2 # Serial device configuration
10 config SERIAL_EARLYCON
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_SB1250_DUART
89 tristate "BCM1xxx on-chip DUART serial support"
90 depends on SIBYTE_SB1xxx_SOC=y
94 Support for the asynchronous serial interface (DUART) included in
95 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
96 the letter D in DUART stands for "dual", which is how the device
97 is implemented. Depending on the SOC configuration there may be
98 one or more DUARTs available of which all are handled.
100 If unsure, say Y. To compile this driver as a module, choose M here:
101 the module will be called sb1250-duart.
103 config SERIAL_SB1250_DUART_CONSOLE
104 bool "Support for console on a BCM1xxx DUART serial port"
105 depends on SERIAL_SB1250_DUART=y
106 select SERIAL_CORE_CONSOLE
109 If you say Y here, it will be possible to use a serial port as the
110 system console (the system console is the device which receives all
111 kernel messages and warnings and which allows logins in single user
117 bool "AT91 on-chip serial port support"
119 depends on ARCH_AT91 || COMPILE_TEST
121 select SERIAL_MCTRL_GPIO if GPIOLIB
123 This enables the driver for the on-chip UARTs of the Atmel
126 config SERIAL_ATMEL_CONSOLE
127 bool "Support for console on AT91 serial port"
128 depends on SERIAL_ATMEL=y
129 select SERIAL_CORE_CONSOLE
131 Say Y here if you wish to use an on-chip UART on a Atmel
132 AT91 processor as the system console (the system
133 console is the device which receives all kernel messages and
134 warnings and which allows logins in single user mode).
136 config SERIAL_ATMEL_PDC
137 bool "Support DMA transfers on AT91 serial port"
138 depends on SERIAL_ATMEL
141 Say Y here if you wish to use the PDC to do DMA transfers to
142 and from the Atmel AT91 serial port. In order to
143 actually use DMA transfers, make sure that the use_dma_tx
144 and use_dma_rx members in the atmel_uart_data struct is set
145 appropriately for each port.
147 Note that break and error handling currently doesn't work
148 properly when DMA is enabled. Make sure that ports where
149 this matters don't use DMA.
151 config SERIAL_ATMEL_TTYAT
152 bool "Install as device ttyATn instead of ttySn"
153 depends on SERIAL_ATMEL=y
155 Say Y here if you wish to have the internal AT91 UARTs
156 appear as /dev/ttyATn (major 204, minor starting at 154)
157 instead of the normal /dev/ttySn (major 4, minor starting at
158 64). This is necessary if you also want other UARTs, such as
159 external 8250/16C550 compatible UARTs.
160 The ttySn nodes are legally reserved for the 8250 serial driver
161 but are often misused by other serial drivers.
163 To use this, you should create suitable ttyATn device nodes in
164 /dev/, and pass "console=ttyATn" to the kernel.
166 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
168 config SERIAL_KGDB_NMI
169 bool "Serial console over KGDB NMI debugger port"
170 depends on KGDB_SERIAL_CONSOLE
172 This special driver allows you to temporary use NMI debugger port
173 as a normal console (assuming that the port is attached to KGDB).
175 Unlike KDB's disable_nmi command, with this driver you are always
176 able to go back to the debugger using KGDB escape sequence ($3#33).
177 This is because this console driver processes the input in NMI
178 context, and thus is able to intercept the magic sequence.
180 Note that since the console interprets input and uses polling
181 communication methods, for things like PPP you still must fully
182 detach debugger port from the KGDB NMI (i.e. disable_nmi), and
188 bool "Micrel KS8695 (Centaur) serial port support"
189 depends on ARCH_KS8695
192 This selects the Micrel Centaur KS8695 UART. Say Y here.
194 config SERIAL_KS8695_CONSOLE
195 bool "Support for console on KS8695 (Centaur) serial port"
196 depends on SERIAL_KS8695=y
197 select SERIAL_CORE_CONSOLE
199 Say Y here if you wish to use a KS8695 (Centaur) UART as the
200 system console (the system console is the device which
201 receives all kernel messages and warnings and which allows
202 logins in single user mode).
205 tristate "Meson serial port support"
206 depends on ARCH_MESON
209 This enables the driver for the on-chip UARTs of the Amlogic
212 config SERIAL_MESON_CONSOLE
213 bool "Support for console on meson"
214 depends on SERIAL_MESON=y
215 select SERIAL_CORE_CONSOLE
216 select SERIAL_EARLYCON
218 Say Y here if you wish to use a Amlogic MesonX UART as the
219 system console (the system console is the device which
220 receives all kernel messages and warnings and which allows
221 logins in single user mode) as /dev/ttyAMLx.
223 config SERIAL_CLPS711X
224 tristate "CLPS711X serial port support"
