1 # SPDX-License-Identifier: GPL-2.0
3 # Serial device configuration
11 depends on SERIAL_CORE
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.
17 source "drivers/tty/serial/8250/Kconfig"
19 comment "Non-8250 serial port support"
21 config SERIAL_AMBA_PL010
22 tristate "ARM AMBA PL010 serial port support"
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.
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
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).
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
48 config SERIAL_AMBA_PL011
49 tristate "ARM AMBA PL011 serial port support"
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
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
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).
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
76 config SERIAL_EARLYCON_ARM_SEMIHOST
77 bool "Early console using ARM semihosting"
78 depends on ARM64 || ARM
80 select SERIAL_CORE_CONSOLE
81 select SERIAL_EARLYCON
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.
88 config SERIAL_EARLYCON_RISCV_SBI
89 bool "Early console using RISC-V SBI"
90 depends on RISCV_SBI_V01
92 select SERIAL_CORE_CONSOLE
93 select SERIAL_EARLYCON
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.
100 config SERIAL_SB1250_DUART
101 tristate "BCM1xxx on-chip DUART serial support"
102 depends on SIBYTE_SB1xxx_SOC=y
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.
112 If unsure, say Y. To compile this driver as a module, choose M here:
113 the module will be called sb1250-duart.
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
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
129 bool "AT91 on-chip serial port support"
130 depends on ARCH_AT91 || COMPILE_TEST
132 select SERIAL_MCTRL_GPIO if GPIOLIB
133 select MFD_AT91_USART
135 This enables the driver for the on-chip UARTs of the Atmel
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
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).
148 config SERIAL_ATMEL_PDC
149 bool "Support DMA transfers on AT91 serial port"
150 depends on SERIAL_ATMEL
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.
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.
163 config SERIAL_ATMEL_TTYAT
164 bool "Install as device ttyATn instead of ttySn"
165 depends on SERIAL_ATMEL=y
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.
175 To use this, you should create suitable ttyATn device nodes in
176 /dev/, and pass "console=ttyATn" to the kernel.
178 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
180 config SERIAL_KGDB_NMI
181 bool "Serial console over KGDB NMI debugger port"
182 depends on KGDB_SERIAL_CONSOLE
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).
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.
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
200 tristate "Meson serial port support"
201 depends on ARCH_MESON
204 This enables the driver for the on-chip UARTs of the Amlogic
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
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.
218 config SERIAL_CLPS711X
219 tristate "CLPS711X serial port support"
220 depends on ARCH_CLPS711X || COMPILE_TEST
222 select SERIAL_MCTRL_GPIO if GPIOLIB
224 This enables the driver for the on-chip UARTs of the Cirrus
225 Logic EP711x/EP721x/EP731x processors.
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
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
237 config SERIAL_SAMSUNG
238 tristate "Samsung SoC serial support"
239 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
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
247 config SERIAL_SAMSUNG_UARTS_4
249 depends on SERIAL_SAMSUNG
250 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
252 Internal node for the common case of 4 Samsung compatible UARTs
254 config SERIAL_SAMSUNG_UARTS
256 depends on SERIAL_SAMSUNG
257 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
260 Select the number of available UART ports for the Samsung S3C
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
269 Allow selection of the S3C24XX on-board serial ports for use as
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
279 config SERIAL_SIRFSOC
280 tristate "SiRF SoC Platform Serial port support"
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).
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
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
302 tristate "NVIDIA Tegra20/30 SoC serial controller"
303 depends on ARCH_TEGRA && TEGRA20_APB_DMA
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.
312 config SERIAL_TEGRA_TCU
313 tristate "NVIDIA Tegra Combined UART"
314 depends on ARCH_TEGRA && TEGRA_HSP_MBOX
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.
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
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
334 config SERIAL_MAX3100
335 tristate "MAX3100 support"
341 config SERIAL_MAX310X
342 tristate "MAX310X support"
343 depends on SPI_MASTER
345 select REGMAP_SPI if SPI_MASTER
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.
352 Say Y here if you want to support this ICs.
355 bool "DECstation DZ serial driver"
356 depends on MACH_DECSTATION && 32BIT
360 DZ11-family serial controllers for DECstations and VAXstations,
361 including the DC7085, M7814, and M7819.
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
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
374 Note that the firmware uses ttyS3 as the serial console on
375 DECstations that use this driver.
380 tristate "DECstation Z85C30 serial support"
381 depends on MACH_DECSTATION
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.
390 If unsure, say Y. To compile this driver as a module, choose M here:
391 the module will be called zs.
