1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * arch/arm/mach-ep93xx/ts72xx.c 4 * Technologic Systems TS72xx SBC support. 5 * 6 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/platform_device.h> 14 #include <linux/io.h> 15 #include <linux/mtd/platnand.h> 16 #include <linux/spi/spi.h> 17 #include <linux/spi/flash.h> 18 #include <linux/spi/mmc_spi.h> 19 #include <linux/mmc/host.h> 20 #include <linux/platform_data/spi-ep93xx.h> 21 #include <linux/gpio/machine.h> 22 23 #include "gpio-ep93xx.h" 24 #include "hardware.h" 25 #include <mach/irqs.h> 26 27 #include <asm/mach-types.h> 28 #include <asm/mach/map.h> 29 #include <asm/mach/arch.h> 30 31 #include "soc.h" 32 #include "ts72xx.h" 33 34 /************************************************************************* 35 * IO map 36 *************************************************************************/ 37 static struct map_desc ts72xx_io_desc[] __initdata = { 38 { 39 .virtual = (unsigned long)TS72XX_MODEL_VIRT_BASE, 40 .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), 41 .length = TS72XX_MODEL_SIZE, 42 .type = MT_DEVICE, 43 }, { 44 .virtual = (unsigned long)TS72XX_OPTIONS_VIRT_BASE, 45 .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), 46 .length = TS72XX_OPTIONS_SIZE, 47 .type = MT_DEVICE, 48 }, { 49 .virtual = (unsigned long)TS72XX_OPTIONS2_VIRT_BASE, 50 .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), 51 .length = TS72XX_OPTIONS2_SIZE, 52 .type = MT_DEVICE, 53 }, { 54 .virtual = (unsigned long)TS72XX_CPLDVER_VIRT_BASE, 55 .pfn = __phys_to_pfn(TS72XX_CPLDVER_PHYS_BASE), 56 .length = TS72XX_CPLDVER_SIZE, 57 .type = MT_DEVICE, 58 } 59 }; 60 61 static void __init ts72xx_map_io(void) 62 { 63 ep93xx_map_io(); 64 iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); 65 } 66 67 68 /************************************************************************* 69 * NAND flash 70 *************************************************************************/ 71 #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ 72 #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ 73 74 static void ts72xx_nand_hwcontrol(struct nand_chip *chip, 75 int cmd, unsigned int ctrl) 76 { 77 if (ctrl & NAND_CTRL_CHANGE) { 78 void __iomem *addr = chip->legacy.IO_ADDR_R; 79 unsigned char bits; 80 81 addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); 82 83 bits = __raw_readb(addr) & ~0x07; 84 bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ 85 bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ 86 bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ 87 88 __raw_writeb(bits, addr); 89 } 90 91 if (cmd != NAND_CMD_NONE) 92 __raw_writeb(cmd, chip->legacy.IO_ADDR_W); 93 } 94 95 static int ts72xx_nand_device_ready(struct nand_chip *chip) 96 { 97 void __iomem *addr = chip->legacy.IO_ADDR_R; 98 99 addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); 100 101 return !!(__raw_readb(addr) & 0x20); 102 } 103 104 #define TS72XX_BOOTROM_PART_SIZE (SZ_16K) 105 #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M) 106 107 static struct mtd_partition ts72xx_nand_parts[] = { 108 { 109 .name = "TS-BOOTROM", 110 .offset = 0, 111 .size = TS72XX_BOOTROM_PART_SIZE, 112 .mask_flags = MTD_WRITEABLE, /* force read-only */ 113 }, { 114 .name = "Linux", 115 .offset = MTDPART_OFS_RETAIN, 116 .size = TS72XX_REDBOOT_PART_SIZE, 117 /* leave so much for last partition */ 118 }, { 119 .name = "RedBoot", 120 .offset = MTDPART_OFS_APPEND, 121 .size = MTDPART_SIZ_FULL, 122 .mask_flags = MTD_WRITEABLE, /* force read-only */ 123 }, 124 }; 125 126 static struct platform_nand_data ts72xx_nand_data = { 127 .chip = { 128 .nr_chips = 1, 129 .chip_offset = 0, 130 .chip_delay = 15, 131 }, 132 .ctrl = { 133 .cmd_ctrl = ts72xx_nand_hwcontrol, 134 .dev_ready = ts72xx_nand_device_ready, 135 }, 136 }; 137 138 static struct resource ts72xx_nand_resource[] = { 139 { 140 .start = 0, /* filled in later */ 141 .end = 0, /* filled in later */ 142 .flags = IORESOURCE_MEM, 143 }, 144 }; 145 146 static struct platform_device ts72xx_nand_flash = { 147 .name = "gen_nand", 148 .id = -1, 149 .dev.platform_data = &ts72xx_nand_data, 150 .resource = ts72xx_nand_resource, 151 .num_resources = ARRAY_SIZE(ts72xx_nand_resource), 152 }; 153 154 void __init ts72xx_register_flash(struct mtd_partition *parts, int n, 155 resource_size_t start) 156 { 157 /* 158 * TS7200 has NOR flash all other TS72xx board have NAND flash. 