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 S3C24XX series CPUs,
243 providing /dev/ttySAC0, 1 and 2 (note, some machines may not
244 provide all of these ports, depending on how the serial port
247 config SERIAL_SAMSUNG_UARTS_4
249 depends on SERIAL_SAMSUNG
250 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
252 Internal node for the common case of 4 Samsung compatible UARTs
254 config SERIAL_SAMSUNG_UARTS
256 depends on SERIAL_SAMSUNG
257 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
260 Select the number of available UART ports for the Samsung S3C
263 config SERIAL_SAMSUNG_CONSOLE
264 bool "Support for console on Samsung SoC serial port"
265 depends on SERIAL_SAMSUNG=y
266 select SERIAL_CORE_CONSOLE
267 select SERIAL_EARLYCON
269 Allow selection of the S3C24XX on-board serial ports for use as
272 Even if you say Y here, the currently visible virtual console
273 (/dev/tty0) will still be used as the system console by default, but
274 you can alter that using a kernel command line option such as
275 "console=ttySACx". (Try "man bootparam" or see the documentation of
276 your boot loader about how to pass options to the kernel at
280 tristate "NVIDIA Tegra20/30 SoC serial controller"
281 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
284 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
285 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
286 provide all of these ports, depending on how the serial port
287 are enabled). This driver uses the APB DMA to achieve higher baudrate
288 and better performance.
290 config SERIAL_TEGRA_TCU
291 tristate "NVIDIA Tegra Combined UART"
293 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
296 Support for the mailbox-based TCU (Tegra Combined UART) serial port.
297 TCU is a virtual serial port that allows multiplexing multiple data
298 streams into a single hardware serial port.
300 config SERIAL_TEGRA_TCU_CONSOLE
301 bool "Support for console on a Tegra TCU serial port"
302 depends on SERIAL_TEGRA_TCU=y
303 select SERIAL_CORE_CONSOLE
306 If you say Y here, it will be possible to use a the Tegra TCU as the
307 system console (the system console is the device which receives all
308 kernel messages and warnings and which allows logins in single user
313 config SERIAL_MAX3100
314 tristate "MAX3100 support"
320 config SERIAL_MAX310X
321 tristate "MAX310X support"
322 depends on SPI_MASTER
324 select REGMAP_SPI if SPI_MASTER
326 This selects support for an advanced UART from Maxim (Dallas).
327 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
328 Each IC contains 128 words each of receive and transmit FIFO
329 that can be controlled through I2C or high-speed SPI.
331 Say Y here if you want to support this ICs.
334 bool "DECstation DZ serial driver"
335 depends on MACH_DECSTATION && 32BIT
339 DZ11-family serial controllers for DECstations and VAXstations,
340 including the DC7085, M7814, and M7819.
342 config SERIAL_DZ_CONSOLE
343 bool "Support console on DECstation DZ serial driver"
344 depends on SERIAL_DZ=y
345 select SERIAL_CORE_CONSOLE
348 If you say Y here, it will be possible to use a serial port as the
349 system console (the system console is the device which receives all
350 kernel messages and warnings and which allows logins in single user
353 Note that the firmware uses ttyS3 as the serial console on
354 DECstations that use this driver.
359 tristate "DECstation Z85C30 serial support"
360 depends on MACH_DECSTATION
364 Support for the Zilog 85C350 serial communications controller used
365 for serial ports in newer DECstation systems. These include the
366 DECsystem 5900 and all models of the DECstation and DECsystem 5000
367 systems except from model 200.
369 If unsure, say Y. To compile this driver as a module, choose M here:
370 the module will be called zs.
372 config SERIAL_ZS_CONSOLE
373 bool "Support for console on a DECstation Z85C30 serial port"
374 depends on SERIAL_ZS=y
375 select SERIAL_CORE_CONSOLE
378 If you say Y here, it will be possible to use a serial port as the
379 system console (the system console is the device which receives all
380 kernel messages and warnings and which allows logins in single user
383 Note that the firmware uses ttyS1 as the serial console on the
384 Maxine and ttyS3 on the others using this driver.
389 tristate "DC21285 serial port support"
390 depends on FOOTBRIDGE
393 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
394 PCI bridge you can enable its onboard serial port by enabling this
397 config SERIAL_21285_CONSOLE
398 bool "Console on DC21285 serial port"
399 depends on SERIAL_21285=y
400 select SERIAL_CORE_CONSOLE
402 If you have enabled the serial port on the 21285 footbridge you can
403 make it the console by answering Y to this option.
405 Even if you say Y here, the currently visible virtual console
406 (/dev/tty0) will still be used as the system console by default, but
407 you can alter that using a kernel command line option such as
408 "console=ttyFB". (Try "man bootparam" or see the documentation of
409 your boot loader (lilo or loadlin) about how to pass options to the
410 kernel at boot time.)
413 bool "PXA serial port support (DEPRECATED)"
414 depends on ARCH_PXA || ARCH_MMP
416 select SERIAL_8250_PXA if SERIAL_8250=y
417 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
419 If you have a machine based on an Intel XScale PXA2xx CPU you
420 can enable its onboard serial ports by enabling this option.
