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 "MAX3100/3110/3111/3222 support"
314 This selects support for an advanced UART from Maxim.
315 Supported ICs are MAX3100, MAX3110, MAX3111, MAX3222.
317 Say Y here if you want to support these ICs.
319 config SERIAL_MAX310X
320 tristate "MAX310X support"
321 depends on SPI_MASTER
323 select REGMAP_SPI if SPI_MASTER
324 select REGMAP_I2C if I2C
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 || COMPILE_TEST
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/arch/arm/sa1100/serial_uart.rst> for
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.
538 If maximum number of uartlite serial ports is more than 4, then the
539 driver uses dynamic allocation instead of static allocation for major
542 config SERIAL_SUNCORE
546 select SERIAL_CORE_CONSOLE
549 config SERIAL_SUNZILOG
550 tristate "Sun Zilog8530 serial support"
553 This driver supports the Zilog8530 serial ports found on many Sparc
554 systems. Say Y or M if you want to be able to these serial ports.
556 config SERIAL_SUNZILOG_CONSOLE
557 bool "Console on Sun Zilog8530 serial port"
558 depends on SERIAL_SUNZILOG=y
560 If you would like to be able to use the Zilog8530 serial port
561 on your Sparc system as the console, you can do so by answering
565 tristate "Sun SU serial support"
566 depends on SPARC && PCI
568 This driver supports the 8250 serial ports that run the keyboard and
569 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
570 to these serial ports.
572 config SERIAL_SUNSU_CONSOLE
573 bool "Console on Sun SU serial port"
574 depends on SERIAL_SUNSU=y
576 If you would like to be able to use the SU serial port
577 on your Sparc system as the console, you can do so by answering
581 tristate "Serial MUX support"
586 Saying Y here will enable the hardware MUX serial driver for
587 the Nova, K class systems and D class with a 'remote control card'.
588 The hardware MUX is not 8250/16550 compatible therefore the
589 /dev/ttyB0 device is shared between the Serial MUX and the PDC
590 software console. The following steps need to be completed to use
593 1. create the device entry (mknod /dev/ttyB0 c 11 0)
594 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
595 3. Add device ttyB0 to /etc/securetty (if you want to log on as
596 root on this console.)
597 4. Change the kernel command console parameter to: console=ttyB0
599 config SERIAL_MUX_CONSOLE
600 bool "Support for console on serial MUX"
601 depends on SERIAL_MUX=y
602 select SERIAL_CORE_CONSOLE
606 tristate "Sun Siemens SAB82532 serial support"
607 depends on SPARC && PCI
609 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
610 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
613 config SERIAL_SUNSAB_CONSOLE
614 bool "Console on Sun Siemens SAB82532 serial port"
615 depends on SERIAL_SUNSAB=y
617 If you would like to be able to use the SAB82532 serial port
618 on your Sparc system as the console, you can do so by answering
622 bool "Sun4v Hypervisor Console support"
625 This driver supports the console device found on SUN4V Sparc
626 systems. Say Y if you want to be able to use this device.
628 config SERIAL_IP22_ZILOG
629 tristate "SGI Zilog8530 serial support"
630 depends on SGI_HAS_ZILOG
633 This driver supports the Zilog8530 serial ports found on SGI
634 systems. Say Y or M if you want to be able to these serial ports.
636 config SERIAL_IP22_ZILOG_CONSOLE
637 bool "Console on SGI Zilog8530 serial port"
638 depends on SERIAL_IP22_ZILOG=y
639 select SERIAL_CORE_CONSOLE
642 tristate "SuperH SCI(F) serial port support"
643 depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
645 select SERIAL_MCTRL_GPIO if GPIOLIB
647 config SERIAL_SH_SCI_NR_UARTS
648 int "Maximum number of SCI(F) serial ports" if EXPERT
651 depends on SERIAL_SH_SCI
652 default "10" if SUPERH
653 default "18" if ARCH_RENESAS
656 config SERIAL_SH_SCI_CONSOLE
657 bool "Support for console on SuperH SCI(F)" if EXPERT
658 depends on SERIAL_SH_SCI=y
659 select SERIAL_CORE_CONSOLE
662 config SERIAL_SH_SCI_EARLYCON
663 bool "Support for early console on SuperH SCI(F)" if EXPERT
664 depends on SERIAL_SH_SCI=y
665 select SERIAL_CORE_CONSOLE
666 select SERIAL_EARLYCON
669 config SERIAL_SH_SCI_DMA
670 bool "DMA support" if EXPERT
671 depends on SERIAL_SH_SCI && DMA_ENGINE
674 config SERIAL_HS_LPC32XX
675 tristate "LPC32XX high speed serial port support"
