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_SEMIHOST
77 bool "Early console using Arm compatible semihosting"
78 depends on ARM64 || ARM || RISCV
80 select SERIAL_CORE_CONSOLE
81 select SERIAL_EARLYCON
83 Support for early debug console using Arm compatible semihosting.
84 This enables the console before standard serial driver is probed.
85 This is enabled with "earlycon=smh" on the kernel command line.
86 The console is enabled when early_param is processed.
88 config SERIAL_EARLYCON_RISCV_SBI
89 bool "Early console using RISC-V SBI"
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 COMMON_CLK
131 depends on ARCH_AT91 || COMPILE_TEST
133 select SERIAL_MCTRL_GPIO if GPIOLIB
134 select MFD_AT91_USART
136 This enables the driver for the on-chip UARTs of the Atmel
139 config SERIAL_ATMEL_CONSOLE
140 bool "Support for console on AT91 serial port"
141 depends on SERIAL_ATMEL=y
142 select SERIAL_CORE_CONSOLE
143 select SERIAL_EARLYCON
145 Say Y here if you wish to use an on-chip UART on a Atmel
146 AT91 processor as the system console (the system
147 console is the device which receives all kernel messages and
148 warnings and which allows logins in single user mode).
150 config SERIAL_ATMEL_PDC
151 bool "Support DMA transfers on AT91 serial port"
152 depends on SERIAL_ATMEL
155 Say Y here if you wish to use the PDC to do DMA transfers to
156 and from the Atmel AT91 serial port. In order to
157 actually use DMA transfers, make sure that the use_dma_tx
158 and use_dma_rx members in the atmel_uart_data struct is set
159 appropriately for each port.
161 Note that break and error handling currently doesn't work
162 properly when DMA is enabled. Make sure that ports where
163 this matters don't use DMA.
165 config SERIAL_ATMEL_TTYAT
166 bool "Install as device ttyATn instead of ttySn"
167 depends on SERIAL_ATMEL=y
169 Say Y here if you wish to have the internal AT91 UARTs
170 appear as /dev/ttyATn (major 204, minor starting at 154)
171 instead of the normal /dev/ttySn (major 4, minor starting at
172 64). This is necessary if you also want other UARTs, such as
173 external 8250/16C550 compatible UARTs.
174 The ttySn nodes are legally reserved for the 8250 serial driver
175 but are often misused by other serial drivers.
177 To use this, you should create suitable ttyATn device nodes in
178 /dev/, and pass "console=ttyATn" to the kernel.
180 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
182 config SERIAL_KGDB_NMI
183 bool "Serial console over KGDB NMI debugger port"
184 depends on KGDB_SERIAL_CONSOLE
186 This special driver allows you to temporary use NMI debugger port
187 as a normal console (assuming that the port is attached to KGDB).
189 Unlike KDB's disable_nmi command, with this driver you are always
190 able to go back to the debugger using KGDB escape sequence ($3#33).
191 This is because this console driver processes the input in NMI
192 context, and thus is able to intercept the magic sequence.
194 Note that since the console interprets input and uses polling
195 communication methods, for things like PPP you still must fully
196 detach debugger port from the KGDB NMI (i.e. disable_nmi), and
202 tristate "Meson serial port support"
203 depends on ARCH_MESON || COMPILE_TEST
206 This enables the driver for the on-chip UARTs of the Amlogic
209 config SERIAL_MESON_CONSOLE
210 bool "Support for console on meson"
211 depends on SERIAL_MESON
212 select SERIAL_CORE_CONSOLE
213 select SERIAL_EARLYCON
215 Say Y here if you wish to use a Amlogic MesonX UART as the
216 system console (the system console is the device which
217 receives all kernel messages and warnings and which allows
218 logins in single user mode) as /dev/ttyAMLx.
220 config SERIAL_CLPS711X
221 tristate "CLPS711X serial port support"
222 depends on ARCH_CLPS711X || COMPILE_TEST
224 select SERIAL_MCTRL_GPIO if GPIOLIB
226 This enables the driver for the on-chip UARTs of the Cirrus
227 Logic EP711x/EP721x/EP731x processors.
229 config SERIAL_CLPS711X_CONSOLE
230 bool "Support for console on CLPS711X serial port"
231 depends on SERIAL_CLPS711X=y
232 select SERIAL_CORE_CONSOLE
234 Even if you say Y here, the currently visible virtual console
235 (/dev/tty0) will still be used as the system console by default, but
236 you can alter that using a kernel command line option such as
239 config SERIAL_SAMSUNG
240 tristate "Samsung SoC serial support"
241 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
244 Support for the on-chip UARTs on the Samsung
245 S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
246 /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
247 these ports, depending on how the serial port pins are configured.
249 Choose Y/M here only if you build for such SoC.
251 config SERIAL_SAMSUNG_UARTS
253 depends on SERIAL_SAMSUNG
256 Select the number of available UART ports for the Samsung S3C
259 config SERIAL_SAMSUNG_CONSOLE
260 bool "Support for console on Samsung SoC serial port"
261 depends on SERIAL_SAMSUNG
262 select SERIAL_CORE_CONSOLE
263 select SERIAL_EARLYCON
265 Allow selection of the S3C24XX on-board serial ports for use as
268 Even if you say Y here, the currently visible virtual console
269 (/dev/tty0) will still be used as the system console by default, but
270 you can alter that using a kernel command line option such as
271 "console=ttySACx". (Try "man bootparam" or see the documentation of
272 your boot loader about how to pass options to the kernel at
276 tristate "NVIDIA Tegra20/30 SoC serial controller"
277 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
280 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
281 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
282 provide all of these ports, depending on how the serial port
283 are enabled). This driver uses the APB DMA to achieve higher baudrate
284 and better performance.
