1 # SPDX-License-Identifier: GPL-2.0
3 # Serial device configuration
11 depends on SERIAL_CORE
13 Support for early consoles with the earlycon parameter. This enables
14 the console before standard serial driver is probed. The console is
15 enabled when early_param is processed.
17 source "drivers/tty/serial/8250/Kconfig"
19 comment "Non-8250 serial port support"
21 config SERIAL_AMBA_PL010
22 tristate "ARM AMBA PL010 serial port support"
23 depends on ARM_AMBA || COMPILE_TEST
26 This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have
27 an Integrator/AP or Integrator/PP2 platform, or if you have a
28 Cirrus Logic EP93xx CPU, say Y or M here.
32 config SERIAL_AMBA_PL010_CONSOLE
33 bool "Support for console on AMBA serial port"
34 depends on SERIAL_AMBA_PL010=y
35 select SERIAL_CORE_CONSOLE
37 Say Y here if you wish to use an AMBA PrimeCell UART as the system
38 console (the system console is the device which receives all kernel
39 messages and warnings and which allows logins in single user mode).
41 Even if you say Y here, the currently visible framebuffer console
42 (/dev/tty0) will still be used as the system console by default, but
43 you can alter that using a kernel command line option such as
44 "console=ttyAM0". (Try "man bootparam" or see the documentation of
45 your boot loader (lilo or loadlin) about how to pass options to the
48 config SERIAL_AMBA_PL011
49 tristate "ARM AMBA PL011 serial port support"
53 This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
54 an Integrator/PP2, Integrator/CP or Versatile platform, say Y or M
59 config SERIAL_AMBA_PL011_CONSOLE
60 bool "Support for console on AMBA serial port"
61 depends on SERIAL_AMBA_PL011=y
62 select SERIAL_CORE_CONSOLE
63 select SERIAL_EARLYCON
65 Say Y here if you wish to use an AMBA PrimeCell UART as the system
66 console (the system console is the device which receives all kernel
67 messages and warnings and which allows logins in single user mode).
69 Even if you say Y here, the currently visible framebuffer console
70 (/dev/tty0) will still be used as the system console by default, but
71 you can alter that using a kernel command line option such as
72 "console=ttyAMA0". (Try "man bootparam" or see the documentation of
73 your boot loader (lilo or loadlin) about how to pass options to the
76 config SERIAL_EARLYCON_ARM_SEMIHOST
77 bool "Early console using ARM semihosting"
78 depends on ARM64 || ARM
80 select SERIAL_CORE_CONSOLE
81 select SERIAL_EARLYCON
83 Support for early debug console using ARM semihosting. This enables
84 the console before standard serial driver is probed. This is enabled
85 with "earlycon=smh" on the kernel command line. The console is
86 enabled when early_param is processed.
88 config SERIAL_EARLYCON_RISCV_SBI
89 bool "Early console using RISC-V SBI"
90 depends on RISCV_SBI_V01
92 select SERIAL_CORE_CONSOLE
93 select SERIAL_EARLYCON
95 Support for early debug console using RISC-V SBI. This enables
96 the console before standard serial driver is probed. This is enabled
97 with "earlycon=sbi" on the kernel command line. The console is
98 enabled when early_param is processed.
100 config SERIAL_SB1250_DUART
101 tristate "BCM1xxx on-chip DUART serial support"
102 depends on SIBYTE_SB1xxx_SOC=y
106 Support for the asynchronous serial interface (DUART) included in
107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
108 the letter D in DUART stands for "dual", which is how the device
109 is implemented. Depending on the SOC configuration there may be
110 one or more DUARTs available of which all are handled.
112 If unsure, say Y. To compile this driver as a module, choose M here:
113 the module will be called sb1250-duart.
115 config SERIAL_SB1250_DUART_CONSOLE
116 bool "Support for console on a BCM1xxx DUART serial port"
117 depends on SERIAL_SB1250_DUART=y
118 select SERIAL_CORE_CONSOLE
121 If you say Y here, it will be possible to use a serial port as the
122 system console (the system console is the device which receives all
123 kernel messages and warnings and which allows logins in single user
129 bool "AT91 on-chip serial port support"
130 depends on ARCH_AT91 || COMPILE_TEST
132 select SERIAL_MCTRL_GPIO if GPIOLIB
133 select MFD_AT91_USART
135 This enables the driver for the on-chip UARTs of the Atmel
138 config SERIAL_ATMEL_CONSOLE
139 bool "Support for console on AT91 serial port"
140 depends on SERIAL_ATMEL=y
141 select SERIAL_CORE_CONSOLE
142 select SERIAL_EARLYCON
144 Say Y here if you wish to use an on-chip UART on a Atmel
145 AT91 processor as the system console (the system
146 console is the device which receives all kernel messages and
147 warnings and which allows logins in single user mode).