676 depends on ARCH_LPC32XX || COMPILE_TEST
680 Support for the LPC32XX high speed serial ports (up to 900kbps).
681 Those are UARTs completely different from the Standard UARTs on the
683 Choose M or Y here to build this driver.
685 config SERIAL_HS_LPC32XX_CONSOLE
686 bool "Enable LPC32XX high speed UART serial console"
687 depends on SERIAL_HS_LPC32XX=y
688 select SERIAL_CORE_CONSOLE
690 If you would like to be able to use one of the high speed serial
691 ports on the LPC32XX as the console, you can do so by answering
697 config SERIAL_CORE_CONSOLE
704 bool "Coldfire serial support"
708 This serial driver supports the Freescale Coldfire serial ports.
710 config SERIAL_MCF_BAUDRATE
711 int "Default baudrate for Coldfire serial ports"
712 depends on SERIAL_MCF
715 This setting lets you define what the default baudrate is for the
716 ColdFire serial ports. The usual default varies from board to board,
717 and this setting is a way of catering for that.
719 config SERIAL_MCF_CONSOLE
720 bool "Coldfire serial console support"
721 depends on SERIAL_MCF
722 select SERIAL_CORE_CONSOLE
724 Enable a ColdFire internal serial port to be the system console.
726 config SERIAL_PMACZILOG
727 tristate "Mac or PowerMac z85c30 ESCC support"
728 depends on (M68K && MAC) || PPC_PMAC
731 This driver supports the Zilog z85C30 serial ports found on
733 Say Y or M if you want to be able to these serial ports.
735 config SERIAL_PMACZILOG_TTYS
736 bool "Use ttySn device nodes for Zilog z85c30"
737 depends on SERIAL_PMACZILOG
739 The pmac_zilog driver for the z85C30 chip on many powermacs
740 historically used the device numbers for /dev/ttySn. The
741 8250 serial port driver also uses these numbers, which means
742 the two drivers being unable to coexist; you could not use
743 both z85C30 and 8250 type ports at the same time.
745 If this option is not selected, the pmac_zilog driver will
746 use the device numbers allocated for /dev/ttyPZn. This allows
747 the pmac_zilog and 8250 drivers to co-exist, but may cause
748 existing userspace setups to break. Programs that need to
749 access the built-in serial ports on powermacs will need to
750 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
752 If you enable this option, any z85c30 ports in the system will
753 be registered as ttyS0 onwards as in the past, and you will be
754 unable to use the 8250 module for PCMCIA or other 16C550-style
757 Say N unless you need the z85c30 ports on your (Power)Mac
758 to appear as /dev/ttySn.
760 config SERIAL_PMACZILOG_CONSOLE
761 bool "Console on Mac or PowerMac z85c30 serial port"
762 depends on SERIAL_PMACZILOG=y
763 select SERIAL_CORE_CONSOLE
765 If you would like to be able to use the z85c30 serial port
766 on your (Power)Mac as the console, you can do so by answering
770 tristate "CPM SCC/SMC serial port support"
771 depends on CPM2 || CPM1
774 This driver supports the SCC and SMC serial ports on Motorola
775 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
777 config SERIAL_CPM_CONSOLE
778 bool "Support for console on CPM SCC/SMC serial port"
779 depends on SERIAL_CPM=y
780 select SERIAL_CORE_CONSOLE
782 Say Y here if you wish to use a SCC or SMC CPM UART as the system
783 console (the system console is the device which receives all kernel
784 messages and warnings and which allows logins in single user mode).
786 Even if you say Y here, the currently visible framebuffer console
787 (/dev/tty0) will still be used as the system console by default, but
788 you can alter that using a kernel command line option such as
789 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
790 your boot loader (lilo or loadlin) about how to pass options to the
791 kernel at boot time.)