422 Unless you have a specific need, you should use SERIAL_8250_PXA
425 config SERIAL_PXA_NON8250
427 depends on !SERIAL_8250
429 config SERIAL_PXA_CONSOLE
430 bool "Console on PXA serial port (DEPRECATED)"
431 depends on SERIAL_PXA
432 select SERIAL_CORE_CONSOLE
433 select SERIAL_8250_CONSOLE if SERIAL_8250=y
435 If you have enabled the serial port on the Intel XScale PXA
436 CPU you can make it the console by answering Y to this option.
438 Even if you say Y here, the currently visible virtual console
439 (/dev/tty0) will still be used as the system console by default, but
440 you can alter that using a kernel command line option such as
441 "console=ttySA0". (Try "man bootparam" or see the documentation of
442 your boot loader (lilo or loadlin) about how to pass options to the
443 kernel at boot time.)
445 Unless you have a specific need, you should use SERIAL_8250_PXA
446 and SERIAL_8250_CONSOLE instead of this.
449 bool "SA1100 serial port support"
450 depends on ARCH_SA1100
452 select SERIAL_MCTRL_GPIO if GPIOLIB
454 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
455 can enable its onboard serial port by enabling this option.
456 Please read <file:Documentation/arm/sa1100/serial_uart.rst> for further
459 config SERIAL_SA1100_CONSOLE
460 bool "Console on SA1100 serial port"
461 depends on SERIAL_SA1100
462 select SERIAL_CORE_CONSOLE
464 If you have enabled the serial port on the SA1100/SA1110 StrongARM
465 CPU you can make it the console by answering Y to this option.
467 Even if you say Y here, the currently visible virtual console
468 (/dev/tty0) will still be used as the system console by default, but
469 you can alter that using a kernel command line option such as
470 "console=ttySA0". (Try "man bootparam" or see the documentation of
471 your boot loader (lilo or loadlin) about how to pass options to the
472 kernel at boot time.)
475 tristate "IMX serial port support"
476 depends on ARCH_MXC || COMPILE_TEST
479 select SERIAL_MCTRL_GPIO if GPIOLIB
481 If you have a machine based on a Motorola IMX CPU you
482 can enable its onboard serial port by enabling this option.
484 config SERIAL_IMX_CONSOLE
485 tristate "Console on IMX serial port"
486 depends on SERIAL_IMX
487 select SERIAL_CORE_CONSOLE
489 If you have enabled the serial port on the Freescale IMX
490 CPU you can make it the console by answering Y/M to this option.
492 Even if you say Y/M here, the currently visible virtual console
493 (/dev/tty0) will still be used as the system console by default, but
494 you can alter that using a kernel command line option such as
495 "console=ttymxc0". (Try "man bootparam" or see the documentation of
496 your bootloader about how to pass options to the kernel at boot time.)
498 config SERIAL_IMX_EARLYCON
499 bool "Earlycon on IMX serial port"
500 depends on ARCH_MXC || COMPILE_TEST
503 select SERIAL_EARLYCON
504 select SERIAL_CORE_CONSOLE
505 default y if SERIAL_IMX_CONSOLE
507 If you have enabled the earlycon on the Freescale IMX
508 CPU you can make it the earlycon by answering Y to this option.
510 config SERIAL_UARTLITE
511 tristate "Xilinx uartlite serial port support"
515 Say Y here if you want to use the Xilinx uartlite serial controller.
517 To compile this driver as a module, choose M here: the
518 module will be called uartlite.
520 config SERIAL_UARTLITE_CONSOLE
521 bool "Support for console on Xilinx uartlite serial port"
522 depends on SERIAL_UARTLITE=y
523 select SERIAL_CORE_CONSOLE
524 select SERIAL_EARLYCON
526 Say Y here if you wish to use a Xilinx uartlite as the system
527 console (the system console is the device which receives all kernel
528 messages and warnings and which allows logins in single user mode).
530 config SERIAL_UARTLITE_NR_UARTS
531 int "Maximum number of uartlite serial ports"
532 depends on SERIAL_UARTLITE
536 Set this to the number of uartlites in your system, or the number
537 you think you might implement.
539 config SERIAL_SUNCORE
543 select SERIAL_CORE_CONSOLE
546 config SERIAL_SUNZILOG
547 tristate "Sun Zilog8530 serial support"
550 This driver supports the Zilog8530 serial ports found on many Sparc
551 systems. Say Y or M if you want to be able to these serial ports.
553 config SERIAL_SUNZILOG_CONSOLE
554 bool "Console on Sun Zilog8530 serial port"
555 depends on SERIAL_SUNZILOG=y
557 If you would like to be able to use the Zilog8530 serial port
558 on your Sparc system as the console, you can do so by answering
562 tristate "Sun SU serial support"
563 depends on SPARC && PCI
565 This driver supports the 8250 serial ports that run the keyboard and
566 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
567 to these serial ports.
