1# SPDX-License-Identifier: GPL-2.0 2# 3# Serial device configuration 4# 5 6menu "Serial drivers" 7 depends on HAS_IOMEM 8 9config SERIAL_EARLYCON 10 bool 11 depends on SERIAL_CORE 12 help 13 Support for early consoles with the earlycon parameter. This enables 14 the console before standard serial driver is probed. The console is 15 enabled when early_param is processed. 16 17source "drivers/tty/serial/8250/Kconfig" 18 19comment "Non-8250 serial port support" 20 21config SERIAL_AMBA_PL010 22 tristate "ARM AMBA PL010 serial port support" 23 depends on ARM_AMBA || COMPILE_TEST 24 select SERIAL_CORE 25 help 26 This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have 27 an Integrator/AP or Integrator/PP2 platform, or if you have a 28 Cirrus Logic EP93xx CPU, say Y or M here. 29 30 If unsure, say N. 31 32config SERIAL_AMBA_PL010_CONSOLE 33 bool "Support for console on AMBA serial port" 34 depends on SERIAL_AMBA_PL010=y 35 select SERIAL_CORE_CONSOLE 36 help 37 Say Y here if you wish to use an AMBA PrimeCell UART as the system 38 console (the system console is the device which receives all kernel 39 messages and warnings and which allows logins in single user mode). 40 41 Even if you say Y here, the currently visible framebuffer console 42 (/dev/tty0) will still be used as the system console by default, but 43 you can alter that using a kernel command line option such as 44 "console=ttyAM0". (Try "man bootparam" or see the documentation of 45 your boot loader (lilo or loadlin) about how to pass options to the 46 kernel at boot time.) 47 48config SERIAL_AMBA_PL011 49 tristate "ARM AMBA PL011 serial port support" 50 depends on ARM_AMBA 51 select SERIAL_CORE 52 help 53 This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have 54 an Integrator/PP2, Integrator/CP or Versatile platform, say Y or M 55 here. 56 57 If unsure, say N. 58 59config SERIAL_AMBA_PL011_CONSOLE 60 bool "Support for console on AMBA serial port" 61 depends on SERIAL_AMBA_PL011=y 62 select SERIAL_CORE_CONSOLE 63 select SERIAL_EARLYCON 64 help 65 Say Y here if you wish to use an AMBA PrimeCell UART as the system 66 console (the system console is the device which receives all kernel 67 messages and warnings and which allows logins in single user mode). 68 69 Even if you say Y here, the currently visible framebuffer console 70 (/dev/tty0) will still be used as the system console by default, but 71 you can alter that using a kernel command line option such as 72 "console=ttyAMA0". (Try "man bootparam" or see the documentation of 73 your boot loader (lilo or loadlin) about how to pass options to the 74 kernel at boot time.) 75 76config SERIAL_EARLYCON_SEMIHOST 77 bool "Early console using Arm compatible semihosting" 78 depends on ARM64 || ARM || RISCV 79 select SERIAL_CORE 80 select SERIAL_CORE_CONSOLE 81 select SERIAL_EARLYCON 82 help 83 Support for early debug console using Arm compatible semihosting. 84 This enables the console before standard serial driver is probed. 85 This is enabled with "earlycon=smh" on the kernel command line. 86 The console is enabled when early_param is processed. 87 88config SERIAL_EARLYCON_RISCV_SBI 89 bool "Early console using RISC-V SBI" 90 depends on RISCV_SBI 91 select SERIAL_CORE 92 select SERIAL_CORE_CONSOLE 93 select SERIAL_EARLYCON 94 help 95 Support for early debug console using RISC-V SBI. This enables 96 the console before standard serial driver is probed. This is enabled 97 with "earlycon=sbi" on the kernel command line. The console is 98 enabled when early_param is processed. 99 100config SERIAL_SB1250_DUART 101 tristate "BCM1xxx on-chip DUART serial support" 102 depends on SIBYTE_SB1xxx_SOC=y 103 select SERIAL_CORE 104 default y 105 help 106 Support for the asynchronous serial interface (DUART) included in 107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that 108 the letter D in DUART stands for "dual", which is how the device 109 is implemented. Depending on the SOC configuration there may be 110 one or more DUARTs available of which all are handled. 111 112 If unsure, say Y. To compile this driver as a module, choose M here: 113 the module will be called sb1250-duart. 114 115config SERIAL_SB1250_DUART_CONSOLE 116 bool "Support for console on a BCM1xxx DUART serial port" 117 depends on SERIAL_SB1250_DUART=y 118 select SERIAL_CORE_CONSOLE 119 default y 120 help 121 If you say Y here, it will be possible to use a serial port as the 122 system console (the system console is the device which receives all 123 kernel messages and warnings and which allows logins in single user 124 mode). 125 126 If unsure, say Y. 127 128config SERIAL_ATMEL 129 bool "AT91 on-chip serial port support" 130 depends on COMMON_CLK 131 depends on ARCH_AT91 || COMPILE_TEST 132 select SERIAL_CORE 133 select SERIAL_MCTRL_GPIO if GPIOLIB 134 select MFD_AT91_USART 135 help 136 This enables the driver for the on-chip UARTs of the Atmel 137 AT91 processors. 138 139config SERIAL_ATMEL_CONSOLE 140 bool "Support for console on AT91 serial port" 141 depends on SERIAL_ATMEL=y 142 select SERIAL_CORE_CONSOLE 143 select SERIAL_EARLYCON 144 help 145 Say Y here if you wish to use an on-chip UART on a Atmel 146 AT91 processor as the system console (the system 147 console is the device which receives all kernel messages and 148 warnings and which allows logins in single user mode). 149 150config SERIAL_ATMEL_PDC 151 bool "Support DMA transfers on AT91 serial port" 152 depends on SERIAL_ATMEL 153 default y 154 help 155 Say Y here if you wish to use the PDC to do DMA transfers to 156 and from the Atmel AT91 serial port. In order to 157 actually use DMA transfers, make sure that the use_dma_tx 158 and use_dma_rx members in the atmel_uart_data struct is set 159 appropriately for each port. 160 161 Note that break and error handling currently doesn't work 162 properly when DMA is enabled. Make sure that ports where 163 this matters don't use DMA. 164 165config SERIAL_ATMEL_TTYAT 166 bool "Install as device ttyATn instead of ttySn" 167 depends on SERIAL_ATMEL=y 168 help 169 Say Y here if you wish to have the internal AT91 UARTs 170 appear as /dev/ttyATn (major 204, minor starting at 154) 171 instead of the normal /dev/ttySn (major 4, minor starting at 172 64). This is necessary if you also want other UARTs, such as 173 external 8250/16C550 compatible UARTs. 174 The ttySn nodes are legally reserved for the 8250 serial driver 175 but are often misused by other serial drivers. 176 177 To use this, you should create suitable ttyATn device nodes in 178 /dev/, and pass "console=ttyATn" to the kernel. 179 180 Say Y if you have an external 8250/16C550 UART. If unsure, say N. 181 182config SERIAL_KGDB_NMI 183 bool "Serial console over KGDB NMI debugger port" 184 depends on KGDB_SERIAL_CONSOLE 185 help 186 This special driver allows you to temporary use NMI debugger port 187 as a normal console (assuming that the port is attached to KGDB). 