drivers/tty/serial/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # Serial device configuration
   4 #
   5
   6 menu "Serial drivers"
   7         depends on HAS_IOMEM
   8
   9 config 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
  17 source "drivers/tty/serial/8250/Kconfig"
  18
  19 comment "Non-8250 serial port support"
  20
  21 config SERIAL_AMBA_PL010
  22         tristate "ARM AMBA PL010 serial port support"
  23         depends on ARM_AMBA
  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
  32 config 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
  48 config 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
  59 config 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
  76 config SERIAL_EARLYCON_ARM_SEMIHOST
  77         bool "Early console using ARM semihosting"
  78         depends on ARM64 || ARM
  79         select SERIAL_CORE
  80         select SERIAL_CORE_CONSOLE
  81         select SERIAL_EARLYCON
  82         help
  83           Support for early debug console using ARM semihosting. This enables
  84           the console before standard serial driver is probed. This is enabled
  85           with "earlycon=smh" on the kernel command line. The console is
  86           enabled when early_param is processed.
  87
  88 config SERIAL_EARLYCON_RISCV_SBI
  89         bool "Early console using RISC-V SBI"
  90         depends on RISCV_SBI_V01
  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
 100 config 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
 115 config 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
 128 config SERIAL_ATMEL
 129         bool "AT91 on-chip serial port support"
 130         depends on ARCH_AT91 || COMPILE_TEST
 131         select SERIAL_CORE
 132         select SERIAL_MCTRL_GPIO if GPIOLIB
 133         select MFD_AT91_USART
 134         help
 135           This enables the driver for the on-chip UARTs of the Atmel
 136           AT91 processors.
 137
 138 config SERIAL_ATMEL_CONSOLE
 139         bool "Support for console on AT91 serial port"
 140         depends on SERIAL_ATMEL=y
 141         select SERIAL_CORE_CONSOLE
 142         help
 143           Say Y here if you wish to use an on-chip UART on a Atmel
 144           AT91 processor as the system console (the system
 145           console is the device which receives all kernel messages and
 146           warnings and which allows logins in single user mode).
 147
 148 config SERIAL_ATMEL_PDC
 149         bool "Support DMA transfers on AT91 serial port"
 150         depends on SERIAL_ATMEL
 151         default y
 152         help
 153           Say Y here if you wish to use the PDC to do DMA transfers to
 154           and from the Atmel AT91 serial port. In order to
 155           actually use DMA transfers, make sure that the use_dma_tx
 156           and use_dma_rx members in the atmel_uart_data struct is set
 157           appropriately for each port.
 158
 159           Note that break and error handling currently doesn't work
 160           properly when DMA is enabled. Make sure that ports where
 161           this matters don't use DMA.
 162
 163 config SERIAL_ATMEL_TTYAT
 164         bool "Install as device ttyATn instead of ttySn"
 165         depends on SERIAL_ATMEL=y
 166         help
 167           Say Y here if you wish to have the internal AT91 UARTs
 168           appear as /dev/ttyATn (major 204, minor starting at 154)
 169           instead of the normal /dev/ttySn (major 4, minor starting at
 170           64). This is necessary if you also want other UARTs, such as
 171           external 8250/16C550 compatible UARTs.
 172           The ttySn nodes are legally reserved for the 8250 serial driver
 173           but are often misused by other serial drivers.
 174
 175           To use this, you should create suitable ttyATn device nodes in
 176           /dev/, and pass "console=ttyATn" to the kernel.
 177
 178           Say Y if you have an external 8250/16C550 UART.  If unsure, say N.
 179
 180 config SERIAL_KGDB_NMI
 181         bool "Serial console over KGDB NMI debugger port"
 182         depends on KGDB_SERIAL_CONSOLE
 183         help
 184           This special driver allows you to temporary use NMI debugger port
 185           as a normal console (assuming that the port is attached to KGDB).
 186
 187           Unlike KDB's disable_nmi command, with this driver you are always
 188           able to go back to the debugger using KGDB escape sequence ($3#33).
 189           This is because this console driver processes the input in NMI
 190           context, and thus is able to intercept the magic sequence.
 191
 192           Note that since the console interprets input and uses polling
 193           communication methods, for things like PPP you still must fully
 194           detach debugger port from the KGDB NMI (i.e. disable_nmi), and
 195           use raw console.
 196
 197           If unsure, say N.
 198
 199 config SERIAL_MESON
 200         tristate "Meson serial port support"
 201         depends on ARCH_MESON
 202         select SERIAL_CORE
 203         help
 204           This enables the driver for the on-chip UARTs of the Amlogic
 205           MesonX processors.
 206
 207 config SERIAL_MESON_CONSOLE
 208         bool "Support for console on meson"
 209         depends on SERIAL_MESON
 210         select SERIAL_CORE_CONSOLE
 211         select SERIAL_EARLYCON
 212         help
 213           Say Y here if you wish to use a Amlogic MesonX UART as the
 214           system console (the system console is the device which
 215           receives all kernel messages and warnings and which allows
 216           logins in single user mode) as /dev/ttyAMLx.
 217
 218 config SERIAL_CLPS711X
 219         tristate "CLPS711X serial port support"
 220         depends on ARCH_CLPS711X || COMPILE_TEST
 221         select SERIAL_CORE
 222         select SERIAL_MCTRL_GPIO if GPIOLIB
 223         help
 224           This enables the driver for the on-chip UARTs of the Cirrus
 225           Logic EP711x/EP721x/EP731x processors.
 226
 227 config SERIAL_CLPS711X_CONSOLE
 228         bool "Support for console on CLPS711X serial port"
 229         depends on SERIAL_CLPS711X=y
 230         select SERIAL_CORE_CONSOLE
 231         help
 232           Even if you say Y here, the currently visible virtual console
 233           (/dev/tty0) will still be used as the system console by default, but
 234           you can alter that using a kernel command line option such as
 235           "console=ttyCL1".
 236
 237 config SERIAL_SAMSUNG
 238         tristate "Samsung SoC serial support"
 239         depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
 240         select SERIAL_CORE
 241         help
 242           Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
 243           providing /dev/ttySAC0, 1 and 2 (note, some machines may not
 244           provide all of these ports, depending on how the serial port
 245           pins are configured.
 246
 247 config SERIAL_SAMSUNG_UARTS_4
 248         bool
 249         depends on SERIAL_SAMSUNG
 250         default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
 251         help
 252           Internal node for the common case of 4 Samsung compatible UARTs
 253
 254 config SERIAL_SAMSUNG_UARTS
 255         int
 256         depends on SERIAL_SAMSUNG
 257         default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
 258         default 3
 259         help
 260           Select the number of available UART ports for the Samsung S3C
 261           serial driver
 262
 263 config SERIAL_SAMSUNG_CONSOLE
 264         bool "Support for console on Samsung SoC serial port"
 265         depends on SERIAL_SAMSUNG=y
 266         select SERIAL_CORE_CONSOLE
 267         select SERIAL_EARLYCON
 268         help
 269           Allow selection of the S3C24XX on-board serial ports for use as
 270           an virtual console.
 271
 272           Even if you say Y here, the currently visible virtual console
 273           (/dev/tty0) will still be used as the system console by default, but
 274           you can alter that using a kernel command line option such as
 275           "console=ttySACx". (Try "man bootparam" or see the documentation of
 276           your boot loader about how to pass options to the kernel at
 277           boot time.)
