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"
23 depends on ARM_AMBA || COMPILE_TEST
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 || COMPILE_TEST
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 || ARCH_APPLE || COMPILE_TEST
242 Support for the on-chip UARTs on the Samsung
243 S3C24xx/S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
244 /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
245 these ports, depending on how the serial port pins are configured.
246 Choose Y/M here only if you build for such SoC.
248 config SERIAL_SAMSUNG_UARTS_4
250 depends on SERIAL_SAMSUNG
251 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
253 Internal node for the common case of 4 Samsung compatible UARTs
255 config SERIAL_SAMSUNG_UARTS
257 depends on SERIAL_SAMSUNG
258 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
261 Select the number of available UART ports for the Samsung S3C
264 config SERIAL_SAMSUNG_CONSOLE
265 bool "Support for console on Samsung SoC serial port"
266 depends on SERIAL_SAMSUNG=y
267 select SERIAL_CORE_CONSOLE
268 select SERIAL_EARLYCON
270 Allow selection of the S3C24XX on-board serial ports for use as
273 Even if you say Y here, the currently visible virtual console
274 (/dev/tty0) will still be used as the system console by default, but
275 you can alter that using a kernel command line option such as
276 "console=ttySACx". (Try "man bootparam" or see the documentation of
277 your boot loader about how to pass options to the kernel at
281 tristate "NVIDIA Tegra20/30 SoC serial controller"
282 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
285 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
286 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
287 provide all of these ports, depending on how the serial port
288 are enabled). This driver uses the APB DMA to achieve higher baudrate
289 and better performance.
291 config SERIAL_TEGRA_TCU
292 tristate "NVIDIA Tegra Combined UART"
294 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
297 Support for the mailbox-based TCU (Tegra Combined UART) serial port.
298 TCU is a virtual serial port that allows multiplexing multiple data
299 streams into a single hardware serial port.
301 config SERIAL_TEGRA_TCU_CONSOLE
302 bool "Support for console on a Tegra TCU serial port"
303 depends on SERIAL_TEGRA_TCU=y
304 select SERIAL_CORE_CONSOLE
307 If you say Y here, it will be possible to use a the Tegra TCU as the
308 system console (the system console is the device which receives all
309 kernel messages and warnings and which allows logins in single user
314 config SERIAL_MAX3100
315 tristate "MAX3100 support"
321 config SERIAL_MAX310X
322 tristate "MAX310X support"
323 depends on SPI_MASTER
325 select REGMAP_SPI if SPI_MASTER
327 This selects support for an advanced UART from Maxim (Dallas).
328 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
329 Each IC contains 128 words each of receive and transmit FIFO
330 that can be controlled through I2C or high-speed SPI.
332 Say Y here if you want to support this ICs.
335 bool "DECstation DZ serial driver"
336 depends on MACH_DECSTATION && 32BIT
340 DZ11-family serial controllers for DECstations and VAXstations,
341 including the DC7085, M7814, and M7819.
343 config SERIAL_DZ_CONSOLE
344 bool "Support console on DECstation DZ serial driver"
345 depends on SERIAL_DZ=y
346 select SERIAL_CORE_CONSOLE
349 If you say Y here, it will be possible to use a serial port as the
350 system console (the system console is the device which receives all
351 kernel messages and warnings and which allows logins in single user
354 Note that the firmware uses ttyS3 as the serial console on
355 DECstations that use this driver.
360 tristate "DECstation Z85C30 serial support"
361 depends on MACH_DECSTATION
365 Support for the Zilog 85C350 serial communications controller used
366 for serial ports in newer DECstation systems. These include the
367 DECsystem 5900 and all models of the DECstation and DECsystem 5000
368 systems except from model 200.
370 If unsure, say Y. To compile this driver as a module, choose M here:
371 the module will be called zs.
373 config SERIAL_ZS_CONSOLE
374 bool "Support for console on a DECstation Z85C30 serial port"
375 depends on SERIAL_ZS=y
376 select SERIAL_CORE_CONSOLE
379 If you say Y here, it will be possible to use a serial port as the
380 system console (the system console is the device which receives all
381 kernel messages and warnings and which allows logins in single user
384 Note that the firmware uses ttyS1 as the serial console on the
385 Maxine and ttyS3 on the others using this driver.
390 tristate "DC21285 serial port support"
391 depends on FOOTBRIDGE
394 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
395 PCI bridge you can enable its onboard serial port by enabling this
398 config SERIAL_21285_CONSOLE
399 bool "Console on DC21285 serial port"
400 depends on SERIAL_21285=y
401 select SERIAL_CORE_CONSOLE
403 If you have enabled the serial port on the 21285 footbridge you can
404 make it the console by answering Y to this option.
406 Even if you say Y here, the currently visible virtual console
407 (/dev/tty0) will still be used as the system console by default, but
408 you can alter that using a kernel command line option such as
409 "console=ttyFB". (Try "man bootparam" or see the documentation of
410 your boot loader (lilo or loadlin) about how to pass options to the
411 kernel at boot time.)