188 189 Unlike KDB's disable_nmi command, with this driver you are always 190 able to go back to the debugger using KGDB escape sequence ($3#33). 191 This is because this console driver processes the input in NMI 192 context, and thus is able to intercept the magic sequence. 193 194 Note that since the console interprets input and uses polling 195 communication methods, for things like PPP you still must fully 196 detach debugger port from the KGDB NMI (i.e. disable_nmi), and 197 use raw console. 198 199 If unsure, say N. 200 201config SERIAL_MESON 202 tristate "Meson serial port support" 203 depends on ARCH_MESON || COMPILE_TEST 204 select SERIAL_CORE 205 help 206 This enables the driver for the on-chip UARTs of the Amlogic 207 MesonX processors. 208 209config SERIAL_MESON_CONSOLE 210 bool "Support for console on meson" 211 depends on SERIAL_MESON 212 select SERIAL_CORE_CONSOLE 213 select SERIAL_EARLYCON 214 help 215 Say Y here if you wish to use a Amlogic MesonX UART as the 216 system console (the system console is the device which 217 receives all kernel messages and warnings and which allows 218 logins in single user mode) as /dev/ttyAMLx. 219 220config SERIAL_CLPS711X 221 tristate "CLPS711X serial port support" 222 depends on ARCH_CLPS711X || COMPILE_TEST 223 select SERIAL_CORE 224 select SERIAL_MCTRL_GPIO if GPIOLIB 225 help 226 This enables the driver for the on-chip UARTs of the Cirrus 227 Logic EP711x/EP721x/EP731x processors. 228 229config SERIAL_CLPS711X_CONSOLE 230 bool "Support for console on CLPS711X serial port" 231 depends on SERIAL_CLPS711X=y 232 select SERIAL_CORE_CONSOLE 233 help 234 Even if you say Y here, the currently visible virtual console 235 (/dev/tty0) will still be used as the system console by default, but 236 you can alter that using a kernel command line option such as 237 "console=ttyCL1". 238 239config SERIAL_SAMSUNG 240 tristate "Samsung SoC serial support" 241 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST 242 select SERIAL_CORE 243 help 244 Support for the on-chip UARTs on the Samsung 245 S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing 246 /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of 247 these ports, depending on how the serial port pins are configured. 248 249 Choose Y/M here only if you build for such SoC. 250 251config SERIAL_SAMSUNG_UARTS 252 int 253 depends on SERIAL_SAMSUNG 254 default 4 255 help 256 Select the number of available UART ports for the Samsung S3C 257 serial driver 258 259config SERIAL_SAMSUNG_CONSOLE 260 bool "Support for console on Samsung SoC serial port" 261 depends on SERIAL_SAMSUNG 262 select SERIAL_CORE_CONSOLE 263 select SERIAL_EARLYCON 264 help 265 Allow selection of the S3C24XX on-board serial ports for use as 266 an virtual console. 267 268 Even if you say Y here, the currently visible virtual console 269 (/dev/tty0) will still be used as the system console by default, but 270 you can alter that using a kernel command line option such as 271 "console=ttySACx". (Try "man bootparam" or see the documentation of 272 your boot loader about how to pass options to the kernel at 273 boot time.) 274 275config SERIAL_TEGRA 276 tristate "NVIDIA Tegra20/30 SoC serial controller" 277 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST 278 select SERIAL_CORE 279 help 280 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs 281 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not 282 provide all of these ports, depending on how the serial port 283 are enabled). This driver uses the APB DMA to achieve higher baudrate 284 and better performance. 285 286config SERIAL_TEGRA_TCU 287 tristate "NVIDIA Tegra Combined UART" 288 depends on MAILBOX 289 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST 290 select SERIAL_CORE 291 help 292 Support for the mailbox-based TCU (Tegra Combined UART) serial port. 293 TCU is a virtual serial port that allows multiplexing multiple data 294 streams into a single hardware serial port. 295 296config SERIAL_TEGRA_TCU_CONSOLE 297 bool "Support for console on a Tegra TCU serial port" 298 depends on SERIAL_TEGRA_TCU=y 299 select SERIAL_CORE_CONSOLE 300 default y 301 help 302 If you say Y here, it will be possible to use a the Tegra TCU as the 303 system console (the system console is the device which receives all 304 kernel messages and warnings and which allows logins in single user 305 mode). 306 307 If unsure, say Y. 308 309config SERIAL_MAX3100 310 tristate "MAX3100/3110/3111/3222 support" 311 depends on SPI 312 select SERIAL_CORE 313 help 314 This selects support for an advanced UART from Maxim. 315 Supported ICs are MAX3100, MAX3110, MAX3111, MAX3222. 316 317 Say Y here if you want to support these ICs. 318 319config SERIAL_MAX310X 320 tristate "MAX310X support" 321 depends on SPI_MASTER 322 select SERIAL_CORE 323 select REGMAP_SPI if SPI_MASTER 324 select REGMAP_I2C if I2C 325 help 326 This selects support for an advanced UART from Maxim (Dallas). 327 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830. 328 Each IC contains 128 words each of receive and transmit FIFO 329 that can be controlled through I2C or high-speed SPI. 330 331 Say Y here if you want to support this ICs. 332 333config SERIAL_DZ 334 bool "DECstation DZ serial driver" 335 depends on MACH_DECSTATION && 32BIT 336 select SERIAL_CORE 337 default y 338 help 339 DZ11-family serial controllers for DECstations and VAXstations, 340 including the DC7085, M7814, and M7819. 341 342config SERIAL_DZ_CONSOLE 343 bool "Support console on DECstation DZ serial driver" 344 depends on SERIAL_DZ=y 345 select SERIAL_CORE_CONSOLE 346 default y 347 help 348 If you say Y here, it will be possible to use a serial port as the 349 system console (the system console is the device which receives all 350 kernel messages and warnings and which allows logins in single user 351 mode). 352 353 Note that the firmware uses ttyS3 as the serial console on 354 DECstations that use this driver. 355 356 If unsure, say Y. 357 358config SERIAL_ZS 359 tristate "DECstation Z85C30 serial support" 360 depends on MACH_DECSTATION 361 select SERIAL_CORE 362 default y 363 help 364 Support for the Zilog 85C350 serial communications controller used 365 for serial ports in newer DECstation systems. These include the 366 DECsystem 5900 and all models of the DECstation and DECsystem 5000 367 systems except from model 200. 368 369 If unsure, say Y. To compile this driver as a module, choose M here: 370 the module will be called zs. 371 372config SERIAL_ZS_CONSOLE 373 bool "Support for console on a DECstation Z85C30 serial port" 374 depends on SERIAL_ZS=y 375 select SERIAL_CORE_CONSOLE 376 default y 377 help 378 If you say Y here, it will be possible to use a serial port as the 379 system console (the system console is the device which receives all 380 kernel messages and warnings and which allows logins in single user 381 mode). 382 383 Note that the firmware uses ttyS1 as the serial console on the 384 Maxine and ttyS3 on the others using this driver. 