794 tristate "Microchip PIC32 serial support"
795 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
798 If you have a PIC32, this driver supports the serial ports.
800 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
801 to use a serial port as a console, this must be included in kernel and
804 config SERIAL_PIC32_CONSOLE
805 bool "PIC32 serial console support"
806 depends on SERIAL_PIC32=y
807 select SERIAL_CORE_CONSOLE
809 If you have a PIC32, this driver supports the putting a console on one
812 Say Y to use the PIC32 console, otherwise say N.
814 config SERIAL_MPC52xx
815 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
816 depends on PPC_MPC52xx || PPC_MPC512x
819 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
820 like to use them, you must answer Y or M to this option. Note that
821 for use as console, it must be included in kernel and not as a
824 config SERIAL_MPC52xx_CONSOLE
825 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
826 depends on SERIAL_MPC52xx=y
827 select SERIAL_CORE_CONSOLE
829 Select this options if you'd like to use one of the PSC serial port
830 of the Freescale MPC52xx family as a console.
832 config SERIAL_MPC52xx_CONSOLE_BAUD
833 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
834 depends on SERIAL_MPC52xx_CONSOLE=y
837 Select the MPC52xx console baud rate.
838 This value is only used if the bootloader doesn't pass in the
842 tristate "IBM Multiport Serial Adapter"
844 depends on PPC_PSERIES || COMPILE_TEST
848 This driver is for a family of multiport serial adapters
849 including 2 port RVX, 2 port internal modem, 4 port internal
850 modem and a split 1 port RVX and 1 port internal modem.
852 This driver can also be built as a module. If so, the module
856 bool "TMPTX39XX/49XX SIO support"
857 depends on HAS_TXX9_SERIAL
861 config HAS_TXX9_SERIAL
864 config SERIAL_TXX9_NR_UARTS
865 int "Maximum number of TMPTX39XX/49XX SIO ports"
866 depends on SERIAL_TXX9
869 config SERIAL_TXX9_CONSOLE
870 bool "TMPTX39XX/49XX SIO Console support"
871 depends on SERIAL_TXX9=y
872 select SERIAL_CORE_CONSOLE
874 config SERIAL_TXX9_STDSERIAL
875 bool "TX39XX/49XX SIO act as standard serial"
876 depends on !SERIAL_8250 && SERIAL_TXX9
879 tristate "Digi International NEO and Classic PCI Support"
880 depends on PCI && HAS_IOPORT
883 This is a driver for Digi International's Neo and Classic series
884 of cards which provide multiple serial ports. You would need
885 something like this to connect more than two modems to your Linux
886 box, for instance in order to become a dial-in server. This driver
887 supports PCI boards only.
889 If you have a card like this, say Y here, otherwise say N.
891 To compile this driver as a module, choose M here: the
892 module will be called jsm.
895 tristate "MSM on-chip serial port support"
896 depends on ARCH_QCOM || COMPILE_TEST
899 config SERIAL_MSM_CONSOLE
900 bool "MSM serial console support"
901 depends on SERIAL_MSM=y
902 select SERIAL_CORE_CONSOLE
903 select SERIAL_EARLYCON
905 config SERIAL_QCOM_GENI
906 tristate "QCOM on-chip GENI based serial port support"
907 depends on ARCH_QCOM || COMPILE_TEST
908 depends on QCOM_GENI_SE
911 config SERIAL_QCOM_GENI_CONSOLE
912 bool "QCOM GENI Serial Console support"
913 depends on SERIAL_QCOM_GENI
914 select SERIAL_CORE_CONSOLE
915 select SERIAL_EARLYCON
917 Serial console driver for Qualcomm Technologies Inc's GENI based
921 bool "VIA VT8500 on-chip serial port support"
922 depends on ARCH_VT8500 || COMPILE_TEST
925 config SERIAL_VT8500_CONSOLE
926 bool "VIA VT8500 serial console support"
927 depends on SERIAL_VT8500=y
928 select SERIAL_CORE_CONSOLE
931 tristate "OMAP serial port support"
932 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
935 If you have a machine based on an Texas Instruments OMAP CPU you
936 can enable its onboard serial ports by enabling this option.