414 bool "PXA serial port support (DEPRECATED)"
415 depends on ARCH_PXA || ARCH_MMP
417 select SERIAL_8250_PXA if SERIAL_8250=y
418 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
420 If you have a machine based on an Intel XScale PXA2xx CPU you
421 can enable its onboard serial ports by enabling this option.
423 Unless you have a specific need, you should use SERIAL_8250_PXA
426 config SERIAL_PXA_NON8250
428 depends on !SERIAL_8250
430 config SERIAL_PXA_CONSOLE
431 bool "Console on PXA serial port (DEPRECATED)"
432 depends on SERIAL_PXA
433 select SERIAL_CORE_CONSOLE
434 select SERIAL_8250_CONSOLE if SERIAL_8250=y
436 If you have enabled the serial port on the Intel XScale PXA
437 CPU you can make it the console by answering Y to this option.
439 Even if you say Y here, the currently visible virtual console
440 (/dev/tty0) will still be used as the system console by default, but
441 you can alter that using a kernel command line option such as
442 "console=ttySA0". (Try "man bootparam" or see the documentation of
443 your boot loader (lilo or loadlin) about how to pass options to the
444 kernel at boot time.)
446 Unless you have a specific need, you should use SERIAL_8250_PXA
447 and SERIAL_8250_CONSOLE instead of this.
450 bool "SA1100 serial port support"
451 depends on ARCH_SA1100
453 select SERIAL_MCTRL_GPIO if GPIOLIB
455 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
456 can enable its onboard serial port by enabling this option.
457 Please read <file:Documentation/arm/sa1100/serial_uart.rst> for further
460 config SERIAL_SA1100_CONSOLE
461 bool "Console on SA1100 serial port"
462 depends on SERIAL_SA1100
463 select SERIAL_CORE_CONSOLE
465 If you have enabled the serial port on the SA1100/SA1110 StrongARM
466 CPU you can make it the console by answering Y to this option.
468 Even if you say Y here, the currently visible virtual console
469 (/dev/tty0) will still be used as the system console by default, but
470 you can alter that using a kernel command line option such as
471 "console=ttySA0". (Try "man bootparam" or see the documentation of
472 your boot loader (lilo or loadlin) about how to pass options to the
473 kernel at boot time.)
476 tristate "IMX serial port support"
477 depends on ARCH_MXC || COMPILE_TEST
480 select SERIAL_MCTRL_GPIO if GPIOLIB
482 If you have a machine based on a Motorola IMX CPU you
483 can enable its onboard serial port by enabling this option.
485 config SERIAL_IMX_CONSOLE
486 tristate "Console on IMX serial port"
487 depends on SERIAL_IMX
488 select SERIAL_CORE_CONSOLE
490 If you have enabled the serial port on the Freescale IMX
491 CPU you can make it the console by answering Y/M to this option.
493 Even if you say Y/M here, the currently visible virtual console
494 (/dev/tty0) will still be used as the system console by default, but
495 you can alter that using a kernel command line option such as
496 "console=ttymxc0". (Try "man bootparam" or see the documentation of
497 your bootloader about how to pass options to the kernel at boot time.)
499 config SERIAL_IMX_EARLYCON
500 bool "Earlycon on IMX serial port"
501 depends on ARCH_MXC || COMPILE_TEST
504 select SERIAL_EARLYCON
505 select SERIAL_CORE_CONSOLE
506 default y if SERIAL_IMX_CONSOLE
508 If you have enabled the earlycon on the Freescale IMX
509 CPU you can make it the earlycon by answering Y to this option.
511 config SERIAL_UARTLITE
512 tristate "Xilinx uartlite serial port support"
516 Say Y here if you want to use the Xilinx uartlite serial controller.
518 To compile this driver as a module, choose M here: the
519 module will be called uartlite.
521 config SERIAL_UARTLITE_CONSOLE
522 bool "Support for console on Xilinx uartlite serial port"
523 depends on SERIAL_UARTLITE=y
524 select SERIAL_CORE_CONSOLE
525 select SERIAL_EARLYCON
527 Say Y here if you wish to use a Xilinx uartlite as the system
528 console (the system console is the device which receives all kernel
529 messages and warnings and which allows logins in single user mode).
531 config SERIAL_UARTLITE_NR_UARTS
532 int "Maximum number of uartlite serial ports"
533 depends on SERIAL_UARTLITE
537 Set this to the number of uartlites in your system, or the number
538 you think you might implement.
540 config SERIAL_SUNCORE
544 select SERIAL_CORE_CONSOLE
547 config SERIAL_SUNZILOG
548 tristate "Sun Zilog8530 serial support"
551 This driver supports the Zilog8530 serial ports found on many Sparc
552 systems. Say Y or M if you want to be able to these serial ports.
554 config SERIAL_SUNZILOG_CONSOLE
555 bool "Console on Sun Zilog8530 serial port"
556 depends on SERIAL_SUNZILOG=y
558 If you would like to be able to use the Zilog8530 serial port
559 on your Sparc system as the console, you can do so by answering
563 tristate "Sun SU serial support"
564 depends on SPARC && PCI
566 This driver supports the 8250 serial ports that run the keyboard and
567 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
568 to these serial ports.