286 config SERIAL_TEGRA_TCU
287 tristate "NVIDIA Tegra Combined UART"
289 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
292 Support for the mailbox-based TCU (Tegra Combined UART) serial port.
293 TCU is a virtual serial port that allows multiplexing multiple data
294 streams into a single hardware serial port.
296 config SERIAL_TEGRA_TCU_CONSOLE
297 bool "Support for console on a Tegra TCU serial port"
298 depends on SERIAL_TEGRA_TCU=y
299 select SERIAL_CORE_CONSOLE
302 If you say Y here, it will be possible to use a the Tegra TCU as the
303 system console (the system console is the device which receives all
304 kernel messages and warnings and which allows logins in single user
309 config SERIAL_MAX3100
310 tristate "MAX3100 support"
316 config SERIAL_MAX310X
317 tristate "MAX310X support"
318 depends on SPI_MASTER
320 select REGMAP_SPI if SPI_MASTER
321 select REGMAP_I2C if I2C
323 This selects support for an advanced UART from Maxim (Dallas).
324 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
325 Each IC contains 128 words each of receive and transmit FIFO
326 that can be controlled through I2C or high-speed SPI.
328 Say Y here if you want to support this ICs.
331 bool "DECstation DZ serial driver"
332 depends on MACH_DECSTATION && 32BIT
336 DZ11-family serial controllers for DECstations and VAXstations,
337 including the DC7085, M7814, and M7819.
339 config SERIAL_DZ_CONSOLE
340 bool "Support console on DECstation DZ serial driver"
341 depends on SERIAL_DZ=y
342 select SERIAL_CORE_CONSOLE
345 If you say Y here, it will be possible to use a serial port as the
346 system console (the system console is the device which receives all
347 kernel messages and warnings and which allows logins in single user
350 Note that the firmware uses ttyS3 as the serial console on
351 DECstations that use this driver.
356 tristate "DECstation Z85C30 serial support"
357 depends on MACH_DECSTATION
361 Support for the Zilog 85C350 serial communications controller used
362 for serial ports in newer DECstation systems. These include the
363 DECsystem 5900 and all models of the DECstation and DECsystem 5000
364 systems except from model 200.
366 If unsure, say Y. To compile this driver as a module, choose M here:
367 the module will be called zs.
369 config SERIAL_ZS_CONSOLE
370 bool "Support for console on a DECstation Z85C30 serial port"
371 depends on SERIAL_ZS=y
372 select SERIAL_CORE_CONSOLE
375 If you say Y here, it will be possible to use a serial port as the
376 system console (the system console is the device which receives all
377 kernel messages and warnings and which allows logins in single user
380 Note that the firmware uses ttyS1 as the serial console on the
381 Maxine and ttyS3 on the others using this driver.
386 tristate "DC21285 serial port support"
387 depends on FOOTBRIDGE
390 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
391 PCI bridge you can enable its onboard serial port by enabling this
394 config SERIAL_21285_CONSOLE
395 bool "Console on DC21285 serial port"
396 depends on SERIAL_21285=y
397 select SERIAL_CORE_CONSOLE
399 If you have enabled the serial port on the 21285 footbridge you can
400 make it the console by answering Y to this option.
402 Even if you say Y here, the currently visible virtual console
403 (/dev/tty0) will still be used as the system console by default, but
404 you can alter that using a kernel command line option such as
405 "console=ttyFB". (Try "man bootparam" or see the documentation of
406 your boot loader (lilo or loadlin) about how to pass options to the
407 kernel at boot time.)
410 bool "PXA serial port support (DEPRECATED)"
411 depends on ARCH_PXA || ARCH_MMP
413 select SERIAL_8250_PXA if SERIAL_8250=y
414 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
416 If you have a machine based on an Intel XScale PXA2xx CPU you
417 can enable its onboard serial ports by enabling this option.
419 Unless you have a specific need, you should use SERIAL_8250_PXA
422 config SERIAL_PXA_NON8250
424 depends on !SERIAL_8250 || COMPILE_TEST
426 config SERIAL_PXA_CONSOLE
427 bool "Console on PXA serial port (DEPRECATED)"
428 depends on SERIAL_PXA
429 select SERIAL_CORE_CONSOLE
430 select SERIAL_8250_CONSOLE if SERIAL_8250=y
432 If you have enabled the serial port on the Intel XScale PXA
433 CPU you can make it the console by answering Y to this option.
435 Even if you say Y here, the currently visible virtual console
436 (/dev/tty0) will still be used as the system console by default, but
437 you can alter that using a kernel command line option such as
438 "console=ttySA0". (Try "man bootparam" or see the documentation of
439 your boot loader (lilo or loadlin) about how to pass options to the
440 kernel at boot time.)
442 Unless you have a specific need, you should use SERIAL_8250_PXA
443 and SERIAL_8250_CONSOLE instead of this.
446 bool "SA1100 serial port support"
447 depends on ARCH_SA1100
449 select SERIAL_MCTRL_GPIO if GPIOLIB
451 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
452 can enable its onboard serial port by enabling this option.
453 Please read <file:Documentation/arch/arm/sa1100/serial_uart.rst> for
456 config SERIAL_SA1100_CONSOLE
457 bool "Console on SA1100 serial port"
458 depends on SERIAL_SA1100
459 select SERIAL_CORE_CONSOLE
461 If you have enabled the serial port on the SA1100/SA1110 StrongARM
462 CPU you can make it the console by answering Y to this option.
464 Even if you say Y here, the currently visible virtual console
465 (/dev/tty0) will still be used as the system console by default, but
466 you can alter that using a kernel command line option such as
467 "console=ttySA0". (Try "man bootparam" or see the documentation of
468 your boot loader (lilo or loadlin) about how to pass options to the
469 kernel at boot time.)