569 config SERIAL_SUNSU_CONSOLE
570 bool "Console on Sun SU serial port"
571 depends on SERIAL_SUNSU=y
573 If you would like to be able to use the SU serial port
574 on your Sparc system as the console, you can do so by answering
578 tristate "Serial MUX support"
583 Saying Y here will enable the hardware MUX serial driver for
584 the Nova, K class systems and D class with a 'remote control card'.
585 The hardware MUX is not 8250/16550 compatible therefore the
586 /dev/ttyB0 device is shared between the Serial MUX and the PDC
587 software console. The following steps need to be completed to use
590 1. create the device entry (mknod /dev/ttyB0 c 11 0)
591 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
592 3. Add device ttyB0 to /etc/securetty (if you want to log on as
593 root on this console.)
594 4. Change the kernel command console parameter to: console=ttyB0
596 config SERIAL_MUX_CONSOLE
597 bool "Support for console on serial MUX"
598 depends on SERIAL_MUX=y
599 select SERIAL_CORE_CONSOLE
603 bool "PDC software console support"
604 depends on PARISC && !SERIAL_MUX && VT
606 Saying Y here will enable the software based PDC console to be
607 used as the system console. This is useful for machines in
608 which the hardware based console has not been written yet. The
609 following steps must be completed to use the PDC console:
611 1. create the device entry (mknod /dev/ttyB0 c 11 0)
612 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
613 3. Add device ttyB0 to /etc/securetty (if you want to log on as
614 root on this console.)
615 4. Change the kernel command console parameter to: console=ttyB0
618 tristate "Sun Siemens SAB82532 serial support"
619 depends on SPARC && PCI
621 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
622 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
625 config SERIAL_SUNSAB_CONSOLE
626 bool "Console on Sun Siemens SAB82532 serial port"
627 depends on SERIAL_SUNSAB=y
629 If you would like to be able to use the SAB82532 serial port
630 on your Sparc system as the console, you can do so by answering
634 bool "Sun4v Hypervisor Console support"
637 This driver supports the console device found on SUN4V Sparc
638 systems. Say Y if you want to be able to use this device.
640 config SERIAL_IP22_ZILOG
641 tristate "SGI Zilog8530 serial support"
642 depends on SGI_HAS_ZILOG
645 This driver supports the Zilog8530 serial ports found on SGI
646 systems. Say Y or M if you want to be able to these serial ports.
648 config SERIAL_IP22_ZILOG_CONSOLE
649 bool "Console on SGI Zilog8530 serial port"
650 depends on SERIAL_IP22_ZILOG=y
651 select SERIAL_CORE_CONSOLE
654 tristate "SuperH SCI(F) serial port support"
655 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
657 select SERIAL_MCTRL_GPIO if GPIOLIB
659 config SERIAL_SH_SCI_NR_UARTS
660 int "Maximum number of SCI(F) serial ports" if EXPERT
663 depends on SERIAL_SH_SCI
665 default "10" if SUPERH
666 default "18" if ARCH_RENESAS
669 config SERIAL_SH_SCI_CONSOLE
670 bool "Support for console on SuperH SCI(F)" if EXPERT
671 depends on SERIAL_SH_SCI=y
672 select SERIAL_CORE_CONSOLE
675 config SERIAL_SH_SCI_EARLYCON
676 bool "Support for early console on SuperH SCI(F)" if EXPERT
677 depends on SERIAL_SH_SCI=y
678 select SERIAL_CORE_CONSOLE
679 select SERIAL_EARLYCON
680 default ARCH_RENESAS || H8300
682 config SERIAL_SH_SCI_DMA
683 bool "DMA support" if EXPERT
684 depends on SERIAL_SH_SCI && DMA_ENGINE
687 config SERIAL_HS_LPC32XX
688 tristate "LPC32XX high speed serial port support"
689 depends on ARCH_LPC32XX || COMPILE_TEST
693 Support for the LPC32XX high speed serial ports (up to 900kbps).
694 Those are UARTs completely different from the Standard UARTs on the
696 Choose M or Y here to build this driver.
698 config SERIAL_HS_LPC32XX_CONSOLE
699 bool "Enable LPC32XX high speed UART serial console"
700 depends on SERIAL_HS_LPC32XX=y
701 select SERIAL_CORE_CONSOLE
703 If you would like to be able to use one of the high speed serial
704 ports on the LPC32XX as the console, you can do so by answering
710 config SERIAL_CORE_CONSOLE
717 bool "Coldfire serial support"
721 This serial driver supports the Freescale Coldfire serial ports.
723 config SERIAL_MCF_BAUDRATE
724 int "Default baudrate for Coldfire serial ports"
725 depends on SERIAL_MCF
728 This setting lets you define what the default baudrate is for the
729 ColdFire serial ports. The usual default varies from board to board,
730 and this setting is a way of catering for that.