 278
 279 config SERIAL_SIRFSOC
 280         tristate "SiRF SoC Platform Serial port support"
 281         depends on ARCH_SIRF
 282         select SERIAL_CORE
 283         help
 284           Support for the on-chip UART on the CSR SiRFprimaII series,
 285           providing /dev/ttySiRF0, 1 and 2 (note, some machines may not
 286           provide all of these ports, depending on how the serial port
 287           pins are configured).
 288
 289 config SERIAL_SIRFSOC_CONSOLE
 290         bool "Support for console on SiRF SoC serial port"
 291         depends on SERIAL_SIRFSOC=y
 292         select SERIAL_CORE_CONSOLE
 293         help
 294           Even if you say Y here, the currently visible virtual console
 295           (/dev/tty0) will still be used as the system console by default, but
 296           you can alter that using a kernel command line option such as
 297           "console=ttySiRFx". (Try "man bootparam" or see the documentation of
 298           your boot loader about how to pass options to the kernel at
 299           boot time.)
 300
 301 config SERIAL_TEGRA
 302         tristate "NVIDIA Tegra20/30 SoC serial controller"
 303         depends on ARCH_TEGRA && TEGRA20_APB_DMA
 304         select SERIAL_CORE
 305         help
 306           Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
 307           providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
 308           provide all of these ports, depending on how the serial port
 309           are enabled). This driver uses the APB DMA to achieve higher baudrate
 310           and better performance.
 311
 312 config SERIAL_TEGRA_TCU
 313         tristate "NVIDIA Tegra Combined UART"
 314         depends on ARCH_TEGRA && TEGRA_HSP_MBOX
 315         select SERIAL_CORE
 316         help
 317           Support for the mailbox-based TCU (Tegra Combined UART) serial port.
 318           TCU is a virtual serial port that allows multiplexing multiple data
 319           streams into a single hardware serial port.
 320
 321 config SERIAL_TEGRA_TCU_CONSOLE
 322         bool "Support for console on a Tegra TCU serial port"
 323         depends on SERIAL_TEGRA_TCU=y
 324         select SERIAL_CORE_CONSOLE
 325         default y
 326         help
 327           If you say Y here, it will be possible to use a the Tegra TCU as the
 328           system console (the system console is the device which receives all
 329           kernel messages and warnings and which allows logins in single user
 330           mode).
 331
 332           If unsure, say Y.
 333
 334 config SERIAL_MAX3100
 335         tristate "MAX3100 support"
 336         depends on SPI
 337         select SERIAL_CORE
 338         help
 339           MAX3100 chip support
 340
 341 config SERIAL_MAX310X
 342         tristate "MAX310X support"
 343         depends on SPI_MASTER
 344         select SERIAL_CORE
 345         select REGMAP_SPI if SPI_MASTER
 346         help
 347           This selects support for an advanced UART from Maxim (Dallas).
 348           Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
 349           Each IC contains 128 words each of receive and transmit FIFO
 350           that can be controlled through I2C or high-speed SPI.
 351
 352           Say Y here if you want to support this ICs.
 353
 354 config SERIAL_DZ
 355         bool "DECstation DZ serial driver"
 356         depends on MACH_DECSTATION && 32BIT
 357         select SERIAL_CORE
 358         default y
 359         help
 360           DZ11-family serial controllers for DECstations and VAXstations,
 361           including the DC7085, M7814, and M7819.
 362
 363 config SERIAL_DZ_CONSOLE
 364         bool "Support console on DECstation DZ serial driver"
 365         depends on SERIAL_DZ=y
 366         select SERIAL_CORE_CONSOLE
 367         default y
 368         help
 369           If you say Y here, it will be possible to use a serial port as the
 370           system console (the system console is the device which receives all
 371           kernel messages and warnings and which allows logins in single user
 372           mode).
 373
 374           Note that the firmware uses ttyS3 as the serial console on
 375           DECstations that use this driver.
 376
 377           If unsure, say Y.
 378
 379 config SERIAL_ZS
 380         tristate "DECstation Z85C30 serial support"
 381         depends on MACH_DECSTATION
 382         select SERIAL_CORE
 383         default y
 384         help
 385           Support for the Zilog 85C350 serial communications controller used
 386           for serial ports in newer DECstation systems.  These include the
 387           DECsystem 5900 and all models of the DECstation and DECsystem 5000
 388           systems except from model 200.
 389
 390           If unsure, say Y.  To compile this driver as a module, choose M here:
 391           the module will be called zs.
 392
 393 config SERIAL_ZS_CONSOLE
 394         bool "Support for console on a DECstation Z85C30 serial port"
 395         depends on SERIAL_ZS=y
 396         select SERIAL_CORE_CONSOLE
 397         default y
 398         help
 399           If you say Y here, it will be possible to use a serial port as the
 400           system console (the system console is the device which receives all
 401           kernel messages and warnings and which allows logins in single user
 402           mode).
 403
 404           Note that the firmware uses ttyS1 as the serial console on the
 405           Maxine and ttyS3 on the others using this driver.
 406
 407           If unsure, say Y.
 408
 409 config SERIAL_21285
 410         tristate "DC21285 serial port support"
 411         depends on FOOTBRIDGE
 412         select SERIAL_CORE
 413         help
 414           If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
 415           PCI bridge you can enable its onboard serial port by enabling this
 416           option.
 417
 418 config SERIAL_21285_CONSOLE
 419         bool "Console on DC21285 serial port"
 420         depends on SERIAL_21285=y
 421         select SERIAL_CORE_CONSOLE
 422         help
 423           If you have enabled the serial port on the 21285 footbridge you can
 424           make it the console by answering Y to this option.
 425
 426           Even if you say Y here, the currently visible virtual console
 427           (/dev/tty0) will still be used as the system console by default, but
 428           you can alter that using a kernel command line option such as
 429           "console=ttyFB". (Try "man bootparam" or see the documentation of
 430           your boot loader (lilo or loadlin) about how to pass options to the
 431           kernel at boot time.)
 432
 433 config SERIAL_PXA
 434         bool "PXA serial port support (DEPRECATED)"
 435         depends on ARCH_PXA || ARCH_MMP
 436         select SERIAL_CORE
 437         select SERIAL_8250_PXA if SERIAL_8250=y
 438         select SERIAL_PXA_NON8250 if !SERIAL_8250=y
 439         help
 440           If you have a machine based on an Intel XScale PXA2xx CPU you
 441           can enable its onboard serial ports by enabling this option.
 442
 443           Unless you have a specific need, you should use SERIAL_8250_PXA
 444           instead of this.
 445
 446 config SERIAL_PXA_NON8250
 447         bool
 448         depends on !SERIAL_8250
 449
 450 config SERIAL_PXA_CONSOLE
 451         bool "Console on PXA serial port (DEPRECATED)"
 452         depends on SERIAL_PXA
 453         select SERIAL_CORE_CONSOLE
 454         select SERIAL_8250_CONSOLE if SERIAL_8250=y
 455         help
 456           If you have enabled the serial port on the Intel XScale PXA
 457           CPU you can make it the console by answering Y to this option.
 458
 459           Even if you say Y here, the currently visible virtual console
 460           (/dev/tty0) will still be used as the system console by default, but
 461           you can alter that using a kernel command line option such as
 462           "console=ttySA0". (Try "man bootparam" or see the documentation of
 463           your boot loader (lilo or loadlin) about how to pass options to the
 464           kernel at boot time.)