385 386 If unsure, say Y. 387 388config SERIAL_21285 389 tristate "DC21285 serial port support" 390 depends on FOOTBRIDGE 391 select SERIAL_CORE 392 help 393 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/ 394 PCI bridge you can enable its onboard serial port by enabling this 395 option. 396 397config SERIAL_21285_CONSOLE 398 bool "Console on DC21285 serial port" 399 depends on SERIAL_21285=y 400 select SERIAL_CORE_CONSOLE 401 help 402 If you have enabled the serial port on the 21285 footbridge you can 403 make it the console by answering Y to this option. 404 405 Even if you say Y here, the currently visible virtual console 406 (/dev/tty0) will still be used as the system console by default, but 407 you can alter that using a kernel command line option such as 408 "console=ttyFB". (Try "man bootparam" or see the documentation of 409 your boot loader (lilo or loadlin) about how to pass options to the 410 kernel at boot time.) 411 412config SERIAL_PXA 413 bool "PXA serial port support (DEPRECATED)" 414 depends on ARCH_PXA || ARCH_MMP 415 select SERIAL_CORE 416 select SERIAL_8250_PXA if SERIAL_8250=y 417 select SERIAL_PXA_NON8250 if !SERIAL_8250=y 418 help 419 If you have a machine based on an Intel XScale PXA2xx CPU you 420 can enable its onboard serial ports by enabling this option. 421 422 Unless you have a specific need, you should use SERIAL_8250_PXA 423 instead of this. 424 425config SERIAL_PXA_NON8250 426 bool 427 depends on !SERIAL_8250 || COMPILE_TEST 428 429config SERIAL_PXA_CONSOLE 430 bool "Console on PXA serial port (DEPRECATED)" 431 depends on SERIAL_PXA 432 select SERIAL_CORE_CONSOLE 433 select SERIAL_8250_CONSOLE if SERIAL_8250=y 434 help 435 If you have enabled the serial port on the Intel XScale PXA 436 CPU you can make it the console by answering Y to this option. 437 438 Even if you say Y here, the currently visible virtual console 439 (/dev/tty0) will still be used as the system console by default, but 440 you can alter that using a kernel command line option such as 441 "console=ttySA0". (Try "man bootparam" or see the documentation of 442 your boot loader (lilo or loadlin) about how to pass options to the 443 kernel at boot time.) 444 445 Unless you have a specific need, you should use SERIAL_8250_PXA 446 and SERIAL_8250_CONSOLE instead of this. 447 448config SERIAL_SA1100 449 bool "SA1100 serial port support" 450 depends on ARCH_SA1100 451 select SERIAL_CORE 452 select SERIAL_MCTRL_GPIO if GPIOLIB 453 help 454 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you 455 can enable its onboard serial port by enabling this option. 456 Please read <file:Documentation/arch/arm/sa1100/serial_uart.rst> for 457 further info. 458 459config SERIAL_SA1100_CONSOLE 460 bool "Console on SA1100 serial port" 461 depends on SERIAL_SA1100 462 select SERIAL_CORE_CONSOLE 463 help 464 If you have enabled the serial port on the SA1100/SA1110 StrongARM 465 CPU you can make it the console by answering Y to this option. 466 467 Even if you say Y here, the currently visible virtual console 468 (/dev/tty0) will still be used as the system console by default, but 469 you can alter that using a kernel command line option such as 470 "console=ttySA0". (Try "man bootparam" or see the documentation of 471 your boot loader (lilo or loadlin) about how to pass options to the 472 kernel at boot time.) 473 474config SERIAL_IMX 475 tristate "IMX serial port support" 476 depends on ARCH_MXC || COMPILE_TEST 477 select SERIAL_CORE 478 select RATIONAL 479 select SERIAL_MCTRL_GPIO if GPIOLIB 480 help 481 If you have a machine based on a Motorola IMX CPU you 482 can enable its onboard serial port by enabling this option. 483 484config SERIAL_IMX_CONSOLE 485 tristate "Console on IMX serial port" 486 depends on SERIAL_IMX 487 select SERIAL_CORE_CONSOLE 488 help 489 If you have enabled the serial port on the Freescale IMX 490 CPU you can make it the console by answering Y/M to this option. 491 492 Even if you say Y/M here, the currently visible virtual console 493 (/dev/tty0) will still be used as the system console by default, but 494 you can alter that using a kernel command line option such as 495 "console=ttymxc0". (Try "man bootparam" or see the documentation of 496 your bootloader about how to pass options to the kernel at boot time.) 497 498config SERIAL_IMX_EARLYCON 499 bool "Earlycon on IMX serial port" 500 depends on ARCH_MXC || COMPILE_TEST 501 depends on OF 502 select SERIAL_CORE 503 select SERIAL_EARLYCON 504 select SERIAL_CORE_CONSOLE 505 default y if SERIAL_IMX_CONSOLE 506 help 507 If you have enabled the earlycon on the Freescale IMX 508 CPU you can make it the earlycon by answering Y to this option. 509 510config SERIAL_UARTLITE 511 tristate "Xilinx uartlite serial port support" 512 depends on HAS_IOMEM 513 select SERIAL_CORE 514 help 515 Say Y here if you want to use the Xilinx uartlite serial controller. 516 517 To compile this driver as a module, choose M here: the 518 module will be called uartlite. 519 520config SERIAL_UARTLITE_CONSOLE 521 bool "Support for console on Xilinx uartlite serial port" 522 depends on SERIAL_UARTLITE=y 523 select SERIAL_CORE_CONSOLE 524 select SERIAL_EARLYCON 525 help 526 Say Y here if you wish to use a Xilinx uartlite as the system 527 console (the system console is the device which receives all kernel 528 messages and warnings and which allows logins in single user mode). 529 530config SERIAL_UARTLITE_NR_UARTS 531 int "Maximum number of uartlite serial ports" 532 depends on SERIAL_UARTLITE 533 range 1 256 534 default 1 535 help 536 Set this to the number of uartlites in your system, or the number 537 you think you might implement. 538 If maximum number of uartlite serial ports is more than 4, then the 539 driver uses dynamic allocation instead of static allocation for major 540 number. 541 542config SERIAL_SUNCORE 543 bool 544 depends on SPARC 545 select SERIAL_CORE 546 select SERIAL_CORE_CONSOLE 547 default y 548 549config SERIAL_SUNZILOG 550 tristate "Sun Zilog8530 serial support" 551 depends on SPARC 552 help 553 This driver supports the Zilog8530 serial ports found on many Sparc 554 systems. Say Y or M if you want to be able to these serial ports. 555 556config SERIAL_SUNZILOG_CONSOLE 557 bool "Console on Sun Zilog8530 serial port" 558 depends on SERIAL_SUNZILOG=y 559 help 560 If you would like to be able to use the Zilog8530 serial port 561 on your Sparc system as the console, you can do so by answering 562 Y to this option. 563 564config SERIAL_SUNSU 565 tristate "Sun SU serial support" 566 depends on SPARC && PCI 567 help 568 This driver supports the 8250 serial ports that run the keyboard and 569 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able 570 to these serial ports. 571 572config SERIAL_SUNSU_CONSOLE 573 bool "Console on Sun SU serial port" 574 depends on SERIAL_SUNSU=y 575 help 576 If you would like to be able to use the SU serial port 577 on your Sparc system as the console, you can do so by answering 578 Y to this option. 