225 depends on ARCH_CLPS711X || COMPILE_TEST
227 select SERIAL_MCTRL_GPIO if GPIOLIB
229 This enables the driver for the on-chip UARTs of the Cirrus
230 Logic EP711x/EP721x/EP731x processors.
232 config SERIAL_CLPS711X_CONSOLE
233 bool "Support for console on CLPS711X serial port"
234 depends on SERIAL_CLPS711X=y
235 select SERIAL_CORE_CONSOLE
237 Even if you say Y here, the currently visible virtual console
238 (/dev/tty0) will still be used as the system console by default, but
239 you can alter that using a kernel command line option such as
242 config SERIAL_SAMSUNG
243 tristate "Samsung SoC serial support"
244 depends on PLAT_SAMSUNG || ARCH_EXYNOS
247 Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
248 providing /dev/ttySAC0, 1 and 2 (note, some machines may not
249 provide all of these ports, depending on how the serial port
252 config SERIAL_SAMSUNG_UARTS_4
254 depends on SERIAL_SAMSUNG
255 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
257 Internal node for the common case of 4 Samsung compatible UARTs
259 config SERIAL_SAMSUNG_UARTS
261 depends on SERIAL_SAMSUNG
262 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
265 Select the number of available UART ports for the Samsung S3C
268 config SERIAL_SAMSUNG_DEBUG
269 bool "Samsung SoC serial debug"
270 depends on SERIAL_SAMSUNG && DEBUG_LL
272 Add support for debugging the serial driver. Since this is
273 generally being used as a console, we use our own output
274 routines that go via the low-level debug printascii()
277 config SERIAL_SAMSUNG_CONSOLE
278 bool "Support for console on Samsung SoC serial port"
279 depends on SERIAL_SAMSUNG=y
280 select SERIAL_CORE_CONSOLE
281 select SERIAL_EARLYCON
283 Allow selection of the S3C24XX on-board serial ports for use as
286 Even if you say Y here, the currently visible virtual console
287 (/dev/tty0) will still be used as the system console by default, but
288 you can alter that using a kernel command line option such as
289 "console=ttySACx". (Try "man bootparam" or see the documentation of
290 your boot loader about how to pass options to the kernel at
293 config SERIAL_SIRFSOC
294 tristate "SiRF SoC Platform Serial port support"
298 Support for the on-chip UART on the CSR SiRFprimaII series,
299 providing /dev/ttySiRF0, 1 and 2 (note, some machines may not
300 provide all of these ports, depending on how the serial port
301 pins are configured).
303 config SERIAL_SIRFSOC_CONSOLE
304 bool "Support for console on SiRF SoC serial port"
305 depends on SERIAL_SIRFSOC=y
306 select SERIAL_CORE_CONSOLE
308 Even if you say Y here, the currently visible virtual console
309 (/dev/tty0) will still be used as the system console by default, but
310 you can alter that using a kernel command line option such as
311 "console=ttySiRFx". (Try "man bootparam" or see the documentation of
312 your boot loader about how to pass options to the kernel at
316 tristate "NVIDIA Tegra20/30 SoC serial controller"
317 depends on ARCH_TEGRA && TEGRA20_APB_DMA
320 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
321 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
322 provide all of these ports, depending on how the serial port
323 are enabled). This driver uses the APB DMA to achieve higher baudrate
324 and better performance.
326 config SERIAL_MAX3100
327 tristate "MAX3100 support"
333 config SERIAL_MAX310X
334 tristate "MAX310X support"
335 depends on SPI_MASTER
337 select REGMAP_SPI if SPI_MASTER
340 This selects support for an advanced UART from Maxim (Dallas).
341 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
342 Each IC contains 128 words each of receive and transmit FIFO
343 that can be controlled through I2C or high-speed SPI.
345 Say Y here if you want to support this ICs.
348 bool "DECstation DZ serial driver"
349 depends on MACH_DECSTATION && 32BIT
353 DZ11-family serial controllers for DECstations and VAXstations,
354 including the DC7085, M7814, and M7819.
356 config SERIAL_DZ_CONSOLE
357 bool "Support console on DECstation DZ serial driver"
358 depends on SERIAL_DZ=y
359 select SERIAL_CORE_CONSOLE
362 If you say Y here, it will be possible to use a serial port as the
363 system console (the system console is the device which receives all
364 kernel messages and warnings and which allows logins in single user
367 Note that the firmware uses ttyS3 as the serial console on
368 DECstations that use this driver.
373 tristate "DECstation Z85C30 serial support"
374 depends on MACH_DECSTATION
378 Support for the Zilog 85C350 serial communications controller used
379 for serial ports in newer DECstation systems. These include the
380 DECsystem 5900 and all models of the DECstation and DECsystem 5000
381 systems except from model 200.
383 If unsure, say Y. To compile this driver as a module, choose M here:
384 the module will be called zs.
386 config SERIAL_ZS_CONSOLE
387 bool "Support for console on a DECstation Z85C30 serial port"
388 depends on SERIAL_ZS=y
389 select SERIAL_CORE_CONSOLE
392 If you say Y here, it will be possible to use a serial port as the
393 system console (the system console is the device which receives all
394 kernel messages and warnings and which allows logins in single user
397 Note that the firmware uses ttyS1 as the serial console on the
398 Maxine and ttyS3 on the others using this driver.
403 tristate "DC21285 serial port support"
404 depends on FOOTBRIDGE
407 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
408 PCI bridge you can enable its onboard serial port by enabling this
411 config SERIAL_21285_CONSOLE
412 bool "Console on DC21285 serial port"
413 depends on SERIAL_21285=y
414 select SERIAL_CORE_CONSOLE
416 If you have enabled the serial port on the 21285 footbridge you can
417 make it the console by answering Y to this option.
419 Even if you say Y here, the currently visible virtual console
420 (/dev/tty0) will still be used as the system console by default, but
421 you can alter that using a kernel command line option such as
422 "console=ttyFB". (Try "man bootparam" or see the documentation of
423 your boot loader (lilo or loadlin) about how to pass options to the
424 kernel at boot time.)
427 bool "Marvell MPSC serial port support"
431 Say Y here if you want to use the Marvell MPSC serial controller.
433 config SERIAL_MPSC_CONSOLE
434 bool "Support for console on Marvell MPSC serial port"
435 depends on SERIAL_MPSC
436 select SERIAL_CORE_CONSOLE
438 Say Y here if you want to support a serial console on a Marvell MPSC.
441 bool "PXA serial port support (DEPRECATED)"
442 depends on ARCH_PXA || ARCH_MMP
444 select SERIAL_8250_PXA if SERIAL_8250=y
445 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
447 If you have a machine based on an Intel XScale PXA2xx CPU you
448 can enable its onboard serial ports by enabling this option.