732 config SERIAL_MCF_CONSOLE
733 bool "Coldfire serial console support"
734 depends on SERIAL_MCF
735 select SERIAL_CORE_CONSOLE
737 Enable a ColdFire internal serial port to be the system console.
739 config SERIAL_PMACZILOG
740 tristate "Mac or PowerMac z85c30 ESCC support"
741 depends on (M68K && MAC) || PPC_PMAC
744 This driver supports the Zilog z85C30 serial ports found on
746 Say Y or M if you want to be able to these serial ports.
748 config SERIAL_PMACZILOG_TTYS
749 bool "Use ttySn device nodes for Zilog z85c30"
750 depends on SERIAL_PMACZILOG
752 The pmac_zilog driver for the z85C30 chip on many powermacs
753 historically used the device numbers for /dev/ttySn. The
754 8250 serial port driver also uses these numbers, which means
755 the two drivers being unable to coexist; you could not use
756 both z85C30 and 8250 type ports at the same time.
758 If this option is not selected, the pmac_zilog driver will
759 use the device numbers allocated for /dev/ttyPZn. This allows
760 the pmac_zilog and 8250 drivers to co-exist, but may cause
761 existing userspace setups to break. Programs that need to
762 access the built-in serial ports on powermacs will need to
763 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
765 If you enable this option, any z85c30 ports in the system will
766 be registered as ttyS0 onwards as in the past, and you will be
767 unable to use the 8250 module for PCMCIA or other 16C550-style
770 Say N unless you need the z85c30 ports on your (Power)Mac
771 to appear as /dev/ttySn.
773 config SERIAL_PMACZILOG_CONSOLE
774 bool "Console on Mac or PowerMac z85c30 serial port"
775 depends on SERIAL_PMACZILOG=y
776 select SERIAL_CORE_CONSOLE
778 If you would like to be able to use the z85c30 serial port
779 on your (Power)Mac as the console, you can do so by answering
783 tristate "CPM SCC/SMC serial port support"
784 depends on CPM2 || CPM1
787 This driver supports the SCC and SMC serial ports on Motorola
788 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
790 config SERIAL_CPM_CONSOLE
791 bool "Support for console on CPM SCC/SMC serial port"
792 depends on SERIAL_CPM=y
793 select SERIAL_CORE_CONSOLE
795 Say Y here if you wish to use a SCC or SMC CPM UART as the system
796 console (the system console is the device which receives all kernel
797 messages and warnings and which allows logins in single user mode).
799 Even if you say Y here, the currently visible framebuffer console
800 (/dev/tty0) will still be used as the system console by default, but
801 you can alter that using a kernel command line option such as
802 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
803 your boot loader (lilo or loadlin) about how to pass options to the
804 kernel at boot time.)
807 tristate "Microchip PIC32 serial support"
808 depends on MACH_PIC32
811 If you have a PIC32, this driver supports the serial ports.
813 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
814 to use a serial port as a console, this must be included in kernel and
817 config SERIAL_PIC32_CONSOLE
818 bool "PIC32 serial console support"
819 depends on SERIAL_PIC32
820 select SERIAL_CORE_CONSOLE
822 If you have a PIC32, this driver supports the putting a console on one
825 Say Y to use the PIC32 console, otherwise say N.
827 config SERIAL_MPC52xx
828 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
829 depends on PPC_MPC52xx || PPC_MPC512x
832 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
833 like to use them, you must answer Y or M to this option. Note that
834 for use as console, it must be included in kernel and not as a
837 config SERIAL_MPC52xx_CONSOLE
838 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
839 depends on SERIAL_MPC52xx=y
840 select SERIAL_CORE_CONSOLE
842 Select this options if you'd like to use one of the PSC serial port
843 of the Freescale MPC52xx family as a console.
845 config SERIAL_MPC52xx_CONSOLE_BAUD
846 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
847 depends on SERIAL_MPC52xx_CONSOLE=y
850 Select the MPC52xx console baud rate.
851 This value is only used if the bootloader doesn't pass in the
855 tristate "IBM Multiport Serial Adapter"
857 depends on PPC_PSERIES || COMPILE_TEST
861 This driver is for a family of multiport serial adapters
862 including 2 port RVX, 2 port internal modem, 4 port internal
863 modem and a split 1 port RVX and 1 port internal modem.
865 This driver can also be built as a module. If so, the module
869 bool "TMPTX39XX/49XX SIO support"
870 depends on HAS_TXX9_SERIAL
874 config HAS_TXX9_SERIAL
877 config SERIAL_TXX9_NR_UARTS
878 int "Maximum number of TMPTX39XX/49XX SIO ports"
879 depends on SERIAL_TXX9
882 config SERIAL_TXX9_CONSOLE
883 bool "TMPTX39XX/49XX SIO Console support"
884 depends on SERIAL_TXX9=y
885 select SERIAL_CORE_CONSOLE
887 config SERIAL_TXX9_STDSERIAL
888 bool "TX39XX/49XX SIO act as standard serial"
889 depends on !SERIAL_8250 && SERIAL_TXX9
892 tristate "NEC VR4100 series Serial Interface Unit support"
893 depends on CPU_VR41XX
896 If you have a NEC VR4100 series processor and you want to use
897 Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
898 (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
900 config SERIAL_VR41XX_CONSOLE
901 bool "Enable NEC VR4100 series Serial Interface Unit console"
902 depends on SERIAL_VR41XX=y
903 select SERIAL_CORE_CONSOLE
905 If you have a NEC VR4100 series processor and you want to use
906 a console on a serial port, say Y. Otherwise, say N.
