1/* 2 * TI DA830/OMAP L137 EVM board 3 * 4 * Author: Mark A. Greer <mgreer@mvista.com> 5 * Derived from: arch/arm/mach-davinci/board-dm644x-evm.c 6 * 7 * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under 8 * the terms of the GNU General Public License version 2. This program 9 * is licensed "as is" without any warranty of any kind, whether express 10 * or implied. 11 */ 12#include <linux/kernel.h> 13#include <linux/init.h> 14#include <linux/console.h> 15#include <linux/interrupt.h> 16#include <linux/gpio.h> 17#include <linux/platform_device.h> 18#include <linux/i2c.h> 19#include <linux/i2c/pcf857x.h> 20#include <linux/i2c/at24.h> 21#include <linux/mtd/mtd.h> 22#include <linux/mtd/partitions.h> 23 24#include <asm/mach-types.h> 25#include <asm/mach/arch.h> 26 27#include <mach/cp_intc.h> 28#include <mach/mux.h> 29#include <mach/nand.h> 30#include <mach/da8xx.h> 31#include <mach/usb.h> 32 33#define DA830_EVM_PHY_MASK 0x0 34#define DA830_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */ 35 36/* 37 * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4]. 38 */ 39#define ON_BD_USB_DRV GPIO_TO_PIN(1, 15) 40#define ON_BD_USB_OVC GPIO_TO_PIN(2, 4) 41 42static const short da830_evm_usb11_pins[] = { 43 DA830_GPIO1_15, DA830_GPIO2_4, 44 -1 45}; 46 47static da8xx_ocic_handler_t da830_evm_usb_ocic_handler; 48 49static int da830_evm_usb_set_power(unsigned port, int on) 50{ 51 gpio_set_value(ON_BD_USB_DRV, on); 52 return 0; 53} 54 55static int da830_evm_usb_get_power(unsigned port) 56{ 57 return gpio_get_value(ON_BD_USB_DRV); 58} 59 60static int da830_evm_usb_get_oci(unsigned port) 61{ 62 return !gpio_get_value(ON_BD_USB_OVC); 63} 64 65static irqreturn_t da830_evm_usb_ocic_irq(int, void *); 66 67static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler) 68{ 69 int irq = gpio_to_irq(ON_BD_USB_OVC); 70 int error = 0; 71 72 if (handler != NULL) { 73 da830_evm_usb_ocic_handler = handler; 74 75 error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED | 76 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, 77 "OHCI over-current indicator", NULL); 78 if (error) 79 printk(KERN_ERR "%s: could not request IRQ to watch " 80 "over-current indicator changes\n", __func__); 81 } else 82 free_irq(irq, NULL); 83 84 return error; 85} 86 87static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = { 88 .set_power = da830_evm_usb_set_power, 89 .get_power = da830_evm_usb_get_power, 90 .get_oci = da830_evm_usb_get_oci, 91 .ocic_notify = da830_evm_usb_ocic_notify, 92 93 /* TPS2065 switch @ 5V */ 94 .potpgt = (3 + 1) / 2, /* 3 ms max */ 95}; 96 97static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id) 98{ 99 da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1); 100 return IRQ_HANDLED; 101} 102 103static __init void da830_evm_usb_init(void) 104{ 105 u32 cfgchip2; 106 int ret; 107 108 /* 109 * Set up USB clock/mode in the CFGCHIP2 register. 110 * FYI: CFGCHIP2 is 0x0000ef00 initially. 111 */ 112 cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG)); 113 114 /* USB2.0 PHY reference clock is 24 MHz */ 115 cfgchip2 &= ~CFGCHIP2_REFFREQ; 116 cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ; 117 118 /* 119 * Select internal reference clock for USB 2.0 PHY 120 * and use it as a clock source for USB 1.1 PHY 121 * (this is the default setting anyway). 122 */ 123 cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX; 124 cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX; 125 126 /* 127 * We have to override VBUS/ID signals when MUSB is configured into the 128 * host-only mode -- ID pin will float if no cable is connected, so the 129 * controller won't be able to drive VBUS thinking that it's a B-device. 130 * Otherwise, we want to use the OTG mode and enable VBUS comparators. 