570 config SERIAL_SUNSU_CONSOLE
571 bool "Console on Sun SU serial port"
572 depends on SERIAL_SUNSU=y
574 If you would like to be able to use the SU serial port
575 on your Sparc system as the console, you can do so by answering
579 tristate "Serial MUX support"
584 Saying Y here will enable the hardware MUX serial driver for
585 the Nova, K class systems and D class with a 'remote control card'.
586 The hardware MUX is not 8250/16550 compatible therefore the
587 /dev/ttyB0 device is shared between the Serial MUX and the PDC
588 software console. The following steps need to be completed to use
591 1. create the device entry (mknod /dev/ttyB0 c 11 0)
592 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
593 3. Add device ttyB0 to /etc/securetty (if you want to log on as
594 root on this console.)
595 4. Change the kernel command console parameter to: console=ttyB0
597 config SERIAL_MUX_CONSOLE
598 bool "Support for console on serial MUX"
599 depends on SERIAL_MUX=y
600 select SERIAL_CORE_CONSOLE
604 bool "PDC software console support"
605 depends on PARISC && !SERIAL_MUX && VT
607 Saying Y here will enable the software based PDC console to be
608 used as the system console. This is useful for machines in
609 which the hardware based console has not been written yet. The
610 following steps must be completed to use the PDC console:
612 1. create the device entry (mknod /dev/ttyB0 c 11 0)
613 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
614 3. Add device ttyB0 to /etc/securetty (if you want to log on as
615 root on this console.)
616 4. Change the kernel command console parameter to: console=ttyB0
619 tristate "Sun Siemens SAB82532 serial support"
620 depends on SPARC && PCI
622 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
623 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
626 config SERIAL_SUNSAB_CONSOLE
627 bool "Console on Sun Siemens SAB82532 serial port"
628 depends on SERIAL_SUNSAB=y
630 If you would like to be able to use the SAB82532 serial port
631 on your Sparc system as the console, you can do so by answering
635 bool "Sun4v Hypervisor Console support"
638 This driver supports the console device found on SUN4V Sparc
639 systems. Say Y if you want to be able to use this device.
641 config SERIAL_IP22_ZILOG
642 tristate "SGI Zilog8530 serial support"
643 depends on SGI_HAS_ZILOG
646 This driver supports the Zilog8530 serial ports found on SGI
647 systems. Say Y or M if you want to be able to these serial ports.
649 config SERIAL_IP22_ZILOG_CONSOLE
650 bool "Console on SGI Zilog8530 serial port"
651 depends on SERIAL_IP22_ZILOG=y
652 select SERIAL_CORE_CONSOLE
655 tristate "SuperH SCI(F) serial port support"
656 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
658 select SERIAL_MCTRL_GPIO if GPIOLIB
660 config SERIAL_SH_SCI_NR_UARTS
661 int "Maximum number of SCI(F) serial ports" if EXPERT
664 depends on SERIAL_SH_SCI
666 default "10" if SUPERH
667 default "18" if ARCH_RENESAS
670 config SERIAL_SH_SCI_CONSOLE
671 bool "Support for console on SuperH SCI(F)" if EXPERT
672 depends on SERIAL_SH_SCI=y
673 select SERIAL_CORE_CONSOLE
676 config SERIAL_SH_SCI_EARLYCON
677 bool "Support for early console on SuperH SCI(F)" if EXPERT
678 depends on SERIAL_SH_SCI=y
679 select SERIAL_CORE_CONSOLE
680 select SERIAL_EARLYCON
681 default ARCH_RENESAS || H8300
683 config SERIAL_SH_SCI_DMA
684 bool "DMA support" if EXPERT
685 depends on SERIAL_SH_SCI && DMA_ENGINE
688 config SERIAL_HS_LPC32XX
689 tristate "LPC32XX high speed serial port support"
690 depends on ARCH_LPC32XX || COMPILE_TEST
694 Support for the LPC32XX high speed serial ports (up to 900kbps).
695 Those are UARTs completely different from the Standard UARTs on the
697 Choose M or Y here to build this driver.
699 config SERIAL_HS_LPC32XX_CONSOLE
700 bool "Enable LPC32XX high speed UART serial console"
701 depends on SERIAL_HS_LPC32XX=y
702 select SERIAL_CORE_CONSOLE
704 If you would like to be able to use one of the high speed serial
705 ports on the LPC32XX as the console, you can do so by answering
711 config SERIAL_CORE_CONSOLE
718 bool "Coldfire serial support"
722 This serial driver supports the Freescale Coldfire serial ports.
724 config SERIAL_MCF_BAUDRATE
725 int "Default baudrate for Coldfire serial ports"
726 depends on SERIAL_MCF
729 This setting lets you define what the default baudrate is for the
730 ColdFire serial ports. The usual default varies from board to board,
731 and this setting is a way of catering for that.