938 By enabling this option you take advantage of dma feature available
939 with the omap-serial driver. DMA support can be enabled from platform
942 config SERIAL_OMAP_CONSOLE
943 bool "Console on OMAP serial port"
944 depends on SERIAL_OMAP=y
945 select SERIAL_CORE_CONSOLE
947 Select this option if you would like to use omap serial port as
950 Even if you say Y here, the currently visible virtual console
951 (/dev/tty0) will still be used as the system console by default, but
952 you can alter that using a kernel command line option such as
953 "console=ttyOx". (Try "man bootparam" or see the documentation of
954 your boot loader about how to pass options to the kernel at
958 tristate "SiFive UART support"
960 default ARCH_SIFIVE || ARCH_CANAAN
963 Select this option if you are building a kernel for a device that
964 contains a SiFive UART IP block. This type of UART is present on
965 SiFive FU540 SoCs, among others.
967 config SERIAL_SIFIVE_CONSOLE
968 bool "Console on SiFive UART"
969 depends on SERIAL_SIFIVE=y
970 default ARCH_SIFIVE || ARCH_CANAAN
971 select SERIAL_CORE_CONSOLE
972 select SERIAL_EARLYCON
974 Select this option if you would like to use a SiFive UART as the
977 Even if you say Y here, the currently visible virtual console
978 (/dev/tty0) will still be used as the system console by default, but
979 you can alter that using a kernel command line option such as
980 "console=ttySIFx". (Try "man bootparam" or see the documentation of
981 your boot loader about how to pass options to the kernel at
985 tristate "Lantiq serial driver"
986 depends on (LANTIQ || X86) || COMPILE_TEST
989 Support for UART on Lantiq and Intel SoCs.
990 To compile this driver as a module, select M here. The
991 module will be called lantiq.
993 config SERIAL_LANTIQ_CONSOLE
994 bool "Console on Lantiq UART"
995 depends on SERIAL_LANTIQ=y
996 select SERIAL_CORE_CONSOLE
997 select SERIAL_EARLYCON
999 Select this option if you would like to use a Lantiq UART as the
1003 tristate "Freescale QUICC Engine serial port support"
1004 depends on QUICC_ENGINE
1008 This driver supports the QE serial ports on Freescale embedded
1009 PowerPC that contain a QUICC Engine.
1011 config SERIAL_SCCNXP
1012 tristate "SCCNXP serial port support"
1015 This selects support for an advanced UART from NXP (Philips).
1016 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1017 SC28L202, SCC68681 and SCC68692.
1019 config SERIAL_SCCNXP_CONSOLE
1020 bool "Console on SCCNXP serial port"
1021 depends on SERIAL_SCCNXP=y
1022 select SERIAL_CORE_CONSOLE
1024 Support for console on SCCNXP serial ports.
1026 config SERIAL_SC16IS7XX
1027 tristate "NXP SC16IS7xx UART support"
1028 depends on SPI_MASTER || I2C
1030 select SERIAL_SC16IS7XX_SPI if SPI_MASTER
1031 select SERIAL_SC16IS7XX_I2C if I2C
1033 Core driver for NXP SC16IS7xx UARTs.
1043 The driver supports both I2C and SPI interfaces.
1045 config SERIAL_SC16IS7XX_I2C
1049 config SERIAL_SC16IS7XX_SPI
1053 config SERIAL_TIMBERDALE
1054 tristate "Support for timberdale UART"
1056 depends on X86_32 || COMPILE_TEST
1058 Add support for UART controller on timberdale.
1060 config SERIAL_BCM63XX
1061 tristate "Broadcom BCM63xx/BCM33xx UART support"
1063 depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1064 default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
1066 This enables the driver for the onchip UART core found on
1067 the following chipsets:
1069 BCM33xx (cable modem)
1070 BCM63xx/BCM63xxx (DSL)
1072 BCM7xxx (STB) - DOCSIS console
1074 config SERIAL_BCM63XX_CONSOLE
1075 bool "Console on BCM63xx serial port"
1076 depends on SERIAL_BCM63XX=y
1077 select SERIAL_CORE_CONSOLE
1078 select SERIAL_EARLYCON
1080 If you have enabled the serial port on the BCM63xx CPU
1081 you can make it the console by answering Y to this option.