579 580config SERIAL_MUX 581 tristate "Serial MUX support" 582 depends on GSC 583 select SERIAL_CORE 584 default y 585 help 586 Saying Y here will enable the hardware MUX serial driver for 587 the Nova, K class systems and D class with a 'remote control card'. 588 The hardware MUX is not 8250/16550 compatible therefore the 589 /dev/ttyB0 device is shared between the Serial MUX and the PDC 590 software console. The following steps need to be completed to use 591 the Serial MUX: 592 593 1. create the device entry (mknod /dev/ttyB0 c 11 0) 594 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0 595 3. Add device ttyB0 to /etc/securetty (if you want to log on as 596 root on this console.) 597 4. Change the kernel command console parameter to: console=ttyB0 598 599config SERIAL_MUX_CONSOLE 600 bool "Support for console on serial MUX" 601 depends on SERIAL_MUX=y 602 select SERIAL_CORE_CONSOLE 603 default y 604 605config SERIAL_SUNSAB 606 tristate "Sun Siemens SAB82532 serial support" 607 depends on SPARC && PCI 608 help 609 This driver supports the Siemens SAB82532 DUSCC serial ports on newer 610 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these 611 serial ports. 612 613config SERIAL_SUNSAB_CONSOLE 614 bool "Console on Sun Siemens SAB82532 serial port" 615 depends on SERIAL_SUNSAB=y 616 help 617 If you would like to be able to use the SAB82532 serial port 618 on your Sparc system as the console, you can do so by answering 619 Y to this option. 620 621config SERIAL_SUNHV 622 bool "Sun4v Hypervisor Console support" 623 depends on SPARC64 624 help 625 This driver supports the console device found on SUN4V Sparc 626 systems. Say Y if you want to be able to use this device. 627 628config SERIAL_IP22_ZILOG 629 tristate "SGI Zilog8530 serial support" 630 depends on SGI_HAS_ZILOG 631 select SERIAL_CORE 632 help 633 This driver supports the Zilog8530 serial ports found on SGI 634 systems. Say Y or M if you want to be able to these serial ports. 635 636config SERIAL_IP22_ZILOG_CONSOLE 637 bool "Console on SGI Zilog8530 serial port" 638 depends on SERIAL_IP22_ZILOG=y 639 select SERIAL_CORE_CONSOLE 640 641config SERIAL_SH_SCI 642 tristate "SuperH SCI(F) serial port support" 643 depends on SUPERH || ARCH_RENESAS || COMPILE_TEST 644 select SERIAL_CORE 645 select SERIAL_MCTRL_GPIO if GPIOLIB 646 647config SERIAL_SH_SCI_NR_UARTS 648 int "Maximum number of SCI(F) serial ports" if EXPERT 649 range 1 64 if 64BIT 650 range 1 32 if !64BIT 651 depends on SERIAL_SH_SCI 652 default "10" if SUPERH 653 default "18" if ARCH_RENESAS 654 default "2" 655 656config SERIAL_SH_SCI_CONSOLE 657 bool "Support for console on SuperH SCI(F)" if EXPERT 658 depends on SERIAL_SH_SCI=y 659 select SERIAL_CORE_CONSOLE 660 default y 661 662config SERIAL_SH_SCI_EARLYCON 663 bool "Support for early console on SuperH SCI(F)" if EXPERT 664 depends on SERIAL_SH_SCI=y 665 select SERIAL_CORE_CONSOLE 666 select SERIAL_EARLYCON 667 default ARCH_RENESAS 668 669config SERIAL_SH_SCI_DMA 670 bool "DMA support" if EXPERT 671 depends on SERIAL_SH_SCI && DMA_ENGINE 672 default ARCH_RENESAS 673 674config SERIAL_HS_LPC32XX 675 tristate "LPC32XX high speed serial port support" 676 depends on ARCH_LPC32XX || COMPILE_TEST 677 depends on OF 678 select SERIAL_CORE 679 help 680 Support for the LPC32XX high speed serial ports (up to 900kbps). 681 Those are UARTs completely different from the Standard UARTs on the 682 LPC32XX SoC. 683 Choose M or Y here to build this driver. 684 685config SERIAL_HS_LPC32XX_CONSOLE 686 bool "Enable LPC32XX high speed UART serial console" 687 depends on SERIAL_HS_LPC32XX=y 688 select SERIAL_CORE_CONSOLE 689 help 690 If you would like to be able to use one of the high speed serial 691 ports on the LPC32XX as the console, you can do so by answering 692 Y to this option. 693 694config SERIAL_CORE 695 tristate 696 697config SERIAL_CORE_CONSOLE 698 bool 699 700config CONSOLE_POLL 701 bool 702 703config SERIAL_MCF 704 bool "Coldfire serial support" 705 depends on COLDFIRE 706 select SERIAL_CORE 707 help 708 This serial driver supports the Freescale Coldfire serial ports. 709 710config SERIAL_MCF_BAUDRATE 711 int "Default baudrate for Coldfire serial ports" 712 depends on SERIAL_MCF 713 default 19200 714 help 715 This setting lets you define what the default baudrate is for the 716 ColdFire serial ports. The usual default varies from board to board, 717 and this setting is a way of catering for that. 718 719config SERIAL_MCF_CONSOLE 720 bool "Coldfire serial console support" 721 depends on SERIAL_MCF 722 select SERIAL_CORE_CONSOLE 723 help 724 Enable a ColdFire internal serial port to be the system console. 725 726config SERIAL_PMACZILOG 727 tristate "Mac or PowerMac z85c30 ESCC support" 728 depends on (M68K && MAC) || PPC_PMAC 729 select SERIAL_CORE 730 help 731 This driver supports the Zilog z85C30 serial ports found on 732 (Power)Mac machines. 733 Say Y or M if you want to be able to these serial ports. 734 735config SERIAL_PMACZILOG_TTYS 736 bool "Use ttySn device nodes for Zilog z85c30" 737 depends on SERIAL_PMACZILOG 738 help 739 The pmac_zilog driver for the z85C30 chip on many powermacs 740 historically used the device numbers for /dev/ttySn. The 741 8250 serial port driver also uses these numbers, which means 742 the two drivers being unable to coexist; you could not use 743 both z85C30 and 8250 type ports at the same time. 744 745 If this option is not selected, the pmac_zilog driver will 746 use the device numbers allocated for /dev/ttyPZn. This allows 747 the pmac_zilog and 8250 drivers to co-exist, but may cause 748 existing userspace setups to break. Programs that need to 749 access the built-in serial ports on powermacs will need to 750 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn. 751 752 If you enable this option, any z85c30 ports in the system will 753 be registered as ttyS0 onwards as in the past, and you will be 754 unable to use the 8250 module for PCMCIA or other 16C550-style 755 UARTs. 756 757 Say N unless you need the z85c30 ports on your (Power)Mac 758 to appear as /dev/ttySn. 759 760config SERIAL_PMACZILOG_CONSOLE 761 bool "Console on Mac or PowerMac z85c30 serial port" 762 depends on SERIAL_PMACZILOG=y 763 select SERIAL_CORE_CONSOLE 764 help 765 If you would like to be able to use the z85c30 serial port 766 on your (Power)Mac as the console, you can do so by answering 767 Y to this option. 768 769config SERIAL_CPM 770 tristate "CPM SCC/SMC serial port support" 771 depends on CPM2 || CPM1 772 select SERIAL_CORE 773 help 774 This driver supports the SCC and SMC serial ports on Motorola 775 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx) 776 777config SERIAL_CPM_CONSOLE 778 bool "Support for console on CPM SCC/SMC serial port" 779 depends on SERIAL_CPM=y 780 select SERIAL_CORE_CONSOLE 781 help 782 Say Y here if you wish to use a SCC or SMC CPM UART as the system 783 console (the system console is the device which receives all kernel 784 messages and warnings and which allows logins in single user mode). 