733 config SERIAL_MCF_CONSOLE
734 bool "Coldfire serial console support"
735 depends on SERIAL_MCF
736 select SERIAL_CORE_CONSOLE
738 Enable a ColdFire internal serial port to be the system console.
740 config SERIAL_PMACZILOG
741 tristate "Mac or PowerMac z85c30 ESCC support"
742 depends on (M68K && MAC) || PPC_PMAC
745 This driver supports the Zilog z85C30 serial ports found on
747 Say Y or M if you want to be able to these serial ports.
749 config SERIAL_PMACZILOG_TTYS
750 bool "Use ttySn device nodes for Zilog z85c30"
751 depends on SERIAL_PMACZILOG
753 The pmac_zilog driver for the z85C30 chip on many powermacs
754 historically used the device numbers for /dev/ttySn. The
755 8250 serial port driver also uses these numbers, which means
756 the two drivers being unable to coexist; you could not use
757 both z85C30 and 8250 type ports at the same time.
759 If this option is not selected, the pmac_zilog driver will
760 use the device numbers allocated for /dev/ttyPZn. This allows
761 the pmac_zilog and 8250 drivers to co-exist, but may cause
762 existing userspace setups to break. Programs that need to
763 access the built-in serial ports on powermacs will need to
764 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
766 If you enable this option, any z85c30 ports in the system will
767 be registered as ttyS0 onwards as in the past, and you will be
768 unable to use the 8250 module for PCMCIA or other 16C550-style
771 Say N unless you need the z85c30 ports on your (Power)Mac
772 to appear as /dev/ttySn.
774 config SERIAL_PMACZILOG_CONSOLE
775 bool "Console on Mac or PowerMac z85c30 serial port"
776 depends on SERIAL_PMACZILOG=y
777 select SERIAL_CORE_CONSOLE
779 If you would like to be able to use the z85c30 serial port
780 on your (Power)Mac as the console, you can do so by answering
784 tristate "CPM SCC/SMC serial port support"
785 depends on CPM2 || CPM1
788 This driver supports the SCC and SMC serial ports on Motorola
789 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
791 config SERIAL_CPM_CONSOLE
792 bool "Support for console on CPM SCC/SMC serial port"
793 depends on SERIAL_CPM=y
794 select SERIAL_CORE_CONSOLE
796 Say Y here if you wish to use a SCC or SMC CPM UART as the system
797 console (the system console is the device which receives all kernel
798 messages and warnings and which allows logins in single user mode).
800 Even if you say Y here, the currently visible framebuffer console
801 (/dev/tty0) will still be used as the system console by default, but
802 you can alter that using a kernel command line option such as
803 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
804 your boot loader (lilo or loadlin) about how to pass options to the
805 kernel at boot time.)
808 tristate "Microchip PIC32 serial support"
809 depends on MACH_PIC32
812 If you have a PIC32, this driver supports the serial ports.
814 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
815 to use a serial port as a console, this must be included in kernel and
818 config SERIAL_PIC32_CONSOLE
819 bool "PIC32 serial console support"
820 depends on SERIAL_PIC32
821 select SERIAL_CORE_CONSOLE
823 If you have a PIC32, this driver supports the putting a console on one
826 Say Y to use the PIC32 console, otherwise say N.
828 config SERIAL_MPC52xx
829 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
830 depends on PPC_MPC52xx || PPC_MPC512x
833 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
834 like to use them, you must answer Y or M to this option. Note that
835 for use as console, it must be included in kernel and not as a
838 config SERIAL_MPC52xx_CONSOLE
839 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
840 depends on SERIAL_MPC52xx=y
841 select SERIAL_CORE_CONSOLE
843 Select this options if you'd like to use one of the PSC serial port
844 of the Freescale MPC52xx family as a console.
846 config SERIAL_MPC52xx_CONSOLE_BAUD
847 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
848 depends on SERIAL_MPC52xx_CONSOLE=y
851 Select the MPC52xx console baud rate.
852 This value is only used if the bootloader doesn't pass in the
856 tristate "IBM Multiport Serial Adapter"
858 depends on PPC_PSERIES || COMPILE_TEST
862 This driver is for a family of multiport serial adapters
863 including 2 port RVX, 2 port internal modem, 4 port internal
864 modem and a split 1 port RVX and 1 port internal modem.
866 This driver can also be built as a module. If so, the module
870 bool "TMPTX39XX/49XX SIO support"
871 depends on HAS_TXX9_SERIAL
875 config HAS_TXX9_SERIAL
878 config SERIAL_TXX9_NR_UARTS
879 int "Maximum number of TMPTX39XX/49XX SIO ports"
880 depends on SERIAL_TXX9
883 config SERIAL_TXX9_CONSOLE
884 bool "TMPTX39XX/49XX SIO Console support"
885 depends on SERIAL_TXX9=y
886 select SERIAL_CORE_CONSOLE
888 config SERIAL_TXX9_STDSERIAL
889 bool "TX39XX/49XX SIO act as standard serial"
890 depends on !SERIAL_8250 && SERIAL_TXX9
893 tristate "NEC VR4100 series Serial Interface Unit support"
894 depends on CPU_VR41XX
897 If you have a NEC VR4100 series processor and you want to use
898 Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
899 (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
901 config SERIAL_VR41XX_CONSOLE
902 bool "Enable NEC VR4100 series Serial Interface Unit console"
903 depends on SERIAL_VR41XX=y
904 select SERIAL_CORE_CONSOLE
906 If you have a NEC VR4100 series processor and you want to use
907 a console on a serial port, say Y. Otherwise, say N.