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
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
404 Note that the firmware uses ttyS1 as the serial console on the
405 Maxine and ttyS3 on the others using this driver.
410 tristate "DC21285 serial port support"
411 depends on FOOTBRIDGE
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
418 config SERIAL_21285_CONSOLE
419 bool "Console on DC21285 serial port"
420 depends on SERIAL_21285=y
421 select SERIAL_CORE_CONSOLE
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.
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.)
434 bool "PXA serial port support (DEPRECATED)"
435 depends on ARCH_PXA || ARCH_MMP
437 select SERIAL_8250_PXA if SERIAL_8250=y
438 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
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.
443 Unless you have a specific need, you should use SERIAL_8250_PXA
446 config SERIAL_PXA_NON8250
448 depends on !SERIAL_8250
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
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.
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.)
466 Unless you have a specific need, you should use SERIAL_8250_PXA
467 and SERIAL_8250_CONSOLE instead of this.
470 bool "SA1100 serial port support"
471 depends on ARCH_SA1100
473 select SERIAL_MCTRL_GPIO if GPIOLIB
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
480 config SERIAL_SA1100_CONSOLE
481 bool "Console on SA1100 serial port"
482 depends on SERIAL_SA1100
483 select SERIAL_CORE_CONSOLE
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.
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.)
496 tristate "IMX serial port support"
497 depends on ARCH_MXC || COMPILE_TEST
500 select SERIAL_MCTRL_GPIO if GPIOLIB
502 If you have a machine based on a Motorola IMX CPU you
503 can enable its onboard serial port by enabling this option.
505 config SERIAL_IMX_CONSOLE
506 tristate "Console on IMX serial port"
507 depends on SERIAL_IMX
508 select SERIAL_CORE_CONSOLE
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.
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.)
519 config SERIAL_IMX_EARLYCON
520 bool "Earlycon on IMX serial port"
521 depends on ARCH_MXC || COMPILE_TEST
523 select SERIAL_EARLYCON
524 select SERIAL_CORE_CONSOLE
525 default y if SERIAL_IMX_CONSOLE
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.
530 config SERIAL_UARTLITE
531 tristate "Xilinx uartlite serial port support"
535 Say Y here if you want to use the Xilinx uartlite serial controller.
537 To compile this driver as a module, choose M here: the
538 module will be called uartlite.
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
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).
550 config SERIAL_UARTLITE_NR_UARTS
551 int "Maximum number of uartlite serial ports"
552 depends on SERIAL_UARTLITE
556 Set this to the number of uartlites in your system, or the number
557 you think you might implement.
559 config SERIAL_SUNCORE
563 select SERIAL_CORE_CONSOLE
566 config SERIAL_SUNZILOG
567 tristate "Sun Zilog8530 serial support"
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.
573 config SERIAL_SUNZILOG_CONSOLE
574 bool "Console on Sun Zilog8530 serial port"
575 depends on SERIAL_SUNZILOG=y
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
582 tristate "Sun SU serial support"
583 depends on SPARC && PCI
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.
589 config SERIAL_SUNSU_CONSOLE
590 bool "Console on Sun SU serial port"
591 depends on SERIAL_SUNSU=y
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
598 tristate "Serial MUX support"
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
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
616 config SERIAL_MUX_CONSOLE
617 bool "Support for console on serial MUX"
618 depends on SERIAL_MUX=y
619 select SERIAL_CORE_CONSOLE
623 bool "PDC software console support"
624 depends on PARISC && !SERIAL_MUX && VT
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:
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
638 tristate "Sun Siemens SAB82532 serial support"
639 depends on SPARC && PCI
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
645 config SERIAL_SUNSAB_CONSOLE
646 bool "Console on Sun Siemens SAB82532 serial port"
647 depends on SERIAL_SUNSAB=y
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
654 bool "Sun4v Hypervisor Console support"
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.
660 config SERIAL_IP22_ZILOG
661 tristate "SGI Zilog8530 serial support"
662 depends on SGI_HAS_ZILOG
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.
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
674 tristate "SuperH SCI(F) serial port support"
675 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
677 select SERIAL_MCTRL_GPIO if GPIOLIB
679 config SERIAL_SH_SCI_NR_UARTS
680 int "Maximum number of SCI(F) serial ports" if EXPERT
683 depends on SERIAL_SH_SCI
685 default "10" if SUPERH
686 default "18" if ARCH_RENESAS
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
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
702 config SERIAL_SH_SCI_DMA
703 bool "DMA support" if EXPERT
704 depends on SERIAL_SH_SCI && DMA_ENGINE
707 config SERIAL_HS_LPC32XX
708 tristate "LPC32XX high speed serial port support"
709 depends on ARCH_LPC32XX || COMPILE_TEST
713 Support for the LPC32XX high speed serial ports (up to 900kbps).
714 Those are UARTs completely different from the Standard UARTs on the
716 Choose M or Y here to build this driver.
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
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
730 config SERIAL_CORE_CONSOLE
737 bool "Coldfire serial support"
741 This serial driver supports the Freescale Coldfire serial ports.
743 config SERIAL_MCF_BAUDRATE
744 int "Default baudrate for Coldfire serial ports"
745 depends on SERIAL_MCF
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.