909 tristate "Digi International NEO and Classic PCI Support"
913 This is a driver for Digi International's Neo and Classic series
914 of cards which provide multiple serial ports. You would need
915 something like this to connect more than two modems to your Linux
916 box, for instance in order to become a dial-in server. This driver
917 supports PCI boards only.
919 If you have a card like this, say Y here, otherwise say N.
921 To compile this driver as a module, choose M here: the
922 module will be called jsm.
925 tristate "MSM on-chip serial port support"
926 depends on ARCH_QCOM || COMPILE_TEST
929 config SERIAL_MSM_CONSOLE
930 bool "MSM serial console support"
931 depends on SERIAL_MSM=y
932 select SERIAL_CORE_CONSOLE
933 select SERIAL_EARLYCON
935 config SERIAL_QCOM_GENI
936 tristate "QCOM on-chip GENI based serial port support"
937 depends on ARCH_QCOM || COMPILE_TEST
938 depends on QCOM_GENI_SE
941 config SERIAL_QCOM_GENI_CONSOLE
942 bool "QCOM GENI Serial Console support"
943 depends on SERIAL_QCOM_GENI
944 select SERIAL_CORE_CONSOLE
945 select SERIAL_EARLYCON
947 Serial console driver for Qualcomm Technologies Inc's GENI based
951 bool "VIA VT8500 on-chip serial port support"
952 depends on ARCH_VT8500 || COMPILE_TEST
955 config SERIAL_VT8500_CONSOLE
956 bool "VIA VT8500 serial console support"
957 depends on SERIAL_VT8500=y
958 select SERIAL_CORE_CONSOLE
961 tristate "OMAP serial port support"
962 depends on ARCH_OMAP2PLUS || COMPILE_TEST
965 If you have a machine based on an Texas Instruments OMAP CPU you
966 can enable its onboard serial ports by enabling this option.
968 By enabling this option you take advantage of dma feature available
969 with the omap-serial driver. DMA support can be enabled from platform
972 config SERIAL_OMAP_CONSOLE
973 bool "Console on OMAP serial port"
974 depends on SERIAL_OMAP=y
975 select SERIAL_CORE_CONSOLE
977 Select this option if you would like to use omap serial port as
980 Even if you say Y here, the currently visible virtual console
981 (/dev/tty0) will still be used as the system console by default, but
982 you can alter that using a kernel command line option such as
983 "console=ttyOx". (Try "man bootparam" or see the documentation of
984 your boot loader about how to pass options to the kernel at
988 tristate "SiFive UART support"
992 Select this option if you are building a kernel for a device that
993 contains a SiFive UART IP block. This type of UART is present on
994 SiFive FU540 SoCs, among others.
996 config SERIAL_SIFIVE_CONSOLE
997 bool "Console on SiFive UART"
998 depends on SERIAL_SIFIVE=y
999 select SERIAL_CORE_CONSOLE
1000 select SERIAL_EARLYCON
1002 Select this option if you would like to use a SiFive UART as the
1005 Even if you say Y here, the currently visible virtual console
1006 (/dev/tty0) will still be used as the system console by default, but
1007 you can alter that using a kernel command line option such as
1008 "console=ttySIFx". (Try "man bootparam" or see the documentation of
1009 your boot loader about how to pass options to the kernel at
1012 config SERIAL_LANTIQ
1013 tristate "Lantiq serial driver"
1014 depends on (LANTIQ || X86) || COMPILE_TEST
1017 Support for UART on Lantiq and Intel SoCs.
1018 To compile this driver as a module, select M here. The
1019 module will be called lantiq.
1021 config SERIAL_LANTIQ_CONSOLE
1022 bool "Console on Lantiq UART"
1023 depends on SERIAL_LANTIQ=y
1024 select SERIAL_CORE_CONSOLE
1025 select SERIAL_EARLYCON
1027 Select this option if you would like to use a Lantiq UART as the
1031 tristate "Freescale QUICC Engine serial port support"
1032 depends on QUICC_ENGINE
1036 This driver supports the QE serial ports on Freescale embedded
1037 PowerPC that contain a QUICC Engine.
1039 config SERIAL_SCCNXP
1040 tristate "SCCNXP serial port support"
1043 This selects support for an advanced UART from NXP (Philips).
1044 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1045 SC28L202, SCC68681 and SCC68692.
1047 config SERIAL_SCCNXP_CONSOLE
1048 bool "Console on SCCNXP serial port"
1049 depends on SERIAL_SCCNXP=y
1050 select SERIAL_CORE_CONSOLE
1052 Support for console on SCCNXP serial ports.
1054 config SERIAL_SC16IS7XX_CORE
1057 config SERIAL_SC16IS7XX
1058 tristate "SC16IS7xx serial support"
1060 depends on (SPI_MASTER && !I2C) || I2C
1062 This selects support for SC16IS7xx serial ports.
1063 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1064 SC16IS760 and SC16IS762. Select supported buses using options below.