910 tristate "Digi International NEO and Classic PCI Support"
914 This is a driver for Digi International's Neo and Classic series
915 of cards which provide multiple serial ports. You would need
916 something like this to connect more than two modems to your Linux
917 box, for instance in order to become a dial-in server. This driver
918 supports PCI boards only.
920 If you have a card like this, say Y here, otherwise say N.
922 To compile this driver as a module, choose M here: the
923 module will be called jsm.
926 tristate "MSM on-chip serial port support"
927 depends on ARCH_QCOM || COMPILE_TEST
930 config SERIAL_MSM_CONSOLE
931 bool "MSM serial console support"
932 depends on SERIAL_MSM=y
933 select SERIAL_CORE_CONSOLE
934 select SERIAL_EARLYCON
936 config SERIAL_QCOM_GENI
937 tristate "QCOM on-chip GENI based serial port support"
938 depends on ARCH_QCOM || COMPILE_TEST
939 depends on QCOM_GENI_SE
942 config SERIAL_QCOM_GENI_CONSOLE
943 bool "QCOM GENI Serial Console support"
944 depends on SERIAL_QCOM_GENI
945 select SERIAL_CORE_CONSOLE
946 select SERIAL_EARLYCON
948 Serial console driver for Qualcomm Technologies Inc's GENI based
952 bool "VIA VT8500 on-chip serial port support"
953 depends on ARCH_VT8500 || COMPILE_TEST
956 config SERIAL_VT8500_CONSOLE
957 bool "VIA VT8500 serial console support"
958 depends on SERIAL_VT8500=y
959 select SERIAL_CORE_CONSOLE
962 tristate "OMAP serial port support"
963 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
966 If you have a machine based on an Texas Instruments OMAP CPU you
967 can enable its onboard serial ports by enabling this option.
969 By enabling this option you take advantage of dma feature available
970 with the omap-serial driver. DMA support can be enabled from platform
973 config SERIAL_OMAP_CONSOLE
974 bool "Console on OMAP serial port"
975 depends on SERIAL_OMAP=y
976 select SERIAL_CORE_CONSOLE
978 Select this option if you would like to use omap serial port as
981 Even if you say Y here, the currently visible virtual console
982 (/dev/tty0) will still be used as the system console by default, but
983 you can alter that using a kernel command line option such as
984 "console=ttyOx". (Try "man bootparam" or see the documentation of
985 your boot loader about how to pass options to the kernel at
989 tristate "SiFive UART support"
993 Select this option if you are building a kernel for a device that
994 contains a SiFive UART IP block. This type of UART is present on
995 SiFive FU540 SoCs, among others.
997 config SERIAL_SIFIVE_CONSOLE
998 bool "Console on SiFive UART"
999 depends on SERIAL_SIFIVE=y
1000 select SERIAL_CORE_CONSOLE
1001 select SERIAL_EARLYCON
1003 Select this option if you would like to use a SiFive UART as the
1006 Even if you say Y here, the currently visible virtual console
1007 (/dev/tty0) will still be used as the system console by default, but
1008 you can alter that using a kernel command line option such as
1009 "console=ttySIFx". (Try "man bootparam" or see the documentation of
1010 your boot loader about how to pass options to the kernel at
1013 config SERIAL_LANTIQ
1014 tristate "Lantiq serial driver"
1015 depends on (LANTIQ || X86) || COMPILE_TEST
1018 Support for UART on Lantiq and Intel SoCs.
1019 To compile this driver as a module, select M here. The
1020 module will be called lantiq.
1022 config SERIAL_LANTIQ_CONSOLE
1023 bool "Console on Lantiq UART"
1024 depends on SERIAL_LANTIQ=y
1025 select SERIAL_CORE_CONSOLE
1026 select SERIAL_EARLYCON
1028 Select this option if you would like to use a Lantiq UART as the
1032 tristate "Freescale QUICC Engine serial port support"
1033 depends on QUICC_ENGINE
1037 This driver supports the QE serial ports on Freescale embedded
1038 PowerPC that contain a QUICC Engine.
1040 config SERIAL_SCCNXP
1041 tristate "SCCNXP serial port support"
1044 This selects support for an advanced UART from NXP (Philips).
1045 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1046 SC28L202, SCC68681 and SCC68692.
1048 config SERIAL_SCCNXP_CONSOLE
1049 bool "Console on SCCNXP serial port"
1050 depends on SERIAL_SCCNXP=y
1051 select SERIAL_CORE_CONSOLE
1053 Support for console on SCCNXP serial ports.
1055 config SERIAL_SC16IS7XX_CORE
1058 config SERIAL_SC16IS7XX
1059 tristate "SC16IS7xx serial support"
1061 depends on (SPI_MASTER && !I2C) || I2C
1063 This selects support for SC16IS7xx serial ports.
1064 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1065 SC16IS760 and SC16IS762. Select supported buses using options below.