472 tristate "IMX serial port support"
473 depends on ARCH_MXC || COMPILE_TEST
476 select SERIAL_MCTRL_GPIO if GPIOLIB
478 If you have a machine based on a Motorola IMX CPU you
479 can enable its onboard serial port by enabling this option.
481 config SERIAL_IMX_CONSOLE
482 tristate "Console on IMX serial port"
483 depends on SERIAL_IMX
484 select SERIAL_CORE_CONSOLE
486 If you have enabled the serial port on the Freescale IMX
487 CPU you can make it the console by answering Y/M to this option.
489 Even if you say Y/M here, the currently visible virtual console
490 (/dev/tty0) will still be used as the system console by default, but
491 you can alter that using a kernel command line option such as
492 "console=ttymxc0". (Try "man bootparam" or see the documentation of
493 your bootloader about how to pass options to the kernel at boot time.)
495 config SERIAL_IMX_EARLYCON
496 bool "Earlycon on IMX serial port"
497 depends on ARCH_MXC || COMPILE_TEST
500 select SERIAL_EARLYCON
501 select SERIAL_CORE_CONSOLE
502 default y if SERIAL_IMX_CONSOLE
504 If you have enabled the earlycon on the Freescale IMX
505 CPU you can make it the earlycon by answering Y to this option.
507 config SERIAL_UARTLITE
508 tristate "Xilinx uartlite serial port support"
512 Say Y here if you want to use the Xilinx uartlite serial controller.
514 To compile this driver as a module, choose M here: the
515 module will be called uartlite.
517 config SERIAL_UARTLITE_CONSOLE
518 bool "Support for console on Xilinx uartlite serial port"
519 depends on SERIAL_UARTLITE=y
520 select SERIAL_CORE_CONSOLE
521 select SERIAL_EARLYCON
523 Say Y here if you wish to use a Xilinx uartlite as the system
524 console (the system console is the device which receives all kernel
525 messages and warnings and which allows logins in single user mode).
527 config SERIAL_UARTLITE_NR_UARTS
528 int "Maximum number of uartlite serial ports"
529 depends on SERIAL_UARTLITE
533 Set this to the number of uartlites in your system, or the number
534 you think you might implement.
535 If maximum number of uartlite serial ports is more than 4, then the
536 driver uses dynamic allocation instead of static allocation for major
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 tristate "Sun Siemens SAB82532 serial support"
604 depends on SPARC && PCI
606 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
607 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
610 config SERIAL_SUNSAB_CONSOLE
611 bool "Console on Sun Siemens SAB82532 serial port"
612 depends on SERIAL_SUNSAB=y
614 If you would like to be able to use the SAB82532 serial port
615 on your Sparc system as the console, you can do so by answering
619 bool "Sun4v Hypervisor Console support"
622 This driver supports the console device found on SUN4V Sparc
623 systems. Say Y if you want to be able to use this device.
625 config SERIAL_IP22_ZILOG
626 tristate "SGI Zilog8530 serial support"
627 depends on SGI_HAS_ZILOG
630 This driver supports the Zilog8530 serial ports found on SGI
631 systems. Say Y or M if you want to be able to these serial ports.
633 config SERIAL_IP22_ZILOG_CONSOLE
634 bool "Console on SGI Zilog8530 serial port"
635 depends on SERIAL_IP22_ZILOG=y
636 select SERIAL_CORE_CONSOLE
639 tristate "SuperH SCI(F) serial port support"
640 depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
642 select SERIAL_MCTRL_GPIO if GPIOLIB
644 config SERIAL_SH_SCI_NR_UARTS
645 int "Maximum number of SCI(F) serial ports" if EXPERT
648 depends on SERIAL_SH_SCI
649 default "10" if SUPERH
650 default "18" if ARCH_RENESAS
653 config SERIAL_SH_SCI_CONSOLE
654 bool "Support for console on SuperH SCI(F)" if EXPERT
655 depends on SERIAL_SH_SCI=y
656 select SERIAL_CORE_CONSOLE
659 config SERIAL_SH_SCI_EARLYCON
660 bool "Support for early console on SuperH SCI(F)" if EXPERT
661 depends on SERIAL_SH_SCI=y
662 select SERIAL_CORE_CONSOLE
663 select SERIAL_EARLYCON
666 config SERIAL_SH_SCI_DMA
667 bool "DMA support" if EXPERT
668 depends on SERIAL_SH_SCI && DMA_ENGINE
671 config SERIAL_HS_LPC32XX
672 tristate "LPC32XX high speed serial port support"
673 depends on ARCH_LPC32XX || COMPILE_TEST
677 Support for the LPC32XX high speed serial ports (up to 900kbps).
678 Those are UARTs completely different from the Standard UARTs on the
680 Choose M or Y here to build this driver.
682 config SERIAL_HS_LPC32XX_CONSOLE
683 bool "Enable LPC32XX high speed UART serial console"
684 depends on SERIAL_HS_LPC32XX=y
685 select SERIAL_CORE_CONSOLE
687 If you would like to be able to use one of the high speed serial
688 ports on the LPC32XX as the console, you can do so by answering
694 config SERIAL_CORE_CONSOLE
701 bool "Coldfire serial support"
705 This serial driver supports the Freescale Coldfire serial ports.
707 config SERIAL_MCF_BAUDRATE
708 int "Default baudrate for Coldfire serial ports"
709 depends on SERIAL_MCF
712 This setting lets you define what the default baudrate is for the
713 ColdFire serial ports. The usual default varies from board to board,
714 and this setting is a way of catering for that.