149 config SERIAL_ATMEL_PDC
150 bool "Support DMA transfers on AT91 serial port"
151 depends on SERIAL_ATMEL
154 Say Y here if you wish to use the PDC to do DMA transfers to
155 and from the Atmel AT91 serial port. In order to
156 actually use DMA transfers, make sure that the use_dma_tx
157 and use_dma_rx members in the atmel_uart_data struct is set
158 appropriately for each port.
160 Note that break and error handling currently doesn't work
161 properly when DMA is enabled. Make sure that ports where
162 this matters don't use DMA.
164 config SERIAL_ATMEL_TTYAT
165 bool "Install as device ttyATn instead of ttySn"
166 depends on SERIAL_ATMEL=y
168 Say Y here if you wish to have the internal AT91 UARTs
169 appear as /dev/ttyATn (major 204, minor starting at 154)
170 instead of the normal /dev/ttySn (major 4, minor starting at
171 64). This is necessary if you also want other UARTs, such as
172 external 8250/16C550 compatible UARTs.
173 The ttySn nodes are legally reserved for the 8250 serial driver
174 but are often misused by other serial drivers.
176 To use this, you should create suitable ttyATn device nodes in
177 /dev/, and pass "console=ttyATn" to the kernel.
179 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
181 config SERIAL_KGDB_NMI
182 bool "Serial console over KGDB NMI debugger port"
183 depends on KGDB_SERIAL_CONSOLE
185 This special driver allows you to temporary use NMI debugger port
186 as a normal console (assuming that the port is attached to KGDB).
188 Unlike KDB's disable_nmi command, with this driver you are always
189 able to go back to the debugger using KGDB escape sequence ($3#33).
190 This is because this console driver processes the input in NMI
191 context, and thus is able to intercept the magic sequence.
193 Note that since the console interprets input and uses polling
194 communication methods, for things like PPP you still must fully
195 detach debugger port from the KGDB NMI (i.e. disable_nmi), and
201 tristate "Meson serial port support"
202 depends on ARCH_MESON || COMPILE_TEST
205 This enables the driver for the on-chip UARTs of the Amlogic
208 config SERIAL_MESON_CONSOLE
209 bool "Support for console on meson"
210 depends on SERIAL_MESON
211 select SERIAL_CORE_CONSOLE
212 select SERIAL_EARLYCON
214 Say Y here if you wish to use a Amlogic MesonX UART as the
215 system console (the system console is the device which
216 receives all kernel messages and warnings and which allows
217 logins in single user mode) as /dev/ttyAMLx.
219 config SERIAL_CLPS711X
220 tristate "CLPS711X serial port support"
221 depends on ARCH_CLPS711X || COMPILE_TEST
223 select SERIAL_MCTRL_GPIO if GPIOLIB
225 This enables the driver for the on-chip UARTs of the Cirrus
226 Logic EP711x/EP721x/EP731x processors.
228 config SERIAL_CLPS711X_CONSOLE
229 bool "Support for console on CLPS711X serial port"
230 depends on SERIAL_CLPS711X=y
231 select SERIAL_CORE_CONSOLE
233 Even if you say Y here, the currently visible virtual console
234 (/dev/tty0) will still be used as the system console by default, but
235 you can alter that using a kernel command line option such as
238 config SERIAL_SAMSUNG
239 tristate "Samsung SoC serial support"
240 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
243 Support for the on-chip UARTs on the Samsung
244 S3C24xx/S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
245 /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
246 these ports, depending on how the serial port pins are configured.
247 Choose Y/M here only if you build for such SoC.
249 config SERIAL_SAMSUNG_UARTS_4
251 depends on SERIAL_SAMSUNG
252 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
254 Internal node for the common case of 4 Samsung compatible UARTs
256 config SERIAL_SAMSUNG_UARTS
258 depends on SERIAL_SAMSUNG
259 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
262 Select the number of available UART ports for the Samsung S3C
265 config SERIAL_SAMSUNG_CONSOLE
266 bool "Support for console on Samsung SoC serial port"
267 depends on SERIAL_SAMSUNG
268 select SERIAL_CORE_CONSOLE
269 select SERIAL_EARLYCON
271 Allow selection of the S3C24XX on-board serial ports for use as
274 Even if you say Y here, the currently visible virtual console
275 (/dev/tty0) will still be used as the system console by default, but
276 you can alter that using a kernel command line option such as
277 "console=ttySACx". (Try "man bootparam" or see the documentation of
278 your boot loader about how to pass options to the kernel at
282 tristate "NVIDIA Tegra20/30 SoC serial controller"
283 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
286 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
287 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
288 provide all of these ports, depending on how the serial port
289 are enabled). This driver uses the APB DMA to achieve higher baudrate
290 and better performance.