450 Unless you have a specific need, you should use SERIAL_8250_PXA
453 config SERIAL_PXA_NON8250
455 depends on !SERIAL_8250
457 config SERIAL_PXA_CONSOLE
458 bool "Console on PXA serial port (DEPRECATED)"
459 depends on SERIAL_PXA
460 select SERIAL_CORE_CONSOLE
461 select SERIAL_8250_CONSOLE if SERIAL_8250=y
463 If you have enabled the serial port on the Intel XScale PXA
464 CPU you can make it the console by answering Y to this option.
466 Even if you say Y here, the currently visible virtual console
467 (/dev/tty0) will still be used as the system console by default, but
468 you can alter that using a kernel command line option such as
469 "console=ttySA0". (Try "man bootparam" or see the documentation of
470 your boot loader (lilo or loadlin) about how to pass options to the
471 kernel at boot time.)
473 Unless you have a specific need, you should use SERIAL_8250_PXA
474 and SERIAL_8250_CONSOLE instead of this.
477 bool "SA1100 serial port support"
478 depends on ARCH_SA1100
481 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
482 can enable its onboard serial port by enabling this option.
483 Please read <file:Documentation/arm/SA1100/serial_UART> for further
486 config SERIAL_SA1100_CONSOLE
487 bool "Console on SA1100 serial port"
488 depends on SERIAL_SA1100
489 select SERIAL_CORE_CONSOLE
491 If you have enabled the serial port on the SA1100/SA1110 StrongARM
492 CPU you can make it the console by answering Y to this option.
494 Even if you say Y here, the currently visible virtual console
495 (/dev/tty0) will still be used as the system console by default, but
496 you can alter that using a kernel command line option such as
497 "console=ttySA0". (Try "man bootparam" or see the documentation of
498 your boot loader (lilo or loadlin) about how to pass options to the
499 kernel at boot time.)
502 tristate "IMX serial port support"
504 depends on ARCH_MXC || COMPILE_TEST
507 select SERIAL_MCTRL_GPIO if GPIOLIB
509 If you have a machine based on a Motorola IMX CPU you
510 can enable its onboard serial port by enabling this option.
512 config SERIAL_IMX_CONSOLE
513 bool "Console on IMX serial port"
514 depends on SERIAL_IMX=y
515 select SERIAL_CORE_CONSOLE
516 select SERIAL_EARLYCON if OF
518 If you have enabled the serial port on the Freescale IMX
519 CPU you can make it the console by answering Y to this option.
521 Even if you say Y here, the currently visible virtual console
522 (/dev/tty0) will still be used as the system console by default, but
523 you can alter that using a kernel command line option such as
524 "console=ttymxc0". (Try "man bootparam" or see the documentation of
525 your bootloader about how to pass options to the kernel at boot time.)
527 config SERIAL_UARTLITE
528 tristate "Xilinx uartlite serial port support"
532 Say Y here if you want to use the Xilinx uartlite serial controller.
534 To compile this driver as a module, choose M here: the
535 module will be called uartlite.
537 config SERIAL_UARTLITE_CONSOLE
538 bool "Support for console on Xilinx uartlite serial port"
539 depends on SERIAL_UARTLITE=y
540 select SERIAL_CORE_CONSOLE
541 select SERIAL_EARLYCON
543 Say Y here if you wish to use a Xilinx uartlite as the system
544 console (the system console is the device which receives all kernel
545 messages and warnings and which allows logins in single user mode).
547 config SERIAL_UARTLITE_NR_UARTS
548 int "Maximum number of uartlite serial ports"
549 depends on SERIAL_UARTLITE
553 Set this to the number of uartlites in your system, or the number
554 you think you might implement.
556 config SERIAL_SUNCORE
560 select SERIAL_CORE_CONSOLE
563 config SERIAL_SUNZILOG
564 tristate "Sun Zilog8530 serial support"
567 This driver supports the Zilog8530 serial ports found on many Sparc
568 systems. Say Y or M if you want to be able to these serial ports.
570 config SERIAL_SUNZILOG_CONSOLE
571 bool "Console on Sun Zilog8530 serial port"
572 depends on SERIAL_SUNZILOG=y
574 If you would like to be able to use the Zilog8530 serial port
575 on your Sparc system as the console, you can do so by answering
579 tristate "Sun SU serial support"
580 depends on SPARC && PCI
582 This driver supports the 8250 serial ports that run the keyboard and
583 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
584 to these serial ports.
586 config SERIAL_SUNSU_CONSOLE
587 bool "Console on Sun SU serial port"
588 depends on SERIAL_SUNSU=y
590 If you would like to be able to use the SU serial port
591 on your Sparc system as the console, you can do so by answering
595 tristate "Serial MUX support"
600 Saying Y here will enable the hardware MUX serial driver for
601 the Nova, K class systems and D class with a 'remote control card'.
602 The hardware MUX is not 8250/16550 compatible therefore the
603 /dev/ttyB0 device is shared between the Serial MUX and the PDC
604 software console. The following steps need to be completed to use
607 1. create the device entry (mknod /dev/ttyB0 c 11 0)
608 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
609 3. Add device ttyB0 to /etc/securetty (if you want to log on as
610 root on this console.)