131 */ 132 cfgchip2 &= ~CFGCHIP2_OTGMODE; 133#ifdef CONFIG_USB_MUSB_HOST 134 cfgchip2 |= CFGCHIP2_FORCE_HOST; 135#else 136 cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN; 137#endif 138 139 __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG)); 140 141 /* USB_REFCLKIN is not used. */ 142 ret = davinci_cfg_reg(DA830_USB0_DRVVBUS); 143 if (ret) 144 pr_warning("%s: USB 2.0 PinMux setup failed: %d\n", 145 __func__, ret); 146 else { 147 /* 148 * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A), 149 * with the power on to power good time of 3 ms. 150 */ 151 ret = da8xx_register_usb20(1000, 3); 152 if (ret) 153 pr_warning("%s: USB 2.0 registration failed: %d\n", 154 __func__, ret); 155 } 156 157 ret = davinci_cfg_reg_list(da830_evm_usb11_pins); 158 if (ret) { 159 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n", 160 __func__, ret); 161 return; 162 } 163 164 ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV"); 165 if (ret) { 166 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port " 167 "power control: %d\n", __func__, ret); 168 return; 169 } 170 gpio_direction_output(ON_BD_USB_DRV, 0); 171 172 ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC"); 173 if (ret) { 174 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port " 175 "over-current indicator: %d\n", __func__, ret); 176 return; 177 } 178 gpio_direction_input(ON_BD_USB_OVC); 179 180 ret = da8xx_register_usb11(&da830_evm_usb11_pdata); 181 if (ret) 182 pr_warning("%s: USB 1.1 registration failed: %d\n", 183 __func__, ret); 184} 185 186static struct davinci_uart_config da830_evm_uart_config __initdata = { 187 .enabled_uarts = 0x7, 188}; 189 190static const short da830_evm_mcasp1_pins[] = { 191 DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1, 192 DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5, 193 DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10, 194 DA830_AXR1_11, 195 -1 196}; 197 198static u8 da830_iis_serializer_direction[] = { 199 RX_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, 200 INACTIVE_MODE, TX_MODE, INACTIVE_MODE, INACTIVE_MODE, 201 INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, 202}; 203 204static struct snd_platform_data da830_evm_snd_data = { 205 .tx_dma_offset = 0x2000, 206 .rx_dma_offset = 0x2000, 207 .op_mode = DAVINCI_MCASP_IIS_MODE, 208 .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction), 209 .tdm_slots = 2, 210 .serial_dir = da830_iis_serializer_direction, 211 .asp_chan_q = EVENTQ_0, 212 .version = MCASP_VERSION_2, 213 .txnumevt = 1, 214 .rxnumevt = 1, 215}; 216 217/* 218 * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS. 219 */ 220static const short da830_evm_mmc_sd_pins[] = { 221 DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2, 222 DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5, 223 DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK, 224 DA830_MMCSD_CMD, DA830_GPIO2_1, DA830_GPIO2_2, 225 -1 226}; 227 228#define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1) 229#define DA830_MMCSD_CD_PIN GPIO_TO_PIN(2, 2) 230 231static int da830_evm_mmc_get_ro(int index) 232{ 233 return gpio_get_value(DA830_MMCSD_WP_PIN); 234} 235 236static int da830_evm_mmc_get_cd(int index) 237{ 238 return !gpio_get_value(DA830_MMCSD_CD_PIN); 239} 240 241static struct davinci_mmc_config da830_evm_mmc_config = { 242 .get_ro = da830_evm_mmc_get_ro, 243 .get_cd = da830_evm_mmc_get_cd, 244 .wires = 8, 245 .max_freq = 50000000, 246 .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, 247 .version = MMC_CTLR_VERSION_2, 248}; 249 250static inline void da830_evm_init_mmc(void) 251{ 252 int ret; 253 254 ret = davinci_cfg_reg_list(da830_evm_mmc_sd_pins); 255 if (ret) { 256 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n", 257 ret); 258 return; 259 } 260 261 ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP"); 262 if (ret) { 263 pr_warning("da830_evm_init: can not open GPIO %d\n", 264 DA830_MMCSD_WP_PIN); 265 return; 266 } 267 gpio_direction_input(DA830_MMCSD_WP_PIN); 268 269 ret = gpio_request(DA830_MMCSD_CD_PIN, "MMC CD\n"); 270 if (ret) { 271 pr_warning("da830_evm_init: can not open GPIO %d\n", 272 DA830_MMCSD_CD_PIN); 273 return; 274 } 275 gpio_direction_input(DA830_MMCSD_CD_PIN); 276 277 ret = da8xx_register_mmcsd0(&da830_evm_mmc_config); 278 if (ret) { 279 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n", 280 ret); 281 gpio_free(DA830_MMCSD_WP_PIN); 282 } 283} 284 285/* 286 * UI board NAND/NOR flashes only use 8-bit data bus. 287 */ 288static const short da830_evm_emif25_pins[] = { 289 DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3, 290 DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7, 291 DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3, 292 DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7, 293 DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11, 294 DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE, 295 DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0, 296 -1 297}; 298 299#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE) 300#define HAS_MMC 1 301#else 302#define HAS_MMC 0 303#endif 304 305#ifdef CONFIG_DA830_UI_NAND 306static struct mtd_partition da830_evm_nand_partitions[] = { 307 /* bootloader (U-Boot, etc) in first sector */ 308 [0] = { 309 .name = "bootloader", 310 .offset = 0, 311 .size = SZ_128K, 312 .mask_flags = MTD_WRITEABLE, /* force read-only */ 313 }, 314 /* bootloader params in the next sector */ 315 [1] = { 316 .name = "params", 317 .offset = MTDPART_OFS_APPEND, 318 .size = SZ_128K, 319 .mask_flags = MTD_WRITEABLE, /* force read-only */ 320 }, 321 /* kernel */ 322 [2] = { 323 .name = "kernel", 324 .offset = MTDPART_OFS_APPEND, 325 .size = SZ_2M, 326 .mask_flags = 0, 327 }, 328 /* file system */ 329 [3] = { 330 .name = "filesystem", 331 .offset = MTDPART_OFS_APPEND, 332 .size = MTDPART_SIZ_FULL, 333 .mask_flags = 0, 334 } 335}; 336 337/* flash bbt decriptors */ 338static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' }; 339static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' }; 340 341static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = { 342 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | 343 NAND_BBT_WRITE | NAND_BBT_2BIT | 344 NAND_BBT_VERSION | NAND_BBT_PERCHIP, 345 .offs = 2, 346 .len = 4, 347 .veroffs = 16, 348 .maxblocks = 4, 349 .pattern = da830_evm_nand_bbt_pattern 350}; 351 352static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = { 353 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | 354 NAND_BBT_WRITE | NAND_BBT_2BIT | 355 NAND_BBT_VERSION | NAND_BBT_PERCHIP, 356 .offs = 2, 357 .len = 4, 358 .veroffs = 16, 359 .maxblocks = 4, 360 .pattern = da830_evm_nand_mirror_pattern 361}; 362 363static struct davinci_nand_pdata da830_evm_nand_pdata = { 364 .parts = da830_evm_nand_partitions, 365 .nr_parts = ARRAY_SIZE(da830_evm_nand_partitions), 366 .ecc_mode = NAND_ECC_HW, 367 .ecc_bits = 4, 368 .options = NAND_USE_FLASH_BBT, 369 .bbt_td = &da830_evm_nand_bbt_main_descr, 370 .bbt_md = &da830_evm_nand_bbt_mirror_descr, 371}; 372 373static struct resource da830_evm_nand_resources[] = { 374 [0] = { /* First memory resource is NAND I/O window */ 375 .start = DA8XX_AEMIF_CS3_BASE, 376 .end = DA8XX_AEMIF_CS3_BASE + PAGE_SIZE - 1, 377 .flags = IORESOURCE_MEM, 378 }, 379 [1] = { /* Second memory resource is AEMIF control registers */ 380 .start = DA8XX_AEMIF_CTL_BASE, 381 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1, 382 .flags = IORESOURCE_MEM, 383 }, 384}; 385 386static struct platform_device da830_evm_nand_device = { 387 .name = "davinci_nand", 388 .id = 1, 389 .dev = { 390 .platform_data = &da830_evm_nand_pdata, 391 }, 392 .num_resources = ARRAY_SIZE(da830_evm_nand_resources), 393 .resource = da830_evm_nand_resources, 394}; 395 396static inline void da830_evm_init_nand(int mux_mode) 397{ 398 int ret; 399 400 if (HAS_MMC) { 401 pr_warning("WARNING: both MMC/SD and NAND are " 402 "enabled, but they share AEMIF pins.\n" 403 "\tDisable MMC/SD for NAND support.\n"); 404 return; 405 } 406 407 ret = davinci_cfg_reg_list(da830_evm_emif25_pins); 408 if (ret) 409 pr_warning("da830_evm_init: emif25 mux setup failed: %d\n", 410 ret); 411 412 ret = platform_device_register(&da830_evm_nand_device); 413 if (ret) 414 pr_warning("da830_evm_init: NAND device not registered.\n"); 415 416 gpio_direction_output(mux_mode, 1); 417} 418#else 419static inline void da830_evm_init_nand(int mux_mode) { } 420#endif 421 422#ifdef CONFIG_DA830_UI_LCD 423static inline void da830_evm_init_lcdc(int mux_mode) 424{ 425 int ret; 426 427 ret = davinci_cfg_reg_list(da830_lcdcntl_pins); 428 if (ret) 429 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n", 430 ret); 431 432 ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata); 433 if (ret) 434 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret); 435 436 gpio_direction_output(mux_mode, 0); 437} 438#else 439static inline void da830_evm_init_lcdc(int mux_mode) { } 440#endif 441 442static struct at24_platform_data da830_evm_i2c_eeprom_info = { 443 .byte_len = SZ_256K / 8, 444 .page_size = 64, 445 .flags = AT24_FLAG_ADDR16, 446 .setup = davinci_get_mac_addr, 447 .context = (void *)0x7f00, 448}; 449 450static int __init da830_evm_ui_expander_setup(struct i2c_client *client, 451 int gpio, unsigned ngpio, void *context) 452{ 453 gpio_request(gpio + 6, "UI MUX_MODE"); 454 455 /* Drive mux mode low to match the default without UI card */ 456 gpio_direction_output(gpio + 6, 0); 457 458 da830_evm_init_lcdc(gpio + 6); 459 460 da830_evm_init_nand(gpio + 6); 461 462 return 0; 463} 464 465static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio, 466 unsigned ngpio, void *context) 467{ 468 gpio_free(gpio + 6); 469 return 0; 470} 471 472static struct pcf857x_platform_data __initdata da830_evm_ui_expander_info = { 473 .gpio_base = DAVINCI_N_GPIO, 474 .setup = da830_evm_ui_expander_setup, 475 .teardown = da830_evm_ui_expander_teardown, 476}; 477 478static struct i2c_board_info __initdata da830_evm_i2c_devices[] = { 479 { 480 I2C_BOARD_INFO("24c256", 0x50), 481 .platform_data = &da830_evm_i2c_eeprom_info, 482 }, 483 { 484 I2C_BOARD_INFO("tlv320aic3x", 0x18), 485 }, 486 { 487 I2C_BOARD_INFO("pcf8574", 0x3f), 488 .platform_data = &da830_evm_ui_expander_info, 489 }, 490}; 491 492static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = { 493 .bus_freq = 100, /* kHz */ 494 .bus_delay = 0, /* usec */ 495}; 496 497/* 498 * The following EDMA channels/slots are not being used by drivers (for 499 * example: Timer, GPIO, UART events etc) on da830/omap-l137 EVM, hence 500 * they are being reserved for codecs on the DSP side. 501 */ 502static const s16 da830_dma_rsv_chans[][2] = { 503 /* (offset, number) */ 504 { 8, 2}, 505 {12, 2}, 506 {24, 4}, 507 {30, 2}, 508 {-1, -1} 509}; 510 511static const s16 da830_dma_rsv_slots[][2] = { 512 /* (offset, number) */ 513 { 8, 2}, 514 {12, 2}, 515 {24, 4}, 516 {30, 26}, 517 {-1, -1} 518}; 519 520static struct edma_rsv_info da830_edma_rsv[] = { 521 { 522 .rsv_chans = da830_dma_rsv_chans, 523 .rsv_slots = da830_dma_rsv_slots, 524 }, 525}; 526 527static __init void da830_evm_init(void) 528{ 529 struct davinci_soc_info *soc_info = &davinci_soc_info; 530 int ret; 531 532 ret = da830_register_edma(da830_edma_rsv); 533 if (ret) 534 pr_warning("da830_evm_init: edma registration failed: %d\n", 535 ret); 536 537 ret = davinci_cfg_reg_list(da830_i2c0_pins); 538 if (ret) 539 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n", 540 ret); 541 542 ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata); 543 if (ret) 544 pr_warning("da830_evm_init: i2c0 registration failed: %d\n", 545 ret); 546 547 da830_evm_usb_init(); 548 549 soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK; 550 soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY; 551 soc_info->emac_pdata->rmii_en = 1; 552 553 ret = davinci_cfg_reg_list(da830_cpgmac_pins); 554 if (ret) 555 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n", 556 ret); 557 558 ret = da8xx_register_emac(); 559 if (ret) 560 pr_warning("da830_evm_init: emac registration failed: %d\n", 561 ret); 562 563 ret = da8xx_register_watchdog(); 564 if (ret) 565 pr_warning("da830_evm_init: watchdog registration failed: %d\n", 566 ret); 567 568 davinci_serial_init(&da830_evm_uart_config); 569 i2c_register_board_info(1, da830_evm_i2c_devices, 570 ARRAY_SIZE(da830_evm_i2c_devices)); 571 572 ret = davinci_cfg_reg_list(da830_evm_mcasp1_pins); 573 if (ret) 574 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n", 575 ret); 576 577 da8xx_register_mcasp(1, &da830_evm_snd_data); 578 579 da830_evm_init_mmc(); 580 581 ret = da8xx_register_rtc(); 582 if (ret) 583 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret); 584} 585 586#ifdef CONFIG_SERIAL_8250_CONSOLE 587static int __init da830_evm_console_init(void) 588{ 589 return add_preferred_console("ttyS", 2, "115200"); 590} 591console_initcall(da830_evm_console_init); 592#endif 593 594static void __init da830_evm_map_io(void) 595{ 596 da830_init(); 597} 598 599MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM") 600 .phys_io = IO_PHYS, 601 .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, 602 .boot_params = (DA8XX_DDR_BASE + 0x100), 603 .map_io = da830_evm_map_io, 604 .init_irq = cp_intc_init, 605 .timer = &davinci_timer, 606 .init_machine = da830_evm_init, 607MACHINE_END 608