752 config SERIAL_MCF_CONSOLE
753 bool "Coldfire serial console support"
754 depends on SERIAL_MCF
755 select SERIAL_CORE_CONSOLE
757 Enable a ColdFire internal serial port to be the system console.
759 config SERIAL_PMACZILOG
760 tristate "Mac or PowerMac z85c30 ESCC support"
761 depends on (M68K && MAC) || PPC_PMAC
764 This driver supports the Zilog z85C30 serial ports found on
766 Say Y or M if you want to be able to these serial ports.
768 config SERIAL_PMACZILOG_TTYS
769 bool "Use ttySn device nodes for Zilog z85c30"
770 depends on SERIAL_PMACZILOG
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.
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.
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
790 Say N unless you need the z85c30 ports on your (Power)Mac
791 to appear as /dev/ttySn.
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
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
803 tristate "CPM SCC/SMC serial port support"
804 depends on CPM2 || CPM1
807 This driver supports the SCC and SMC serial ports on Motorola
808 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
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
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).
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.)
827 tristate "Microchip PIC32 serial support"
828 depends on MACH_PIC32
831 If you have a PIC32, this driver supports the serial ports.
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
837 config SERIAL_PIC32_CONSOLE
838 bool "PIC32 serial console support"
839 depends on SERIAL_PIC32
840 select SERIAL_CORE_CONSOLE
842 If you have a PIC32, this driver supports the putting a console on one
845 Say Y to use the PIC32 console, otherwise say N.
847 config SERIAL_MPC52xx
848 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
849 depends on PPC_MPC52xx || PPC_MPC512x
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
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
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.
865 config SERIAL_MPC52xx_CONSOLE_BAUD
866 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
867 depends on SERIAL_MPC52xx_CONSOLE=y
870 Select the MPC52xx console baud rate.
871 This value is only used if the bootloader doesn't pass in the
875 tristate "IBM Multiport Serial Adapter"
876 depends on PCI && PPC_PSERIES
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.
884 This driver can also be built as a module. If so, the module
888 bool "TMPTX39XX/49XX SIO support"
889 depends on HAS_TXX9_SERIAL
893 config HAS_TXX9_SERIAL
896 config SERIAL_TXX9_NR_UARTS
897 int "Maximum number of TMPTX39XX/49XX SIO ports"
898 depends on SERIAL_TXX9
901 config SERIAL_TXX9_CONSOLE
902 bool "TMPTX39XX/49XX SIO Console support"
903 depends on SERIAL_TXX9=y
904 select SERIAL_CORE_CONSOLE
906 config SERIAL_TXX9_STDSERIAL
907 bool "TX39XX/49XX SIO act as standard serial"
908 depends on !SERIAL_8250 && SERIAL_TXX9
911 tristate "NEC VR4100 series Serial Interface Unit support"
912 depends on CPU_VR41XX
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.
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
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.
928 tristate "Digi International NEO and Classic PCI Support"
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.
938 If you have a card like this, say Y here, otherwise say N.
940 To compile this driver as a module, choose M here: the
941 module will be called jsm.
944 tristate "MSM on-chip serial port support"
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
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
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
966 Serial console driver for Qualcomm Technologies Inc's GENI based
970 bool "VIA VT8500 on-chip serial port support"
971 depends on ARCH_VT8500
974 config SERIAL_VT8500_CONSOLE
975 bool "VIA VT8500 serial console support"
976 depends on SERIAL_VT8500=y
977 select SERIAL_CORE_CONSOLE
980 tristate "OMAP serial port support"
981 depends on ARCH_OMAP2PLUS
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.
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
991 config SERIAL_OMAP_CONSOLE
992 bool "Console on OMAP serial port"
993 depends on SERIAL_OMAP=y
994 select SERIAL_CORE_CONSOLE
996 Select this option if you would like to use omap serial port as
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
1006 config SERIAL_SIFIVE
1007 tristate "SiFive UART support"
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.
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
1021 Select this option if you would like to use a SiFive UART as the
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
1031 config SERIAL_LANTIQ
1032 tristate "Lantiq serial driver"
1033 depends on (LANTIQ || X86) || COMPILE_TEST
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.