716 config SERIAL_MCF_CONSOLE
717 bool "Coldfire serial console support"
718 depends on SERIAL_MCF
719 select SERIAL_CORE_CONSOLE
721 Enable a ColdFire internal serial port to be the system console.
723 config SERIAL_PMACZILOG
724 tristate "Mac or PowerMac z85c30 ESCC support"
725 depends on (M68K && MAC) || PPC_PMAC
728 This driver supports the Zilog z85C30 serial ports found on
730 Say Y or M if you want to be able to these serial ports.
732 config SERIAL_PMACZILOG_TTYS
733 bool "Use ttySn device nodes for Zilog z85c30"
734 depends on SERIAL_PMACZILOG
736 The pmac_zilog driver for the z85C30 chip on many powermacs
737 historically used the device numbers for /dev/ttySn. The
738 8250 serial port driver also uses these numbers, which means
739 the two drivers being unable to coexist; you could not use
740 both z85C30 and 8250 type ports at the same time.
742 If this option is not selected, the pmac_zilog driver will
743 use the device numbers allocated for /dev/ttyPZn. This allows
744 the pmac_zilog and 8250 drivers to co-exist, but may cause
745 existing userspace setups to break. Programs that need to
746 access the built-in serial ports on powermacs will need to
747 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
749 If you enable this option, any z85c30 ports in the system will
750 be registered as ttyS0 onwards as in the past, and you will be
751 unable to use the 8250 module for PCMCIA or other 16C550-style
754 Say N unless you need the z85c30 ports on your (Power)Mac
755 to appear as /dev/ttySn.
757 config SERIAL_PMACZILOG_CONSOLE
758 bool "Console on Mac or PowerMac z85c30 serial port"
759 depends on SERIAL_PMACZILOG=y
760 select SERIAL_CORE_CONSOLE
762 If you would like to be able to use the z85c30 serial port
763 on your (Power)Mac as the console, you can do so by answering
767 tristate "CPM SCC/SMC serial port support"
768 depends on CPM2 || CPM1
771 This driver supports the SCC and SMC serial ports on Motorola
772 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
774 config SERIAL_CPM_CONSOLE
775 bool "Support for console on CPM SCC/SMC serial port"
776 depends on SERIAL_CPM=y
777 select SERIAL_CORE_CONSOLE
779 Say Y here if you wish to use a SCC or SMC CPM UART as the system
780 console (the system console is the device which receives all kernel
781 messages and warnings and which allows logins in single user mode).
783 Even if you say Y here, the currently visible framebuffer console
784 (/dev/tty0) will still be used as the system console by default, but
785 you can alter that using a kernel command line option such as
786 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
787 your boot loader (lilo or loadlin) about how to pass options to the
788 kernel at boot time.)
791 tristate "Microchip PIC32 serial support"
792 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
795 If you have a PIC32, this driver supports the serial ports.
797 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
798 to use a serial port as a console, this must be included in kernel and
801 config SERIAL_PIC32_CONSOLE
802 bool "PIC32 serial console support"
803 depends on SERIAL_PIC32=y
804 select SERIAL_CORE_CONSOLE
806 If you have a PIC32, this driver supports the putting a console on one
809 Say Y to use the PIC32 console, otherwise say N.
811 config SERIAL_MPC52xx
812 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
813 depends on PPC_MPC52xx || PPC_MPC512x
816 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
817 like to use them, you must answer Y or M to this option. Note that
818 for use as console, it must be included in kernel and not as a
821 config SERIAL_MPC52xx_CONSOLE
822 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
823 depends on SERIAL_MPC52xx=y
824 select SERIAL_CORE_CONSOLE
826 Select this options if you'd like to use one of the PSC serial port
827 of the Freescale MPC52xx family as a console.
829 config SERIAL_MPC52xx_CONSOLE_BAUD
830 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
831 depends on SERIAL_MPC52xx_CONSOLE=y
834 Select the MPC52xx console baud rate.
835 This value is only used if the bootloader doesn't pass in the
839 tristate "IBM Multiport Serial Adapter"
841 depends on PPC_PSERIES || COMPILE_TEST
845 This driver is for a family of multiport serial adapters
846 including 2 port RVX, 2 port internal modem, 4 port internal
847 modem and a split 1 port RVX and 1 port internal modem.
849 This driver can also be built as a module. If so, the module
853 bool "TMPTX39XX/49XX SIO support"
854 depends on HAS_TXX9_SERIAL
858 config HAS_TXX9_SERIAL
861 config SERIAL_TXX9_NR_UARTS
862 int "Maximum number of TMPTX39XX/49XX SIO ports"
863 depends on SERIAL_TXX9
866 config SERIAL_TXX9_CONSOLE
867 bool "TMPTX39XX/49XX SIO Console support"
868 depends on SERIAL_TXX9=y
869 select SERIAL_CORE_CONSOLE
871 config SERIAL_TXX9_STDSERIAL
872 bool "TX39XX/49XX SIO act as standard serial"
873 depends on !SERIAL_8250 && SERIAL_TXX9
876 tristate "Digi International NEO and Classic PCI Support"
880 This is a driver for Digi International's Neo and Classic series
881 of cards which provide multiple serial ports. You would need
882 something like this to connect more than two modems to your Linux
883 box, for instance in order to become a dial-in server. This driver
884 supports PCI boards only.
886 If you have a card like this, say Y here, otherwise say N.
888 To compile this driver as a module, choose M here: the
889 module will be called jsm.