292 config SERIAL_TEGRA_TCU
293 tristate "NVIDIA Tegra Combined UART"
295 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
298 Support for the mailbox-based TCU (Tegra Combined UART) serial port.
299 TCU is a virtual serial port that allows multiplexing multiple data
300 streams into a single hardware serial port.
302 config SERIAL_TEGRA_TCU_CONSOLE
303 bool "Support for console on a Tegra TCU serial port"
304 depends on SERIAL_TEGRA_TCU=y
305 select SERIAL_CORE_CONSOLE
308 If you say Y here, it will be possible to use a the Tegra TCU as the
309 system console (the system console is the device which receives all
310 kernel messages and warnings and which allows logins in single user
315 config SERIAL_MAX3100
316 tristate "MAX3100 support"
322 config SERIAL_MAX310X
323 tristate "MAX310X support"
324 depends on SPI_MASTER
326 select REGMAP_SPI if SPI_MASTER
328 This selects support for an advanced UART from Maxim (Dallas).
329 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
330 Each IC contains 128 words each of receive and transmit FIFO
331 that can be controlled through I2C or high-speed SPI.
333 Say Y here if you want to support this ICs.
336 bool "DECstation DZ serial driver"
337 depends on MACH_DECSTATION && 32BIT
341 DZ11-family serial controllers for DECstations and VAXstations,
342 including the DC7085, M7814, and M7819.
344 config SERIAL_DZ_CONSOLE
345 bool "Support console on DECstation DZ serial driver"
346 depends on SERIAL_DZ=y
347 select SERIAL_CORE_CONSOLE
350 If you say Y here, it will be possible to use a serial port as the
351 system console (the system console is the device which receives all
352 kernel messages and warnings and which allows logins in single user
355 Note that the firmware uses ttyS3 as the serial console on
356 DECstations that use this driver.
361 tristate "DECstation Z85C30 serial support"
362 depends on MACH_DECSTATION
366 Support for the Zilog 85C350 serial communications controller used
367 for serial ports in newer DECstation systems. These include the
368 DECsystem 5900 and all models of the DECstation and DECsystem 5000
369 systems except from model 200.
371 If unsure, say Y. To compile this driver as a module, choose M here:
372 the module will be called zs.
374 config SERIAL_ZS_CONSOLE
375 bool "Support for console on a DECstation Z85C30 serial port"
376 depends on SERIAL_ZS=y
377 select SERIAL_CORE_CONSOLE
380 If you say Y here, it will be possible to use a serial port as the
381 system console (the system console is the device which receives all
382 kernel messages and warnings and which allows logins in single user
385 Note that the firmware uses ttyS1 as the serial console on the
386 Maxine and ttyS3 on the others using this driver.
391 tristate "DC21285 serial port support"
392 depends on FOOTBRIDGE
395 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
396 PCI bridge you can enable its onboard serial port by enabling this
399 config SERIAL_21285_CONSOLE
400 bool "Console on DC21285 serial port"
401 depends on SERIAL_21285=y
402 select SERIAL_CORE_CONSOLE
404 If you have enabled the serial port on the 21285 footbridge you can
405 make it the console by answering Y to this option.
407 Even if you say Y here, the currently visible virtual console
408 (/dev/tty0) will still be used as the system console by default, but
409 you can alter that using a kernel command line option such as
410 "console=ttyFB". (Try "man bootparam" or see the documentation of
411 your boot loader (lilo or loadlin) about how to pass options to the
412 kernel at boot time.)
415 bool "PXA serial port support (DEPRECATED)"
416 depends on ARCH_PXA || ARCH_MMP
418 select SERIAL_8250_PXA if SERIAL_8250=y
419 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
421 If you have a machine based on an Intel XScale PXA2xx CPU you
422 can enable its onboard serial ports by enabling this option.