1083 config SERIAL_GRLIB_GAISLER_APBUART
1084 tristate "GRLIB APBUART serial support"
1085 depends on OF && SPARC
1088 Add support for the GRLIB APBUART serial port.
1090 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1091 bool "Console on GRLIB APBUART serial port"
1092 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1093 select SERIAL_CORE_CONSOLE
1095 Support for running a console on the GRLIB APBUART
1097 config SERIAL_ALTERA_JTAGUART
1098 tristate "Altera JTAG UART support"
1101 This driver supports the Altera JTAG UART port.
1103 config SERIAL_ALTERA_JTAGUART_CONSOLE
1104 bool "Altera JTAG UART console support"
1105 depends on SERIAL_ALTERA_JTAGUART=y
1106 select SERIAL_CORE_CONSOLE
1107 select SERIAL_EARLYCON
1109 Enable a Altera JTAG UART port to be the system console.
1111 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1112 bool "Bypass output when no connection"
1113 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1114 select SERIAL_CORE_CONSOLE
1116 Bypass console output and keep going even if there is no
1117 JTAG terminal connection with the host.
1119 config SERIAL_ALTERA_UART
1120 tristate "Altera UART support"
1123 This driver supports the Altera softcore UART port.
1125 config SERIAL_ALTERA_UART_MAXPORTS
1126 int "Maximum number of Altera UART ports"
1127 depends on SERIAL_ALTERA_UART
1130 This setting lets you define the maximum number of the Altera
1131 UART ports. The usual default varies from board to board, and
1132 this setting is a way of catering for that.
1134 config SERIAL_ALTERA_UART_BAUDRATE
1135 int "Default baudrate for Altera UART ports"
1136 depends on SERIAL_ALTERA_UART
1139 This setting lets you define what the default baudrate is for the
1140 Altera UART ports. The usual default varies from board to board,
1141 and this setting is a way of catering for that.
1143 config SERIAL_ALTERA_UART_CONSOLE
1144 bool "Altera UART console support"
1145 depends on SERIAL_ALTERA_UART=y
1146 select SERIAL_CORE_CONSOLE
1147 select SERIAL_EARLYCON
1149 Enable a Altera UART port to be the system console.
1151 config SERIAL_PCH_UART
1152 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1153 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1156 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1157 which is an IOH(Input/Output Hub) for x86 embedded processor.
1158 Enabling PCH_DMA, this PCH UART works as DMA mode.
1160 This driver also can be used for LAPIS Semiconductor IOH(Input/
1161 Output Hub), ML7213, ML7223 and ML7831.
1162 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1163 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1164 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1165 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1167 config SERIAL_PCH_UART_CONSOLE
1168 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1169 depends on SERIAL_PCH_UART=y
1170 select SERIAL_CORE_CONSOLE
1172 Say Y here if you wish to use the PCH UART as the system console
1173 (the system console is the device which receives all kernel messages and
1174 warnings and which allows logins in single user mode).
1176 config SERIAL_MXS_AUART
1177 tristate "MXS AUART support"
1178 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1180 select SERIAL_MCTRL_GPIO if GPIOLIB
1182 This driver supports the MXS and Alphascale ASM9260 Application
1185 config SERIAL_MXS_AUART_CONSOLE
1186 bool "MXS AUART console support"
1187 depends on SERIAL_MXS_AUART=y
1188 select SERIAL_CORE_CONSOLE
1190 Enable a MXS AUART port to be the system console.
1192 config SERIAL_XILINX_PS_UART
1193 tristate "Cadence (Xilinx Zynq) UART support"
1197 This driver supports the Cadence UART. It is found e.g. in Xilinx
1200 config SERIAL_XILINX_PS_UART_CONSOLE
1201 bool "Cadence UART console support"
1202 depends on SERIAL_XILINX_PS_UART=y
1203 select SERIAL_CORE_CONSOLE
1204 select SERIAL_EARLYCON
1206 Enable a Cadence UART port to be the system console.
1208 config SERIAL_AR933X
1209 tristate "AR933X serial port support"
1210 depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST)
1212 select SERIAL_MCTRL_GPIO if GPIOLIB
1214 If you have an Atheros AR933X SOC based board and want to use the
1215 built-in UART of the SoC, say Y to this option.