611 4. Change the kernel command console parameter to: console=ttyB0
613 config SERIAL_MUX_CONSOLE
614 bool "Support for console on serial MUX"
615 depends on SERIAL_MUX=y
616 select SERIAL_CORE_CONSOLE
620 bool "PDC software console support"
621 depends on PARISC && !SERIAL_MUX && VT
624 Saying Y here will enable the software based PDC console to be
625 used as the system console. This is useful for machines in
626 which the hardware based console has not been written yet. The
627 following steps must be completed to use the PDC console:
629 1. create the device entry (mknod /dev/ttyB0 c 11 0)
630 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
631 3. Add device ttyB0 to /etc/securetty (if you want to log on as
632 root on this console.)
633 4. Change the kernel command console parameter to: console=ttyB0
636 tristate "Sun Siemens SAB82532 serial support"
637 depends on SPARC && PCI
639 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
640 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
643 config SERIAL_SUNSAB_CONSOLE
644 bool "Console on Sun Siemens SAB82532 serial port"
645 depends on SERIAL_SUNSAB=y
647 If you would like to be able to use the SAB82532 serial port
648 on your Sparc system as the console, you can do so by answering
652 bool "Sun4v Hypervisor Console support"
655 This driver supports the console device found on SUN4V Sparc
656 systems. Say Y if you want to be able to use this device.
658 config SERIAL_IP22_ZILOG
659 tristate "SGI Zilog8530 serial support"
660 depends on SGI_HAS_ZILOG
663 This driver supports the Zilog8530 serial ports found on SGI
664 systems. Say Y or M if you want to be able to these serial ports.
666 config SERIAL_IP22_ZILOG_CONSOLE
667 bool "Console on SGI Zilog8530 serial port"
668 depends on SERIAL_IP22_ZILOG=y
669 select SERIAL_CORE_CONSOLE
672 tristate "SuperH SCI(F) serial port support"
673 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
675 select SERIAL_MCTRL_GPIO if GPIOLIB
677 config SERIAL_SH_SCI_NR_UARTS
678 int "Maximum number of SCI(F) serial ports" if EXPERT
679 depends on SERIAL_SH_SCI
681 default "10" if SUPERH
682 default "18" if ARCH_RENESAS
685 config SERIAL_SH_SCI_CONSOLE
686 bool "Support for console on SuperH SCI(F)" if EXPERT
687 depends on SERIAL_SH_SCI=y
688 select SERIAL_CORE_CONSOLE
691 config SERIAL_SH_SCI_EARLYCON
692 bool "Support for early console on SuperH SCI(F)" if EXPERT
693 depends on SERIAL_SH_SCI=y
694 select SERIAL_CORE_CONSOLE
695 select SERIAL_EARLYCON
696 default ARCH_RENESAS || H8300
698 config SERIAL_SH_SCI_DMA
699 bool "DMA support" if EXPERT
700 depends on SERIAL_SH_SCI && DMA_ENGINE
703 config SERIAL_PNX8XXX
704 bool "Enable PNX8XXX SoCs' UART Support"
705 depends on SOC_PNX833X
708 If you have a MIPS-based Philips SoC such as PNX8330 and you want
709 to use serial ports, say Y. Otherwise, say N.
711 config SERIAL_PNX8XXX_CONSOLE
712 bool "Enable PNX8XX0 serial console"
713 depends on SERIAL_PNX8XXX
714 select SERIAL_CORE_CONSOLE
716 If you have a MIPS-based Philips SoC such as PNX8330 and you want
717 to use serial console, say Y. Otherwise, say N.
719 config SERIAL_HS_LPC32XX
720 tristate "LPC32XX high speed serial port support"
721 depends on ARCH_LPC32XX && OF
724 Support for the LPC32XX high speed serial ports (up to 900kbps).
725 Those are UARTs completely different from the Standard UARTs on the
727 Choose M or Y here to build this driver.
729 config SERIAL_HS_LPC32XX_CONSOLE
730 bool "Enable LPC32XX high speed UART serial console"
731 depends on SERIAL_HS_LPC32XX=y
732 select SERIAL_CORE_CONSOLE
734 If you would like to be able to use one of the high speed serial
735 ports on the LPC32XX as the console, you can do so by answering
741 config SERIAL_CORE_CONSOLE
748 bool "Coldfire serial support"
752 This serial driver supports the Freescale Coldfire serial ports.
754 config SERIAL_MCF_BAUDRATE
755 int "Default baudrate for Coldfire serial ports"
756 depends on SERIAL_MCF
759 This setting lets you define what the default baudrate is for the
760 ColdFire serial ports. The usual default varies from board to board,
761 and this setting is a way of catering for that.
763 config SERIAL_MCF_CONSOLE
764 bool "Coldfire serial console support"
765 depends on SERIAL_MCF
766 select SERIAL_CORE_CONSOLE
768 Enable a ColdFire internal serial port to be the system console.
770 config SERIAL_PMACZILOG
771 tristate "Mac or PowerMac z85c30 ESCC support"
772 depends on (M68K && MAC) || PPC_PMAC
775 This driver supports the Zilog z85C30 serial ports found on
777 Say Y or M if you want to be able to these serial ports.
779 config SERIAL_PMACZILOG_TTYS
780 bool "Use ttySn device nodes for Zilog z85c30"
781 depends on SERIAL_PMACZILOG
783 The pmac_zilog driver for the z85C30 chip on many powermacs
784 historically used the device numbers for /dev/ttySn. The
785 8250 serial port driver also uses these numbers, which means
786 the two drivers being unable to coexist; you could not use
787 both z85C30 and 8250 type ports at the same time.