 465
 466           Unless you have a specific need, you should use SERIAL_8250_PXA
 467           and SERIAL_8250_CONSOLE instead of this.
 468
 469 config SERIAL_SA1100
 470         bool "SA1100 serial port support"
 471         depends on ARCH_SA1100
 472         select SERIAL_CORE
 473         select SERIAL_MCTRL_GPIO if GPIOLIB
 474         help
 475           If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
 476           can enable its onboard serial port by enabling this option.
 477           Please read <file:Documentation/arm/sa1100/serial_uart.rst> for further
 478           info.
 479
 480 config SERIAL_SA1100_CONSOLE
 481         bool "Console on SA1100 serial port"
 482         depends on SERIAL_SA1100
 483         select SERIAL_CORE_CONSOLE
 484         help
 485           If you have enabled the serial port on the SA1100/SA1110 StrongARM
 486           CPU you can make it the console by answering Y to this option.
 487
 488           Even if you say Y here, the currently visible virtual console
 489           (/dev/tty0) will still be used as the system console by default, but
 490           you can alter that using a kernel command line option such as
 491           "console=ttySA0". (Try "man bootparam" or see the documentation of
 492           your boot loader (lilo or loadlin) about how to pass options to the
 493           kernel at boot time.)
 494
 495 config SERIAL_IMX
 496         tristate "IMX serial port support"
 497         depends on ARCH_MXC || COMPILE_TEST
 498         select SERIAL_CORE
 499         select RATIONAL
 500         select SERIAL_MCTRL_GPIO if GPIOLIB
 501         help
 502           If you have a machine based on a Motorola IMX CPU you
 503           can enable its onboard serial port by enabling this option.
 504
 505 config SERIAL_IMX_CONSOLE
 506         tristate "Console on IMX serial port"
 507         depends on SERIAL_IMX
 508         select SERIAL_CORE_CONSOLE
 509         help
 510           If you have enabled the serial port on the Freescale IMX
 511           CPU you can make it the console by answering Y/M to this option.
 512
 513           Even if you say Y/M here, the currently visible virtual console
 514           (/dev/tty0) will still be used as the system console by default, but
 515           you can alter that using a kernel command line option such as
 516           "console=ttymxc0". (Try "man bootparam" or see the documentation of
 517           your bootloader about how to pass options to the kernel at boot time.)
 518
 519 config SERIAL_IMX_EARLYCON
 520         bool "Earlycon on IMX serial port"
 521         depends on ARCH_MXC || COMPILE_TEST
 522         depends on OF
 523         select SERIAL_EARLYCON
 524         select SERIAL_CORE_CONSOLE
 525         default y if SERIAL_IMX_CONSOLE
 526         help
 527           If you have enabled the earlycon on the Freescale IMX
 528           CPU you can make it the earlycon by answering Y to this option.
 529
 530 config SERIAL_UARTLITE
 531         tristate "Xilinx uartlite serial port support"
 532         depends on HAS_IOMEM
 533         select SERIAL_CORE
 534         help
 535           Say Y here if you want to use the Xilinx uartlite serial controller.
 536
 537           To compile this driver as a module, choose M here: the
 538           module will be called uartlite.
 539
 540 config SERIAL_UARTLITE_CONSOLE
 541         bool "Support for console on Xilinx uartlite serial port"
 542         depends on SERIAL_UARTLITE=y
 543         select SERIAL_CORE_CONSOLE
 544         select SERIAL_EARLYCON
 545         help
 546           Say Y here if you wish to use a Xilinx uartlite as the system
 547           console (the system console is the device which receives all kernel
 548           messages and warnings and which allows logins in single user mode).
 549
 550 config SERIAL_UARTLITE_NR_UARTS
 551         int "Maximum number of uartlite serial ports"
 552         depends on SERIAL_UARTLITE
 553         range 1 256
 554         default 1
 555         help
 556           Set this to the number of uartlites in your system, or the number
 557           you think you might implement.
 558
 559 config SERIAL_SUNCORE
 560         bool
 561         depends on SPARC
 562         select SERIAL_CORE
 563         select SERIAL_CORE_CONSOLE
 564         default y
 565
 566 config SERIAL_SUNZILOG
 567         tristate "Sun Zilog8530 serial support"
 568         depends on SPARC
 569         help
 570           This driver supports the Zilog8530 serial ports found on many Sparc
 571           systems.  Say Y or M if you want to be able to these serial ports.
 572
 573 config SERIAL_SUNZILOG_CONSOLE
 574         bool "Console on Sun Zilog8530 serial port"
 575         depends on SERIAL_SUNZILOG=y
 576         help
 577           If you would like to be able to use the Zilog8530 serial port
 578           on your Sparc system as the console, you can do so by answering
 579           Y to this option.
 580
 581 config SERIAL_SUNSU
 582         tristate "Sun SU serial support"
 583         depends on SPARC && PCI
 584         help
 585           This driver supports the 8250 serial ports that run the keyboard and
 586           mouse on (PCI) UltraSPARC systems.  Say Y or M if you want to be able
 587           to these serial ports.
 588
 589 config SERIAL_SUNSU_CONSOLE
 590         bool "Console on Sun SU serial port"
 591         depends on SERIAL_SUNSU=y
 592         help
 593           If you would like to be able to use the SU serial port
 594           on your Sparc system as the console, you can do so by answering
 595           Y to this option.
 596
 597 config SERIAL_MUX
 598         tristate "Serial MUX support"
 599         depends on GSC
 600         select SERIAL_CORE
 601         default y
 602         help
 603           Saying Y here will enable the hardware MUX serial driver for
 604           the Nova, K class systems and D class with a 'remote control card'.
 605           The hardware MUX is not 8250/16550 compatible therefore the
 606           /dev/ttyB0 device is shared between the Serial MUX and the PDC
 607           software console. The following steps need to be completed to use
 608           the Serial MUX:
 609
 610             1. create the device entry (mknod /dev/ttyB0 c 11 0)
 611             2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
 612             3. Add device ttyB0 to /etc/securetty (if you want to log on as
 613                  root on this console.)
 614             4. Change the kernel command console parameter to: console=ttyB0
 615
 616 config SERIAL_MUX_CONSOLE
 617         bool "Support for console on serial MUX"
 618         depends on SERIAL_MUX=y
 619         select SERIAL_CORE_CONSOLE
 620         default y
 621
 622 config PDC_CONSOLE
 623         bool "PDC software console support"
 624         depends on PARISC && !SERIAL_MUX && VT
 625         help
 626           Saying Y here will enable the software based PDC console to be
 627           used as the system console.  This is useful for machines in
 628           which the hardware based console has not been written yet.  The
 629           following steps must be completed to use the PDC console:
 630
 631             1. create the device entry (mknod /dev/ttyB0 c 11 0)
 632             2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
 633             3. Add device ttyB0 to /etc/securetty (if you want to log on as
 634                  root on this console.)