1066 config SERIAL_SC16IS7XX_I2C
1067 bool "SC16IS7xx for I2C interface"
1068 depends on SERIAL_SC16IS7XX
1070 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1071 select REGMAP_I2C if I2C
1074 Enable SC16IS7xx driver on I2C bus,
1075 If required say y, and say n to i2c if not required,
1076 Enabled by default to support oldconfig.
1077 You must select at least one bus for the driver to be built.
1079 config SERIAL_SC16IS7XX_SPI
1080 bool "SC16IS7xx for spi interface"
1081 depends on SERIAL_SC16IS7XX
1082 depends on SPI_MASTER
1083 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1084 select REGMAP_SPI if SPI_MASTER
1086 Enable SC16IS7xx driver on SPI bus,
1087 If required say y, and say n to spi if not required,
1088 This is additional support to existing driver.
1089 You must select at least one bus for the driver to be built.
1091 config SERIAL_TIMBERDALE
1092 tristate "Support for timberdale UART"
1094 depends on X86_32 || COMPILE_TEST
1096 Add support for UART controller on timberdale.
1098 config SERIAL_BCM63XX
1099 tristate "Broadcom BCM63xx/BCM33xx UART support"
1101 depends on COMMON_CLK
1103 This enables the driver for the onchip UART core found on
1104 the following chipsets:
1106 BCM33xx (cable modem)
1107 BCM63xx/BCM63xxx (DSL)
1109 BCM7xxx (STB) - DOCSIS console
1111 config SERIAL_BCM63XX_CONSOLE
1112 bool "Console on BCM63xx serial port"
1113 depends on SERIAL_BCM63XX=y
1114 select SERIAL_CORE_CONSOLE
1115 select SERIAL_EARLYCON
1117 If you have enabled the serial port on the BCM63xx CPU
1118 you can make it the console by answering Y to this option.
1120 config SERIAL_GRLIB_GAISLER_APBUART
1121 tristate "GRLIB APBUART serial support"
1122 depends on OF && SPARC
1125 Add support for the GRLIB APBUART serial port.
1127 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1128 bool "Console on GRLIB APBUART serial port"
1129 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1130 select SERIAL_CORE_CONSOLE
1132 Support for running a console on the GRLIB APBUART
1134 config SERIAL_ALTERA_JTAGUART
1135 tristate "Altera JTAG UART support"
1138 This driver supports the Altera JTAG UART port.
1140 config SERIAL_ALTERA_JTAGUART_CONSOLE
1141 bool "Altera JTAG UART console support"
1142 depends on SERIAL_ALTERA_JTAGUART=y
1143 select SERIAL_CORE_CONSOLE
1144 select SERIAL_EARLYCON
1146 Enable a Altera JTAG UART port to be the system console.
1148 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1149 bool "Bypass output when no connection"
1150 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1151 select SERIAL_CORE_CONSOLE
1153 Bypass console output and keep going even if there is no
1154 JTAG terminal connection with the host.
1156 config SERIAL_ALTERA_UART
1157 tristate "Altera UART support"
1160 This driver supports the Altera softcore UART port.
1162 config SERIAL_ALTERA_UART_MAXPORTS
1163 int "Maximum number of Altera UART ports"
1164 depends on SERIAL_ALTERA_UART
1167 This setting lets you define the maximum number of the Altera
1168 UART ports. The usual default varies from board to board, and
1169 this setting is a way of catering for that.
1171 config SERIAL_ALTERA_UART_BAUDRATE
1172 int "Default baudrate for Altera UART ports"
1173 depends on SERIAL_ALTERA_UART
1176 This setting lets you define what the default baudrate is for the
1177 Altera UART ports. The usual default varies from board to board,
1178 and this setting is a way of catering for that.
1180 config SERIAL_ALTERA_UART_CONSOLE
1181 bool "Altera UART console support"
1182 depends on SERIAL_ALTERA_UART=y
1183 select SERIAL_CORE_CONSOLE
1184 select SERIAL_EARLYCON
1186 Enable a Altera UART port to be the system console.
1188 config SERIAL_PCH_UART
1189 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1190 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1193 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1194 which is an IOH(Input/Output Hub) for x86 embedded processor.
1195 Enabling PCH_DMA, this PCH UART works as DMA mode.
1197 This driver also can be used for LAPIS Semiconductor IOH(Input/
1198 Output Hub), ML7213, ML7223 and ML7831.
1199 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1200 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1201 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1202 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1204 config SERIAL_PCH_UART_CONSOLE
1205 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1206 depends on SERIAL_PCH_UART=y
1207 select SERIAL_CORE_CONSOLE
1209 Say Y here if you wish to use the PCH UART as the system console
1210 (the system console is the device which receives all kernel messages and
1211 warnings and which allows logins in single user mode).
