1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Alchemy Db1550/Pb1550 board support 4 * 5 * (c) 2011 Manuel Lauss <manuel.lauss@googlemail.com> 6 */ 7 8 #include <linux/clk.h> 9 #include <linux/dma-mapping.h> 10 #include <linux/gpio.h> 11 #include <linux/i2c.h> 12 #include <linux/init.h> 13 #include <linux/io.h> 14 #include <linux/interrupt.h> 15 #include <linux/mtd/mtd.h> 16 #include <linux/mtd/platnand.h> 17 #include <linux/platform_device.h> 18 #include <linux/pm.h> 19 #include <linux/spi/spi.h> 20 #include <linux/spi/flash.h> 21 #include <asm/bootinfo.h> 22 #include <asm/mach-au1x00/au1000.h> 23 #include <asm/mach-au1x00/gpio-au1000.h> 24 #include <asm/mach-au1x00/au1xxx_eth.h> 25 #include <asm/mach-au1x00/au1xxx_dbdma.h> 26 #include <asm/mach-au1x00/au1xxx_psc.h> 27 #include <asm/mach-au1x00/au1550_spi.h> 28 #include <asm/mach-au1x00/au1550nd.h> 29 #include <asm/mach-db1x00/bcsr.h> 30 #include <prom.h> 31 #include "platform.h" 32 33 static void __init db1550_hw_setup(void) 34 { 35 void __iomem *base; 36 unsigned long v; 37 38 /* complete pin setup: assign GPIO16 to PSC0_SYNC1 (SPI cs# line) 39 * as well as PSC1_SYNC for AC97 on PB1550. 40 */ 41 v = alchemy_rdsys(AU1000_SYS_PINFUNC); 42 alchemy_wrsys(v | 1 | SYS_PF_PSC1_S1, AU1000_SYS_PINFUNC); 43 44 /* reset the AC97 codec now, the reset time in the psc-ac97 driver 45 * is apparently too short although it's ridiculous as it is. 46 */ 47 base = (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR); 48 __raw_writel(PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE, 49 base + PSC_SEL_OFFSET); 50 __raw_writel(PSC_CTRL_DISABLE, base + PSC_CTRL_OFFSET); 51 wmb(); 52 __raw_writel(PSC_AC97RST_RST, base + PSC_AC97RST_OFFSET); 53 wmb(); 54 } 55 56 int __init db1550_board_setup(void) 57 { 58 unsigned short whoami; 59 60 bcsr_init(DB1550_BCSR_PHYS_ADDR, 61 DB1550_BCSR_PHYS_ADDR + DB1550_BCSR_HEXLED_OFS); 62 63 whoami = bcsr_read(BCSR_WHOAMI); /* PB1550 hexled offset differs */ 64 switch (BCSR_WHOAMI_BOARD(whoami)) { 65 case BCSR_WHOAMI_PB1550_SDR: 66 case BCSR_WHOAMI_PB1550_DDR: 67 bcsr_init(PB1550_BCSR_PHYS_ADDR, 68 PB1550_BCSR_PHYS_ADDR + PB1550_BCSR_HEXLED_OFS); 69 case BCSR_WHOAMI_DB1550: 70 break; 71 default: 72 return -ENODEV; 73 } 74 75 pr_info("Alchemy/AMD %s Board, CPLD Rev %d Board-ID %d " \ 76 "Daughtercard ID %d\n", get_system_type(), 77 (whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf); 78 79 db1550_hw_setup(); 80 return 0; 81 } 82 83 /*****************************************************************************/ 84 85 static struct mtd_partition db1550_spiflash_parts[] = { 86 { 87 .name = "spi_flash", 88 .offset = 0, 89 .size = MTDPART_SIZ_FULL, 90 }, 91 }; 92 93 static struct flash_platform_data db1550_spiflash_data = { 94 .name = "s25fl010", 95 .parts = db1550_spiflash_parts, 96 .nr_parts = ARRAY_SIZE(db1550_spiflash_parts), 97 .type = "m25p10", 98 }; 99 100 static struct spi_board_info db1550_spi_devs[] __initdata = { 101 { 102 /* TI TMP121AIDBVR temp sensor */ 103 .modalias = "tmp121", 104 .max_speed_hz = 2400000, 105 .bus_num = 0, 106 .chip_select = 0, 107 .mode = SPI_MODE_0, 108 }, 109 { 110 /* Spansion S25FL001D0FMA SPI flash */ 111 .modalias = "m25p80", 112 .max_speed_hz = 2400000, 113 .bus_num = 0, 114 .chip_select = 1, 115 .mode = SPI_MODE_0, 116 .platform_data = &db1550_spiflash_data, 117 }, 118 }; 119 120 static struct i2c_board_info db1550_i2c_devs[] __initdata = { 121 { I2C_BOARD_INFO("24c04", 0x52),}, /* AT24C04-10 I2C eeprom */ 122 { I2C_BOARD_INFO("ne1619", 0x2d),}, /* adm1025-compat hwmon */ 123 { I2C_BOARD_INFO("wm8731", 0x1b),}, /* I2S audio codec WM8731 */ 124 }; 125 126 /**********************************************************************/ 127 128 static void au1550_nand_cmd_ctrl(struct nand_chip *this, int cmd, 129 unsigned int ctrl) 130 { 131 unsigned long ioaddr = (unsigned long)this->legacy.IO_ADDR_W; 132 133 ioaddr &= 0xffffff00; 134 135 if (ctrl & NAND_CLE) { 136 ioaddr += MEM_STNAND_CMD; 137 } else if (ctrl & NAND_ALE) { 138 ioaddr += MEM_STNAND_ADDR; 139 } else { 140 /* assume we want to r/w real data by default */ 141 ioaddr += MEM_STNAND_DATA; 142 } 143 this->legacy.IO_ADDR_R = this->legacy.IO_ADDR_W = (void __iomem *)ioaddr; 144 if (cmd != NAND_CMD_NONE) { 145 __raw_writeb(cmd, this->legacy.IO_ADDR_W); 146 wmb(); 147 } 148 } 149 150 static int au1550_nand_device_ready(struct nand_chip *this) 151 { 152 return alchemy_rdsmem(AU1000_MEM_STSTAT) & 1; 153 } 154 155 static struct mtd_partition db1550_nand_parts[] = { 156 { 157 .name = "NAND FS 0", 158 .offset = 0, 159 .size = 8 * 1024 * 1024, 160 }, 161 { 162 .name = "NAND FS 1", 163 .offset = MTDPART_OFS_APPEND, 164 .size = MTDPART_SIZ_FULL 165 }, 166 }; 167 168 struct platform_nand_data db1550_nand_platdata = { 169 .chip = { 170 .nr_chips = 1, 171 .chip_offset = 0, 172 .nr_partitions = ARRAY_SIZE(db1550_nand_parts), 173 .partitions = db1550_nand_parts, 174 .chip_delay = 20, 175 }, 176 .ctrl = { 177 .dev_ready = au1550_nand_device_ready, 178 .cmd_ctrl = au1550_nand_cmd_ctrl, 179 }, 180 }; 181 182 static struct resource db1550_nand_res[] = { 183 [0] = { 184 .start = 0x20000000, 185 .end = 0x200000ff, 186 .flags = IORESOURCE_MEM, 187 }, 188 }; 189 190 static struct platform_device db1550_nand_dev = { 191 .name = "gen_nand", 192 .num_resources = ARRAY_SIZE(db1550_nand_res), 193 .resource = db1550_nand_res, 194 .id = -1, 195 .dev = { 196 .platform_data = &db1550_nand_platdata, 197 } 198 }; 199 200 static struct au1550nd_platdata pb1550_nand_pd = { 201 .parts = db1550_nand_parts, 202 .num_parts = ARRAY_SIZE(db1550_nand_parts), 203 .devwidth = 0, /* x8 NAND default, needs fixing up */ 204 }; 205 206 static struct platform_device pb1550_nand_dev = { 207 .name = "au1550-nand", 208 .id = -1, 209 .resource = db1550_nand_res, 210 .num_resources = ARRAY_SIZE(db1550_nand_res), 211 .dev = { 212 .platform_data = &pb1550_nand_pd, 213 }, 214 }; 215 216 static void __init pb1550_nand_setup(void) 217 { 218 int boot_swapboot = (alchemy_rdsmem(AU1000_MEM_STSTAT) & (0x7 << 1)) | 219 ((bcsr_read(BCSR_STATUS) >> 6) & 