789 If this option is not selected, the pmac_zilog driver will
790 use the device numbers allocated for /dev/ttyPZn. This allows
791 the pmac_zilog and 8250 drivers to co-exist, but may cause
792 existing userspace setups to break. Programs that need to
793 access the built-in serial ports on powermacs will need to
794 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
796 If you enable this option, any z85c30 ports in the system will
797 be registered as ttyS0 onwards as in the past, and you will be
798 unable to use the 8250 module for PCMCIA or other 16C550-style
801 Say N unless you need the z85c30 ports on your (Power)Mac
802 to appear as /dev/ttySn.
804 config SERIAL_PMACZILOG_CONSOLE
805 bool "Console on Mac or PowerMac z85c30 serial port"
806 depends on SERIAL_PMACZILOG=y
807 select SERIAL_CORE_CONSOLE
809 If you would like to be able to use the z85c30 serial port
810 on your (Power)Mac as the console, you can do so by answering
814 tristate "CPM SCC/SMC serial port support"
815 depends on CPM2 || CPM1
818 This driver supports the SCC and SMC serial ports on Motorola
819 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
821 config SERIAL_CPM_CONSOLE
822 bool "Support for console on CPM SCC/SMC serial port"
823 depends on SERIAL_CPM=y
824 select SERIAL_CORE_CONSOLE
826 Say Y here if you wish to use a SCC or SMC CPM UART as the system
827 console (the system console is the device which receives all kernel
828 messages and warnings and which allows logins in single user mode).
830 Even if you say Y here, the currently visible framebuffer console
831 (/dev/tty0) will still be used as the system console by default, but
832 you can alter that using a kernel command line option such as
833 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
834 your boot loader (lilo or loadlin) about how to pass options to the
835 kernel at boot time.)
837 config SERIAL_SGI_L1_CONSOLE
838 bool "SGI Altix L1 serial console support"
839 depends on IA64_GENERIC || IA64_SGI_SN2
841 select SERIAL_CORE_CONSOLE
843 If you have an SGI Altix and you would like to use the system
844 controller serial port as your console (you want this!),
845 say Y. Otherwise, say N.
848 tristate "Microchip PIC32 serial support"
849 depends on MACH_PIC32
852 If you have a PIC32, this driver supports the serial ports.
854 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
855 to use a serial port as a console, this must be included in kernel and
858 config SERIAL_PIC32_CONSOLE
859 bool "PIC32 serial console support"
860 depends on SERIAL_PIC32
861 select SERIAL_CORE_CONSOLE
863 If you have a PIC32, this driver supports the putting a console on one
866 Say Y to use the PIC32 console, otherwise say N.
868 config SERIAL_MPC52xx
869 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
870 depends on PPC_MPC52xx || PPC_MPC512x
873 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
874 like to use them, you must answer Y or M to this option. Note that
875 for use as console, it must be included in kernel and not as a
878 config SERIAL_MPC52xx_CONSOLE
879 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
880 depends on SERIAL_MPC52xx=y
881 select SERIAL_CORE_CONSOLE
883 Select this options if you'd like to use one of the PSC serial port
884 of the Freescale MPC52xx family as a console.
886 config SERIAL_MPC52xx_CONSOLE_BAUD
887 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
888 depends on SERIAL_MPC52xx_CONSOLE=y
891 Select the MPC52xx console baud rate.
892 This value is only used if the bootloader doesn't pass in the
896 tristate "IBM Multiport Serial Adapter"
897 depends on PCI && PPC_PSERIES
901 This driver is for a family of multiport serial adapters
902 including 2 port RVX, 2 port internal modem, 4 port internal
903 modem and a split 1 port RVX and 1 port internal modem.
905 This driver can also be built as a module. If so, the module
909 bool "TMPTX39XX/49XX SIO support"
910 depends on HAS_TXX9_SERIAL
914 config HAS_TXX9_SERIAL
917 config SERIAL_TXX9_NR_UARTS
918 int "Maximum number of TMPTX39XX/49XX SIO ports"
919 depends on SERIAL_TXX9
922 config SERIAL_TXX9_CONSOLE
923 bool "TMPTX39XX/49XX SIO Console support"
924 depends on SERIAL_TXX9=y
925 select SERIAL_CORE_CONSOLE
927 config SERIAL_TXX9_STDSERIAL
928 bool "TX39XX/49XX SIO act as standard serial"
929 depends on !SERIAL_8250 && SERIAL_TXX9
932 tristate "NEC VR4100 series Serial Interface Unit support"
933 depends on CPU_VR41XX
936 If you have a NEC VR4100 series processor and you want to use
937 Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
938 (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
940 config SERIAL_VR41XX_CONSOLE
941 bool "Enable NEC VR4100 series Serial Interface Unit console"
942 depends on SERIAL_VR41XX=y
943 select SERIAL_CORE_CONSOLE
945 If you have a NEC VR4100 series processor and you want to use
946 a console on a serial port, say Y. Otherwise, say N.
949 tristate "Digi International NEO and Classic PCI Support"
953 This is a driver for Digi International's Neo and Classic series
954 of cards which provide multiple serial ports. You would need
955 something like this to connect more than two modems to your Linux
956 box, for instance in order to become a dial-in server. This driver
957 supports PCI boards only.
959 If you have a card like this, say Y here, otherwise say N.
961 To compile this driver as a module, choose M here: the
962 module will be called jsm.
964 config SERIAL_SGI_IOC4
965 tristate "SGI IOC4 controller serial support"
966 depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC4
969 If you have an SGI Altix with an IOC4 based Base IO card
970 and wish to use the serial ports on this card, say Y.
973 config SERIAL_SGI_IOC3
974 tristate "SGI Altix IOC3 serial support"
975 depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC3
978 If you have an SGI Altix with an IOC3 serial card,
979 say Y or M. Otherwise, say N.