 635             4. Change the kernel command console parameter to: console=ttyB0
 636
 637 config SERIAL_SUNSAB
 638         tristate "Sun Siemens SAB82532 serial support"
 639         depends on SPARC && PCI
 640         help
 641           This driver supports the Siemens SAB82532 DUSCC serial ports on newer
 642           (PCI) UltraSPARC systems.  Say Y or M if you want to be able to these
 643           serial ports.
 644
 645 config SERIAL_SUNSAB_CONSOLE
 646         bool "Console on Sun Siemens SAB82532 serial port"
 647         depends on SERIAL_SUNSAB=y
 648         help
 649           If you would like to be able to use the SAB82532 serial port
 650           on your Sparc system as the console, you can do so by answering
 651           Y to this option.
 652
 653 config SERIAL_SUNHV
 654         bool "Sun4v Hypervisor Console support"
 655         depends on SPARC64
 656         help
 657           This driver supports the console device found on SUN4V Sparc
 658           systems.  Say Y if you want to be able to use this device.
 659
 660 config SERIAL_IP22_ZILOG
 661         tristate "SGI Zilog8530 serial support"
 662         depends on SGI_HAS_ZILOG
 663         select SERIAL_CORE
 664         help
 665           This driver supports the Zilog8530 serial ports found on SGI
 666           systems.  Say Y or M if you want to be able to these serial ports.
 667
 668 config SERIAL_IP22_ZILOG_CONSOLE
 669         bool "Console on SGI Zilog8530 serial port"
 670         depends on SERIAL_IP22_ZILOG=y
 671         select SERIAL_CORE_CONSOLE
 672
 673 config SERIAL_SH_SCI
 674         tristate "SuperH SCI(F) serial port support"
 675         depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
 676         select SERIAL_CORE
 677         select SERIAL_MCTRL_GPIO if GPIOLIB
 678
 679 config SERIAL_SH_SCI_NR_UARTS
 680         int "Maximum number of SCI(F) serial ports" if EXPERT
 681         range 1 64 if 64BIT
 682         range 1 32 if !64BIT
 683         depends on SERIAL_SH_SCI
 684         default "3" if H8300
 685         default "10" if SUPERH
 686         default "18" if ARCH_RENESAS
 687         default "2"
 688
 689 config SERIAL_SH_SCI_CONSOLE
 690         bool "Support for console on SuperH SCI(F)" if EXPERT
 691         depends on SERIAL_SH_SCI=y
 692         select SERIAL_CORE_CONSOLE
 693         default y
 694
 695 config SERIAL_SH_SCI_EARLYCON
 696         bool "Support for early console on SuperH SCI(F)" if EXPERT
 697         depends on SERIAL_SH_SCI=y
 698         select SERIAL_CORE_CONSOLE
 699         select SERIAL_EARLYCON
 700         default ARCH_RENESAS || H8300
 701
 702 config SERIAL_SH_SCI_DMA
 703         bool "DMA support" if EXPERT
 704         depends on SERIAL_SH_SCI && DMA_ENGINE
 705         default ARCH_RENESAS
 706
 707 config SERIAL_HS_LPC32XX
 708         tristate "LPC32XX high speed serial port support"
 709         depends on ARCH_LPC32XX || COMPILE_TEST
 710         depends on OF
 711         select SERIAL_CORE
 712         help
 713           Support for the LPC32XX high speed serial ports (up to 900kbps).
 714           Those are UARTs completely different from the Standard UARTs on the
 715           LPC32XX SoC.
 716           Choose M or Y here to build this driver.
 717
 718 config SERIAL_HS_LPC32XX_CONSOLE
 719         bool "Enable LPC32XX high speed UART serial console"
 720         depends on SERIAL_HS_LPC32XX=y
 721         select SERIAL_CORE_CONSOLE
 722         help
 723           If you would like to be able to use one of the high speed serial
 724           ports on the LPC32XX as the console, you can do so by answering
 725           Y to this option.
 726
 727 config SERIAL_CORE
 728         tristate
 729
 730 config SERIAL_CORE_CONSOLE
 731         bool
 732
 733 config CONSOLE_POLL
 734         bool
 735
 736 config SERIAL_MCF
 737         bool "Coldfire serial support"
 738         depends on COLDFIRE
 739         select SERIAL_CORE
 740         help
 741           This serial driver supports the Freescale Coldfire serial ports.
 742
 743 config SERIAL_MCF_BAUDRATE
 744         int "Default baudrate for Coldfire serial ports"
 745         depends on SERIAL_MCF
 746         default 19200
 747         help
 748           This setting lets you define what the default baudrate is for the
 749           ColdFire serial ports. The usual default varies from board to board,
 750           and this setting is a way of catering for that.
 751
 752 config SERIAL_MCF_CONSOLE
 753         bool "Coldfire serial console support"
 754         depends on SERIAL_MCF
 755         select SERIAL_CORE_CONSOLE
 756         help
 757           Enable a ColdFire internal serial port to be the system console.
 758
 759 config SERIAL_PMACZILOG
 760         tristate "Mac or PowerMac z85c30 ESCC support"
 761         depends on (M68K && MAC) || PPC_PMAC
 762         select SERIAL_CORE
 763         help
 764           This driver supports the Zilog z85C30 serial ports found on
 765           (Power)Mac machines.
 766           Say Y or M if you want to be able to these serial ports.
 767
 768 config SERIAL_PMACZILOG_TTYS
 769         bool "Use ttySn device nodes for Zilog z85c30"
 770         depends on SERIAL_PMACZILOG
 771         help
 772           The pmac_zilog driver for the z85C30 chip on many powermacs
 773           historically used the device numbers for /dev/ttySn.  The
 774           8250 serial port driver also uses these numbers, which means
 775           the two drivers being unable to coexist; you could not use
 776           both z85C30 and 8250 type ports at the same time.
 777
 778           If this option is not selected, the pmac_zilog driver will
 779           use the device numbers allocated for /dev/ttyPZn.  This allows
 780           the pmac_zilog and 8250 drivers to co-exist, but may cause
 781           existing userspace setups to break.  Programs that need to
 782           access the built-in serial ports on powermacs will need to
 783           be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
 784
 785           If you enable this option, any z85c30 ports in the system will
 786           be registered as ttyS0 onwards as in the past, and you will be
 787           unable to use the 8250 module for PCMCIA or other 16C550-style
 788           UARTs.
 789
 790           Say N unless you need the z85c30 ports on your (Power)Mac
 791           to appear as /dev/ttySn.
 792
 793 config SERIAL_PMACZILOG_CONSOLE
 794         bool "Console on Mac or PowerMac z85c30 serial port"
 795         depends on SERIAL_PMACZILOG=y
 796         select SERIAL_CORE_CONSOLE
 797         help
 798           If you would like to be able to use the z85c30 serial port
 799           on your (Power)Mac as the console, you can do so by answering
 800           Y to this option.
 801
 802 config SERIAL_CPM
 803         tristate "CPM SCC/SMC serial port support"
 804         depends on CPM2 || CPM1
 805         select SERIAL_CORE
 806         help
 807           This driver supports the SCC and SMC serial ports on Motorola
 808           embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
 809
 810 config SERIAL_CPM_CONSOLE
 811         bool "Support for console on CPM SCC/SMC serial port"
 812         depends on SERIAL_CPM=y
 813         select SERIAL_CORE_CONSOLE
 814         help
 815           Say Y here if you wish to use a SCC or SMC CPM UART as the system
 816           console (the system console is the device which receives all kernel
 817           messages and warnings and which allows logins in single user mode).