424 Unless you have a specific need, you should use SERIAL_8250_PXA
427 config SERIAL_PXA_NON8250
429 depends on !SERIAL_8250
431 config SERIAL_PXA_CONSOLE
432 bool "Console on PXA serial port (DEPRECATED)"
433 depends on SERIAL_PXA
434 select SERIAL_CORE_CONSOLE
435 select SERIAL_8250_CONSOLE if SERIAL_8250=y
437 If you have enabled the serial port on the Intel XScale PXA
438 CPU you can make it the console by answering Y to this option.
440 Even if you say Y here, the currently visible virtual console
441 (/dev/tty0) will still be used as the system console by default, but
442 you can alter that using a kernel command line option such as
443 "console=ttySA0". (Try "man bootparam" or see the documentation of
444 your boot loader (lilo or loadlin) about how to pass options to the
445 kernel at boot time.)
447 Unless you have a specific need, you should use SERIAL_8250_PXA
448 and SERIAL_8250_CONSOLE instead of this.
451 bool "SA1100 serial port support"
452 depends on ARCH_SA1100
454 select SERIAL_MCTRL_GPIO if GPIOLIB
456 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
457 can enable its onboard serial port by enabling this option.
458 Please read <file:Documentation/arm/sa1100/serial_uart.rst> for further
461 config SERIAL_SA1100_CONSOLE
462 bool "Console on SA1100 serial port"
463 depends on SERIAL_SA1100
464 select SERIAL_CORE_CONSOLE
466 If you have enabled the serial port on the SA1100/SA1110 StrongARM
467 CPU you can make it the console by answering Y to this option.
469 Even if you say Y here, the currently visible virtual console
470 (/dev/tty0) will still be used as the system console by default, but
471 you can alter that using a kernel command line option such as
472 "console=ttySA0". (Try "man bootparam" or see the documentation of
473 your boot loader (lilo or loadlin) about how to pass options to the
474 kernel at boot time.)
477 tristate "IMX serial port support"
478 depends on ARCH_MXC || COMPILE_TEST
481 select SERIAL_MCTRL_GPIO if GPIOLIB
483 If you have a machine based on a Motorola IMX CPU you
484 can enable its onboard serial port by enabling this option.
486 config SERIAL_IMX_CONSOLE
487 tristate "Console on IMX serial port"
488 depends on SERIAL_IMX
489 select SERIAL_CORE_CONSOLE
491 If you have enabled the serial port on the Freescale IMX
492 CPU you can make it the console by answering Y/M to this option.
494 Even if you say Y/M here, the currently visible virtual console
495 (/dev/tty0) will still be used as the system console by default, but
496 you can alter that using a kernel command line option such as
497 "console=ttymxc0". (Try "man bootparam" or see the documentation of
498 your bootloader about how to pass options to the kernel at boot time.)
500 config SERIAL_IMX_EARLYCON
501 bool "Earlycon on IMX serial port"
502 depends on ARCH_MXC || COMPILE_TEST
505 select SERIAL_EARLYCON
506 select SERIAL_CORE_CONSOLE
507 default y if SERIAL_IMX_CONSOLE
509 If you have enabled the earlycon on the Freescale IMX
510 CPU you can make it the earlycon by answering Y to this option.
512 config SERIAL_UARTLITE
513 tristate "Xilinx uartlite serial port support"
517 Say Y here if you want to use the Xilinx uartlite serial controller.
519 To compile this driver as a module, choose M here: the
520 module will be called uartlite.
522 config SERIAL_UARTLITE_CONSOLE
523 bool "Support for console on Xilinx uartlite serial port"
524 depends on SERIAL_UARTLITE=y
525 select SERIAL_CORE_CONSOLE
526 select SERIAL_EARLYCON
528 Say Y here if you wish to use a Xilinx uartlite as the system
529 console (the system console is the device which receives all kernel
530 messages and warnings and which allows logins in single user mode).
532 config SERIAL_UARTLITE_NR_UARTS
533 int "Maximum number of uartlite serial ports"
534 depends on SERIAL_UARTLITE
538 Set this to the number of uartlites in your system, or the number
539 you think you might implement.
541 config SERIAL_SUNCORE
545 select SERIAL_CORE_CONSOLE
548 config SERIAL_SUNZILOG
549 tristate "Sun Zilog8530 serial support"
552 This driver supports the Zilog8530 serial ports found on many Sparc
553 systems. Say Y or M if you want to be able to these serial ports.
555 config SERIAL_SUNZILOG_CONSOLE
556 bool "Console on Sun Zilog8530 serial port"
557 depends on SERIAL_SUNZILOG=y
559 If you would like to be able to use the Zilog8530 serial port
560 on your Sparc system as the console, you can do so by answering
564 tristate "Sun SU serial support"
565 depends on SPARC && PCI
567 This driver supports the 8250 serial ports that run the keyboard and
568 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
569 to these serial ports.