1213 config SERIAL_MXS_AUART
1214 tristate "MXS AUART support"
1215 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1217 select SERIAL_MCTRL_GPIO if GPIOLIB
1219 This driver supports the MXS and Alphascale ASM9260 Application
1222 config SERIAL_MXS_AUART_CONSOLE
1223 bool "MXS AUART console support"
1224 depends on SERIAL_MXS_AUART=y
1225 select SERIAL_CORE_CONSOLE
1227 Enable a MXS AUART port to be the system console.
1229 config SERIAL_XILINX_PS_UART
1230 tristate "Cadence (Xilinx Zynq) UART support"
1234 This driver supports the Cadence UART. It is found e.g. in Xilinx
1237 config SERIAL_XILINX_PS_UART_CONSOLE
1238 bool "Cadence UART console support"
1239 depends on SERIAL_XILINX_PS_UART=y
1240 select SERIAL_CORE_CONSOLE
1241 select SERIAL_EARLYCON
1243 Enable a Cadence UART port to be the system console.
1245 config SERIAL_AR933X
1246 tristate "AR933X serial port support"
1247 depends on HAVE_CLK && ATH79
1249 select SERIAL_MCTRL_GPIO if GPIOLIB
1251 If you have an Atheros AR933X SOC based board and want to use the
1252 built-in UART of the SoC, say Y to this option.
1254 To compile this driver as a module, choose M here: the
1255 module will be called ar933x_uart.
1257 config SERIAL_AR933X_CONSOLE
1258 bool "Console on AR933X serial port"
1259 depends on SERIAL_AR933X=y
1260 select SERIAL_CORE_CONSOLE
1262 Enable a built-in UART port of the AR933X to be the system console.
1264 config SERIAL_AR933X_NR_UARTS
1265 int "Maximum number of AR933X serial ports"
1266 depends on SERIAL_AR933X
1269 Set this to the number of serial ports you want the driver
1272 config SERIAL_MPS2_UART_CONSOLE
1273 bool "MPS2 UART console support"
1274 depends on SERIAL_MPS2_UART
1275 select SERIAL_CORE_CONSOLE
1276 select SERIAL_EARLYCON
1278 config SERIAL_MPS2_UART
1279 bool "MPS2 UART port"
1280 depends on ARCH_MPS2 || COMPILE_TEST
1283 This driver support the UART ports on ARM MPS2.
1286 tristate "ARC UART driver support"
1289 Driver for on-chip UART for ARC(Synopsys) for the legacy
1290 FPGA Boards (ML50x/ARCAngel4)
1292 config SERIAL_ARC_CONSOLE
1293 bool "Console on ARC UART"
1294 depends on SERIAL_ARC=y
1295 select SERIAL_CORE_CONSOLE
1296 select SERIAL_EARLYCON
1298 Enable system Console on ARC UART
1300 config SERIAL_ARC_NR_PORTS
1301 int "Number of ARC UART ports"
1302 depends on SERIAL_ARC
1306 Set this to the number of serial ports you want the driver
1310 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1314 This driver supports the Comtrol RocketPort EXPRESS and
1315 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1316 These adapters use a "RocketPort 2" ASIC that is not compatible
1317 with the original RocketPort driver (CONFIG_ROCKETPORT).
1319 To compile this driver as a module, choose M here: the
1320 module will be called rp2.
1322 If you want to compile this driver into the kernel, say Y here. If
1323 you don't have a suitable RocketPort card installed, say N.
1325 config SERIAL_RP2_NR_UARTS
1326 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1327 depends on SERIAL_RP2
1330 If multiple cards are present, the default limit of 32 ports may
1331 need to be increased.
1333 config SERIAL_FSL_LPUART
1334 tristate "Freescale lpuart serial port support"
1338 Support for the on-chip lpuart on some Freescale SOCs.
1340 config SERIAL_FSL_LPUART_CONSOLE
1341 bool "Console on Freescale lpuart serial port"
1342 depends on SERIAL_FSL_LPUART=y
1343 select SERIAL_CORE_CONSOLE
1344 select SERIAL_EARLYCON
1346 If you have enabled the lpuart serial port on the Freescale SoCs,
1347 you can make it the console by answering Y to this option.
1349 config SERIAL_FSL_LINFLEXUART
1350 tristate "Freescale LINFlexD UART serial port support"
1354 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1356 config SERIAL_FSL_LINFLEXUART_CONSOLE
1357 bool "Console on Freescale LINFlexD UART serial port"
1358 depends on SERIAL_FSL_LINFLEXUART=y
1359 select SERIAL_CORE_CONSOLE
1360 select SERIAL_EARLYCON
1362 If you have enabled the LINFlexD UART serial port on the Freescale
1363 SoCs, you can make it the console by answering Y to this option.
1365 config SERIAL_CONEXANT_DIGICOLOR
1366 tristate "Conexant Digicolor CX92xxx USART serial port support"
1370 Support for the on-chip USART on Conexant Digicolor SoCs.
1372 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1373 bool "Console on Conexant Digicolor serial port"
1374 depends on SERIAL_CONEXANT_DIGICOLOR=y
1375 select SERIAL_CORE_CONSOLE
1377 If you have enabled the USART serial port on Conexant Digicolor
1378 SoCs, you can make it the console by answering Y to this option.
1380 config SERIAL_ST_ASC
1381 tristate "ST ASC serial port support"
1383 depends on ARM || COMPILE_TEST
1385 This driver is for the on-chip Asychronous Serial Controller on
1386 STMicroelectronics STi SoCs.
1387 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1388 It support all industry standard baud rates.