785 786 Even if you say Y here, the currently visible framebuffer console 787 (/dev/tty0) will still be used as the system console by default, but 788 you can alter that using a kernel command line option such as 789 "console=ttyCPM0". (Try "man bootparam" or see the documentation of 790 your boot loader (lilo or loadlin) about how to pass options to the 791 kernel at boot time.) 792 793config SERIAL_PIC32 794 tristate "Microchip PIC32 serial support" 795 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 796 select SERIAL_CORE 797 help 798 If you have a PIC32, this driver supports the serial ports. 799 800 Say Y or M to use PIC32 serial ports, otherwise say N. Note that 801 to use a serial port as a console, this must be included in kernel and 802 not as a module. 803 804config SERIAL_PIC32_CONSOLE 805 bool "PIC32 serial console support" 806 depends on SERIAL_PIC32=y 807 select SERIAL_CORE_CONSOLE 808 help 809 If you have a PIC32, this driver supports the putting a console on one 810 of the serial ports. 811 812 Say Y to use the PIC32 console, otherwise say N. 813 814config SERIAL_MPC52xx 815 tristate "Freescale MPC52xx/MPC512x family PSC serial support" 816 depends on PPC_MPC52xx || PPC_MPC512x 817 select SERIAL_CORE 818 help 819 This driver supports MPC52xx and MPC512x PSC serial ports. If you would 820 like to use them, you must answer Y or M to this option. Note that 821 for use as console, it must be included in kernel and not as a 822 module. 823 824config SERIAL_MPC52xx_CONSOLE 825 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port" 826 depends on SERIAL_MPC52xx=y 827 select SERIAL_CORE_CONSOLE 828 help 829 Select this options if you'd like to use one of the PSC serial port 830 of the Freescale MPC52xx family as a console. 831 832config SERIAL_MPC52xx_CONSOLE_BAUD 833 int "Freescale MPC52xx/MPC512x family PSC serial port baud" 834 depends on SERIAL_MPC52xx_CONSOLE=y 835 default "9600" 836 help 837 Select the MPC52xx console baud rate. 838 This value is only used if the bootloader doesn't pass in the 839 console baudrate 840 841config SERIAL_ICOM 842 tristate "IBM Multiport Serial Adapter" 843 depends on PCI 844 depends on PPC_PSERIES || COMPILE_TEST 845 select SERIAL_CORE 846 select FW_LOADER 847 help 848 This driver is for a family of multiport serial adapters 849 including 2 port RVX, 2 port internal modem, 4 port internal 850 modem and a split 1 port RVX and 1 port internal modem. 851 852 This driver can also be built as a module. If so, the module 853 will be called icom. 854 855config SERIAL_TXX9 856 bool "TMPTX39XX/49XX SIO support" 857 depends on HAS_TXX9_SERIAL 858 select SERIAL_CORE 859 default y 860 861config HAS_TXX9_SERIAL 862 bool 863 864config SERIAL_TXX9_NR_UARTS 865 int "Maximum number of TMPTX39XX/49XX SIO ports" 866 depends on SERIAL_TXX9 867 default "6" 868 869config SERIAL_TXX9_CONSOLE 870 bool "TMPTX39XX/49XX SIO Console support" 871 depends on SERIAL_TXX9=y 872 select SERIAL_CORE_CONSOLE 873 874config SERIAL_TXX9_STDSERIAL 875 bool "TX39XX/49XX SIO act as standard serial" 876 depends on !SERIAL_8250 && SERIAL_TXX9 877 878config SERIAL_JSM 879 tristate "Digi International NEO and Classic PCI Support" 880 depends on PCI && HAS_IOPORT 881 select SERIAL_CORE 882 help 883 This is a driver for Digi International's Neo and Classic series 884 of cards which provide multiple serial ports. You would need 885 something like this to connect more than two modems to your Linux 886 box, for instance in order to become a dial-in server. This driver 887 supports PCI boards only. 888 889 If you have a card like this, say Y here, otherwise say N. 890 891 To compile this driver as a module, choose M here: the 892 module will be called jsm. 893 894config SERIAL_MSM 895 tristate "MSM on-chip serial port support" 896 depends on ARCH_QCOM || COMPILE_TEST 897 select SERIAL_CORE 898 899config SERIAL_MSM_CONSOLE 900 bool "MSM serial console support" 901 depends on SERIAL_MSM=y 902 select SERIAL_CORE_CONSOLE 903 select SERIAL_EARLYCON 904 905config SERIAL_QCOM_GENI 906 tristate "QCOM on-chip GENI based serial port support" 907 depends on ARCH_QCOM || COMPILE_TEST 908 depends on QCOM_GENI_SE 909 select SERIAL_CORE 910 911config SERIAL_QCOM_GENI_CONSOLE 912 bool "QCOM GENI Serial Console support" 913 depends on SERIAL_QCOM_GENI 914 select SERIAL_CORE_CONSOLE 915 select SERIAL_EARLYCON 916 help 917 Serial console driver for Qualcomm Technologies Inc's GENI based 918 QUP hardware. 919 920config SERIAL_VT8500 921 bool "VIA VT8500 on-chip serial port support" 922 depends on ARCH_VT8500 || COMPILE_TEST 923 select SERIAL_CORE 924 925config SERIAL_VT8500_CONSOLE 926 bool "VIA VT8500 serial console support" 927 depends on SERIAL_VT8500=y 928 select SERIAL_CORE_CONSOLE 929 930config SERIAL_OMAP 931 tristate "OMAP serial port support" 932 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST 933 select SERIAL_CORE 934 help 935 If you have a machine based on an Texas Instruments OMAP CPU you 936 can enable its onboard serial ports by enabling this option. 937 938 By enabling this option you take advantage of dma feature available 939 with the omap-serial driver. DMA support can be enabled from platform 940 data. 941 942config SERIAL_OMAP_CONSOLE 943 bool "Console on OMAP serial port" 944 depends on SERIAL_OMAP=y 945 select SERIAL_CORE_CONSOLE 946 help 947 Select this option if you would like to use omap serial port as 948 console. 949 950 Even if you say Y here, the currently visible virtual console 951 (/dev/tty0) will still be used as the system console by default, but 952 you can alter that using a kernel command line option such as 953 "console=ttyOx". (Try "man bootparam" or see the documentation of 954 your boot loader about how to pass options to the kernel at 955 boot time.) 956 957config SERIAL_SIFIVE 958 tristate "SiFive UART support" 959 depends on OF 960 default ARCH_SIFIVE || ARCH_CANAAN 961 select SERIAL_CORE 962 help 963 Select this option if you are building a kernel for a device that 964 contains a SiFive UART IP block. This type of UART is present on 965 SiFive FU540 SoCs, among others. 966 967config SERIAL_SIFIVE_CONSOLE 968 bool "Console on SiFive UART" 969 depends on SERIAL_SIFIVE=y 970 default ARCH_SIFIVE || ARCH_CANAAN 971 select SERIAL_CORE_CONSOLE 972 select SERIAL_EARLYCON 973 help 974 Select this option if you would like to use a SiFive UART as the 975 system console. 976 977 Even if you say Y here, the currently visible virtual console 978 (/dev/tty0) will still be used as the system console by default, but 979 you can alter that using a kernel command line option such as 980 "console=ttySIFx". (Try "man bootparam" or see the documentation of 981 your boot loader about how to pass options to the kernel at 982 boot time.) 983 984config SERIAL_LANTIQ 985 tristate "Lantiq serial driver" 986 depends on (LANTIQ || X86) || COMPILE_TEST 987 select SERIAL_CORE 988 help 989 Support for UART on Lantiq and Intel SoCs. 990 To compile this driver as a module, select M here. The 991 module will be called lantiq. 