892 tristate "MSM on-chip serial port support"
893 depends on ARCH_QCOM || COMPILE_TEST
896 config SERIAL_MSM_CONSOLE
897 bool "MSM serial console support"
898 depends on SERIAL_MSM=y
899 select SERIAL_CORE_CONSOLE
900 select SERIAL_EARLYCON
902 config SERIAL_QCOM_GENI
903 tristate "QCOM on-chip GENI based serial port support"
904 depends on ARCH_QCOM || COMPILE_TEST
905 depends on QCOM_GENI_SE
908 config SERIAL_QCOM_GENI_CONSOLE
909 bool "QCOM GENI Serial Console support"
910 depends on SERIAL_QCOM_GENI
911 select SERIAL_CORE_CONSOLE
912 select SERIAL_EARLYCON
914 Serial console driver for Qualcomm Technologies Inc's GENI based
918 bool "VIA VT8500 on-chip serial port support"
919 depends on ARCH_VT8500 || COMPILE_TEST
922 config SERIAL_VT8500_CONSOLE
923 bool "VIA VT8500 serial console support"
924 depends on SERIAL_VT8500=y
925 select SERIAL_CORE_CONSOLE
928 tristate "OMAP serial port support"
929 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
932 If you have a machine based on an Texas Instruments OMAP CPU you
933 can enable its onboard serial ports by enabling this option.
935 By enabling this option you take advantage of dma feature available
936 with the omap-serial driver. DMA support can be enabled from platform
939 config SERIAL_OMAP_CONSOLE
940 bool "Console on OMAP serial port"
941 depends on SERIAL_OMAP=y
942 select SERIAL_CORE_CONSOLE
944 Select this option if you would like to use omap serial port as
947 Even if you say Y here, the currently visible virtual console
948 (/dev/tty0) will still be used as the system console by default, but
949 you can alter that using a kernel command line option such as
950 "console=ttyOx". (Try "man bootparam" or see the documentation of
951 your boot loader about how to pass options to the kernel at
955 tristate "SiFive UART support"
957 default ARCH_SIFIVE || ARCH_CANAAN
960 Select this option if you are building a kernel for a device that
961 contains a SiFive UART IP block. This type of UART is present on
962 SiFive FU540 SoCs, among others.
964 config SERIAL_SIFIVE_CONSOLE
965 bool "Console on SiFive UART"
966 depends on SERIAL_SIFIVE=y
967 default ARCH_SIFIVE || ARCH_CANAAN
968 select SERIAL_CORE_CONSOLE
969 select SERIAL_EARLYCON
971 Select this option if you would like to use a SiFive UART as the
974 Even if you say Y here, the currently visible virtual console
975 (/dev/tty0) will still be used as the system console by default, but
976 you can alter that using a kernel command line option such as
977 "console=ttySIFx". (Try "man bootparam" or see the documentation of
978 your boot loader about how to pass options to the kernel at
982 tristate "Lantiq serial driver"
983 depends on (LANTIQ || X86) || COMPILE_TEST
986 Support for UART on Lantiq and Intel SoCs.
987 To compile this driver as a module, select M here. The
988 module will be called lantiq.
990 config SERIAL_LANTIQ_CONSOLE
991 bool "Console on Lantiq UART"
992 depends on SERIAL_LANTIQ=y
993 select SERIAL_CORE_CONSOLE
994 select SERIAL_EARLYCON
996 Select this option if you would like to use a Lantiq UART as the
1000 tristate "Freescale QUICC Engine serial port support"
1001 depends on QUICC_ENGINE
1005 This driver supports the QE serial ports on Freescale embedded
1006 PowerPC that contain a QUICC Engine.
1008 config SERIAL_SCCNXP
1009 tristate "SCCNXP serial port support"
1012 This selects support for an advanced UART from NXP (Philips).
1013 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1014 SC28L202, SCC68681 and SCC68692.
1016 config SERIAL_SCCNXP_CONSOLE
1017 bool "Console on SCCNXP serial port"
1018 depends on SERIAL_SCCNXP=y
1019 select SERIAL_CORE_CONSOLE
1021 Support for console on SCCNXP serial ports.
1023 config SERIAL_SC16IS7XX_CORE
1026 config SERIAL_SC16IS7XX
1027 tristate "SC16IS7xx serial support"
1029 depends on (SPI_MASTER && !I2C) || I2C
1031 This selects support for SC16IS7xx serial ports.
1032 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1033 SC16IS760 and SC16IS762. Select supported buses using options below.
1035 config SERIAL_SC16IS7XX_I2C
1036 bool "SC16IS7xx for I2C interface"
1037 depends on SERIAL_SC16IS7XX
1039 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1040 select REGMAP_I2C if I2C
1043 Enable SC16IS7xx driver on I2C bus,
1044 If required say y, and say n to i2c if not required,
1045 Enabled by default to support oldconfig.
1046 You must select at least one bus for the driver to be built.
1048 config SERIAL_SC16IS7XX_SPI
1049 bool "SC16IS7xx for spi interface"
1050 depends on SERIAL_SC16IS7XX
1051 depends on SPI_MASTER
1052 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1053 select REGMAP_SPI if SPI_MASTER
1055 Enable SC16IS7xx driver on SPI bus,
1056 If required say y, and say n to spi if not required,
1057 This is additional support to existing driver.
1058 You must select at least one bus for the driver to be built.
1060 config SERIAL_TIMBERDALE
1061 tristate "Support for timberdale UART"
1063 depends on X86_32 || COMPILE_TEST
1065 Add support for UART controller on timberdale.
1067 config SERIAL_BCM63XX
1068 tristate "Broadcom BCM63xx/BCM33xx UART support"
1070 depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1071 default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
1073 This enables the driver for the onchip UART core found on
1074 the following chipsets:
1076 BCM33xx (cable modem)
1077 BCM63xx/BCM63xxx (DSL)
1079 BCM7xxx (STB) - DOCSIS console
1081 config SERIAL_BCM63XX_CONSOLE
1082 bool "Console on BCM63xx serial port"
1083 depends on SERIAL_BCM63XX=y
1084 select SERIAL_CORE_CONSOLE
1085 select SERIAL_EARLYCON
1087 If you have enabled the serial port on the BCM63xx CPU
1088 you can make it the console by answering Y to this option.