0x1); 220 221 gpio_direction_input(206); /* de-assert NAND CS# */ 222 switch (boot_swapboot) { 223 case 0: case 2: case 8: case 0xC: case 0xD: 224 /* x16 NAND Flash */ 225 pb1550_nand_pd.devwidth = 1; 226 /* fallthrough */ 227 case 1: case 3: case 9: case 0xE: case 0xF: 228 /* x8 NAND, already set up */ 229 platform_device_register(&pb1550_nand_dev); 230 } 231 } 232 233 /**********************************************************************/ 234 235 static struct resource au1550_psc0_res[] = { 236 [0] = { 237 .start = AU1550_PSC0_PHYS_ADDR, 238 .end = AU1550_PSC0_PHYS_ADDR + 0xfff, 239 .flags = IORESOURCE_MEM, 240 }, 241 [1] = { 242 .start = AU1550_PSC0_INT, 243 .end = AU1550_PSC0_INT, 244 .flags = IORESOURCE_IRQ, 245 }, 246 [2] = { 247 .start = AU1550_DSCR_CMD0_PSC0_TX, 248 .end = AU1550_DSCR_CMD0_PSC0_TX, 249 .flags = IORESOURCE_DMA, 250 }, 251 [3] = { 252 .start = AU1550_DSCR_CMD0_PSC0_RX, 253 .end = AU1550_DSCR_CMD0_PSC0_RX, 254 .flags = IORESOURCE_DMA, 255 }, 256 }; 257 258 static void db1550_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol) 259 { 260 if (cs) 261 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SPISEL); 262 else 263 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SPISEL, 0); 264 } 265 266 static struct au1550_spi_info db1550_spi_platdata = { 267 .mainclk_hz = 48000000, /* PSC0 clock: max. 2.4MHz SPI clk */ 268 .num_chipselect = 2, 269 .activate_cs = db1550_spi_cs_en, 270 }; 271 272 static u64 spi_dmamask = DMA_BIT_MASK(32); 273 274 static struct platform_device db1550_spi_dev = { 275 .dev = { 276 .dma_mask = &spi_dmamask, 277 .coherent_dma_mask = DMA_BIT_MASK(32), 278 .platform_data = &db1550_spi_platdata, 279 }, 280 .name = "au1550-spi", 281 .id = 0, /* bus number */ 282 .num_resources = ARRAY_SIZE(au1550_psc0_res), 283 .resource = au1550_psc0_res, 284 }; 285 286 /**********************************************************************/ 287 288 static struct resource au1550_psc1_res[] = { 289 [0] = { 290 .start = AU1550_PSC1_PHYS_ADDR, 291 .end = AU1550_PSC1_PHYS_ADDR + 0xfff, 292 .flags = IORESOURCE_MEM, 293 }, 294 [1] = { 295 .start = AU1550_PSC1_INT, 296 .end = AU1550_PSC1_INT, 297 .flags = IORESOURCE_IRQ, 298 }, 299 [2] = { 300 .start = AU1550_DSCR_CMD0_PSC1_TX, 301 .end = AU1550_DSCR_CMD0_PSC1_TX, 302 .flags = IORESOURCE_DMA, 303 }, 304 [3] = { 305 .start = AU1550_DSCR_CMD0_PSC1_RX, 306 .end = AU1550_DSCR_CMD0_PSC1_RX, 307 .flags = IORESOURCE_DMA, 308 }, 309 }; 310 311 static struct platform_device db1550_ac97_dev = { 312 .name = "au1xpsc_ac97", 313 .id = 1, /* PSC ID */ 314 .num_resources = ARRAY_SIZE(au1550_psc1_res), 315 .resource = au1550_psc1_res, 316 }; 317 318 319 static struct resource au1550_psc2_res[] = { 320 [0] = { 321 .start = AU1550_PSC2_PHYS_ADDR, 322 .end = AU1550_PSC2_PHYS_ADDR + 0xfff, 323 .flags = IORESOURCE_MEM, 324 }, 325 [1] = { 326 .start = AU1550_PSC2_INT, 327 .end = AU1550_PSC2_INT, 328 .flags = IORESOURCE_IRQ, 329 }, 330 [2] = { 331 .start = AU1550_DSCR_CMD0_PSC2_TX, 332 .end = AU1550_DSCR_CMD0_PSC2_TX, 333 .flags = IORESOURCE_DMA, 334 }, 335 [3] = { 336 .start = AU1550_DSCR_CMD0_PSC2_RX, 337 .end = AU1550_DSCR_CMD0_PSC2_RX, 338 .flags = IORESOURCE_DMA, 339 }, 340 }; 341 342 static struct platform_device db1550_i2c_dev = { 343 .name = "au1xpsc_smbus", 344 .id = 0, /* bus number */ 345 .num_resources = ARRAY_SIZE(au1550_psc2_res), 346 .resource = au1550_psc2_res, 347 }; 348 349 /**********************************************************************/ 350 351 static struct resource au1550_psc3_res[] = { 352 [0] = { 353 .start = AU1550_PSC3_PHYS_ADDR, 354 .end = AU1550_PSC3_PHYS_ADDR + 0xfff, 355 .flags = IORESOURCE_MEM, 356 }, 357 [1] = { 358 .start = AU1550_PSC3_INT, 359 .end = AU1550_PSC3_INT, 360 .flags = IORESOURCE_IRQ, 361 }, 362 [2] = { 363 .start = AU1550_DSCR_CMD0_PSC3_TX, 364 .end = AU1550_DSCR_CMD0_PSC3_TX, 365 .flags = IORESOURCE_DMA, 366 }, 367 [3] = { 368 .start = AU1550_DSCR_CMD0_PSC3_RX, 369 .end = AU1550_DSCR_CMD0_PSC3_RX, 370 .flags = IORESOURCE_DMA, 371 }, 372 }; 373 374 static struct platform_device db1550_i2s_dev = { 375 .name = "au1xpsc_i2s", 376 .id = 3, /* PSC ID */ 377 .num_resources = ARRAY_SIZE(au1550_psc3_res), 378 .resource = au1550_psc3_res, 379 }; 380 381 /**********************************************************************/ 382 383 static struct platform_device db1550_stac_dev = { 384 .name = "ac97-codec", 385 .id = 1, /* on PSC1 */ 386 }; 387 388 static struct platform_device db1550_ac97dma_dev = { 389 .name = "au1xpsc-pcm", 390 .id = 1, /* on PSC3 */ 391 }; 392 393 static struct platform_device db1550_i2sdma_dev = { 394 .name = "au1xpsc-pcm", 395 .id = 3, /* on PSC3 */ 396 }; 397 398 static struct platform_device db1550_sndac97_dev = { 399 .name = "db1550-ac97", 400 }; 401 402 static struct platform_device db1550_sndi2s_dev = { 403 .name = "db1550-i2s", 404 }; 405 406 /**********************************************************************/ 407 408 static int db1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) 409 { 410 if ((slot < 11) || (slot > 13) || pin == 0) 411 return -1; 412 if (slot == 11) 413 return (pin == 1) ? AU1550_PCI_INTC : 0xff; 414 if (slot == 12) { 415 switch (pin) { 416 case 1: return AU1550_PCI_INTB; 417 case 2: return AU1550_PCI_INTC; 418 case 3: return AU1550_PCI_INTD; 419 case 4: return AU1550_PCI_INTA; 420 } 421 } 422 if (slot == 13) { 423 switch (pin) { 424 case 1: return AU1550_PCI_INTA; 425 case 2: return AU1550_PCI_INTB; 426 case 3: return AU1550_PCI_INTC; 427 case 4: return AU1550_PCI_INTD; 428 } 429 } 430 return -1; 431 } 432 433 static int pb1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) 434 { 435 if ((slot < 12) || (slot > 13) || pin == 0) 436 return -1; 437 if (slot == 12) { 438 switch (pin) { 439 case 1: return AU1500_PCI_INTB; 440 case 2: return AU1500_PCI_INTC; 441 case 3: return AU1500_PCI_INTD; 442 case 4: return AU1500_PCI_INTA; 443 } 444 } 445 if (slot == 13) { 446 switch (pin) { 447 case 1: return AU1500_PCI_INTA; 448 case 2: return AU1500_PCI_INTB; 449 case 3: return AU1500_PCI_INTC; 450 case 4: return