 818
 819           Even if you say Y here, the currently visible framebuffer console
 820           (/dev/tty0) will still be used as the system console by default, but
 821           you can alter that using a kernel command line option such as
 822           "console=ttyCPM0". (Try "man bootparam" or see the documentation of
 823           your boot loader (lilo or loadlin) about how to pass options to the
 824           kernel at boot time.)
 825
 826 config SERIAL_PIC32
 827         tristate "Microchip PIC32 serial support"
 828         depends on MACH_PIC32
 829         select SERIAL_CORE
 830         help
 831           If you have a PIC32, this driver supports the serial ports.
 832
 833           Say Y or M to use PIC32 serial ports, otherwise say N. Note that
 834           to use a serial port as a console, this must be included in kernel and
 835           not as a module.
 836
 837 config SERIAL_PIC32_CONSOLE
 838         bool "PIC32 serial console support"
 839         depends on SERIAL_PIC32
 840         select SERIAL_CORE_CONSOLE
 841         help
 842           If you have a PIC32, this driver supports the putting a console on one
 843           of the serial ports.
 844
 845           Say Y to use the PIC32 console, otherwise say N.
 846
 847 config SERIAL_MPC52xx
 848         tristate "Freescale MPC52xx/MPC512x family PSC serial support"
 849         depends on PPC_MPC52xx || PPC_MPC512x
 850         select SERIAL_CORE
 851         help
 852           This driver supports MPC52xx and MPC512x PSC serial ports. If you would
 853           like to use them, you must answer Y or M to this option. Note that
 854           for use as console, it must be included in kernel and not as a
 855           module.
 856
 857 config SERIAL_MPC52xx_CONSOLE
 858         bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
 859         depends on SERIAL_MPC52xx=y
 860         select SERIAL_CORE_CONSOLE
 861         help
 862           Select this options if you'd like to use one of the PSC serial port
 863           of the Freescale MPC52xx family as a console.
 864
 865 config SERIAL_MPC52xx_CONSOLE_BAUD
 866         int "Freescale MPC52xx/MPC512x family PSC serial port baud"
 867         depends on SERIAL_MPC52xx_CONSOLE=y
 868         default "9600"
 869         help
 870           Select the MPC52xx console baud rate.
 871           This value is only used if the bootloader doesn't pass in the
 872           console baudrate
 873
 874 config SERIAL_ICOM
 875         tristate "IBM Multiport Serial Adapter"
 876         depends on PCI && PPC_PSERIES
 877         select SERIAL_CORE
 878         select FW_LOADER
 879         help
 880           This driver is for a family of multiport serial adapters
 881           including 2 port RVX, 2 port internal modem, 4 port internal
 882           modem and a split 1 port RVX and 1 port internal modem.
 883
 884           This driver can also be built as a module.  If so, the module
 885           will be called icom.
 886
 887 config SERIAL_TXX9
 888         bool "TMPTX39XX/49XX SIO support"
 889         depends on HAS_TXX9_SERIAL
 890         select SERIAL_CORE
 891         default y
 892
 893 config HAS_TXX9_SERIAL
 894         bool
 895
 896 config SERIAL_TXX9_NR_UARTS
 897         int "Maximum number of TMPTX39XX/49XX SIO ports"
 898         depends on SERIAL_TXX9
 899         default "6"
 900
 901 config SERIAL_TXX9_CONSOLE
 902         bool "TMPTX39XX/49XX SIO Console support"
 903         depends on SERIAL_TXX9=y
 904         select SERIAL_CORE_CONSOLE
 905
 906 config SERIAL_TXX9_STDSERIAL
 907         bool "TX39XX/49XX SIO act as standard serial"
 908         depends on !SERIAL_8250 && SERIAL_TXX9
 909
 910 config SERIAL_VR41XX
 911         tristate "NEC VR4100 series Serial Interface Unit support"
 912         depends on CPU_VR41XX
 913         select SERIAL_CORE
 914         help
 915           If you have a NEC VR4100 series processor and you want to use
 916           Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
 917           (not include VR4111/VR4121 DSIU), say Y.  Otherwise, say N.
 918
 919 config SERIAL_VR41XX_CONSOLE
 920         bool "Enable NEC VR4100 series Serial Interface Unit console"
 921         depends on SERIAL_VR41XX=y
 922         select SERIAL_CORE_CONSOLE
 923         help
 924           If you have a NEC VR4100 series processor and you want to use
 925           a console on a serial port, say Y.  Otherwise, say N.
 926
 927 config SERIAL_JSM
 928         tristate "Digi International NEO and Classic PCI Support"
 929         depends on PCI
 930         select SERIAL_CORE
 931         help
 932           This is a driver for Digi International's Neo and Classic series
 933           of cards which provide multiple serial ports. You would need
 934           something like this to connect more than two modems to your Linux
 935           box, for instance in order to become a dial-in server. This driver
 936           supports PCI boards only.
 937
 938           If you have a card like this, say Y here, otherwise say N.
 939
 940           To compile this driver as a module, choose M here: the
 941           module will be called jsm.
 942
 943 config SERIAL_MSM
 944         tristate "MSM on-chip serial port support"
 945         depends on ARCH_QCOM
 946         select SERIAL_CORE
 947
 948 config SERIAL_MSM_CONSOLE
 949         bool "MSM serial console support"
 950         depends on SERIAL_MSM=y
 951         select SERIAL_CORE_CONSOLE
 952         select SERIAL_EARLYCON
 953
 954 config SERIAL_QCOM_GENI
 955         tristate "QCOM on-chip GENI based serial port support"
 956         depends on ARCH_QCOM || COMPILE_TEST
 957         depends on QCOM_GENI_SE
 958         select SERIAL_CORE
 959
 960 config SERIAL_QCOM_GENI_CONSOLE
 961         bool "QCOM GENI Serial Console support"
 962         depends on SERIAL_QCOM_GENI
 963         select SERIAL_CORE_CONSOLE
 964         select SERIAL_EARLYCON
 965         help
 966           Serial console driver for Qualcomm Technologies Inc's GENI based
 967           QUP hardware.
 968
 969 config SERIAL_VT8500
 970         bool "VIA VT8500 on-chip serial port support"
 971         depends on ARCH_VT8500
 972         select SERIAL_CORE
 973
 974 config SERIAL_VT8500_CONSOLE
 975         bool "VIA VT8500 serial console support"
 976         depends on SERIAL_VT8500=y
 977         select SERIAL_CORE_CONSOLE
 978
 979 config SERIAL_OMAP
 980         tristate "OMAP serial port support"
 981         depends on ARCH_OMAP2PLUS
 982         select SERIAL_CORE
 983         help
 984           If you have a machine based on an Texas Instruments OMAP CPU you
 985           can enable its onboard serial ports by enabling this option.
 986
 987           By enabling this option you take advantage of dma feature available
 988           with the omap-serial driver. DMA support can be enabled from platform
 989           data.
 990
 991 config SERIAL_OMAP_CONSOLE
 992         bool "Console on OMAP serial port"
 993         depends on SERIAL_OMAP=y
 994         select SERIAL_CORE_CONSOLE
 995         help
 996           Select this option if you would like to use omap serial port as
 997           console.