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
1046 Select this option if you would like to use a Lantiq UART as the
1050 tristate "Freescale QUICC Engine serial port support"
1051 depends on QUICC_ENGINE
1055 This driver supports the QE serial ports on Freescale embedded
1056 PowerPC that contain a QUICC Engine.
1058 config SERIAL_SCCNXP
1059 tristate "SCCNXP serial port support"
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.
1066 config SERIAL_SCCNXP_CONSOLE
1067 bool "Console on SCCNXP serial port"
1068 depends on SERIAL_SCCNXP=y
1069 select SERIAL_CORE_CONSOLE
1071 Support for console on SCCNXP serial ports.
1073 config SERIAL_SC16IS7XX_CORE
1076 config SERIAL_SC16IS7XX
1077 tristate "SC16IS7xx serial support"
1079 depends on (SPI_MASTER && !I2C) || I2C
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.
1085 config SERIAL_SC16IS7XX_I2C
1086 bool "SC16IS7xx for I2C interface"
1087 depends on SERIAL_SC16IS7XX
1089 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1090 select REGMAP_I2C if I2C
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.
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
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.
1110 config SERIAL_TIMBERDALE
1111 tristate "Support for timberdale UART"
1113 depends on X86_32 || COMPILE_TEST
1115 Add support for UART controller on timberdale.
1117 config SERIAL_BCM63XX
1118 tristate "Broadcom BCM63xx/BCM33xx UART support"
1120 depends on COMMON_CLK
1122 This enables the driver for the onchip UART core found on
1123 the following chipsets:
1125 BCM33xx (cable modem)
1126 BCM63xx/BCM63xxx (DSL)
1128 BCM7xxx (STB) - DOCSIS console
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
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.
1139 config SERIAL_GRLIB_GAISLER_APBUART
1140 tristate "GRLIB APBUART serial support"
1141 depends on OF && SPARC
1144 Add support for the GRLIB APBUART serial port.
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
1151 Support for running a console on the GRLIB APBUART
1153 config SERIAL_ALTERA_JTAGUART
1154 tristate "Altera JTAG UART support"
1157 This driver supports the Altera JTAG UART port.
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
1165 Enable a Altera JTAG UART port to be the system console.
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
1172 Bypass console output and keep going even if there is no
1173 JTAG terminal connection with the host.
1175 config SERIAL_ALTERA_UART
1176 tristate "Altera UART support"
1179 This driver supports the Altera softcore UART port.
1181 config SERIAL_ALTERA_UART_MAXPORTS
1182 int "Maximum number of Altera UART ports"
1183 depends on SERIAL_ALTERA_UART
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.
1190 config SERIAL_ALTERA_UART_BAUDRATE
1191 int "Default baudrate for Altera UART ports"
1192 depends on SERIAL_ALTERA_UART
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.
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
1205 Enable a Altera UART port to be the system console.
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
1212 Support for the IFX6x60 modem devices on Intel MID platforms.
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)
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.
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.
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
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).
1239 config SERIAL_MXS_AUART
1240 tristate "MXS AUART support"
1241 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1243 select SERIAL_MCTRL_GPIO if GPIOLIB
1245 This driver supports the MXS and Alphascale ASM9260 Application
1248 config SERIAL_MXS_AUART_CONSOLE
1249 bool "MXS AUART console support"
1250 depends on SERIAL_MXS_AUART=y
1251 select SERIAL_CORE_CONSOLE
1253 Enable a MXS AUART port to be the system console.
1255 config SERIAL_XILINX_PS_UART
1256 tristate "Cadence (Xilinx Zynq) UART support"
1260 This driver supports the Cadence UART. It is found e.g. in Xilinx
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
1269 Enable a Cadence UART port to be the system console.
1271 config SERIAL_AR933X
1272 tristate "AR933X serial port support"
1273 depends on HAVE_CLK && ATH79
1275 select SERIAL_MCTRL_GPIO if GPIOLIB
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.
1280 To compile this driver as a module, choose M here: the
1281 module will be called ar933x_uart.