1067 config SERIAL_SC16IS7XX_I2C
1068 bool "SC16IS7xx for I2C interface"
1069 depends on SERIAL_SC16IS7XX
1071 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1072 select REGMAP_I2C if I2C
1075 Enable SC16IS7xx driver on I2C bus,
1076 If required say y, and say n to i2c if not required,
1077 Enabled by default to support oldconfig.
1078 You must select at least one bus for the driver to be built.
1080 config SERIAL_SC16IS7XX_SPI
1081 bool "SC16IS7xx for spi interface"
1082 depends on SERIAL_SC16IS7XX
1083 depends on SPI_MASTER
1084 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1085 select REGMAP_SPI if SPI_MASTER
1087 Enable SC16IS7xx driver on SPI bus,
1088 If required say y, and say n to spi if not required,
1089 This is additional support to existing driver.
1090 You must select at least one bus for the driver to be built.
1092 config SERIAL_TIMBERDALE
1093 tristate "Support for timberdale UART"
1095 depends on X86_32 || COMPILE_TEST
1097 Add support for UART controller on timberdale.
1099 config SERIAL_BCM63XX
1100 tristate "Broadcom BCM63xx/BCM33xx UART support"
1102 depends on COMMON_CLK
1104 This enables the driver for the onchip UART core found on
1105 the following chipsets:
1107 BCM33xx (cable modem)
1108 BCM63xx/BCM63xxx (DSL)
1110 BCM7xxx (STB) - DOCSIS console
1112 config SERIAL_BCM63XX_CONSOLE
1113 bool "Console on BCM63xx serial port"
1114 depends on SERIAL_BCM63XX=y
1115 select SERIAL_CORE_CONSOLE
1116 select SERIAL_EARLYCON
1118 If you have enabled the serial port on the BCM63xx CPU
1119 you can make it the console by answering Y to this option.
1121 config SERIAL_GRLIB_GAISLER_APBUART
1122 tristate "GRLIB APBUART serial support"
1123 depends on OF && SPARC
1126 Add support for the GRLIB APBUART serial port.
1128 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1129 bool "Console on GRLIB APBUART serial port"
1130 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1131 select SERIAL_CORE_CONSOLE
1133 Support for running a console on the GRLIB APBUART
1135 config SERIAL_ALTERA_JTAGUART
1136 tristate "Altera JTAG UART support"
1139 This driver supports the Altera JTAG UART port.
1141 config SERIAL_ALTERA_JTAGUART_CONSOLE
1142 bool "Altera JTAG UART console support"
1143 depends on SERIAL_ALTERA_JTAGUART=y
1144 select SERIAL_CORE_CONSOLE
1145 select SERIAL_EARLYCON
1147 Enable a Altera JTAG UART port to be the system console.
1149 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1150 bool "Bypass output when no connection"
1151 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1152 select SERIAL_CORE_CONSOLE
1154 Bypass console output and keep going even if there is no
1155 JTAG terminal connection with the host.
1157 config SERIAL_ALTERA_UART
1158 tristate "Altera UART support"
1161 This driver supports the Altera softcore UART port.
1163 config SERIAL_ALTERA_UART_MAXPORTS
1164 int "Maximum number of Altera UART ports"
1165 depends on SERIAL_ALTERA_UART
1168 This setting lets you define the maximum number of the Altera
1169 UART ports. The usual default varies from board to board, and
1170 this setting is a way of catering for that.
1172 config SERIAL_ALTERA_UART_BAUDRATE
1173 int "Default baudrate for Altera UART ports"
1174 depends on SERIAL_ALTERA_UART
1177 This setting lets you define what the default baudrate is for the
1178 Altera UART ports. The usual default varies from board to board,
1179 and this setting is a way of catering for that.
1181 config SERIAL_ALTERA_UART_CONSOLE
1182 bool "Altera UART console support"
1183 depends on SERIAL_ALTERA_UART=y
1184 select SERIAL_CORE_CONSOLE
1185 select SERIAL_EARLYCON
1187 Enable a Altera UART port to be the system console.
1189 config SERIAL_PCH_UART
1190 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1191 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1194 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1195 which is an IOH(Input/Output Hub) for x86 embedded processor.
1196 Enabling PCH_DMA, this PCH UART works as DMA mode.
1198 This driver also can be used for LAPIS Semiconductor IOH(Input/
1199 Output Hub), ML7213, ML7223 and ML7831.
1200 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1201 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1202 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1203 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1205 config SERIAL_PCH_UART_CONSOLE
1206 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1207 depends on SERIAL_PCH_UART=y
1208 select SERIAL_CORE_CONSOLE
1210 Say Y here if you wish to use the PCH UART as the system console
1211 (the system console is the device which receives all kernel messages and
1212 warnings and which allows logins in single user mode).