 998
 999           Even if you say Y here, the currently visible virtual console
1000           (/dev/tty0) will still be used as the system console by default, but
1001           you can alter that using a kernel command line option such as
1002           "console=ttyOx". (Try "man bootparam" or see the documentation of
1003           your boot loader about how to pass options to the kernel at
1004           boot time.)
1005
1006 config SERIAL_SIFIVE
1007         tristate "SiFive UART support"
1008         depends on OF
1009         select SERIAL_CORE
1010         help
1011           Select this option if you are building a kernel for a device that
1012           contains a SiFive UART IP block.  This type of UART is present on
1013           SiFive FU540 SoCs, among others.
1014
1015 config SERIAL_SIFIVE_CONSOLE
1016         bool "Console on SiFive UART"
1017         depends on SERIAL_SIFIVE=y
1018         select SERIAL_CORE_CONSOLE
1019         select SERIAL_EARLYCON
1020         help
1021           Select this option if you would like to use a SiFive UART as the
1022           system console.
1023
1024           Even if you say Y here, the currently visible virtual console
1025           (/dev/tty0) will still be used as the system console by default, but
1026           you can alter that using a kernel command line option such as
1027           "console=ttySIFx". (Try "man bootparam" or see the documentation of
1028           your boot loader about how to pass options to the kernel at
1029           boot time.)
1030
1031 config SERIAL_LANTIQ
1032         tristate "Lantiq serial driver"
1033         depends on (LANTIQ || X86) || COMPILE_TEST
1034         select SERIAL_CORE
1035         help
1036           Support for UART on Lantiq and Intel SoCs.
1037           To compile this driver as a module, select M here. The
1038           module will be called lantiq.
1039
1040 config SERIAL_LANTIQ_CONSOLE
1041         bool "Console on Lantiq UART"
1042         depends on SERIAL_LANTIQ=y
1043         select SERIAL_CORE_CONSOLE
1044         select SERIAL_EARLYCON
1045         help
1046           Select this option if you would like to use a Lantiq UART as the
1047           system console.
1048
1049 config SERIAL_QE
1050         tristate "Freescale QUICC Engine serial port support"
1051         depends on QUICC_ENGINE
1052         select SERIAL_CORE
1053         select FW_LOADER
1054         help
1055           This driver supports the QE serial ports on Freescale embedded
1056           PowerPC that contain a QUICC Engine.
1057
1058 config SERIAL_SCCNXP
1059         tristate "SCCNXP serial port support"
1060         select SERIAL_CORE
1061         help
1062           This selects support for an advanced UART from NXP (Philips).
1063           Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1064           SC28L202, SCC68681 and SCC68692.
1065
1066 config SERIAL_SCCNXP_CONSOLE
1067         bool "Console on SCCNXP serial port"
1068         depends on SERIAL_SCCNXP=y
1069         select SERIAL_CORE_CONSOLE
1070         help
1071           Support for console on SCCNXP serial ports.
1072
1073 config SERIAL_SC16IS7XX_CORE
1074         tristate
1075
1076 config SERIAL_SC16IS7XX
1077         tristate "SC16IS7xx serial support"
1078         select SERIAL_CORE
1079         depends on (SPI_MASTER && !I2C) || I2C
1080         help
1081           This selects support for SC16IS7xx serial ports.
1082           Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1083           SC16IS760 and SC16IS762. Select supported buses using options below.
1084
1085 config SERIAL_SC16IS7XX_I2C
1086         bool "SC16IS7xx for I2C interface"
1087         depends on SERIAL_SC16IS7XX
1088         depends on I2C
1089         select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1090         select REGMAP_I2C if I2C
1091         default y
1092         help
1093           Enable SC16IS7xx driver on I2C bus,
1094           If required say y, and say n to i2c if not required,
1095           Enabled by default to support oldconfig.
1096           You must select at least one bus for the driver to be built.
1097
1098 config SERIAL_SC16IS7XX_SPI
1099         bool "SC16IS7xx for spi interface"
1100         depends on SERIAL_SC16IS7XX
1101         depends on SPI_MASTER
1102         select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1103         select REGMAP_SPI if SPI_MASTER
1104         help
1105           Enable SC16IS7xx driver on SPI bus,
1106           If required say y, and say n to spi if not required,
1107           This is additional support to existing driver.
1108           You must select at least one bus for the driver to be built.
1109
1110 config SERIAL_TIMBERDALE
1111         tristate "Support for timberdale UART"
1112         select SERIAL_CORE
1113         depends on X86_32 || COMPILE_TEST
1114         help
1115         Add support for UART controller on timberdale.
1116
1117 config SERIAL_BCM63XX
1118         tristate "Broadcom BCM63xx/BCM33xx UART support"
1119         select SERIAL_CORE
1120         depends on COMMON_CLK
1121         help
1122           This enables the driver for the onchip UART core found on
1123           the following chipsets:
1124
1125             BCM33xx (cable modem)
1126             BCM63xx/BCM63xxx (DSL)
1127             BCM68xx (PON)
1128             BCM7xxx (STB) - DOCSIS console
1129
1130 config SERIAL_BCM63XX_CONSOLE
1131         bool "Console on BCM63xx serial port"
1132         depends on SERIAL_BCM63XX=y
1133         select SERIAL_CORE_CONSOLE
1134         select SERIAL_EARLYCON
1135         help
1136           If you have enabled the serial port on the BCM63xx CPU
1137           you can make it the console by answering Y to this option.
1138
1139 config SERIAL_GRLIB_GAISLER_APBUART
1140         tristate "GRLIB APBUART serial support"
1141         depends on OF && SPARC
1142         select SERIAL_CORE
1143         help
1144         Add support for the GRLIB APBUART serial port.
1145
1146 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1147         bool "Console on GRLIB APBUART serial port"
1148         depends on SERIAL_GRLIB_GAISLER_APBUART=y
1149         select SERIAL_CORE_CONSOLE
1150         help
1151         Support for running a console on the GRLIB APBUART
1152
1153 config SERIAL_ALTERA_JTAGUART
1154         tristate "Altera JTAG UART support"
1155         select SERIAL_CORE
1156         help
1157           This driver supports the Altera JTAG UART port.
1158
1159 config SERIAL_ALTERA_JTAGUART_CONSOLE
1160         bool "Altera JTAG UART console support"
1161         depends on SERIAL_ALTERA_JTAGUART=y
1162         select SERIAL_CORE_CONSOLE
1163         select SERIAL_EARLYCON
1164         help
1165           Enable a Altera JTAG UART port to be the system console.
1166
1167 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1168         bool "Bypass output when no connection"
1169         depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1170         select SERIAL_CORE_CONSOLE
1171         help
1172           Bypass console output and keep going even if there is no
1173           JTAG terminal connection with the host.
1174
1175 config SERIAL_ALTERA_UART
1176         tristate "Altera UART support"
1177         select SERIAL_CORE
1178         help
1179           This driver supports the Altera softcore UART port.
1180
1181 config SERIAL_ALTERA_UART_MAXPORTS
1182         int "Maximum number of Altera UART ports"
1183         depends on SERIAL_ALTERA_UART
1184         default 4
1185         help
1186           This setting lets you define the maximum number of the Altera
1187           UART ports. The usual default varies from board to board, and
1188           this setting is a way of catering for that.