571 config SERIAL_SUNSU_CONSOLE
572 bool "Console on Sun SU serial port"
573 depends on SERIAL_SUNSU=y
575 If you would like to be able to use the SU serial port
576 on your Sparc system as the console, you can do so by answering
580 tristate "Serial MUX support"
585 Saying Y here will enable the hardware MUX serial driver for
586 the Nova, K class systems and D class with a 'remote control card'.
587 The hardware MUX is not 8250/16550 compatible therefore the
588 /dev/ttyB0 device is shared between the Serial MUX and the PDC
589 software console. The following steps need to be completed to use
592 1. create the device entry (mknod /dev/ttyB0 c 11 0)
593 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
594 3. Add device ttyB0 to /etc/securetty (if you want to log on as
595 root on this console.)
596 4. Change the kernel command console parameter to: console=ttyB0
598 config SERIAL_MUX_CONSOLE
599 bool "Support for console on serial MUX"
600 depends on SERIAL_MUX=y
601 select SERIAL_CORE_CONSOLE
605 bool "PDC software console support"
606 depends on PARISC && !SERIAL_MUX && VT
608 Saying Y here will enable the software based PDC console to be
609 used as the system console. This is useful for machines in
610 which the hardware based console has not been written yet. The
611 following steps must be completed to use the PDC console:
613 1. create the device entry (mknod /dev/ttyB0 c 11 0)
614 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
615 3. Add device ttyB0 to /etc/securetty (if you want to log on as
616 root on this console.)
617 4. Change the kernel command console parameter to: console=ttyB0
620 tristate "Sun Siemens SAB82532 serial support"
621 depends on SPARC && PCI
623 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
624 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
627 config SERIAL_SUNSAB_CONSOLE
628 bool "Console on Sun Siemens SAB82532 serial port"
629 depends on SERIAL_SUNSAB=y
631 If you would like to be able to use the SAB82532 serial port
632 on your Sparc system as the console, you can do so by answering
636 bool "Sun4v Hypervisor Console support"
639 This driver supports the console device found on SUN4V Sparc
640 systems. Say Y if you want to be able to use this device.
642 config SERIAL_IP22_ZILOG
643 tristate "SGI Zilog8530 serial support"
644 depends on SGI_HAS_ZILOG
647 This driver supports the Zilog8530 serial ports found on SGI
648 systems. Say Y or M if you want to be able to these serial ports.
650 config SERIAL_IP22_ZILOG_CONSOLE
651 bool "Console on SGI Zilog8530 serial port"
652 depends on SERIAL_IP22_ZILOG=y
653 select SERIAL_CORE_CONSOLE
656 tristate "SuperH SCI(F) serial port support"
657 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
659 select SERIAL_MCTRL_GPIO if GPIOLIB
661 config SERIAL_SH_SCI_NR_UARTS
662 int "Maximum number of SCI(F) serial ports" if EXPERT
665 depends on SERIAL_SH_SCI
667 default "10" if SUPERH
668 default "18" if ARCH_RENESAS
671 config SERIAL_SH_SCI_CONSOLE
672 bool "Support for console on SuperH SCI(F)" if EXPERT
673 depends on SERIAL_SH_SCI=y
674 select SERIAL_CORE_CONSOLE
677 config SERIAL_SH_SCI_EARLYCON
678 bool "Support for early console on SuperH SCI(F)" if EXPERT
679 depends on SERIAL_SH_SCI=y
680 select SERIAL_CORE_CONSOLE
681 select SERIAL_EARLYCON
682 default ARCH_RENESAS || H8300
684 config SERIAL_SH_SCI_DMA
685 bool "DMA support" if EXPERT
686 depends on SERIAL_SH_SCI && DMA_ENGINE
689 config SERIAL_HS_LPC32XX
690 tristate "LPC32XX high speed serial port support"
691 depends on ARCH_LPC32XX || COMPILE_TEST
695 Support for the LPC32XX high speed serial ports (up to 900kbps).
696 Those are UARTs completely different from the Standard UARTs on the
698 Choose M or Y here to build this driver.
700 config SERIAL_HS_LPC32XX_CONSOLE
701 bool "Enable LPC32XX high speed UART serial console"
702 depends on SERIAL_HS_LPC32XX=y
703 select SERIAL_CORE_CONSOLE
705 If you would like to be able to use one of the high speed serial
706 ports on the LPC32XX as the console, you can do so by answering
712 config SERIAL_CORE_CONSOLE
719 bool "Coldfire serial support"
723 This serial driver supports the Freescale Coldfire serial ports.
725 config SERIAL_MCF_BAUDRATE
726 int "Default baudrate for Coldfire serial ports"
727 depends on SERIAL_MCF
730 This setting lets you define what the default baudrate is for the
731 ColdFire serial ports. The usual default varies from board to board,
732 and this setting is a way of catering for that.