1090 config SERIAL_GRLIB_GAISLER_APBUART
1091 tristate "GRLIB APBUART serial support"
1092 depends on OF && SPARC
1095 Add support for the GRLIB APBUART serial port.
1097 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1098 bool "Console on GRLIB APBUART serial port"
1099 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1100 select SERIAL_CORE_CONSOLE
1102 Support for running a console on the GRLIB APBUART
1104 config SERIAL_ALTERA_JTAGUART
1105 tristate "Altera JTAG UART support"
1108 This driver supports the Altera JTAG UART port.
1110 config SERIAL_ALTERA_JTAGUART_CONSOLE
1111 bool "Altera JTAG UART console support"
1112 depends on SERIAL_ALTERA_JTAGUART=y
1113 select SERIAL_CORE_CONSOLE
1114 select SERIAL_EARLYCON
1116 Enable a Altera JTAG UART port to be the system console.
1118 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1119 bool "Bypass output when no connection"
1120 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1121 select SERIAL_CORE_CONSOLE
1123 Bypass console output and keep going even if there is no
1124 JTAG terminal connection with the host.
1126 config SERIAL_ALTERA_UART
1127 tristate "Altera UART support"
1130 This driver supports the Altera softcore UART port.
1132 config SERIAL_ALTERA_UART_MAXPORTS
1133 int "Maximum number of Altera UART ports"
1134 depends on SERIAL_ALTERA_UART
1137 This setting lets you define the maximum number of the Altera
1138 UART ports. The usual default varies from board to board, and
1139 this setting is a way of catering for that.
1141 config SERIAL_ALTERA_UART_BAUDRATE
1142 int "Default baudrate for Altera UART ports"
1143 depends on SERIAL_ALTERA_UART
1146 This setting lets you define what the default baudrate is for the
1147 Altera UART ports. The usual default varies from board to board,
1148 and this setting is a way of catering for that.
1150 config SERIAL_ALTERA_UART_CONSOLE
1151 bool "Altera UART console support"
1152 depends on SERIAL_ALTERA_UART=y
1153 select SERIAL_CORE_CONSOLE
1154 select SERIAL_EARLYCON
1156 Enable a Altera UART port to be the system console.
1158 config SERIAL_PCH_UART
1159 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1160 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1163 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1164 which is an IOH(Input/Output Hub) for x86 embedded processor.
1165 Enabling PCH_DMA, this PCH UART works as DMA mode.
1167 This driver also can be used for LAPIS Semiconductor IOH(Input/
1168 Output Hub), ML7213, ML7223 and ML7831.
1169 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1170 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1171 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1172 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1174 config SERIAL_PCH_UART_CONSOLE
1175 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1176 depends on SERIAL_PCH_UART=y
1177 select SERIAL_CORE_CONSOLE
1179 Say Y here if you wish to use the PCH UART as the system console
1180 (the system console is the device which receives all kernel messages and
1181 warnings and which allows logins in single user mode).
1183 config SERIAL_MXS_AUART
1184 tristate "MXS AUART support"
1185 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1187 select SERIAL_MCTRL_GPIO if GPIOLIB
1189 This driver supports the MXS and Alphascale ASM9260 Application
1192 config SERIAL_MXS_AUART_CONSOLE
1193 bool "MXS AUART console support"
1194 depends on SERIAL_MXS_AUART=y
1195 select SERIAL_CORE_CONSOLE
1197 Enable a MXS AUART port to be the system console.
1199 config SERIAL_XILINX_PS_UART
1200 tristate "Cadence (Xilinx Zynq) UART support"
1204 This driver supports the Cadence UART. It is found e.g. in Xilinx
1207 config SERIAL_XILINX_PS_UART_CONSOLE
1208 bool "Cadence UART console support"
1209 depends on SERIAL_XILINX_PS_UART=y
1210 select SERIAL_CORE_CONSOLE
1211 select SERIAL_EARLYCON
1213 Enable a Cadence UART port to be the system console.
1215 config SERIAL_AR933X
1216 tristate "AR933X serial port support"
1217 depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST)
1219 select SERIAL_MCTRL_GPIO if GPIOLIB
1221 If you have an Atheros AR933X SOC based board and want to use the
1222 built-in UART of the SoC, say Y to this option.
1224 To compile this driver as a module, choose M here: the
1225 module will be called ar933x_uart.