1217 To compile this driver as a module, choose M here: the
1218 module will be called ar933x_uart.
1220 config SERIAL_AR933X_CONSOLE
1221 bool "Console on AR933X serial port"
1222 depends on SERIAL_AR933X=y
1223 select SERIAL_CORE_CONSOLE
1225 Enable a built-in UART port of the AR933X to be the system console.
1227 config SERIAL_AR933X_NR_UARTS
1228 int "Maximum number of AR933X serial ports"
1229 depends on SERIAL_AR933X
1232 Set this to the number of serial ports you want the driver
1235 config SERIAL_MPS2_UART_CONSOLE
1236 bool "MPS2 UART console support"
1237 depends on SERIAL_MPS2_UART
1238 select SERIAL_CORE_CONSOLE
1239 select SERIAL_EARLYCON
1241 config SERIAL_MPS2_UART
1242 bool "MPS2 UART port"
1243 depends on ARCH_MPS2 || COMPILE_TEST
1246 This driver support the UART ports on ARM MPS2.
1249 tristate "ARC UART driver support"
1252 Driver for on-chip UART for ARC(Synopsys) for the legacy
1253 FPGA Boards (ML50x/ARCAngel4)
1255 config SERIAL_ARC_CONSOLE
1256 bool "Console on ARC UART"
1257 depends on SERIAL_ARC=y
1258 select SERIAL_CORE_CONSOLE
1259 select SERIAL_EARLYCON
1261 Enable system Console on ARC UART
1263 config SERIAL_ARC_NR_PORTS
1264 int "Number of ARC UART ports"
1265 depends on SERIAL_ARC
1269 Set this to the number of serial ports you want the driver
1273 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1277 This driver supports the Comtrol RocketPort EXPRESS and
1278 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1279 These adapters use a "RocketPort 2" ASIC that is not compatible
1280 with the original RocketPort driver (CONFIG_ROCKETPORT).
1282 To compile this driver as a module, choose M here: the
1283 module will be called rp2.
1285 If you want to compile this driver into the kernel, say Y here. If
1286 you don't have a suitable RocketPort card installed, say N.
1288 config SERIAL_RP2_NR_UARTS
1289 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1290 depends on SERIAL_RP2
1293 If multiple cards are present, the default limit of 32 ports may
1294 need to be increased.
1296 config SERIAL_FSL_LPUART
1297 tristate "Freescale lpuart serial port support"
1301 Support for the on-chip lpuart on some Freescale SOCs.
1303 config SERIAL_FSL_LPUART_CONSOLE
1304 bool "Console on Freescale lpuart serial port"
1305 depends on SERIAL_FSL_LPUART=y
1306 select SERIAL_CORE_CONSOLE
1307 select SERIAL_EARLYCON
1309 If you have enabled the lpuart serial port on the Freescale SoCs,
1310 you can make it the console by answering Y to this option.
1312 config SERIAL_FSL_LINFLEXUART
1313 tristate "Freescale LINFlexD UART serial port support"
1317 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1319 config SERIAL_FSL_LINFLEXUART_CONSOLE
1320 bool "Console on Freescale LINFlexD UART serial port"
1321 depends on SERIAL_FSL_LINFLEXUART=y
1322 select SERIAL_CORE_CONSOLE
1323 select SERIAL_EARLYCON
1325 If you have enabled the LINFlexD UART serial port on the Freescale
1326 SoCs, you can make it the console by answering Y to this option.
1328 config SERIAL_CONEXANT_DIGICOLOR
1329 tristate "Conexant Digicolor CX92xxx USART serial port support"
1333 Support for the on-chip USART on Conexant Digicolor SoCs.
1335 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1336 bool "Console on Conexant Digicolor serial port"
1337 depends on SERIAL_CONEXANT_DIGICOLOR=y
1338 select SERIAL_CORE_CONSOLE
1340 If you have enabled the USART serial port on Conexant Digicolor
1341 SoCs, you can make it the console by answering Y to this option.
1343 config SERIAL_ST_ASC
1344 tristate "ST ASC serial port support"
1346 depends on ARM || COMPILE_TEST
1348 This driver is for the on-chip Asynchronous Serial Controller on
1349 STMicroelectronics STi SoCs.
1350 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1351 It support all industry standard baud rates.