734 config SERIAL_MCF_CONSOLE
735 bool "Coldfire serial console support"
736 depends on SERIAL_MCF
737 select SERIAL_CORE_CONSOLE
739 Enable a ColdFire internal serial port to be the system console.
741 config SERIAL_PMACZILOG
742 tristate "Mac or PowerMac z85c30 ESCC support"
743 depends on (M68K && MAC) || PPC_PMAC
746 This driver supports the Zilog z85C30 serial ports found on
748 Say Y or M if you want to be able to these serial ports.
750 config SERIAL_PMACZILOG_TTYS
751 bool "Use ttySn device nodes for Zilog z85c30"
752 depends on SERIAL_PMACZILOG
754 The pmac_zilog driver for the z85C30 chip on many powermacs
755 historically used the device numbers for /dev/ttySn. The
756 8250 serial port driver also uses these numbers, which means
757 the two drivers being unable to coexist; you could not use
758 both z85C30 and 8250 type ports at the same time.
760 If this option is not selected, the pmac_zilog driver will
761 use the device numbers allocated for /dev/ttyPZn. This allows
762 the pmac_zilog and 8250 drivers to co-exist, but may cause
763 existing userspace setups to break. Programs that need to
764 access the built-in serial ports on powermacs will need to
765 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
767 If you enable this option, any z85c30 ports in the system will
768 be registered as ttyS0 onwards as in the past, and you will be
769 unable to use the 8250 module for PCMCIA or other 16C550-style
772 Say N unless you need the z85c30 ports on your (Power)Mac
773 to appear as /dev/ttySn.
775 config SERIAL_PMACZILOG_CONSOLE
776 bool "Console on Mac or PowerMac z85c30 serial port"
777 depends on SERIAL_PMACZILOG=y
778 select SERIAL_CORE_CONSOLE
780 If you would like to be able to use the z85c30 serial port
781 on your (Power)Mac as the console, you can do so by answering
785 tristate "CPM SCC/SMC serial port support"
786 depends on CPM2 || CPM1
789 This driver supports the SCC and SMC serial ports on Motorola
790 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
792 config SERIAL_CPM_CONSOLE
793 bool "Support for console on CPM SCC/SMC serial port"
794 depends on SERIAL_CPM=y
795 select SERIAL_CORE_CONSOLE
797 Say Y here if you wish to use a SCC or SMC CPM UART as the system
798 console (the system console is the device which receives all kernel
799 messages and warnings and which allows logins in single user mode).
801 Even if you say Y here, the currently visible framebuffer console
802 (/dev/tty0) will still be used as the system console by default, but
803 you can alter that using a kernel command line option such as
804 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
805 your boot loader (lilo or loadlin) about how to pass options to the
806 kernel at boot time.)
809 tristate "Microchip PIC32 serial support"
810 depends on MACH_PIC32
813 If you have a PIC32, this driver supports the serial ports.
815 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
816 to use a serial port as a console, this must be included in kernel and
819 config SERIAL_PIC32_CONSOLE
820 bool "PIC32 serial console support"
821 depends on SERIAL_PIC32
822 select SERIAL_CORE_CONSOLE
824 If you have a PIC32, this driver supports the putting a console on one
827 Say Y to use the PIC32 console, otherwise say N.
829 config SERIAL_MPC52xx
830 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
831 depends on PPC_MPC52xx || PPC_MPC512x
834 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
835 like to use them, you must answer Y or M to this option. Note that
836 for use as console, it must be included in kernel and not as a
839 config SERIAL_MPC52xx_CONSOLE
840 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
841 depends on SERIAL_MPC52xx=y
842 select SERIAL_CORE_CONSOLE
844 Select this options if you'd like to use one of the PSC serial port
845 of the Freescale MPC52xx family as a console.
847 config SERIAL_MPC52xx_CONSOLE_BAUD
848 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
849 depends on SERIAL_MPC52xx_CONSOLE=y
852 Select the MPC52xx console baud rate.
853 This value is only used if the bootloader doesn't pass in the
857 tristate "IBM Multiport Serial Adapter"
859 depends on PPC_PSERIES || COMPILE_TEST
863 This driver is for a family of multiport serial adapters
864 including 2 port RVX, 2 port internal modem, 4 port internal
865 modem and a split 1 port RVX and 1 port internal modem.