AU1500_PCI_INTD; 451 } 452 } 453 return -1; 454 } 455 456 static struct resource alchemy_pci_host_res[] = { 457 [0] = { 458 .start = AU1500_PCI_PHYS_ADDR, 459 .end = AU1500_PCI_PHYS_ADDR + 0xfff, 460 .flags = IORESOURCE_MEM, 461 }, 462 }; 463 464 static struct alchemy_pci_platdata db1550_pci_pd = { 465 .board_map_irq = db1550_map_pci_irq, 466 }; 467 468 static struct platform_device db1550_pci_host_dev = { 469 .dev.platform_data = &db1550_pci_pd, 470 .name = "alchemy-pci", 471 .id = 0, 472 .num_resources = ARRAY_SIZE(alchemy_pci_host_res), 473 .resource = alchemy_pci_host_res, 474 }; 475 476 /**********************************************************************/ 477 478 static struct platform_device *db1550_devs[] __initdata = { 479 &db1550_i2c_dev, 480 &db1550_ac97_dev, 481 &db1550_spi_dev, 482 &db1550_i2s_dev, 483 &db1550_stac_dev, 484 &db1550_ac97dma_dev, 485 &db1550_i2sdma_dev, 486 &db1550_sndac97_dev, 487 &db1550_sndi2s_dev, 488 }; 489 490 /* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ 491 int __init db1550_pci_setup(int id) 492 { 493 if (id) 494 db1550_pci_pd.board_map_irq = pb1550_map_pci_irq; 495 return platform_device_register(&db1550_pci_host_dev); 496 } 497 498 static void __init db1550_devices(void) 499 { 500 alchemy_gpio_direction_output(203, 0); /* red led on */ 501 502 irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_EDGE_BOTH); /* CD0# */ 503 irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_EDGE_BOTH); /* CD1# */ 504 irq_set_irq_type(AU1550_GPIO3_INT, IRQ_TYPE_LEVEL_LOW); /* CARD0# */ 505 irq_set_irq_type(AU1550_GPIO5_INT, IRQ_TYPE_LEVEL_LOW); /* CARD1# */ 506 irq_set_irq_type(AU1550_GPIO21_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG0# */ 507 irq_set_irq_type(AU1550_GPIO22_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG1# */ 508 509 db1x_register_pcmcia_socket( 510 AU1000_PCMCIA_ATTR_PHYS_ADDR, 511 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 512 AU1000_PCMCIA_MEM_PHYS_ADDR, 513 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 514 AU1000_PCMCIA_IO_PHYS_ADDR, 515 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1, 516 AU1550_GPIO3_INT, 0, 517 /*AU1550_GPIO21_INT*/0, 0, 0); 518 519 db1x_register_pcmcia_socket( 520 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000, 521 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1, 522 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000, 523 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1, 524 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000, 525 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1, 526 AU1550_GPIO5_INT, 1, 527 /*AU1550_GPIO22_INT*/0, 0, 1); 528 529 platform_device_register(&db1550_nand_dev); 530 531 alchemy_gpio_direction_output(202, 0); /* green led on */ 532 } 533 534 static void __init pb1550_devices(void) 535 { 536 irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_LEVEL_LOW); 537 irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_LEVEL_LOW); 538 irq_set_irq_type(AU1550_GPIO201_205_INT, IRQ_TYPE_LEVEL_HIGH); 