1355 config SERIAL_ST_ASC_CONSOLE
1356 bool "Support for console on ST ASC"
1357 depends on SERIAL_ST_ASC=y
1358 select SERIAL_CORE_CONSOLE
1360 config SERIAL_MEN_Z135
1361 tristate "MEN 16z135 Support"
1365 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1368 This driver can also be build as a module. If so, the module will be called
1372 tristate "Support for Spreadtrum serial"
1374 depends on COMMON_CLK
1376 This enables the driver for the Spreadtrum's serial.
1378 config SERIAL_SPRD_CONSOLE
1379 bool "Spreadtrum UART console support"
1380 depends on SERIAL_SPRD=y
1381 select SERIAL_CORE_CONSOLE
1382 select SERIAL_EARLYCON
1384 Support for early debug console using Spreadtrum's serial. This enables
1385 the console before standard serial driver is probed. This is enabled
1386 with "earlycon" on the kernel command line. The console is
1387 enabled when early_param is processed.
1390 tristate "STMicroelectronics STM32 serial port support"
1392 depends on ARCH_STM32 || COMPILE_TEST
1393 select SERIAL_MCTRL_GPIO if GPIOLIB
1395 This driver is for the on-chip Serial Controller on
1396 STMicroelectronics STM32 MCUs.
1397 USART supports Rx & Tx functionality.
1398 It support all industry standard baud rates.
1402 config SERIAL_STM32_CONSOLE
1403 bool "Support for console on STM32"
1404 depends on SERIAL_STM32=y
1405 select SERIAL_CORE_CONSOLE
1406 select SERIAL_EARLYCON
1408 config SERIAL_MVEBU_UART
1409 bool "Marvell EBU serial port support"
1410 depends on ARCH_MVEBU || COMPILE_TEST
1411 depends on COMMON_CLK
1414 This driver is for Marvell EBU SoC's UART. If you have a machine
1415 based on the Armada-3700 SoC and wish to use the on-board serial
1420 config SERIAL_MVEBU_CONSOLE
1421 bool "Console on Marvell EBU serial port"
1422 depends on SERIAL_MVEBU_UART
1423 select SERIAL_CORE_CONSOLE
1424 select SERIAL_EARLYCON
1427 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1428 (the system console is the device which receives all kernel messages
1429 and warnings and which allows logins in single user mode)
1433 tristate "Actions Semi Owl serial port support"
1434 depends on ARCH_ACTIONS || COMPILE_TEST
1437 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1438 Say 'Y' here if you wish to use the on-board serial port.
1441 config SERIAL_OWL_CONSOLE
1442 bool "Console on Actions Semi Owl serial port"
1443 depends on SERIAL_OWL=y
1444 select SERIAL_CORE_CONSOLE
1445 select SERIAL_EARLYCON
1448 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1449 as the system console.
1452 bool "RDA Micro serial port support"
1453 depends on ARCH_RDA || COMPILE_TEST
1456 This driver is for RDA8810PL SoC's UART.
1457 Say 'Y' here if you wish to use the on-board serial port.
1460 config SERIAL_RDA_CONSOLE
1461 bool "Console on RDA Micro serial port"
1462 depends on SERIAL_RDA=y
1463 select SERIAL_CORE_CONSOLE
1464 select SERIAL_EARLYCON
1467 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1468 console. Only earlycon is implemented currently.
