",
227 },
228 {
229 .supply = "sata_vddr",
230 },
231 };
232
233 /* 1.2V */
234 static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
235 {
236 .supply = "sata_vdd",
237 },
238 {
239 .supply = "usb_cvdd",
240 },
241 {
242 .supply = "pll0_vdda",
243 },
244 {
245 .supply = "pll1_vdda",
246 },
247 };
248
249 /* 1.8V Aux LDO, not used */
250 static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
251 {
252 .supply = "1.8v_aux",
253 },
254 };
255
256 /* FPGA VCC Aux (2.5 or 3.3) LDO */
257 static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
258 {
259 .supply = "vccaux",
260 },
261 };
262
263 static struct regulator_init_data tps65023_regulator_data[] = {
264 /* dcdc1 */
265 {
266 .constraints = {
267 .min_uV = 1150000,
268 .max_uV = 1350000,
269 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
270 REGULATOR_CHANGE_STATUS,
271 .boot_on = 1,
272 },
273 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
274 .consumer_supplies = tps65023_dcdc1_consumers,
275 },
276 /* dcdc2 */
277 {
278 .constraints = {
279 .min_uV = 1800000,
280 .max_uV = 1800000,
281 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
282 .boot_on = 1,
283 },
284 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
285 .consumer_supplies = tps65023_dcdc2_consumers,
286 },
287 /* dcdc3 */
288 {
289 .constraints = {
290 .min_uV = 1200000,
291 .max_uV = 1200000,
292 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
293 .boot_on = 1,
294 },
295 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
296 .consumer_supplies = tps65023_dcdc3_consumers,
297 },
298 /* ldo1 */
299 {
300 .constraints = {
301 .min_uV = 1800000,
302 .max_uV = 1800000,
303 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
304 .boot_on = 1,
305 },
306 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
307 .consumer_supplies = tps65023_ldo1_consumers,
308 },
309 /* ldo2 */
310 {
311 .constraints = {
312 .min_uV = 2500000,
313 .max_uV = 3300000,
314 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
315 REGULATOR_CHANGE_STATUS,
316 .boot_on = 1,
317 },
318 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
319 .consumer_supplies = tps65023_ldo2_consumers,
320 },
321 };
322
323 static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
324 {
325 I2C_BOARD_INFO("tps65023", 0x48),
326 .platform_data = &tps65023_regulator_data[0],
327 },
328 {
329 I2C_BOARD_INFO("24c02", 0x50),
330 .swnode = &mityomapl138_fd_chip_node,
331 },
332 };
333
pmic_tps65023_init(void)334 static int __init pmic_tps65023_init(void)
335 {
336 return i2c_register_board_info(1, mityomap_tps65023_info,
337 ARRAY_SIZE(mityomap_tps65023_info));
338 }
339
340 /*
341 * SPI Devices:
342 * SPI1_CS0: 8M Flash ST-M25P64-VME6G
343 */
344 static struct mtd_partition spi_flash_partitions[] = {
345 [0] = {
346 .name = "ubl",
347 .offset = 0,
348 .size = SZ_64K,
349 .mask_flags = MTD_WRITEABLE,
350 },
351 [1] = {
352 .name = "u-boot",
353 .offset = MTDPART_OFS_APPEND,
354 .size = SZ_512K,
355 .mask_flags = MTD_WRITEABLE,
356 },
357 [2] = {
358 .name = "u-boot-env",
359 .offset = MTDPART_OFS_APPEND,
360 .size = SZ_64K,
361 .mask_flags = MTD_WRITEABLE,
362 },
363 [3] = {
364 .name = "periph-config",
365 .offset = MTDPART_OFS_APPEND,
366 .size = SZ_64K,
367 .mask_flags = MTD_WRITEABLE,
368 },
369 [4] = {
370 .name = "reserved",
371 .offset = MTDPART_OFS_APPEND,
372 .size = SZ_256K + SZ_64K,
373 },
374 [5] = {
375 .name = "kernel",
376 .offset = MTDPART_OFS_APPEND,
377 .size = SZ_2M + SZ_1M,
378 },
379 [6] = {
380 .name = "fpga",
381 .offset = MTDPART_OFS_APPEND,
382 .size = SZ_2M,
383 },
384 [7] = {
385 .name = "spare",
386 .offset = MTDPART_OFS_APPEND,
387 .size = MTDPART_SIZ_FULL,
388 },
389 };
390
391 static struct flash_platform_data mityomapl138_spi_flash_data = {
392 .name = "m25p80",
393 .parts = spi_flash_partitions,
394 .nr_parts = ARRAY_SIZE(spi_flash_partitions),
395 .type = "m24p64",
396 };
397
398 static struct davinci_spi_config spi_eprom_config = {
399 .io_type = SPI_IO_TYPE_DMA,
400 .c2tdelay = 8,
401 .t2cdelay = 8,
402 };
403
404 static struct spi_board_info mityomapl138_spi_flash_info[] = {
405 {
406 .modalias = "m25p80",
407 .platform_data = &mityomapl138_spi_flash_data,
408 .controller_data = &spi_eprom_config,
409 .mode = SPI_MODE_0,
410 .max_speed_hz = 30000000,
411 .bus_num = 1,
412 .chip_select = 0,
413 },
414 };
415
416 /*
417 * MityDSP-L138 includes a 256 MByte large-page NAND flash
418 * (128K blocks).