867 This driver can also be built as a module. If so, the module
871 bool "TMPTX39XX/49XX SIO support"
872 depends on HAS_TXX9_SERIAL
876 config HAS_TXX9_SERIAL
879 config SERIAL_TXX9_NR_UARTS
880 int "Maximum number of TMPTX39XX/49XX SIO ports"
881 depends on SERIAL_TXX9
884 config SERIAL_TXX9_CONSOLE
885 bool "TMPTX39XX/49XX SIO Console support"
886 depends on SERIAL_TXX9=y
887 select SERIAL_CORE_CONSOLE
889 config SERIAL_TXX9_STDSERIAL
890 bool "TX39XX/49XX SIO act as standard serial"
891 depends on !SERIAL_8250 && SERIAL_TXX9
894 tristate "NEC VR4100 series Serial Interface Unit support"
895 depends on CPU_VR41XX
898 If you have a NEC VR4100 series processor and you want to use
899 Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
900 (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
902 config SERIAL_VR41XX_CONSOLE
903 bool "Enable NEC VR4100 series Serial Interface Unit console"
904 depends on SERIAL_VR41XX=y
905 select SERIAL_CORE_CONSOLE
907 If you have a NEC VR4100 series processor and you want to use
908 a console on a serial port, say Y. Otherwise, say N.
911 tristate "Digi International NEO and Classic PCI Support"
915 This is a driver for Digi International's Neo and Classic series
916 of cards which provide multiple serial ports. You would need
917 something like this to connect more than two modems to your Linux
918 box, for instance in order to become a dial-in server. This driver
919 supports PCI boards only.
921 If you have a card like this, say Y here, otherwise say N.
923 To compile this driver as a module, choose M here: the
924 module will be called jsm.
927 tristate "MSM on-chip serial port support"
928 depends on ARCH_QCOM || COMPILE_TEST
931 config SERIAL_MSM_CONSOLE
932 bool "MSM serial console support"
933 depends on SERIAL_MSM=y
934 select SERIAL_CORE_CONSOLE
935 select SERIAL_EARLYCON
937 config SERIAL_QCOM_GENI
938 tristate "QCOM on-chip GENI based serial port support"
939 depends on ARCH_QCOM || COMPILE_TEST
940 depends on QCOM_GENI_SE
943 config SERIAL_QCOM_GENI_CONSOLE
944 bool "QCOM GENI Serial Console support"
945 depends on SERIAL_QCOM_GENI
946 select SERIAL_CORE_CONSOLE
947 select SERIAL_EARLYCON
949 Serial console driver for Qualcomm Technologies Inc's GENI based
953 bool "VIA VT8500 on-chip serial port support"
954 depends on ARCH_VT8500 || COMPILE_TEST
957 config SERIAL_VT8500_CONSOLE
958 bool "VIA VT8500 serial console support"
959 depends on SERIAL_VT8500=y
960 select SERIAL_CORE_CONSOLE
963 tristate "OMAP serial port support"
964 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
967 If you have a machine based on an Texas Instruments OMAP CPU you
968 can enable its onboard serial ports by enabling this option.
970 By enabling this option you take advantage of dma feature available
971 with the omap-serial driver. DMA support can be enabled from platform
974 config SERIAL_OMAP_CONSOLE
975 bool "Console on OMAP serial port"
976 depends on SERIAL_OMAP=y
977 select SERIAL_CORE_CONSOLE
979 Select this option if you would like to use omap serial port as
982 Even if you say Y here, the currently visible virtual console
983 (/dev/tty0) will still be used as the system console by default, but
984 you can alter that using a kernel command line option such as
985 "console=ttyOx". (Try "man bootparam" or see the documentation of
986 your boot loader about how to pass options to the kernel at
990 tristate "SiFive UART support"
994 Select this option if you are building a kernel for a device that
995 contains a SiFive UART IP block. This type of UART is present on
996 SiFive FU540 SoCs, among others.
998 config SERIAL_SIFIVE_CONSOLE
999 bool "Console on SiFive UART"
1000 depends on SERIAL_SIFIVE=y
1001 select SERIAL_CORE_CONSOLE
1002 select SERIAL_EARLYCON
1004 Select this option if you would like to use a SiFive UART as the
1007 Even if you say Y here, the currently visible virtual console
1008 (/dev/tty0) will still be used as the system console by default, but
1009 you can alter that using a kernel command line option such as
1010 "console=ttySIFx". (Try "man bootparam" or see the documentation of
1011 your boot loader about how to pass options to the kernel at
1014 config SERIAL_LANTIQ
1015 tristate "Lantiq serial driver"
1016 depends on (LANTIQ || X86) || COMPILE_TEST
1019 Support for UART on Lantiq and Intel SoCs.
1020 To compile this driver as a module, select M here. The
1021 module will be called lantiq.