992 993config SERIAL_LANTIQ_CONSOLE 994 bool "Console on Lantiq UART" 995 depends on SERIAL_LANTIQ=y 996 select SERIAL_CORE_CONSOLE 997 select SERIAL_EARLYCON 998 help 999 Select this option if you would like to use a Lantiq UART as the 1000 system console. 1001 1002config SERIAL_QE 1003 tristate "Freescale QUICC Engine serial port support" 1004 depends on QUICC_ENGINE 1005 select SERIAL_CORE 1006 select FW_LOADER 1007 help 1008 This driver supports the QE serial ports on Freescale embedded 1009 PowerPC that contain a QUICC Engine. 1010 1011config SERIAL_SCCNXP 1012 tristate "SCCNXP serial port support" 1013 select SERIAL_CORE 1014 help 1015 This selects support for an advanced UART from NXP (Philips). 1016 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92, 1017 SC28L202, SCC68681 and SCC68692. 1018 1019config SERIAL_SCCNXP_CONSOLE 1020 bool "Console on SCCNXP serial port" 1021 depends on SERIAL_SCCNXP=y 1022 select SERIAL_CORE_CONSOLE 1023 help 1024 Support for console on SCCNXP serial ports. 1025 1026config SERIAL_SC16IS7XX 1027 tristate "NXP SC16IS7xx UART support" 1028 depends on SPI_MASTER || I2C 1029 select SERIAL_CORE 1030 select SERIAL_SC16IS7XX_SPI if SPI_MASTER 1031 select SERIAL_SC16IS7XX_I2C if I2C 1032 help 1033 Core driver for NXP SC16IS7xx UARTs. 1034 Supported ICs are: 1035 1036 SC16IS740 1037 SC16IS741 1038 SC16IS750 1039 SC16IS752 1040 SC16IS760 1041 SC16IS762 1042 1043 The driver supports both I2C and SPI interfaces. 1044 1045config SERIAL_SC16IS7XX_I2C 1046 tristate 1047 select REGMAP_I2C 1048 1049config SERIAL_SC16IS7XX_SPI 1050 tristate 1051 select REGMAP_SPI 1052 1053config SERIAL_TIMBERDALE 1054 tristate "Support for timberdale UART" 1055 select SERIAL_CORE 1056 depends on X86_32 || COMPILE_TEST 1057 help 1058 Add support for UART controller on timberdale. 1059 1060config SERIAL_BCM63XX 1061 tristate "Broadcom BCM63xx/BCM33xx UART support" 1062 select SERIAL_CORE 1063 depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST 1064 default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC 1065 help 1066 This enables the driver for the onchip UART core found on 1067 the following chipsets: 1068 1069 BCM33xx (cable modem) 1070 BCM63xx/BCM63xxx (DSL) 1071 BCM68xx (PON) 1072 BCM7xxx (STB) - DOCSIS console 1073 1074config SERIAL_BCM63XX_CONSOLE 1075 bool "Console on BCM63xx serial port" 1076 depends on SERIAL_BCM63XX=y 1077 select SERIAL_CORE_CONSOLE 1078 select SERIAL_EARLYCON 1079 help 1080 If you have enabled the serial port on the BCM63xx CPU 1081 you can make it the console by answering Y to this option. 1082 1083config SERIAL_GRLIB_GAISLER_APBUART 1084 tristate "GRLIB APBUART serial support" 1085 depends on OF && SPARC 1086 select SERIAL_CORE 1087 help 1088 Add support for the GRLIB APBUART serial port. 1089 1090config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE 1091 bool "Console on GRLIB APBUART serial port" 1092 depends on SERIAL_GRLIB_GAISLER_APBUART=y 1093 select SERIAL_CORE_CONSOLE 1094 help 1095 Support for running a console on the GRLIB APBUART 1096 1097config SERIAL_ALTERA_JTAGUART 1098 tristate "Altera JTAG UART support" 1099 select SERIAL_CORE 1100 help 1101 This driver supports the Altera JTAG UART port. 1102 1103config SERIAL_ALTERA_JTAGUART_CONSOLE 1104 bool "Altera JTAG UART console support" 1105 depends on SERIAL_ALTERA_JTAGUART=y 1106 select SERIAL_CORE_CONSOLE 1107 select SERIAL_EARLYCON 1108 help 1109 Enable a Altera JTAG UART port to be the system console. 1110 1111config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS 1112 bool "Bypass output when no connection" 1113 depends on SERIAL_ALTERA_JTAGUART_CONSOLE 1114 select SERIAL_CORE_CONSOLE 1115 help 1116 Bypass console output and keep going even if there is no 1117 JTAG terminal connection with the host. 1118 1119config SERIAL_ALTERA_UART 1120 tristate "Altera UART support" 1121 select SERIAL_CORE 1122 help 1123 This driver supports the Altera softcore UART port. 1124 1125config SERIAL_ALTERA_UART_MAXPORTS 1126 int "Maximum number of Altera UART ports" 1127 depends on SERIAL_ALTERA_UART 1128 default 4 1129 help 1130 This setting lets you define the maximum number of the Altera 1131 UART ports. The usual default varies from board to board, and 1132 this setting is a way of catering for that. 1133 1134config SERIAL_ALTERA_UART_BAUDRATE 1135 int "Default baudrate for Altera UART ports" 1136 depends on SERIAL_ALTERA_UART 1137 default 115200 1138 help 1139 This setting lets you define what the default baudrate is for the 1140 Altera UART ports. The usual default varies from board to board, 1141 and this setting is a way of catering for that. 1142 1143config SERIAL_ALTERA_UART_CONSOLE 1144 bool "Altera UART console support" 1145 depends on SERIAL_ALTERA_UART=y 1146 select SERIAL_CORE_CONSOLE 1147 select SERIAL_EARLYCON 1148 help 1149 Enable a Altera UART port to be the system console. 1150 1151config SERIAL_PCH_UART 1152 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART" 1153 depends on PCI && (X86_32 || MIPS || COMPILE_TEST) 1154 select SERIAL_CORE 1155 help 1156 This driver is for PCH(Platform controller Hub) UART of Intel EG20T 1157 which is an IOH(Input/Output Hub) for x86 embedded processor. 1158 Enabling PCH_DMA, this PCH UART works as DMA mode. 1159 1160 This driver also can be used for LAPIS Semiconductor IOH(Input/ 1161 Output Hub), ML7213, ML7223 and ML7831. 1162 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is 1163 for MP(Media Phone) use and ML7831 IOH is for general purpose use. 1164 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series. 1165 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH. 1166 1167config SERIAL_PCH_UART_CONSOLE 1168 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH" 1169 depends on SERIAL_PCH_UART=y 1170 select SERIAL_CORE_CONSOLE 1171 help 1172 Say Y here if you wish to use the PCH UART as the system console 1173 (the system console is the device which receives all kernel messages and 1174 warnings and which allows logins in single user mode). 1175 1176config SERIAL_MXS_AUART 1177 tristate "MXS AUART support" 1178 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST 1179 select SERIAL_CORE 1180 select SERIAL_MCTRL_GPIO if GPIOLIB 1181 help 1182 This driver supports the MXS and Alphascale ASM9260 Application 1183 UART (AUART) port. 1184 1185config SERIAL_MXS_AUART_CONSOLE 1186 bool "MXS AUART console support" 1187 depends on SERIAL_MXS_AUART=y 1188 select SERIAL_CORE_CONSOLE 1189 help 1190 Enable a MXS AUART port to be the system console. 