1283 config SERIAL_AR933X_CONSOLE
1284 bool "Console on AR933X serial port"
1285 depends on SERIAL_AR933X=y
1286 select SERIAL_CORE_CONSOLE
1288 Enable a built-in UART port of the AR933X to be the system console.
1290 config SERIAL_AR933X_NR_UARTS
1291 int "Maximum number of AR933X serial ports"
1292 depends on SERIAL_AR933X
1295 Set this to the number of serial ports you want the driver
1298 config SERIAL_EFM32_UART
1299 tristate "EFM32 UART/USART port"
1300 depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
1303 This driver support the USART and UART ports on
1304 Energy Micro's efm32 SoCs.
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
1312 config SERIAL_MPS2_UART
1313 bool "MPS2 UART port"
1314 depends on ARCH_MPS2 || COMPILE_TEST
1317 This driver support the UART ports on ARM MPS2.
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
1325 tristate "ARC UART driver support"
1328 Driver for on-chip UART for ARC(Synopsys) for the legacy
1329 FPGA Boards (ML50x/ARCAngel4)
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
1337 Enable system Console on ARC UART
1339 config SERIAL_ARC_NR_PORTS
1340 int "Number of ARC UART ports"
1341 depends on SERIAL_ARC
1345 Set this to the number of serial ports you want the driver
1349 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
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).
1358 To compile this driver as a module, choose M here: the
1359 module will be called rp2.
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.
1364 config SERIAL_RP2_NR_UARTS
1365 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1366 depends on SERIAL_RP2
1369 If multiple cards are present, the default limit of 32 ports may
1370 need to be increased.
1372 config SERIAL_FSL_LPUART
1373 tristate "Freescale lpuart serial port support"
1377 Support for the on-chip lpuart on some Freescale SOCs.
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
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.
1388 config SERIAL_FSL_LINFLEXUART
1389 tristate "Freescale LINFlexD UART serial port support"
1393 Support for the on-chip LINFlexD UART on some Freescale SOCs.
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
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.
1404 config SERIAL_CONEXANT_DIGICOLOR
1405 tristate "Conexant Digicolor CX92xxx USART serial port support"
1409 Support for the on-chip USART on Conexant Digicolor SoCs.
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
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.
1419 config SERIAL_ST_ASC
1420 tristate "ST ASC serial port support"
1422 depends on ARM || COMPILE_TEST
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.
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
1436 config SERIAL_MEN_Z135
1437 tristate "MEN 16z135 Support"
1441 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1444 This driver can also be build as a module. If so, the module will be called
1448 tristate "Support for Spreadtrum serial"
1450 depends on COMMON_CLK
1452 This enables the driver for the Spreadtrum's serial.
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
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.
1466 tristate "STMicroelectronics STM32 serial port support"
1468 depends on ARCH_STM32 || COMPILE_TEST
1469 select SERIAL_MCTRL_GPIO if GPIOLIB
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.
1478 config SERIAL_STM32_CONSOLE
1479 bool "Support for console on STM32"
1480 depends on SERIAL_STM32=y
1481 select SERIAL_CORE_CONSOLE
1483 config SERIAL_MVEBU_UART
1484 bool "Marvell EBU serial port support"
1485 depends on ARCH_MVEBU || COMPILE_TEST
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
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
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)
1507 tristate "Actions Semi Owl serial port support"
1508 depends on ARCH_ACTIONS || COMPILE_TEST
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.
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
1522 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1523 as the system console.
1526 bool "RDA Micro serial port support"
1527 depends on ARCH_RDA || COMPILE_TEST
1530 This driver is for RDA8810PL SoC's UART.
1531 Say 'Y' here if you wish to use the on-board serial port.
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
1541 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1542 console. Only earlycon is implemented currently.
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
1550 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1552 config SERIAL_MILBEAUT_USIO_PORTS
1553 int "Maximum number of CSIO/UART ports (1-8)"
1555 depends on SERIAL_MILBEAUT_USIO
1558 config SERIAL_MILBEAUT_USIO_CONSOLE
1559 bool "Support for console on MILBEAUT USIO/UART serial port"
1560 depends on SERIAL_MILBEAUT_USIO=y
1562 select SERIAL_CORE_CONSOLE
1563 select SERIAL_EARLYCON
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
1570 config SERIAL_LITEUART
1571 tristate "LiteUART serial port support"
1572 depends on HAS_IOMEM
1573 depends on OF || COMPILE_TEST
1577 This driver is for the FPGA-based LiteUART serial controller from LiteX
1580 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1583 config SERIAL_LITEUART_MAX_PORTS
1584 int "Maximum number of LiteUART ports"
1585 depends on SERIAL_LITEUART
1588 Set this to the maximum number of serial ports you want the driver
1591 config SERIAL_LITEUART_CONSOLE
1592 bool "LiteUART serial port console support"
1593 depends on SERIAL_LITEUART=y
1594 select SERIAL_CORE_CONSOLE
1596 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1597 controller from LiteX SoC builder as the system console
1598 (the system console is the device which receives all kernel messages
1599 and warnings and which allows logins in single user mode).
1604 config SERIAL_MCTRL_GPIO