539 540 /* enable both PCMCIA card irqs in the shared line */ 541 alchemy_gpio2_enable_int(201); /* socket 0 card irq */ 542 alchemy_gpio2_enable_int(202); /* socket 1 card irq */ 543 544 /* Pb1550, like all others, also has statuschange irqs; however they're 545 * wired up on one of the Au1550's shared GPIO201_205 line, which also 546 * services the PCMCIA card interrupts. So we ignore statuschange and 547 * use the GPIO201_205 exclusively for card interrupts, since a) pcmcia 548 * drivers are used to shared irqs and b) statuschange isn't really use- 549 * ful anyway. 550 */ 551 db1x_register_pcmcia_socket( 552 AU1000_PCMCIA_ATTR_PHYS_ADDR, 553 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 554 AU1000_PCMCIA_MEM_PHYS_ADDR, 555 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 556 AU1000_PCMCIA_IO_PHYS_ADDR, 557 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1, 558 AU1550_GPIO201_205_INT, AU1550_GPIO0_INT, 0, 0, 0); 559 560 db1x_register_pcmcia_socket( 561 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008000000, 562 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008400000 - 1, 563 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x008000000, 564 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x008400000 - 1, 565 AU1000_PCMCIA_IO_PHYS_ADDR + 0x008000000, 566 AU1000_PCMCIA_IO_PHYS_ADDR + 0x008010000 - 1, 567 AU1550_GPIO201_205_INT, AU1550_GPIO1_INT, 0, 0, 1); 568 569 pb1550_nand_setup(); 570 } 571 572 int __init db1550_dev_setup(void) 573 { 574 int swapped, id; 575 struct clk *c; 576 577 id = (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) != BCSR_WHOAMI_DB1550); 578 579 i2c_register_board_info(0, db1550_i2c_devs, 580 ARRAY_SIZE(db1550_i2c_devs)); 581 spi_register_board_info(db1550_spi_devs, 582 ARRAY_SIZE(db1550_i2c_devs)); 583 584 c = clk_get(NULL, "psc0_intclk"); 585 if (!IS_ERR(c)) { 586 clk_set_rate(c, 50000000); 587 clk_prepare_enable(c); 588 clk_put(c); 589 } 590 c = clk_get(NULL, "psc2_intclk"); 591 if (!IS_ERR(c)) { 592 clk_set_rate(c, db1550_spi_platdata.mainclk_hz); 593 clk_prepare_enable(c); 594 clk_put(c); 595 } 596 597 /* Audio PSC clock is supplied by codecs (PSC1, 3) FIXME: platdata!! */ 598 __raw_writel(PSC_SEL_CLK_SERCLK, 599 (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET); 600 wmb(); 601 __raw_writel(PSC_SEL_CLK_SERCLK, 602 (void __iomem *)KSEG1ADDR(AU1550_PSC3_PHYS_ADDR) + PSC_SEL_OFFSET); 603 wmb(); 604 /* SPI/I2C use internally supplied 50MHz source */ 605 __raw_writel(PSC_SEL_CLK_INTCLK, 606 (void __iomem *)KSEG1ADDR(AU1550_PSC0_PHYS_ADDR) + PSC_SEL_OFFSET); 607 wmb(); 608 __raw_writel(PSC_SEL_CLK_INTCLK, 609 (void __iomem *)KSEG1ADDR(AU1550_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET); 610 wmb(); 611 612 id ? pb1550_devices() : db1550_devices(); 613 614 swapped = bcsr_read(BCSR_STATUS) & 615 (id ? BCSR_STATUS_PB1550_SWAPBOOT : BCSR_STATUS_DB1000_SWAPBOOT); 616 db1x_register_norflash(128 << 20, 4, swapped); 617 618 return platform_add_devices(db1550_devs, ARRAY_SIZE(db1550_devs)); 619 } 620