1392 config SERIAL_ST_ASC_CONSOLE
1393 bool "Support for console on ST ASC"
1394 depends on SERIAL_ST_ASC=y
1395 select SERIAL_CORE_CONSOLE
1397 config SERIAL_MEN_Z135
1398 tristate "MEN 16z135 Support"
1402 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1405 This driver can also be build as a module. If so, the module will be called
1409 tristate "Support for Spreadtrum serial"
1411 depends on COMMON_CLK
1413 This enables the driver for the Spreadtrum's serial.
1415 config SERIAL_SPRD_CONSOLE
1416 bool "Spreadtrum UART console support"
1417 depends on SERIAL_SPRD=y
1418 select SERIAL_CORE_CONSOLE
1419 select SERIAL_EARLYCON
1421 Support for early debug console using Spreadtrum's serial. This enables
1422 the console before standard serial driver is probed. This is enabled
1423 with "earlycon" on the kernel command line. The console is
1424 enabled when early_param is processed.
1427 tristate "STMicroelectronics STM32 serial port support"
1429 depends on ARCH_STM32 || COMPILE_TEST
1430 select SERIAL_MCTRL_GPIO if GPIOLIB
1432 This driver is for the on-chip Serial Controller on
1433 STMicroelectronics STM32 MCUs.
1434 USART supports Rx & Tx functionality.
1435 It support all industry standard baud rates.
1439 config SERIAL_STM32_CONSOLE
1440 bool "Support for console on STM32"
1441 depends on SERIAL_STM32=y
1442 select SERIAL_CORE_CONSOLE
1444 config SERIAL_MVEBU_UART
1445 bool "Marvell EBU serial port support"
1446 depends on ARCH_MVEBU || COMPILE_TEST
1449 This driver is for Marvell EBU SoC's UART. If you have a machine
1450 based on the Armada-3700 SoC and wish to use the on-board serial
1455 config SERIAL_MVEBU_CONSOLE
1456 bool "Console on Marvell EBU serial port"
1457 depends on SERIAL_MVEBU_UART
1458 select SERIAL_CORE_CONSOLE
1459 select SERIAL_EARLYCON
1462 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1463 (the system console is the device which receives all kernel messages
1464 and warnings and which allows logins in single user mode)
1468 tristate "Actions Semi Owl serial port support"
1469 depends on ARCH_ACTIONS || COMPILE_TEST
1472 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1473 Say 'Y' here if you wish to use the on-board serial port.
1476 config SERIAL_OWL_CONSOLE
1477 bool "Console on Actions Semi Owl serial port"
1478 depends on SERIAL_OWL=y
1479 select SERIAL_CORE_CONSOLE
1480 select SERIAL_EARLYCON
1483 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1484 as the system console.
1487 bool "RDA Micro serial port support"
1488 depends on ARCH_RDA || COMPILE_TEST
1491 This driver is for RDA8810PL SoC's UART.
1492 Say 'Y' here if you wish to use the on-board serial port.
1495 config SERIAL_RDA_CONSOLE
1496 bool "Console on RDA Micro serial port"
1497 depends on SERIAL_RDA=y
1498 select SERIAL_CORE_CONSOLE
1499 select SERIAL_EARLYCON
1502 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1503 console. Only earlycon is implemented currently.
1505 config SERIAL_MILBEAUT_USIO
1506 tristate "Milbeaut USIO/UART serial port support"
1507 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1508 default ARCH_MILBEAUT
1511 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1513 config SERIAL_MILBEAUT_USIO_PORTS
1514 int "Maximum number of CSIO/UART ports (1-8)"
1516 depends on SERIAL_MILBEAUT_USIO
1519 config SERIAL_MILBEAUT_USIO_CONSOLE
1520 bool "Support for console on MILBEAUT USIO/UART serial port"
1521 depends on SERIAL_MILBEAUT_USIO=y
1523 select SERIAL_CORE_CONSOLE
1524 select SERIAL_EARLYCON
1526 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1527 SoCs as the system console (the system console is the device which
1528 receives all kernel messages and warnings and which allows logins in
1531 config SERIAL_LITEUART
1532 tristate "LiteUART serial port support"
1533 depends on HAS_IOMEM
1534 depends on OF || COMPILE_TEST
1538 This driver is for the FPGA-based LiteUART serial controller from LiteX
1541 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1544 config SERIAL_LITEUART_MAX_PORTS
1545 int "Maximum number of LiteUART ports"
1546 depends on SERIAL_LITEUART
1549 Set this to the maximum number of serial ports you want the driver
1552 config SERIAL_LITEUART_CONSOLE
1553 bool "LiteUART serial port console support"
1554 depends on SERIAL_LITEUART=y
1555 select SERIAL_CORE_CONSOLE
1557 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1558 controller from LiteX SoC builder as the system console
1559 (the system console is the device which receives all kernel messages
1560 and warnings and which allows logins in single user mode).
1565 config SERIAL_MCTRL_GPIO