419 */
420 static struct mtd_partition mityomapl138_nandflash_partition[] = {
421 {
422 .name = "rootfs",
423 .offset = 0,
424 .size = SZ_128M,
425 .mask_flags = 0, /* MTD_WRITEABLE, */
426 },
427 {
428 .name = "homefs",
429 .offset = MTDPART_OFS_APPEND,
430 .size = MTDPART_SIZ_FULL,
431 .mask_flags = 0,
432 },
433 };
434
435 static struct davinci_nand_pdata mityomapl138_nandflash_data = {
436 .core_chipsel = 1,
437 .parts = mityomapl138_nandflash_partition,
438 .nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition),
439 .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST,
440 .bbt_options = NAND_BBT_USE_FLASH,
441 .options = NAND_BUSWIDTH_16,
442 .ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */
443 };
444
445 static struct resource mityomapl138_nandflash_resource[] = {
446 {
447 .start = DA8XX_AEMIF_CS3_BASE,
448 .end = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
449 .flags = IORESOURCE_MEM,
450 },
451 {
452 .start = DA8XX_AEMIF_CTL_BASE,
453 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
454 .flags = IORESOURCE_MEM,
455 },
456 };
457
458 static struct platform_device mityomapl138_aemif_devices[] = {
459 {
460 .name = "davinci_nand",
461 .id = 1,
462 .dev = {
463 .platform_data = &mityomapl138_nandflash_data,
464 },
465 .num_resources = ARRAY_SIZE(mityomapl138_nandflash_resource),
466 .resource = mityomapl138_nandflash_resource,
467 },
468 };
469
470 static struct resource mityomapl138_aemif_resources[] = {
471 {
472 .start = DA8XX_AEMIF_CTL_BASE,
473 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
474 .flags = IORESOURCE_MEM,
475 },
476 };
477
478 static struct aemif_abus_data mityomapl138_aemif_abus_data[] = {
479 {
480 .cs = 1,
481 },
482 };
483
484 static struct aemif_platform_data mityomapl138_aemif_pdata = {
485 .abus_data = mityomapl138_aemif_abus_data,
486 .num_abus_data = ARRAY_SIZE(mityomapl138_aemif_abus_data),
487 .sub_devices = mityomapl138_aemif_devices,
488 .num_sub_devices = ARRAY_SIZE(mityomapl138_aemif_devices),
489 };
490
491 static struct platform_device mityomapl138_aemif_device = {
492 .name = "ti-aemif",
493 .id = -1,
494 .dev = {
495 .platform_data = &mityomapl138_aemif_pdata,
496 },
497 .resource = mityomapl138_aemif_resources,
498 .num_resources = ARRAY_SIZE(mityomapl138_aemif_resources),
499 };
500
mityomapl138_setup_nand(void)501 static void __init mityomapl138_setup_nand(void)
502 {
503 if (platform_device_register(&mityomapl138_aemif_device))
504 pr_warn("%s: Cannot register AEMIF device\n", __func__);
505 }
506
507 static const short mityomap_mii_pins[] = {
508 DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
509 DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
510 DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
511 DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
512 DA850_MDIO_D,
513 -1
514 };
515
516 static const short mityomap_rmii_pins[] = {
517 DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
518 DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
519 DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
520 DA850_MDIO_D,
521 -1
522 };
523
mityomapl138_config_emac(void)524 static void __init mityomapl138_config_emac(void)