1470 config SERIAL_MILBEAUT_USIO
1471 tristate "Milbeaut USIO/UART serial port support"
1472 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1473 default ARCH_MILBEAUT
1476 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1478 config SERIAL_MILBEAUT_USIO_PORTS
1479 int "Maximum number of CSIO/UART ports (1-8)"
1481 depends on SERIAL_MILBEAUT_USIO
1484 config SERIAL_MILBEAUT_USIO_CONSOLE
1485 bool "Support for console on MILBEAUT USIO/UART serial port"
1486 depends on SERIAL_MILBEAUT_USIO=y
1488 select SERIAL_CORE_CONSOLE
1489 select SERIAL_EARLYCON
1491 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1492 SoCs as the system console (the system console is the device which
1493 receives all kernel messages and warnings and which allows logins in
1496 config SERIAL_LITEUART
1497 tristate "LiteUART serial port support"
1498 depends on HAS_IOMEM
1500 depends on LITEX || COMPILE_TEST
1503 This driver is for the FPGA-based LiteUART serial controller from LiteX
1506 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1509 config SERIAL_LITEUART_MAX_PORTS
1510 int "Maximum number of LiteUART ports"
1511 depends on SERIAL_LITEUART
1514 Set this to the maximum number of serial ports you want the driver
1517 config SERIAL_LITEUART_CONSOLE
1518 bool "LiteUART serial port console support"
1519 depends on SERIAL_LITEUART=y
1520 select SERIAL_CORE_CONSOLE
1521 select SERIAL_EARLYCON
1523 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1524 controller from LiteX SoC builder as the system console
1525 (the system console is the device which receives all kernel messages
1526 and warnings and which allows logins in single user mode).
1529 config SERIAL_SUNPLUS
1530 tristate "Sunplus UART support"
1531 depends on ARCH_SUNPLUS || COMPILE_TEST
1534 Select this option if you would like to use Sunplus serial port on
1536 If you enable this option, Sunplus serial ports in the system will
1537 be registered as ttySUPx.
1538 This driver can also be built as a module. If so, the module will be
1539 called sunplus-uart.
1541 config SERIAL_SUNPLUS_CONSOLE
1542 bool "Console on Sunplus UART"
1543 depends on SERIAL_SUNPLUS
1544 select SERIAL_CORE_CONSOLE
1545 select SERIAL_EARLYCON
1547 Select this option if you would like to use a Sunplus UART as the
1549 Even if you say Y here, the currently visible virtual console
1550 (/dev/tty0) will still be used as the system console by default, but
1551 you can alter that using a kernel command line option such as
1554 config SERIAL_NUVOTON_MA35D1
1555 tristate "Nuvoton MA35D1 family UART support"
1556 depends on ARCH_MA35 || COMPILE_TEST
1559 This driver supports Nuvoton MA35D1 family UART ports. If you would
1560 like to use them, you must answer Y or M to this option. Note that
1561 for use as console, it must be included in kernel and not as a
1562 module. If you enable this option, Ma35D1 serial ports in the system
1563 will be registered as ttyNVTx.
1565 config SERIAL_NUVOTON_MA35D1_CONSOLE
1566 bool "Console on a Nuvotn MA35D1 family UART port"
1567 depends on SERIAL_NUVOTON_MA35D1=y
1568 select SERIAL_CORE_CONSOLE
1570 Select this options if you'd like to use the UART port0 of the
1571 Nuvoton MA35D1 family as a console.
1572 Even if you say Y here, the currently visible virtual console
1573 (/dev/tty0) will still be used as the system console by default,
1574 but you can alter that using a kernel command line option such as
1578 tristate "Espressif ESP32 UART support"
1579 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1581 select SERIAL_CORE_CONSOLE
1582 select SERIAL_EARLYCON
1584 Driver for the UART controllers of the Espressif ESP32xx SoCs.
1585 When earlycon option is enabled the following kernel command line
1586 snippets may be used:
1587 earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000
1588 earlycon=esp32uart,mmio32,0x3ff40000,115200n8
1590 config SERIAL_ESP32_ACM
1591 tristate "Espressif ESP32 USB ACM gadget support"
1592 depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1594 select SERIAL_CORE_CONSOLE
1595 select SERIAL_EARLYCON
1597 Driver for the CDC ACM gadget controller of the Espressif ESP32S3
1598 SoCs that share separate USB controller with the JTAG adapter.
1599 When earlycon option is enabled the following kernel command line
1600 snippet may be used:
1601 earlycon=esp32s3acm,mmio32,0x60038000
1605 config SERIAL_MCTRL_GPIO