1214 config SERIAL_MXS_AUART
1215 tristate "MXS AUART support"
1216 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1218 select SERIAL_MCTRL_GPIO if GPIOLIB
1220 This driver supports the MXS and Alphascale ASM9260 Application
1223 config SERIAL_MXS_AUART_CONSOLE
1224 bool "MXS AUART console support"
1225 depends on SERIAL_MXS_AUART=y
1226 select SERIAL_CORE_CONSOLE
1228 Enable a MXS AUART port to be the system console.
1230 config SERIAL_XILINX_PS_UART
1231 tristate "Cadence (Xilinx Zynq) UART support"
1235 This driver supports the Cadence UART. It is found e.g. in Xilinx
1238 config SERIAL_XILINX_PS_UART_CONSOLE
1239 bool "Cadence UART console support"
1240 depends on SERIAL_XILINX_PS_UART=y
1241 select SERIAL_CORE_CONSOLE
1242 select SERIAL_EARLYCON
1244 Enable a Cadence UART port to be the system console.
1246 config SERIAL_AR933X
1247 tristate "AR933X serial port support"
1248 depends on HAVE_CLK && ATH79
1250 select SERIAL_MCTRL_GPIO if GPIOLIB
1252 If you have an Atheros AR933X SOC based board and want to use the
1253 built-in UART of the SoC, say Y to this option.
1255 To compile this driver as a module, choose M here: the
1256 module will be called ar933x_uart.
1258 config SERIAL_AR933X_CONSOLE
1259 bool "Console on AR933X serial port"
1260 depends on SERIAL_AR933X=y
1261 select SERIAL_CORE_CONSOLE
1263 Enable a built-in UART port of the AR933X to be the system console.
1265 config SERIAL_AR933X_NR_UARTS
1266 int "Maximum number of AR933X serial ports"
1267 depends on SERIAL_AR933X
1270 Set this to the number of serial ports you want the driver
1273 config SERIAL_MPS2_UART_CONSOLE
1274 bool "MPS2 UART console support"
1275 depends on SERIAL_MPS2_UART
1276 select SERIAL_CORE_CONSOLE
1277 select SERIAL_EARLYCON
1279 config SERIAL_MPS2_UART
1280 bool "MPS2 UART port"
1281 depends on ARCH_MPS2 || COMPILE_TEST
1284 This driver support the UART ports on ARM MPS2.
1287 tristate "ARC UART driver support"
1290 Driver for on-chip UART for ARC(Synopsys) for the legacy
1291 FPGA Boards (ML50x/ARCAngel4)
1293 config SERIAL_ARC_CONSOLE
1294 bool "Console on ARC UART"
1295 depends on SERIAL_ARC=y
1296 select SERIAL_CORE_CONSOLE
1297 select SERIAL_EARLYCON
1299 Enable system Console on ARC UART
1301 config SERIAL_ARC_NR_PORTS
1302 int "Number of ARC UART ports"
1303 depends on SERIAL_ARC
1307 Set this to the number of serial ports you want the driver
1311 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1315 This driver supports the Comtrol RocketPort EXPRESS and
1316 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1317 These adapters use a "RocketPort 2" ASIC that is not compatible
1318 with the original RocketPort driver (CONFIG_ROCKETPORT).
1320 To compile this driver as a module, choose M here: the
1321 module will be called rp2.
1323 If you want to compile this driver into the kernel, say Y here. If
1324 you don't have a suitable RocketPort card installed, say N.
1326 config SERIAL_RP2_NR_UARTS
1327 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1328 depends on SERIAL_RP2
1331 If multiple cards are present, the default limit of 32 ports may
1332 need to be increased.
1334 config SERIAL_FSL_LPUART
1335 tristate "Freescale lpuart serial port support"
1339 Support for the on-chip lpuart on some Freescale SOCs.
1341 config SERIAL_FSL_LPUART_CONSOLE
1342 bool "Console on Freescale lpuart serial port"
1343 depends on SERIAL_FSL_LPUART=y
1344 select SERIAL_CORE_CONSOLE
1345 select SERIAL_EARLYCON
1347 If you have enabled the lpuart serial port on the Freescale SoCs,
1348 you can make it the console by answering Y to this option.
1350 config SERIAL_FSL_LINFLEXUART
1351 tristate "Freescale LINFlexD UART serial port support"
1355 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1357 config SERIAL_FSL_LINFLEXUART_CONSOLE
1358 bool "Console on Freescale LINFlexD UART serial port"
1359 depends on SERIAL_FSL_LINFLEXUART=y
1360 select SERIAL_CORE_CONSOLE
1361 select SERIAL_EARLYCON
1363 If you have enabled the LINFlexD UART serial port on the Freescale
1364 SoCs, you can make it the console by answering Y to this option.
1366 config SERIAL_CONEXANT_DIGICOLOR
1367 tristate "Conexant Digicolor CX92xxx USART serial port support"
1371 Support for the on-chip USART on Conexant Digicolor SoCs.
1373 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1374 bool "Console on Conexant Digicolor serial port"
1375 depends on SERIAL_CONEXANT_DIGICOLOR=y
1376 select SERIAL_CORE_CONSOLE
1378 If you have enabled the USART serial port on Conexant Digicolor
1379 SoCs, you can make it the console by answering Y to this option.
1381 config SERIAL_ST_ASC
1382 tristate "ST ASC serial port support"
1384 depends on ARM || COMPILE_TEST
1386 This driver is for the on-chip Asynchronous Serial Controller on
1387 STMicroelectronics STi SoCs.
1388 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1389 It support all industry standard baud rates.