982 tristate "MSM on-chip serial port support"
986 config SERIAL_MSM_CONSOLE
987 bool "MSM serial console support"
988 depends on SERIAL_MSM=y
989 select SERIAL_CORE_CONSOLE
990 select SERIAL_EARLYCON
992 config SERIAL_QCOM_GENI
993 tristate "QCOM on-chip GENI based serial port support"
994 depends on ARCH_QCOM || COMPILE_TEST
995 depends on QCOM_GENI_SE
998 config SERIAL_QCOM_GENI_CONSOLE
999 bool "QCOM GENI Serial Console support"
1000 depends on SERIAL_QCOM_GENI=y
1001 select SERIAL_CORE_CONSOLE
1002 select SERIAL_EARLYCON
1004 Serial console driver for Qualcomm Technologies Inc's GENI based
1007 config SERIAL_VT8500
1008 bool "VIA VT8500 on-chip serial port support"
1009 depends on ARCH_VT8500
1012 config SERIAL_VT8500_CONSOLE
1013 bool "VIA VT8500 serial console support"
1014 depends on SERIAL_VT8500=y
1015 select SERIAL_CORE_CONSOLE
1018 tristate "NetX serial port support"
1019 depends on ARCH_NETX
1022 If you have a machine based on a Hilscher NetX SoC you
1023 can enable its onboard serial port by enabling this option.
1025 To compile this driver as a module, choose M here: the
1026 module will be called netx-serial.
1028 config SERIAL_NETX_CONSOLE
1029 bool "Console on NetX serial port"
1030 depends on SERIAL_NETX=y
1031 select SERIAL_CORE_CONSOLE
1033 If you have enabled the serial port on the Hilscher NetX SoC
1034 you can make it the console by answering Y to this option.
1037 tristate "OMAP serial port support"
1038 depends on ARCH_OMAP2PLUS
1041 If you have a machine based on an Texas Instruments OMAP CPU you
1042 can enable its onboard serial ports by enabling this option.
1044 By enabling this option you take advantage of dma feature available
1045 with the omap-serial driver. DMA support can be enabled from platform
1048 config SERIAL_OMAP_CONSOLE
1049 bool "Console on OMAP serial port"
1050 depends on SERIAL_OMAP=y
1051 select SERIAL_CORE_CONSOLE
1053 Select this option if you would like to use omap serial port as
1056 Even if you say Y here, the currently visible virtual console
1057 (/dev/tty0) will still be used as the system console by default, but
1058 you can alter that using a kernel command line option such as
1059 "console=ttyOx". (Try "man bootparam" or see the documentation of
1060 your boot loader about how to pass options to the kernel at
1063 config SERIAL_LANTIQ
1064 bool "Lantiq serial driver"
1067 select SERIAL_CORE_CONSOLE
1068 select SERIAL_EARLYCON
1070 Support for console and UART on Lantiq SoCs.
1073 tristate "Freescale QUICC Engine serial port support"
1074 depends on QUICC_ENGINE
1079 This driver supports the QE serial ports on Freescale embedded
1080 PowerPC that contain a QUICC Engine.
1082 config SERIAL_SCCNXP
1083 tristate "SCCNXP serial port support"
1086 This selects support for an advanced UART from NXP (Philips).
1087 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1088 SC28L202, SCC68681 and SCC68692.
1090 config SERIAL_SCCNXP_CONSOLE
1091 bool "Console on SCCNXP serial port"
1092 depends on SERIAL_SCCNXP=y
1093 select SERIAL_CORE_CONSOLE
1095 Support for console on SCCNXP serial ports.
1097 config SERIAL_SC16IS7XX_CORE
1100 config SERIAL_SC16IS7XX
1101 tristate "SC16IS7xx serial support"
1103 depends on (SPI_MASTER && !I2C) || I2C
1105 This selects support for SC16IS7xx serial ports.
1106 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1107 SC16IS760 and SC16IS762. Select supported buses using options below.
1109 config SERIAL_SC16IS7XX_I2C
1110 bool "SC16IS7xx for I2C interface"
1111 depends on SERIAL_SC16IS7XX
1113 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1114 select REGMAP_I2C if I2C
1117 Enable SC16IS7xx driver on I2C bus,
1118 If required say y, and say n to i2c if not required,
1119 Enabled by default to support oldconfig.
1120 You must select at least one bus for the driver to be built.
1122 config SERIAL_SC16IS7XX_SPI
1123 bool "SC16IS7xx for spi interface"
1124 depends on SERIAL_SC16IS7XX
1125 depends on SPI_MASTER
1126 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1127 select REGMAP_SPI if SPI_MASTER
1129 Enable SC16IS7xx driver on SPI bus,
1130 If required say y, and say n to spi if not required,
1131 This is additional support to exsisting driver.
1132 You must select at least one bus for the driver to be built.
1134 config SERIAL_TIMBERDALE
1135 tristate "Support for timberdale UART"
1137 depends on X86_32 || COMPILE_TEST
1139 Add support for UART controller on timberdale.
1141 config SERIAL_BCM63XX
1142 tristate "Broadcom BCM63xx/BCM33xx UART support"
1144 depends on MIPS || ARM || COMPILE_TEST
1146 This enables the driver for the onchip UART core found on
1147 the following chipsets:
1149 BCM33xx (cable modem)
1150 BCM63xx/BCM63xxx (DSL)
1152 BCM7xxx (STB) - DOCSIS console
1154 config SERIAL_BCM63XX_CONSOLE
1155 bool "Console on BCM63xx serial port"
1156 depends on SERIAL_BCM63XX=y
1157 select SERIAL_CORE_CONSOLE
1158 select SERIAL_EARLYCON
1160 If you have enabled the serial port on the BCM63xx CPU
1161 you can make it the console by answering Y to this option.