1189
1190 config SERIAL_ALTERA_UART_BAUDRATE
1191         int "Default baudrate for Altera UART ports"
1192         depends on SERIAL_ALTERA_UART
1193         default 115200
1194         help
1195           This setting lets you define what the default baudrate is for the
1196           Altera UART ports. The usual default varies from board to board,
1197           and this setting is a way of catering for that.
1198
1199 config SERIAL_ALTERA_UART_CONSOLE
1200         bool "Altera UART console support"
1201         depends on SERIAL_ALTERA_UART=y
1202         select SERIAL_CORE_CONSOLE
1203         select SERIAL_EARLYCON
1204         help
1205           Enable a Altera UART port to be the system console.
1206
1207 config SERIAL_IFX6X60
1208         tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)"
1209         depends on GPIOLIB || COMPILE_TEST
1210         depends on SPI && HAS_DMA
1211         help
1212           Support for the IFX6x60 modem devices on Intel MID platforms.
1213
1214 config SERIAL_PCH_UART
1215         tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1216         depends on PCI && (X86_32 || MIPS ||  COMPILE_TEST)
1217         select SERIAL_CORE
1218         help
1219           This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1220           which is an IOH(Input/Output Hub) for x86 embedded processor.
1221           Enabling PCH_DMA, this PCH UART works as DMA mode.
1222
1223           This driver also can be used for LAPIS Semiconductor IOH(Input/
1224           Output Hub), ML7213, ML7223 and ML7831.
1225           ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1226           for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1227           ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1228           ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1229
1230 config SERIAL_PCH_UART_CONSOLE
1231         bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1232         depends on SERIAL_PCH_UART=y
1233         select SERIAL_CORE_CONSOLE
1234         help
1235           Say Y here if you wish to use the PCH UART as the system console
1236           (the system  console is the device which receives all kernel messages and
1237           warnings and which allows logins in single user mode).
1238
1239 config SERIAL_MXS_AUART
1240         tristate "MXS AUART support"
1241         depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1242         select SERIAL_CORE
1243         select SERIAL_MCTRL_GPIO if GPIOLIB
1244         help
1245           This driver supports the MXS and Alphascale ASM9260 Application
1246           UART (AUART) port.
1247
1248 config SERIAL_MXS_AUART_CONSOLE
1249         bool "MXS AUART console support"
1250         depends on SERIAL_MXS_AUART=y
1251         select SERIAL_CORE_CONSOLE
1252         help
1253           Enable a MXS AUART port to be the system console.
1254
1255 config SERIAL_XILINX_PS_UART
1256         tristate "Cadence (Xilinx Zynq) UART support"
1257         depends on OF
1258         select SERIAL_CORE
1259         help
1260           This driver supports the Cadence UART. It is found e.g. in Xilinx
1261           Zynq.
1262
1263 config SERIAL_XILINX_PS_UART_CONSOLE
1264         bool "Cadence UART console support"
1265         depends on SERIAL_XILINX_PS_UART=y
1266         select SERIAL_CORE_CONSOLE
1267         select SERIAL_EARLYCON
1268         help
1269           Enable a Cadence UART port to be the system console.
1270
1271 config SERIAL_AR933X
1272         tristate "AR933X serial port support"
1273         depends on HAVE_CLK && ATH79
1274         select SERIAL_CORE
1275         select SERIAL_MCTRL_GPIO if GPIOLIB
1276         help
1277           If you have an Atheros AR933X SOC based board and want to use the
1278           built-in UART of the SoC, say Y to this option.
1279
1280           To compile this driver as a module, choose M here: the
1281           module will be called ar933x_uart.
1282
1283 config SERIAL_AR933X_CONSOLE
1284         bool "Console on AR933X serial port"
1285         depends on SERIAL_AR933X=y
1286         select SERIAL_CORE_CONSOLE
1287         help
1288           Enable a built-in UART port of the AR933X to be the system console.
1289
1290 config SERIAL_AR933X_NR_UARTS
1291         int "Maximum number of AR933X serial ports"
1292         depends on SERIAL_AR933X
1293         default "2"
1294         help
1295           Set this to the number of serial ports you want the driver
1296           to support.
1297
1298 config SERIAL_EFM32_UART
1299         tristate "EFM32 UART/USART port"
1300         depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
1301         select SERIAL_CORE
1302         help
1303           This driver support the USART and UART ports on
1304           Energy Micro's efm32 SoCs.
1305
1306 config SERIAL_MPS2_UART_CONSOLE
1307         bool "MPS2 UART console support"
1308         depends on SERIAL_MPS2_UART
1309         select SERIAL_CORE_CONSOLE
1310         select SERIAL_EARLYCON
1311
1312 config SERIAL_MPS2_UART
1313         bool "MPS2 UART port"
1314         depends on ARCH_MPS2 || COMPILE_TEST
1315         select SERIAL_CORE
1316         help
1317           This driver support the UART ports on ARM MPS2.
1318
1319 config SERIAL_EFM32_UART_CONSOLE
1320         bool "EFM32 UART/USART console support"
1321         depends on SERIAL_EFM32_UART=y
1322         select SERIAL_CORE_CONSOLE
1323
1324 config SERIAL_ARC
1325         tristate "ARC UART driver support"
1326         select SERIAL_CORE
1327         help
1328           Driver for on-chip UART for ARC(Synopsys) for the legacy
1329           FPGA Boards (ML50x/ARCAngel4)
1330
1331 config SERIAL_ARC_CONSOLE
1332         bool "Console on ARC UART"
1333         depends on SERIAL_ARC=y
1334         select SERIAL_CORE_CONSOLE
1335         select SERIAL_EARLYCON
1336         help
1337           Enable system Console on ARC UART
1338
1339 config SERIAL_ARC_NR_PORTS
1340         int "Number of ARC UART ports"
1341         depends on SERIAL_ARC
1342         range 1 3
1343         default "1"
1344         help
1345           Set this to the number of serial ports you want the driver
1346           to support.
1347
1348 config SERIAL_RP2
1349         tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1350         depends on PCI
1351         select SERIAL_CORE
1352         help
1353           This driver supports the Comtrol RocketPort EXPRESS and
1354           RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1355           These adapters use a "RocketPort 2" ASIC that is not compatible
1356           with the original RocketPort driver (CONFIG_ROCKETPORT).
1357
1358           To compile this driver as a module, choose M here: the
1359           module will be called rp2.
1360
1361           If you want to compile this driver into the kernel, say Y here.  If
1362           you don't have a suitable RocketPort card installed, say N.
1363
1364 config SERIAL_RP2_NR_UARTS
1365         int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1366         depends on SERIAL_RP2
1367         default "32"
1368         help
1369           If multiple cards are present, the default limit of 32 ports may
1370           need to be increased.
1371
1372 config SERIAL_FSL_LPUART
1373         tristate "Freescale lpuart serial port support"
1374         depends on HAS_DMA
1375         select SERIAL_CORE
1376         help
1377           Support for the on-chip lpuart on some Freescale SOCs.
1378
1379 config SERIAL_FSL_LPUART_CONSOLE
1380         bool "Console on Freescale lpuart serial port"
1381         depends on SERIAL_FSL_LPUART=y
1382         select SERIAL_CORE_CONSOLE
1383         select SERIAL_EARLYCON
1384         help
1385           If you have enabled the lpuart serial port on the Freescale SoCs,
1386           you can make it the console by answering Y to this option.