1393 config SERIAL_ST_ASC_CONSOLE
1394 bool "Support for console on ST ASC"
1395 depends on SERIAL_ST_ASC=y
1396 select SERIAL_CORE_CONSOLE
1398 config SERIAL_MEN_Z135
1399 tristate "MEN 16z135 Support"
1403 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1406 This driver can also be build as a module. If so, the module will be called
1410 tristate "Support for Spreadtrum serial"
1412 depends on COMMON_CLK
1414 This enables the driver for the Spreadtrum's serial.
1416 config SERIAL_SPRD_CONSOLE
1417 bool "Spreadtrum UART console support"
1418 depends on SERIAL_SPRD=y
1419 select SERIAL_CORE_CONSOLE
1420 select SERIAL_EARLYCON
1422 Support for early debug console using Spreadtrum's serial. This enables
1423 the console before standard serial driver is probed. This is enabled
1424 with "earlycon" on the kernel command line. The console is
1425 enabled when early_param is processed.
1428 tristate "STMicroelectronics STM32 serial port support"
1430 depends on ARCH_STM32 || COMPILE_TEST
1431 select SERIAL_MCTRL_GPIO if GPIOLIB
1433 This driver is for the on-chip Serial Controller on
1434 STMicroelectronics STM32 MCUs.
1435 USART supports Rx & Tx functionality.
1436 It support all industry standard baud rates.
1440 config SERIAL_STM32_CONSOLE
1441 bool "Support for console on STM32"
1442 depends on SERIAL_STM32=y
1443 select SERIAL_CORE_CONSOLE
1445 config SERIAL_MVEBU_UART
1446 bool "Marvell EBU serial port support"
1447 depends on ARCH_MVEBU || COMPILE_TEST
1450 This driver is for Marvell EBU SoC's UART. If you have a machine
1451 based on the Armada-3700 SoC and wish to use the on-board serial
1456 config SERIAL_MVEBU_CONSOLE
1457 bool "Console on Marvell EBU serial port"
1458 depends on SERIAL_MVEBU_UART
1459 select SERIAL_CORE_CONSOLE
1460 select SERIAL_EARLYCON
1463 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1464 (the system console is the device which receives all kernel messages
1465 and warnings and which allows logins in single user mode)
1469 tristate "Actions Semi Owl serial port support"
1470 depends on ARCH_ACTIONS || COMPILE_TEST
1473 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1474 Say 'Y' here if you wish to use the on-board serial port.
1477 config SERIAL_OWL_CONSOLE
1478 bool "Console on Actions Semi Owl serial port"
1479 depends on SERIAL_OWL=y
1480 select SERIAL_CORE_CONSOLE
1481 select SERIAL_EARLYCON
1484 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1485 as the system console.
1488 bool "RDA Micro serial port support"
1489 depends on ARCH_RDA || COMPILE_TEST
1492 This driver is for RDA8810PL SoC's UART.
1493 Say 'Y' here if you wish to use the on-board serial port.
1496 config SERIAL_RDA_CONSOLE
1497 bool "Console on RDA Micro serial port"
1498 depends on SERIAL_RDA=y
1499 select SERIAL_CORE_CONSOLE
1500 select SERIAL_EARLYCON
1503 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1504 console. Only earlycon is implemented currently.
1506 config SERIAL_MILBEAUT_USIO
1507 tristate "Milbeaut USIO/UART serial port support"
1508 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1509 default ARCH_MILBEAUT
1512 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1514 config SERIAL_MILBEAUT_USIO_PORTS
1515 int "Maximum number of CSIO/UART ports (1-8)"
1517 depends on SERIAL_MILBEAUT_USIO
1520 config SERIAL_MILBEAUT_USIO_CONSOLE
1521 bool "Support for console on MILBEAUT USIO/UART serial port"
1522 depends on SERIAL_MILBEAUT_USIO=y
1524 select SERIAL_CORE_CONSOLE
1525 select SERIAL_EARLYCON
1527 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1528 SoCs as the system console (the system console is the device which
1529 receives all kernel messages and warnings and which allows logins in
1532 config SERIAL_LITEUART
1533 tristate "LiteUART serial port support"
1534 depends on HAS_IOMEM
1535 depends on OF || COMPILE_TEST
1536 depends on LITEX || COMPILE_TEST
1539 This driver is for the FPGA-based LiteUART serial controller from LiteX
1542 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1545 config SERIAL_LITEUART_MAX_PORTS
1546 int "Maximum number of LiteUART ports"
1547 depends on SERIAL_LITEUART
1550 Set this to the maximum number of serial ports you want the driver
1553 config SERIAL_LITEUART_CONSOLE
1554 bool "LiteUART serial port console support"
1555 depends on SERIAL_LITEUART=y
1556 select SERIAL_CORE_CONSOLE
1557 select SERIAL_EARLYCON
1559 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1560 controller from LiteX SoC builder as the system console
1561 (the system console is the device which receives all kernel messages
1562 and warnings and which allows logins in single user mode).
1567 config SERIAL_MCTRL_GPIO