1163 config SERIAL_GRLIB_GAISLER_APBUART
1164 tristate "GRLIB APBUART serial support"
1165 depends on OF && SPARC
1168 Add support for the GRLIB APBUART serial port.
1170 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1171 bool "Console on GRLIB APBUART serial port"
1172 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1173 select SERIAL_CORE_CONSOLE
1175 Support for running a console on the GRLIB APBUART
1177 config SERIAL_ALTERA_JTAGUART
1178 tristate "Altera JTAG UART support"
1181 This driver supports the Altera JTAG UART port.
1183 config SERIAL_ALTERA_JTAGUART_CONSOLE
1184 bool "Altera JTAG UART console support"
1185 depends on SERIAL_ALTERA_JTAGUART=y
1186 select SERIAL_CORE_CONSOLE
1187 select SERIAL_EARLYCON
1189 Enable a Altera JTAG UART port to be the system console.
1191 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1192 bool "Bypass output when no connection"
1193 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1194 select SERIAL_CORE_CONSOLE
1196 Bypass console output and keep going even if there is no
1197 JTAG terminal connection with the host.
1199 config SERIAL_ALTERA_UART
1200 tristate "Altera UART support"
1203 This driver supports the Altera softcore UART port.
1205 config SERIAL_ALTERA_UART_MAXPORTS
1206 int "Maximum number of Altera UART ports"
1207 depends on SERIAL_ALTERA_UART
1210 This setting lets you define the maximum number of the Altera
1211 UART ports. The usual default varies from board to board, and
1212 this setting is a way of catering for that.
1214 config SERIAL_ALTERA_UART_BAUDRATE
1215 int "Default baudrate for Altera UART ports"
1216 depends on SERIAL_ALTERA_UART
1219 This setting lets you define what the default baudrate is for the
1220 Altera UART ports. The usual default varies from board to board,
1221 and this setting is a way of catering for that.
1223 config SERIAL_ALTERA_UART_CONSOLE
1224 bool "Altera UART console support"
1225 depends on SERIAL_ALTERA_UART=y
1226 select SERIAL_CORE_CONSOLE
1227 select SERIAL_EARLYCON
1229 Enable a Altera UART port to be the system console.
1231 config SERIAL_IFX6X60
1232 tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)"
1233 depends on GPIOLIB || COMPILE_TEST
1234 depends on SPI && HAS_DMA
1236 Support for the IFX6x60 modem devices on Intel MID platforms.
1238 config SERIAL_PCH_UART
1239 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1240 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1243 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1244 which is an IOH(Input/Output Hub) for x86 embedded processor.
1245 Enabling PCH_DMA, this PCH UART works as DMA mode.
1247 This driver also can be used for LAPIS Semiconductor IOH(Input/
1248 Output Hub), ML7213, ML7223 and ML7831.
1249 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1250 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1251 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1252 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1254 config SERIAL_PCH_UART_CONSOLE
1255 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1256 depends on SERIAL_PCH_UART=y
1257 select SERIAL_CORE_CONSOLE
1259 Say Y here if you wish to use the PCH UART as the system console
1260 (the system console is the device which receives all kernel messages and
1261 warnings and which allows logins in single user mode).
1263 config SERIAL_MXS_AUART
1264 tristate "MXS AUART support"
1266 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1268 select SERIAL_MCTRL_GPIO if GPIOLIB
1270 This driver supports the MXS and Alphascale ASM9260 Application
1273 config SERIAL_MXS_AUART_CONSOLE
1274 bool "MXS AUART console support"
1275 depends on SERIAL_MXS_AUART=y
1276 select SERIAL_CORE_CONSOLE
1278 Enable a MXS AUART port to be the system console.
1280 config SERIAL_XILINX_PS_UART
1281 tristate "Cadence (Xilinx Zynq) UART support"
1285 This driver supports the Cadence UART. It is found e.g. in Xilinx
1288 config SERIAL_XILINX_PS_UART_CONSOLE
1289 bool "Cadence UART console support"
1290 depends on SERIAL_XILINX_PS_UART=y
1291 select SERIAL_CORE_CONSOLE
1292 select SERIAL_EARLYCON
1294 Enable a Cadence UART port to be the system console.
1296 config SERIAL_AR933X
1297 tristate "AR933X serial port support"
1298 depends on HAVE_CLK && SOC_AR933X
1301 If you have an Atheros AR933X SOC based board and want to use the
1302 built-in UART of the SoC, say Y to this option.
1304 To compile this driver as a module, choose M here: the
1305 module will be called ar933x_uart.
1307 config SERIAL_AR933X_CONSOLE
1308 bool "Console on AR933X serial port"
1309 depends on SERIAL_AR933X=y
1310 select SERIAL_CORE_CONSOLE
1312 Enable a built-in UART port of the AR933X to be the system console.
1314 config SERIAL_AR933X_NR_UARTS
1315 int "Maximum number of AR933X serial ports"
1316 depends on SERIAL_AR933X
1319 Set this to the number of serial ports you want the driver
1322 config SERIAL_EFM32_UART
1323 tristate "EFM32 UART/USART port"
1324 depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
1327 This driver support the USART and UART ports on
1328 Energy Micro's efm32 SoCs.
1330 config SERIAL_MPS2_UART_CONSOLE
1331 bool "MPS2 UART console support"
1332 depends on SERIAL_MPS2_UART
1333 select SERIAL_CORE_CONSOLE
1334 select SERIAL_EARLYCON
1336 config SERIAL_MPS2_UART
1337 bool "MPS2 UART port"