525 {
526 void __iomem *cfg_chip3_base;
527 int ret;
528 u32 val;
529 struct davinci_soc_info *soc_info = &davinci_soc_info;
530
531 soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
532
533 cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
534 val = __raw_readl(cfg_chip3_base);
535
536 if (soc_info->emac_pdata->rmii_en) {
537 val |= BIT(8);
538 ret = davinci_cfg_reg_list(mityomap_rmii_pins);
539 pr_info("RMII PHY configured\n");
540 } else {
541 val &= ~BIT(8);
542 ret = davinci_cfg_reg_list(mityomap_mii_pins);
543 pr_info("MII PHY configured\n");
544 }
545
546 if (ret) {
547 pr_warn("mii/rmii mux setup failed: %d\n", ret);
548 return;
549 }
550
551 /* configure the CFGCHIP3 register for RMII or MII */
552 __raw_writel(val, cfg_chip3_base);
553
554 soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
555
556 ret = da8xx_register_emac();
557 if (ret)
558 pr_warn("emac registration failed: %d\n", ret);
559 }
560
mityomapl138_init(void)561 static void __init mityomapl138_init(void)
562 {
563 int ret;
564
565 da850_register_clocks();
566
567 /* for now, no special EDMA channels are reserved */
568 ret = da850_register_edma(NULL);
569 if (ret)
570 pr_warn("edma registration failed: %d\n", ret);
571
572 ret = da8xx_register_watchdog();
573 if (ret)
574 pr_warn("watchdog registration failed: %d\n", ret);
575
576 davinci_serial_init(da8xx_serial_device);
577
578 nvmem_register_notifier(&mityomapl138_nvmem_notifier);
579 nvmem_add_cell_table(&mityomapl138_nvmem_cell_table);
580 nvmem_add_cell_lookups(&mityomapl138_nvmem_cell_lookup, 1);
581
582 ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
583 if (ret)
584 pr_warn("i2c0 registration failed: %d\n", ret);
585
586 ret = pmic_tps65023_init();
587 if (ret)
588 pr_warn("TPS65023 PMIC init failed: %d\n", ret);
589
590 mityomapl138_setup_nand();
591
592 ret = spi_register_board_info(mityomapl138_spi_flash_info,
593 ARRAY_SIZE(mityomapl138_spi_flash_info));
594 if (ret)
595 pr_warn("spi info registration failed: %d\n", ret);
596
597 ret = da8xx_register_spi_bus(1,
598 ARRAY_SIZE(mityomapl138_spi_flash_info));
599 if (ret)
600 pr_warn("spi 1 registration failed: %d\n", ret);
601
602 mityomapl138_config_emac();
603
604 ret = da8xx_register_rtc();
605 if (ret)
606 pr_warn("rtc setup failed: %d\n", ret);
607
608 ret = da8xx_register_cpuidle();
609 if (ret)
610 pr_warn("cpuidle registration failed: %d\n", ret);
611
612 davinci_pm_init();
613 }
614
615 #ifdef CONFIG_SERIAL_8250_CONSOLE
mityomapl138_console_init(void)616 static int __init mityomapl138_console_init(void)
617 {
618 if (!machine_is_mityomapl138())
619 return 0;
620
621 return add_preferred_console("ttyS", 1, "115200");
622 }
623 console_initcall(mityomapl138_console_init);
624 #endif
625
mityomapl138_map_io(void)626 static void __init mityomapl138_map_io(void)
627 {
628 da850_init();
629 }
630
631 MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
632 .atag_offset = 0x100,
633 .map_io = mityomapl138_map_io,
634 .init_irq = da850_init_irq,
635 .init_time = da850_init_time,
636 .init_machine = mityomapl138_init,
637 .init_late = davinci_init_late,
638 .dma_zone_size = SZ_128M,
639 MACHINE_END
640