1227 config SERIAL_AR933X_CONSOLE
1228 bool "Console on AR933X serial port"
1229 depends on SERIAL_AR933X=y
1230 select SERIAL_CORE_CONSOLE
1232 Enable a built-in UART port of the AR933X to be the system console.
1234 config SERIAL_AR933X_NR_UARTS
1235 int "Maximum number of AR933X serial ports"
1236 depends on SERIAL_AR933X
1239 Set this to the number of serial ports you want the driver
1242 config SERIAL_MPS2_UART_CONSOLE
1243 bool "MPS2 UART console support"
1244 depends on SERIAL_MPS2_UART
1245 select SERIAL_CORE_CONSOLE
1246 select SERIAL_EARLYCON
1248 config SERIAL_MPS2_UART
1249 bool "MPS2 UART port"
1250 depends on ARCH_MPS2 || COMPILE_TEST
1253 This driver support the UART ports on ARM MPS2.
1256 tristate "ARC UART driver support"
1259 Driver for on-chip UART for ARC(Synopsys) for the legacy
1260 FPGA Boards (ML50x/ARCAngel4)
1262 config SERIAL_ARC_CONSOLE
1263 bool "Console on ARC UART"
1264 depends on SERIAL_ARC=y
1265 select SERIAL_CORE_CONSOLE
1266 select SERIAL_EARLYCON
1268 Enable system Console on ARC UART
1270 config SERIAL_ARC_NR_PORTS
1271 int "Number of ARC UART ports"
1272 depends on SERIAL_ARC
1276 Set this to the number of serial ports you want the driver
1280 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1284 This driver supports the Comtrol RocketPort EXPRESS and
1285 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1286 These adapters use a "RocketPort 2" ASIC that is not compatible
1287 with the original RocketPort driver (CONFIG_ROCKETPORT).
1289 To compile this driver as a module, choose M here: the
1290 module will be called rp2.
1292 If you want to compile this driver into the kernel, say Y here. If
1293 you don't have a suitable RocketPort card installed, say N.
1295 config SERIAL_RP2_NR_UARTS
1296 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1297 depends on SERIAL_RP2
1300 If multiple cards are present, the default limit of 32 ports may
1301 need to be increased.
1303 config SERIAL_FSL_LPUART
1304 tristate "Freescale lpuart serial port support"
1308 Support for the on-chip lpuart on some Freescale SOCs.
1310 config SERIAL_FSL_LPUART_CONSOLE
1311 bool "Console on Freescale lpuart serial port"
1312 depends on SERIAL_FSL_LPUART=y
1313 select SERIAL_CORE_CONSOLE
1314 select SERIAL_EARLYCON
1316 If you have enabled the lpuart serial port on the Freescale SoCs,
1317 you can make it the console by answering Y to this option.
1319 config SERIAL_FSL_LINFLEXUART
1320 tristate "Freescale LINFlexD UART serial port support"
1324 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1326 config SERIAL_FSL_LINFLEXUART_CONSOLE
1327 bool "Console on Freescale LINFlexD UART serial port"
1328 depends on SERIAL_FSL_LINFLEXUART=y
1329 select SERIAL_CORE_CONSOLE
1330 select SERIAL_EARLYCON
1332 If you have enabled the LINFlexD UART serial port on the Freescale
1333 SoCs, you can make it the console by answering Y to this option.
1335 config SERIAL_CONEXANT_DIGICOLOR
1336 tristate "Conexant Digicolor CX92xxx USART serial port support"
1340 Support for the on-chip USART on Conexant Digicolor SoCs.
1342 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1343 bool "Console on Conexant Digicolor serial port"
1344 depends on SERIAL_CONEXANT_DIGICOLOR=y
1345 select SERIAL_CORE_CONSOLE
1347 If you have enabled the USART serial port on Conexant Digicolor
1348 SoCs, you can make it the console by answering Y to this option.
1350 config SERIAL_ST_ASC
1351 tristate "ST ASC serial port support"
1353 depends on ARM || COMPILE_TEST
1355 This driver is for the on-chip Asynchronous Serial Controller on
1356 STMicroelectronics STi SoCs.
1357 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1358 It support all industry standard baud rates.
1362 config SERIAL_ST_ASC_CONSOLE
1363 bool "Support for console on ST ASC"
1364 depends on SERIAL_ST_ASC=y
1365 select SERIAL_CORE_CONSOLE
1367 config SERIAL_MEN_Z135
1368 tristate "MEN 16z135 Support"
1372 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1375 This driver can also be build as a module. If so, the module will be called
1379 tristate "Support for Spreadtrum serial"
1381 depends on COMMON_CLK
1383 This enables the driver for the Spreadtrum's serial.
1385 config SERIAL_SPRD_CONSOLE
1386 bool "Spreadtrum UART console support"
1387 depends on SERIAL_SPRD=y
1388 select SERIAL_CORE_CONSOLE
1389 select SERIAL_EARLYCON
1391 Support for early debug console using Spreadtrum's serial. This enables
1392 the console before standard serial driver is probed. This is enabled
1393 with "earlycon" on the kernel command line. The console is
1394 enabled when early_param is processed.
1397 tristate "STMicroelectronics STM32 serial port support"
1399 depends on ARCH_STM32 || COMPILE_TEST
1400 select SERIAL_MCTRL_GPIO if GPIOLIB
1402 This driver is for the on-chip Serial Controller on
1403 STMicroelectronics STM32 MCUs.
1404 USART supports Rx & Tx functionality.
1405 It support all industry standard baud rates.
1409 config SERIAL_STM32_CONSOLE
1410 bool "Support for console on STM32"
1411 depends on SERIAL_STM32=y
1412 select SERIAL_CORE_CONSOLE
1413 select SERIAL_EARLYCON
1415 config SERIAL_MVEBU_UART
1416 bool "Marvell EBU serial port support"
1417 depends on ARCH_MVEBU || COMPILE_TEST
1418 depends on COMMON_CLK
1421 This driver is for Marvell EBU SoC's UART. If you have a machine
1422 based on the Armada-3700 SoC and wish to use the on-board serial
1427 config SERIAL_MVEBU_CONSOLE
1428 bool "Console on Marvell EBU serial port"
1429 depends on SERIAL_MVEBU_UART
1430 select SERIAL_CORE_CONSOLE
1431 select SERIAL_EARLYCON
1434 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1435 (the system console is the device which receives all kernel messages
1436 and warnings and which allows logins in single user mode)
1440 tristate "Actions Semi Owl serial port support"
1441 depends on ARCH_ACTIONS || COMPILE_TEST
1444 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1445 Say 'Y' here if you wish to use the on-board serial port.