159 */ 160 if (board_is_ts7200()) { 161 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 162 } else { 163 ts72xx_nand_resource[0].start = start; 164 ts72xx_nand_resource[0].end = start + SZ_16M - 1; 165 166 ts72xx_nand_data.chip.partitions = parts; 167 ts72xx_nand_data.chip.nr_partitions = n; 168 169 platform_device_register(&ts72xx_nand_flash); 170 } 171 } 172 173 /************************************************************************* 174 * RTC M48T86 175 *************************************************************************/ 176 #define TS72XX_RTC_INDEX_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x00800000) 177 #define TS72XX_RTC_DATA_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x01700000) 178 179 static struct resource ts72xx_rtc_resources[] = { 180 DEFINE_RES_MEM(TS72XX_RTC_INDEX_PHYS_BASE, 0x01), 181 DEFINE_RES_MEM(TS72XX_RTC_DATA_PHYS_BASE, 0x01), 182 }; 183 184 static struct platform_device ts72xx_rtc_device = { 185 .name = "rtc-m48t86", 186 .id = -1, 187 .resource = ts72xx_rtc_resources, 188 .num_resources = ARRAY_SIZE(ts72xx_rtc_resources), 189 }; 190 191 /************************************************************************* 192 * Watchdog (in CPLD) 193 *************************************************************************/ 194 #define TS72XX_WDT_CONTROL_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03800000) 195 #define TS72XX_WDT_FEED_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03c00000) 196 197 static struct resource ts72xx_wdt_resources[] = { 198 DEFINE_RES_MEM(TS72XX_WDT_CONTROL_PHYS_BASE, 0x01), 199 DEFINE_RES_MEM(TS72XX_WDT_FEED_PHYS_BASE, 0x01), 200 }; 201 202 static struct platform_device ts72xx_wdt_device = { 203 .name = "ts72xx-wdt", 204 .id = -1, 205 .resource = ts72xx_wdt_resources, 206 .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), 207 }; 208 209 /************************************************************************* 210 * ETH 211 *************************************************************************/ 212 static struct ep93xx_eth_data __initdata ts72xx_eth_data = { 213 .phy_id = 1, 214 }; 215 216 /************************************************************************* 217 * SPI SD/MMC host 218 *************************************************************************/ 219 #define BK3_EN_SDCARD_PHYS_BASE 0x12400000 220 #define BK3_EN_SDCARD_PWR 0x0 221 #define BK3_DIS_SDCARD_PWR 0x0C 222 static void bk3_mmc_spi_setpower(struct device *dev, unsigned int vdd) 223 { 224 void __iomem *pwr_sd = ioremap(BK3_EN_SDCARD_PHYS_BASE, SZ_4K); 225 226 if (!pwr_sd) { 227 pr_err("Failed to enable SD card power!"); 228 return; 229 } 230 231 pr_debug("%s: SD card pwr %s VDD:0x%x\n", __func__, 232 !!vdd ? "ON" : "OFF", vdd); 233 234 if (!!vdd) 235 __raw_writeb(BK3_EN_SDCARD_PWR, pwr_sd); 236 else 237 __raw_writeb(BK3_DIS_SDCARD_PWR, pwr_sd); 238 239 iounmap(pwr_sd); 240 } 241 242 static struct mmc_spi_platform_data bk3_spi_mmc_data = { 243 .detect_delay = 500, 244 .powerup_msecs = 100, 245 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, 246 .caps = MMC_CAP_NONREMOVABLE, 247 .setpower = bk3_mmc_spi_setpower, 248 }; 249 250 /************************************************************************* 251 * SPI Bus - SD card access 252 *************************************************************************/ 253 static struct spi_board_info bk3_spi_board_info[] __initdata = { 254 { 255 .modalias = "mmc_spi", 256 .platform_data = &bk3_spi_mmc_data, 257 .max_speed_hz = 7.4E6, 258 .bus_num = 0, 259 .chip_select = 0, 260 .mode = SPI_MODE_0, 261 }, 262 }; 263 264 /* 265 * This is a stub -> the FGPIO[3] pin is not connected on the schematic 266 * The all work is performed automatically by !SPI_FRAME (SFRM1) and 267 * goes through CPLD 268 */ 269 static struct gpiod_lookup_table bk3_spi_cs_gpio_table = { 270 .dev_id = "ep93xx-spi.0", 271 .table = { 272 GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW), 273 { }, 274 }, 275 }; 276 277 static struct ep93xx_spi_info bk3_spi_master __initdata = { 278 .use_dma = 1, 279 }; 280 281 /************************************************************************* 282 * TS72XX support code 283 *************************************************************************/ 284 #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX) 285 286 /* Relative