1191 1192config SERIAL_XILINX_PS_UART 1193 tristate "Cadence (Xilinx Zynq) UART support" 1194 depends on OF 1195 select SERIAL_CORE 1196 help 1197 This driver supports the Cadence UART. It is found e.g. in Xilinx 1198 Zynq. 1199 1200config SERIAL_XILINX_PS_UART_CONSOLE 1201 bool "Cadence UART console support" 1202 depends on SERIAL_XILINX_PS_UART=y 1203 select SERIAL_CORE_CONSOLE 1204 select SERIAL_EARLYCON 1205 help 1206 Enable a Cadence UART port to be the system console. 1207 1208config SERIAL_AR933X 1209 tristate "AR933X serial port support" 1210 depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST) 1211 select SERIAL_CORE 1212 select SERIAL_MCTRL_GPIO if GPIOLIB 1213 help 1214 If you have an Atheros AR933X SOC based board and want to use the 1215 built-in UART of the SoC, say Y to this option. 1216 1217 To compile this driver as a module, choose M here: the 1218 module will be called ar933x_uart. 1219 1220config SERIAL_AR933X_CONSOLE 1221 bool "Console on AR933X serial port" 1222 depends on SERIAL_AR933X=y 1223 select SERIAL_CORE_CONSOLE 1224 help 1225 Enable a built-in UART port of the AR933X to be the system console. 1226 1227config SERIAL_AR933X_NR_UARTS 1228 int "Maximum number of AR933X serial ports" 1229 depends on SERIAL_AR933X 1230 default "2" 1231 help 1232 Set this to the number of serial ports you want the driver 1233 to support. 1234 1235config SERIAL_MPS2_UART_CONSOLE 1236 bool "MPS2 UART console support" 1237 depends on SERIAL_MPS2_UART 1238 select SERIAL_CORE_CONSOLE 1239 select SERIAL_EARLYCON 1240 1241config SERIAL_MPS2_UART 1242 bool "MPS2 UART port" 1243 depends on ARCH_MPS2 || COMPILE_TEST 1244 select SERIAL_CORE 1245 help 1246 This driver support the UART ports on ARM MPS2. 1247 1248config SERIAL_ARC 1249 tristate "ARC UART driver support" 1250 select SERIAL_CORE 1251 help 1252 Driver for on-chip UART for ARC(Synopsys) for the legacy 1253 FPGA Boards (ML50x/ARCAngel4) 1254 1255config SERIAL_ARC_CONSOLE 1256 bool "Console on ARC UART" 1257 depends on SERIAL_ARC=y 1258 select SERIAL_CORE_CONSOLE 1259 select SERIAL_EARLYCON 1260 help 1261 Enable system Console on ARC UART 1262 1263config SERIAL_ARC_NR_PORTS 1264 int "Number of ARC UART ports" 1265 depends on SERIAL_ARC 1266 range 1 3 1267 default "1" 1268 help 1269 Set this to the number of serial ports you want the driver 1270 to support. 1271 1272config SERIAL_RP2 1273 tristate "Comtrol RocketPort EXPRESS/INFINITY support" 1274 depends on PCI 1275 select SERIAL_CORE 1276 help 1277 This driver supports the Comtrol RocketPort EXPRESS and 1278 RocketPort INFINITY families of PCI/PCIe multiport serial adapters. 1279 These adapters use a "RocketPort 2" ASIC that is not compatible 1280 with the original RocketPort driver (CONFIG_ROCKETPORT). 1281 1282 To compile this driver as a module, choose M here: the 1283 module will be called rp2. 1284 1285 If you want to compile this driver into the kernel, say Y here. If 1286 you don't have a suitable RocketPort card installed, say N. 1287 1288config SERIAL_RP2_NR_UARTS 1289 int "Maximum number of RocketPort EXPRESS/INFINITY ports" 1290 depends on SERIAL_RP2 1291 default "32" 1292 help 1293 If multiple cards are present, the default limit of 32 ports may 1294 need to be increased. 1295 1296config SERIAL_FSL_LPUART 1297 tristate "Freescale lpuart serial port support" 1298 depends on HAS_DMA 1299 select SERIAL_CORE 1300 help 1301 Support for the on-chip lpuart on some Freescale SOCs. 1302 1303config SERIAL_FSL_LPUART_CONSOLE 1304 bool "Console on Freescale lpuart serial port" 1305 depends on SERIAL_FSL_LPUART=y 1306 select SERIAL_CORE_CONSOLE 1307 select SERIAL_EARLYCON 1308 help 1309 If you have enabled the lpuart serial port on the Freescale SoCs, 1310 you can make it the console by answering Y to this option. 1311 1312config SERIAL_FSL_LINFLEXUART 1313 tristate "Freescale LINFlexD UART serial port support" 1314 depends on PRINTK 1315 select SERIAL_CORE 1316 help 1317 Support for the on-chip LINFlexD UART on some Freescale SOCs. 1318 1319config SERIAL_FSL_LINFLEXUART_CONSOLE 1320 bool "Console on Freescale LINFlexD UART serial port" 1321 depends on SERIAL_FSL_LINFLEXUART=y 1322 select SERIAL_CORE_CONSOLE 1323 select SERIAL_EARLYCON 1324 help 1325 If you have enabled the LINFlexD UART serial port on the Freescale 1326 SoCs, you can make it the console by answering Y to this option. 1327 1328config SERIAL_CONEXANT_DIGICOLOR 1329 tristate "Conexant Digicolor CX92xxx USART serial port support" 1330 depends on OF 1331 select SERIAL_CORE 1332 help 1333 Support for the on-chip USART on Conexant Digicolor SoCs. 1334 1335config SERIAL_CONEXANT_DIGICOLOR_CONSOLE 1336 bool "Console on Conexant Digicolor serial port" 1337 depends on SERIAL_CONEXANT_DIGICOLOR=y 1338 select SERIAL_CORE_CONSOLE 1339 help 1340 If you have enabled the USART serial port on Conexant Digicolor 1341 SoCs, you can make it the console by answering Y to this option. 1342 1343config SERIAL_ST_ASC 1344 tristate "ST ASC serial port support" 1345 select SERIAL_CORE 1346 depends on ARM || COMPILE_TEST 1347 help 1348 This driver is for the on-chip Asynchronous Serial Controller on 1349 STMicroelectronics STi SoCs. 1350 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality. 1351 It support all industry standard baud rates. 1352 1353 If unsure, say N. 1354 1355config SERIAL_ST_ASC_CONSOLE 1356 bool "Support for console on ST ASC" 1357 depends on SERIAL_ST_ASC=y 1358 select SERIAL_CORE_CONSOLE 1359 1360config SERIAL_MEN_Z135 1361 tristate "MEN 16z135 Support" 1362 select SERIAL_CORE 1363 depends on MCB 1364 help 1365 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core 1366 on a MCB carrier. 1367 1368 This driver can also be build as a module. If so, the module will be called 1369 men_z135_uart.ko 1370 1371config SERIAL_SPRD 1372 tristate "Support for Spreadtrum serial" 1373 select SERIAL_CORE 1374 depends on COMMON_CLK 1375 help 1376 This enables the driver for the Spreadtrum's serial. 1377 1378config SERIAL_SPRD_CONSOLE 1379 bool "Spreadtrum UART console support" 1380 depends on SERIAL_SPRD=y 1381 select SERIAL_CORE_CONSOLE 1382 select SERIAL_EARLYCON 1383 help 1384 Support for early debug console using Spreadtrum's serial. This enables 1385 the console before standard serial driver is probed. This is enabled 1386 with "earlycon" on the kernel command line. The console is 1387 enabled when early_param is processed. 1388 1389config SERIAL_STM32 1390 tristate "STMicroelectronics STM32 serial port support" 1391 select SERIAL_CORE 1392 depends on ARCH_STM32 || COMPILE_TEST 1393 select SERIAL_MCTRL_GPIO if GPIOLIB 1394 help 1395 This driver is for the on-chip Serial Controller on 1396 STMicroelectronics STM32 MCUs. 1397 USART supports Rx & Tx functionality. 1398 It support all industry standard baud rates. 1399 1400 If unsure, say N. 1401 1402config SERIAL_STM32_CONSOLE 1403 bool "Support for console on STM32" 1404 depends on SERIAL_STM32=y 1405 select SERIAL_CORE_CONSOLE 1406 select SERIAL_EARLYCON 1407 1408config SERIAL_MVEBU_UART 1409 bool "Marvell EBU serial port support" 1410 depends on ARCH_MVEBU || COMPILE_TEST 1411 depends on COMMON_CLK 1412 select SERIAL_CORE 1413 help 1414 This driver is for Marvell EBU SoC's UART. If you have a machine 1415 based on the Armada-3700 SoC and wish to use the on-board serial 1416 port, 1417 say 'Y' here. 1418 Otherwise, say 'N'. 