1387
1388 config SERIAL_FSL_LINFLEXUART
1389         tristate "Freescale LINFlexD UART serial port support"
1390         depends on PRINTK
1391         select SERIAL_CORE
1392         help
1393           Support for the on-chip LINFlexD UART on some Freescale SOCs.
1394
1395 config SERIAL_FSL_LINFLEXUART_CONSOLE
1396         bool "Console on Freescale LINFlexD UART serial port"
1397         depends on SERIAL_FSL_LINFLEXUART=y
1398         select SERIAL_CORE_CONSOLE
1399         select SERIAL_EARLYCON
1400         help
1401           If you have enabled the LINFlexD UART serial port on the Freescale
1402           SoCs, you can make it the console by answering Y to this option.
1403
1404 config SERIAL_CONEXANT_DIGICOLOR
1405         tristate "Conexant Digicolor CX92xxx USART serial port support"
1406         depends on OF
1407         select SERIAL_CORE
1408         help
1409           Support for the on-chip USART on Conexant Digicolor SoCs.
1410
1411 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1412         bool "Console on Conexant Digicolor serial port"
1413         depends on SERIAL_CONEXANT_DIGICOLOR=y
1414         select SERIAL_CORE_CONSOLE
1415         help
1416           If you have enabled the USART serial port on Conexant Digicolor
1417           SoCs, you can make it the console by answering Y to this option.
1418
1419 config SERIAL_ST_ASC
1420         tristate "ST ASC serial port support"
1421         select SERIAL_CORE
1422         depends on ARM || COMPILE_TEST
1423         help
1424           This driver is for the on-chip Asychronous Serial Controller on
1425           STMicroelectronics STi SoCs.
1426           ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1427           It support all industry standard baud rates.
1428
1429           If unsure, say N.
1430
1431 config SERIAL_ST_ASC_CONSOLE
1432         bool "Support for console on ST ASC"
1433         depends on SERIAL_ST_ASC=y
1434         select SERIAL_CORE_CONSOLE
1435
1436 config SERIAL_MEN_Z135
1437         tristate "MEN 16z135 Support"
1438         select SERIAL_CORE
1439         depends on MCB
1440         help
1441           Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1442           on a MCB carrier.
1443
1444           This driver can also be build as a module. If so, the module will be called
1445           men_z135_uart.ko
1446
1447 config SERIAL_SPRD
1448         tristate "Support for Spreadtrum serial"
1449         select SERIAL_CORE
1450         depends on COMMON_CLK
1451         help
1452           This enables the driver for the Spreadtrum's serial.
1453
1454 config SERIAL_SPRD_CONSOLE
1455         bool "Spreadtrum UART console support"
1456         depends on SERIAL_SPRD=y
1457         select SERIAL_CORE_CONSOLE
1458         select SERIAL_EARLYCON
1459         help
1460           Support for early debug console using Spreadtrum's serial. This enables
1461           the console before standard serial driver is probed. This is enabled
1462           with "earlycon" on the kernel command line. The console is
1463           enabled when early_param is processed.
1464
1465 config SERIAL_STM32
1466         tristate "STMicroelectronics STM32 serial port support"
1467         select SERIAL_CORE
1468         depends on ARCH_STM32 || COMPILE_TEST
1469         select SERIAL_MCTRL_GPIO if GPIOLIB
1470         help
1471           This driver is for the on-chip Serial Controller on
1472           STMicroelectronics STM32 MCUs.
1473           USART supports Rx & Tx functionality.
1474           It support all industry standard baud rates.
1475
1476           If unsure, say N.
1477
1478 config SERIAL_STM32_CONSOLE
1479         bool "Support for console on STM32"
1480         depends on SERIAL_STM32=y
1481         select SERIAL_CORE_CONSOLE
1482
1483 config SERIAL_MVEBU_UART
1484         bool "Marvell EBU serial port support"
1485         depends on ARCH_MVEBU || COMPILE_TEST
1486         select SERIAL_CORE
1487         help
1488           This driver is for Marvell EBU SoC's UART. If you have a machine
1489           based on the Armada-3700 SoC and wish to use the on-board serial
1490           port,
1491           say 'Y' here.
1492           Otherwise, say 'N'.
1493
1494 config SERIAL_MVEBU_CONSOLE
1495         bool "Console on Marvell EBU serial port"
1496         depends on SERIAL_MVEBU_UART
1497         select SERIAL_CORE_CONSOLE
1498         select SERIAL_EARLYCON
1499         default y
1500         help
1501           Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1502           (the system console is the device which receives all kernel messages
1503           and warnings and which allows logins in single user mode)
1504           Otherwise, say 'N'.
1505
1506 config SERIAL_OWL
1507         tristate "Actions Semi Owl serial port support"
1508         depends on ARCH_ACTIONS || COMPILE_TEST
1509         select SERIAL_CORE
1510         help
1511           This driver is for Actions Semiconductor S500/S900 SoC's UART.
1512           Say 'Y' here if you wish to use the on-board serial port.
1513           Otherwise, say 'N'.
1514
1515 config SERIAL_OWL_CONSOLE
1516         bool "Console on Actions Semi Owl serial port"
1517         depends on SERIAL_OWL=y
1518         select SERIAL_CORE_CONSOLE
1519         select SERIAL_EARLYCON
1520         default y
1521         help
1522           Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1523           as the system console.
1524
1525 config SERIAL_RDA
1526         bool "RDA Micro serial port support"
1527         depends on ARCH_RDA || COMPILE_TEST
1528         select SERIAL_CORE
1529         help
1530           This driver is for RDA8810PL SoC's UART.
1531           Say 'Y' here if you wish to use the on-board serial port.
1532           Otherwise, say 'N'.
1533
1534 config SERIAL_RDA_CONSOLE
1535         bool "Console on RDA Micro serial port"
1536         depends on SERIAL_RDA=y
1537         select SERIAL_CORE_CONSOLE
1538         select SERIAL_EARLYCON
1539         default y
1540         help
1541           Say 'Y' here if you wish to use the RDA8810PL UART as the system
1542           console. Only earlycon is implemented currently.
1543
1544 config SERIAL_MILBEAUT_USIO
1545         tristate "Milbeaut USIO/UART serial port support"
1546         depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1547         default ARCH_MILBEAUT
1548         select SERIAL_CORE
1549         help
1550           This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1551
1552 config SERIAL_MILBEAUT_USIO_PORTS
1553         int "Maximum number of CSIO/UART ports (1-8)"
1554         range 1 8
1555         depends on SERIAL_MILBEAUT_USIO
1556         default "4"
1557
1558 config SERIAL_MILBEAUT_USIO_CONSOLE
1559         bool "Support for console on MILBEAUT USIO/UART serial port"
1560         depends on SERIAL_MILBEAUT_USIO=y
1561         default y
1562         select SERIAL_CORE_CONSOLE
1563         select SERIAL_EARLYCON
1564         help
1565           Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1566           SoCs as the system console (the system console is the device which
1567           receives all kernel messages and warnings and which allows logins in
1568           single user mode).
1569
1570 endmenu
1571
1572 config SERIAL_MCTRL_GPIO
1573         tristate