to EP93XX_CS1_PHYS_BASE */ 287 #define TS73XX_FPGA_LOADER_BASE 0x03c00000 288 289 static struct resource ts73xx_fpga_resources[] = { 290 { 291 .start = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE, 292 .end = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE + 1, 293 .flags = IORESOURCE_MEM, 294 }, 295 }; 296 297 static struct platform_device ts73xx_fpga_device = { 298 .name = "ts73xx-fpga-mgr", 299 .id = -1, 300 .resource = ts73xx_fpga_resources, 301 .num_resources = ARRAY_SIZE(ts73xx_fpga_resources), 302 }; 303 304 #endif 305 306 /************************************************************************* 307 * SPI Bus 308 *************************************************************************/ 309 static struct spi_board_info ts72xx_spi_devices[] __initdata = { 310 { 311 .modalias = "tmp122", 312 .max_speed_hz = 2 * 1000 * 1000, 313 .bus_num = 0, 314 .chip_select = 0, 315 }, 316 }; 317 318 static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = { 319 .dev_id = "ep93xx-spi.0", 320 .table = { 321 /* DIO_17 */ 322 GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW), 323 { }, 324 }, 325 }; 326 327 static struct ep93xx_spi_info ts72xx_spi_info __initdata = { 328 /* Intentionally left blank */ 329 }; 330 331 static void __init ts72xx_init_machine(void) 332 { 333 ep93xx_init_devices(); 334 ts72xx_register_flash(ts72xx_nand_parts, ARRAY_SIZE(ts72xx_nand_parts), 335 is_ts9420_installed() ? 336 EP93XX_CS7_PHYS_BASE : EP93XX_CS6_PHYS_BASE); 337 platform_device_register(&ts72xx_rtc_device); 338 platform_device_register(&ts72xx_wdt_device); 339 340 ep93xx_register_eth(&ts72xx_eth_data, 1); 341 #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX) 342 if (board_is_ts7300()) 343 platform_device_register(&ts73xx_fpga_device); 344 #endif 345 gpiod_add_lookup_table(&ts72xx_spi_cs_gpio_table); 346 ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices, 347 ARRAY_SIZE(ts72xx_spi_devices)); 348 } 349 350 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") 351 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 352 .atag_offset = 0x100, 353 .map_io = ts72xx_map_io, 354 .init_irq = ep93xx_init_irq, 355 .init_time = ep93xx_timer_init, 356 .init_machine = ts72xx_init_machine, 357 .init_late = ep93xx_init_late, 358 .restart = ep93xx_restart, 359 MACHINE_END 360 361 /************************************************************************* 362 * EP93xx I2S audio peripheral handling 363 *************************************************************************/ 364 static struct resource ep93xx_i2s_resource[] = { 365 DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100), 366 DEFINE_RES_IRQ_NAMED(IRQ_EP93XX_SAI, "spilink i2s slave"), 367 }; 368 369 static struct platform_device ep93xx_i2s_device = { 370 .name = "ep93xx-spilink-i2s", 371 .id = -1, 372 .num_resources = ARRAY_SIZE(ep93xx_i2s_resource), 373 .resource = ep93xx_i2s_resource, 374 }; 375 376 /************************************************************************* 377 * BK3 support code 378 *************************************************************************/ 379 static struct mtd_partition bk3_nand_parts[] = { 380 { 381 .name = "System", 382 .offset = 0x00000000, 383 .size = 0x01e00000, 384 }, { 385 .name = "Data", 386 .offset = 0x01e00000, 387 .size = 0x05f20000 388 }, { 389 .name = "RedBoot", 390 .offset = 0x07d20000, 391 .size = 0x002e0000, 392 .mask_flags = MTD_WRITEABLE, /* force RO */ 393 }, 394 }; 395 396 static void __init bk3_init_machine(void) 397 { 398 ep93xx_init_devices(); 399 400 ts72xx_register_flash(bk3_nand_parts, ARRAY_SIZE(bk3_nand_parts), 401 EP93XX_CS6_PHYS_BASE); 402 403 ep93xx_register_eth(&ts72xx_eth_data, 1); 404 405 gpiod_add_lookup_table(&bk3_spi_cs_gpio_table); 406 ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info, 407 ARRAY_SIZE(bk3_spi_board_info)); 408 409 /* Configure ep93xx's I2S to use AC97 pins */ 410 ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97); 411 platform_device_register(&ep93xx_i2s_device); 412 } 413 414 MACHINE_START(BK3, "Liebherr controller BK3.1") 415 /* Maintainer: Lukasz Majewski <lukma@denx.de> */ 416 .atag_offset = 0x100, 417 .map_io = ts72xx_map_io, 418 .init_irq = ep93xx_init_irq, 419 .init_time = ep93xx_timer_init, 420 .init_machine = bk3_init_machine, 421 .init_late = ep93xx_init_late, 422 .restart = ep93xx_restart, 423 MACHINE_END 424