1448 config SERIAL_OWL_CONSOLE
1449 bool "Console on Actions Semi Owl serial port"
1450 depends on SERIAL_OWL=y
1451 select SERIAL_CORE_CONSOLE
1452 select SERIAL_EARLYCON
1455 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1456 as the system console.
1459 bool "RDA Micro serial port support"
1460 depends on ARCH_RDA || COMPILE_TEST
1463 This driver is for RDA8810PL SoC's UART.
1464 Say 'Y' here if you wish to use the on-board serial port.
1467 config SERIAL_RDA_CONSOLE
1468 bool "Console on RDA Micro serial port"
1469 depends on SERIAL_RDA=y
1470 select SERIAL_CORE_CONSOLE
1471 select SERIAL_EARLYCON
1474 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1475 console. Only earlycon is implemented currently.
1477 config SERIAL_MILBEAUT_USIO
1478 tristate "Milbeaut USIO/UART serial port support"
1479 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1480 default ARCH_MILBEAUT
1483 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1485 config SERIAL_MILBEAUT_USIO_PORTS
1486 int "Maximum number of CSIO/UART ports (1-8)"
1488 depends on SERIAL_MILBEAUT_USIO
1491 config SERIAL_MILBEAUT_USIO_CONSOLE
1492 bool "Support for console on MILBEAUT USIO/UART serial port"
1493 depends on SERIAL_MILBEAUT_USIO=y
1495 select SERIAL_CORE_CONSOLE
1496 select SERIAL_EARLYCON
1498 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1499 SoCs as the system console (the system console is the device which
1500 receives all kernel messages and warnings and which allows logins in
1503 config SERIAL_LITEUART
1504 tristate "LiteUART serial port support"
1505 depends on HAS_IOMEM
1507 depends on LITEX || COMPILE_TEST
1510 This driver is for the FPGA-based LiteUART serial controller from LiteX
1513 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1516 config SERIAL_LITEUART_MAX_PORTS
1517 int "Maximum number of LiteUART ports"
1518 depends on SERIAL_LITEUART
1521 Set this to the maximum number of serial ports you want the driver
1524 config SERIAL_LITEUART_CONSOLE
1525 bool "LiteUART serial port console support"
1526 depends on SERIAL_LITEUART=y
1527 select SERIAL_CORE_CONSOLE
1528 select SERIAL_EARLYCON
1530 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1531 controller from LiteX SoC builder as the system console
1532 (the system console is the device which receives all kernel messages
1533 and warnings and which allows logins in single user mode).
1536 config SERIAL_SUNPLUS
1537 tristate "Sunplus UART support"
1538 depends on ARCH_SUNPLUS || COMPILE_TEST
1541 Select this option if you would like to use Sunplus serial port on
1543 If you enable this option, Sunplus serial ports in the system will
1544 be registered as ttySUPx.
1545 This driver can also be built as a module. If so, the module will be
1546 called sunplus-uart.
1548 config SERIAL_SUNPLUS_CONSOLE
1549 bool "Console on Sunplus UART"
1550 depends on SERIAL_SUNPLUS
1551 select SERIAL_CORE_CONSOLE
1552 select SERIAL_EARLYCON
1554 Select this option if you would like to use a Sunplus UART as the
1556 Even if you say Y here, the currently visible virtual console
1557 (/dev/tty0) will still be used as the system console by default, but
1558 you can alter that using a kernel command line option such as
1561 config SERIAL_NUVOTON_MA35D1
1562 tristate "Nuvoton MA35D1 family UART support"
1563 depends on ARCH_MA35 || COMPILE_TEST
1566 This driver supports Nuvoton MA35D1 family UART ports. If you would
1567 like to use them, you must answer Y or M to this option. Note that
1568 for use as console, it must be included in kernel and not as a
1569 module. If you enable this option, Ma35D1 serial ports in the system
1570 will be registered as ttyNVTx.
1572 config SERIAL_NUVOTON_MA35D1_CONSOLE
1573 bool "Console on a Nuvotn MA35D1 family UART port"
1574 depends on SERIAL_NUVOTON_MA35D1=y
1575 select SERIAL_CORE_CONSOLE
1577 Select this options if you'd like to use the UART port0 of the
1578 Nuvoton MA35D1 family as a console.
1579 Even if you say Y here, the currently visible virtual console
1580 (/dev/tty0) will still be used as the system console by default,
1581 but you can alter that using a kernel command line option such as
1585 tristate "Espressif ESP32 UART support"
1586 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1588 select SERIAL_CORE_CONSOLE
1589 select SERIAL_EARLYCON
1591 Driver for the UART controllers of the Espressif ESP32xx SoCs.
1592 When earlycon option is enabled the following kernel command line
1593 snippets may be used:
1594 earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000
1595 earlycon=esp32uart,mmio32,0x3ff40000,115200n8
1597 config SERIAL_ESP32_ACM
1598 tristate "Espressif ESP32 USB ACM gadget support"
1599 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1601 select SERIAL_CORE_CONSOLE
1602 select SERIAL_EARLYCON
1604 Driver for the CDC ACM gadget controller of the Espressif ESP32S3
1605 SoCs that share separate USB controller with the JTAG adapter.
1606 When earlycon option is enabled the following kernel command line
1607 snippet may be used:
1608 earlycon=esp32s3acm,mmio32,0x60038000
1612 config SERIAL_MCTRL_GPIO