1338 depends on ARCH_MPS2 || COMPILE_TEST
1341 This driver support the UART ports on ARM MPS2.
1343 config SERIAL_EFM32_UART_CONSOLE
1344 bool "EFM32 UART/USART console support"
1345 depends on SERIAL_EFM32_UART=y
1346 select SERIAL_CORE_CONSOLE
1349 tristate "ARC UART driver support"
1352 Driver for on-chip UART for ARC(Synopsys) for the legacy
1353 FPGA Boards (ML50x/ARCAngel4)
1355 config SERIAL_ARC_CONSOLE
1356 bool "Console on ARC UART"
1357 depends on SERIAL_ARC=y
1358 select SERIAL_CORE_CONSOLE
1359 select SERIAL_EARLYCON
1361 Enable system Console on ARC UART
1363 config SERIAL_ARC_NR_PORTS
1364 int "Number of ARC UART ports"
1365 depends on SERIAL_ARC
1369 Set this to the number of serial ports you want the driver
1373 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1377 This driver supports the Comtrol RocketPort EXPRESS and
1378 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1379 These adapters use a "RocketPort 2" ASIC that is not compatible
1380 with the original RocketPort driver (CONFIG_ROCKETPORT).
1382 To compile this driver as a module, choose M here: the
1383 module will be called rp2.
1385 If you want to compile this driver into the kernel, say Y here. If
1386 you don't have a suitable RocketPort card installed, say N.
1388 config SERIAL_RP2_NR_UARTS
1389 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1390 depends on SERIAL_RP2
1393 If multiple cards are present, the default limit of 32 ports may
1394 need to be increased.
1396 config SERIAL_FSL_LPUART
1397 tristate "Freescale lpuart serial port support"
1401 Support for the on-chip lpuart on some Freescale SOCs.
1403 config SERIAL_FSL_LPUART_CONSOLE
1404 bool "Console on Freescale lpuart serial port"
1405 depends on SERIAL_FSL_LPUART=y
1406 select SERIAL_CORE_CONSOLE
1407 select SERIAL_EARLYCON
1409 If you have enabled the lpuart serial port on the Freescale SoCs,
1410 you can make it the console by answering Y to this option.
1412 config SERIAL_CONEXANT_DIGICOLOR
1413 tristate "Conexant Digicolor CX92xxx USART serial port support"
1417 Support for the on-chip USART on Conexant Digicolor SoCs.
1419 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1420 bool "Console on Conexant Digicolor serial port"
1421 depends on SERIAL_CONEXANT_DIGICOLOR=y
1422 select SERIAL_CORE_CONSOLE
1424 If you have enabled the USART serial port on Conexant Digicolor
1425 SoCs, you can make it the console by answering Y to this option.
1427 config SERIAL_ST_ASC
1428 tristate "ST ASC serial port support"
1430 depends on ARM || COMPILE_TEST
1432 This driver is for the on-chip Asychronous Serial Controller on
1433 STMicroelectronics STi SoCs.
1434 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1435 It support all industry standard baud rates.
1439 config SERIAL_ST_ASC_CONSOLE
1440 bool "Support for console on ST ASC"
1441 depends on SERIAL_ST_ASC=y
1442 select SERIAL_CORE_CONSOLE
1444 config SERIAL_MEN_Z135
1445 tristate "MEN 16z135 Support"
1449 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1452 This driver can also be build as a module. If so, the module will be called
1456 tristate "Support for Spreadtrum serial"
1457 depends on ARCH_SPRD
1460 This enables the driver for the Spreadtrum's serial.
1462 config SERIAL_SPRD_CONSOLE
1463 bool "Spreadtrum UART console support"
1464 depends on SERIAL_SPRD=y
1465 select SERIAL_CORE_CONSOLE
1466 select SERIAL_EARLYCON
1468 Support for early debug console using Spreadtrum's serial. This enables
1469 the console before standard serial driver is probed. This is enabled
1470 with "earlycon" on the kernel command line. The console is
1471 enabled when early_param is processed.
1474 tristate "STMicroelectronics STM32 serial port support"
1477 depends on ARCH_STM32 || COMPILE_TEST
1479 This driver is for the on-chip Serial Controller on
1480 STMicroelectronics STM32 MCUs.
1481 USART supports Rx & Tx functionality.
1482 It support all industry standard baud rates.
1486 config SERIAL_STM32_CONSOLE
1487 bool "Support for console on STM32"
1488 depends on SERIAL_STM32=y
1489 select SERIAL_CORE_CONSOLE
1491 config SERIAL_MVEBU_UART
1492 bool "Marvell EBU serial port support"
1493 depends on ARCH_MVEBU || COMPILE_TEST
1496 This driver is for Marvell EBU SoC's UART. If you have a machine
1497 based on the Armada-3700 SoC and wish to use the on-board serial
1502 config SERIAL_MVEBU_CONSOLE
1503 bool "Console on Marvell EBU serial port"
1504 depends on SERIAL_MVEBU_UART
1505 select SERIAL_CORE_CONSOLE
1506 select SERIAL_EARLYCON
1509 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1510 (the system console is the device which receives all kernel messages
1511 and warnings and which allows logins in single user mode)
1515 tristate "Actions Semi Owl serial port support"
1516 depends on ARCH_ACTIONS || COMPILE_TEST
1519 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1520 Say 'Y' here if you wish to use the on-board serial port.
1523 config SERIAL_OWL_CONSOLE
1524 bool "Console on Actions Semi Owl serial port"
1525 depends on SERIAL_OWL=y
1526 select SERIAL_CORE_CONSOLE
1527 select SERIAL_EARLYCON
1530 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1531 as the system console.
1535 config SERIAL_MCTRL_GPIO