1419 1420config SERIAL_MVEBU_CONSOLE 1421 bool "Console on Marvell EBU serial port" 1422 depends on SERIAL_MVEBU_UART 1423 select SERIAL_CORE_CONSOLE 1424 select SERIAL_EARLYCON 1425 default y 1426 help 1427 Say 'Y' here if you wish to use Armada-3700 UART as the system console. 1428 (the system console is the device which receives all kernel messages 1429 and warnings and which allows logins in single user mode) 1430 Otherwise, say 'N'. 1431 1432config SERIAL_OWL 1433 tristate "Actions Semi Owl serial port support" 1434 depends on ARCH_ACTIONS || COMPILE_TEST 1435 select SERIAL_CORE 1436 help 1437 This driver is for Actions Semiconductor S500/S900 SoC's UART. 1438 Say 'Y' here if you wish to use the on-board serial port. 1439 Otherwise, say 'N'. 1440 1441config SERIAL_OWL_CONSOLE 1442 bool "Console on Actions Semi Owl serial port" 1443 depends on SERIAL_OWL=y 1444 select SERIAL_CORE_CONSOLE 1445 select SERIAL_EARLYCON 1446 default y 1447 help 1448 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART 1449 as the system console. 1450 1451config SERIAL_RDA 1452 bool "RDA Micro serial port support" 1453 depends on ARCH_RDA || COMPILE_TEST 1454 select SERIAL_CORE 1455 help 1456 This driver is for RDA8810PL SoC's UART. 1457 Say 'Y' here if you wish to use the on-board serial port. 1458 Otherwise, say 'N'. 1459 1460config SERIAL_RDA_CONSOLE 1461 bool "Console on RDA Micro serial port" 1462 depends on SERIAL_RDA=y 1463 select SERIAL_CORE_CONSOLE 1464 select SERIAL_EARLYCON 1465 default y 1466 help 1467 Say 'Y' here if you wish to use the RDA8810PL UART as the system 1468 console. Only earlycon is implemented currently. 1469 1470config SERIAL_MILBEAUT_USIO 1471 tristate "Milbeaut USIO/UART serial port support" 1472 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF) 1473 default ARCH_MILBEAUT 1474 select SERIAL_CORE 1475 help 1476 This selects the USIO/UART IP found in Socionext Milbeaut SoCs. 1477 1478config SERIAL_MILBEAUT_USIO_PORTS 1479 int "Maximum number of CSIO/UART ports (1-8)" 1480 range 1 8 1481 depends on SERIAL_MILBEAUT_USIO 1482 default "4" 1483 1484config SERIAL_MILBEAUT_USIO_CONSOLE 1485 bool "Support for console on MILBEAUT USIO/UART serial port" 1486 depends on SERIAL_MILBEAUT_USIO=y 1487 default y 1488 select SERIAL_CORE_CONSOLE 1489 select SERIAL_EARLYCON 1490 help 1491 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut 1492 SoCs as the system console (the system console is the device which 1493 receives all kernel messages and warnings and which allows logins in 1494 single user mode). 1495 1496config SERIAL_LITEUART 1497 tristate "LiteUART serial port support" 1498 depends on HAS_IOMEM 1499 depends on OF 1500 depends on LITEX || COMPILE_TEST 1501 select SERIAL_CORE 1502 help 1503 This driver is for the FPGA-based LiteUART serial controller from LiteX 1504 SoC builder. 1505 1506 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller. 1507 Otherwise, say 'N'. 1508 1509config SERIAL_LITEUART_MAX_PORTS 1510 int "Maximum number of LiteUART ports" 1511 depends on SERIAL_LITEUART 1512 default "1" 1513 help 1514 Set this to the maximum number of serial ports you want the driver 1515 to support. 1516 1517config SERIAL_LITEUART_CONSOLE 1518 bool "LiteUART serial port console support" 1519 depends on SERIAL_LITEUART=y 1520 select SERIAL_CORE_CONSOLE 1521 select SERIAL_EARLYCON 1522 help 1523 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial 1524 controller from LiteX SoC builder as the system console 1525 (the system console is the device which receives all kernel messages 1526 and warnings and which allows logins in single user mode). 1527 Otherwise, say 'N'. 1528 1529config SERIAL_SUNPLUS 1530 tristate "Sunplus UART support" 1531 depends on ARCH_SUNPLUS || COMPILE_TEST 1532 select SERIAL_CORE 1533 help 1534 Select this option if you would like to use Sunplus serial port on 1535 Sunplus SoC SP7021. 1536 If you enable this option, Sunplus serial ports in the system will 1537 be registered as ttySUPx. 1538 This driver can also be built as a module. If so, the module will be 1539 called sunplus-uart. 1540 1541config SERIAL_SUNPLUS_CONSOLE 1542 bool "Console on Sunplus UART" 1543 depends on SERIAL_SUNPLUS 1544 select SERIAL_CORE_CONSOLE 1545 select SERIAL_EARLYCON 1546 help 1547 Select this option if you would like to use a Sunplus UART as the 1548 system console. 1549 Even if you say Y here, the currently visible virtual console 1550 (/dev/tty0) will still be used as the system console by default, but 1551 you can alter that using a kernel command line option such as 1552 "console=ttySUPx". 1553 1554config SERIAL_NUVOTON_MA35D1 1555 tristate "Nuvoton MA35D1 family UART support" 1556 depends on ARCH_MA35 || COMPILE_TEST 1557 select SERIAL_CORE 1558 help 1559 This driver supports Nuvoton MA35D1 family UART ports. If you would 1560 like to use them, you must answer Y or M to this option. Note that 1561 for use as console, it must be included in kernel and not as a 1562 module. If you enable this option, Ma35D1 serial ports in the system 1563 will be registered as ttyNVTx. 1564 1565config SERIAL_NUVOTON_MA35D1_CONSOLE 1566 bool "Console on a Nuvotn MA35D1 family UART port" 1567 depends on SERIAL_NUVOTON_MA35D1=y 1568 select SERIAL_CORE_CONSOLE 1569 help 1570 Select this options if you'd like to use the UART port0 of the 1571 Nuvoton MA35D1 family as a console. 1572 Even if you say Y here, the currently visible virtual console 1573 (/dev/tty0) will still be used as the system console by default, 1574 but you can alter that using a kernel command line option such as 1575 "console=ttyNVTx". 1576 1577config SERIAL_ESP32 1578 tristate "Espressif ESP32 UART support" 1579 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF) 1580 select SERIAL_CORE 1581 select SERIAL_CORE_CONSOLE 1582 select SERIAL_EARLYCON 1583 help 1584 Driver for the UART controllers of the Espressif ESP32xx SoCs. 1585 When earlycon option is enabled the following kernel command line 1586 snippets may be used: 1587 earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000 1588 earlycon=esp32uart,mmio32,0x3ff40000,115200n8 1589 1590config SERIAL_ESP32_ACM 1591 tristate "Espressif ESP32 USB ACM gadget support" 1592 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF) 1593 select SERIAL_CORE 1594 select SERIAL_CORE_CONSOLE 1595 select SERIAL_EARLYCON 1596 help 1597 Driver for the CDC ACM gadget controller of the Espressif ESP32S3 1598 SoCs that share separate USB controller with the JTAG adapter. 1599 When earlycon option is enabled the following kernel command line 1600 snippet may be used: 1601 earlycon=esp32s3acm,mmio32,0x60038000 1602 1603endmenu 1604 1605config SERIAL_MCTRL_GPIO 1606 tristate 1607