1023 config SERIAL_LANTIQ_CONSOLE
1024 bool "Console on Lantiq UART"
1025 depends on SERIAL_LANTIQ=y
1026 select SERIAL_CORE_CONSOLE
1027 select SERIAL_EARLYCON
1029 Select this option if you would like to use a Lantiq UART as the
1033 tristate "Freescale QUICC Engine serial port support"
1034 depends on QUICC_ENGINE
1038 This driver supports the QE serial ports on Freescale embedded
1039 PowerPC that contain a QUICC Engine.
1041 config SERIAL_SCCNXP
1042 tristate "SCCNXP serial port support"
1045 This selects support for an advanced UART from NXP (Philips).
1046 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1047 SC28L202, SCC68681 and SCC68692.
1049 config SERIAL_SCCNXP_CONSOLE
1050 bool "Console on SCCNXP serial port"
1051 depends on SERIAL_SCCNXP=y
1052 select SERIAL_CORE_CONSOLE
1054 Support for console on SCCNXP serial ports.
1056 config SERIAL_SC16IS7XX_CORE
1059 config SERIAL_SC16IS7XX
1060 tristate "SC16IS7xx serial support"
1062 depends on (SPI_MASTER && !I2C) || I2C
1064 This selects support for SC16IS7xx serial ports.
1065 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1066 SC16IS760 and SC16IS762. Select supported buses using options below.
1068 config SERIAL_SC16IS7XX_I2C
1069 bool "SC16IS7xx for I2C interface"
1070 depends on SERIAL_SC16IS7XX
1072 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1073 select REGMAP_I2C if I2C
1076 Enable SC16IS7xx driver on I2C bus,
1077 If required say y, and say n to i2c if not required,
1078 Enabled by default to support oldconfig.
1079 You must select at least one bus for the driver to be built.
1081 config SERIAL_SC16IS7XX_SPI
1082 bool "SC16IS7xx for spi interface"
1083 depends on SERIAL_SC16IS7XX
1084 depends on SPI_MASTER
1085 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1086 select REGMAP_SPI if SPI_MASTER
1088 Enable SC16IS7xx driver on SPI bus,
1089 If required say y, and say n to spi if not required,
1090 This is additional support to existing driver.
1091 You must select at least one bus for the driver to be built.
1093 config SERIAL_TIMBERDALE
1094 tristate "Support for timberdale UART"
1096 depends on X86_32 || COMPILE_TEST
1098 Add support for UART controller on timberdale.
1100 config SERIAL_BCM63XX
1101 tristate "Broadcom BCM63xx/BCM33xx UART support"
1103 depends on ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1104 default ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
1106 This enables the driver for the onchip UART core found on
1107 the following chipsets:
1109 BCM33xx (cable modem)
1110 BCM63xx/BCM63xxx (DSL)
1112 BCM7xxx (STB) - DOCSIS console
1114 config SERIAL_BCM63XX_CONSOLE
1115 bool "Console on BCM63xx serial port"
1116 depends on SERIAL_BCM63XX=y
1117 select SERIAL_CORE_CONSOLE
1118 select SERIAL_EARLYCON
1120 If you have enabled the serial port on the BCM63xx CPU
1121 you can make it the console by answering Y to this option.
1123 config SERIAL_GRLIB_GAISLER_APBUART
1124 tristate "GRLIB APBUART serial support"
1125 depends on OF && SPARC
1128 Add support for the GRLIB APBUART serial port.
1130 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1131 bool "Console on GRLIB APBUART serial port"
1132 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1133 select SERIAL_CORE_CONSOLE
1135 Support for running a console on the GRLIB APBUART
1137 config SERIAL_ALTERA_JTAGUART
1138 tristate "Altera JTAG UART support"
1141 This driver supports the Altera JTAG UART port.
1143 config SERIAL_ALTERA_JTAGUART_CONSOLE
1144 bool "Altera JTAG UART console support"
1145 depends on SERIAL_ALTERA_JTAGUART=y
1146 select SERIAL_CORE_CONSOLE
1147 select SERIAL_EARLYCON
1149 Enable a Altera JTAG UART port to be the system console.
1151 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1152 bool "Bypass output when no connection"
1153 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1154 select SERIAL_CORE_CONSOLE
1156 Bypass console output and keep going even if there is no
1157 JTAG terminal connection with the host.
1159 config SERIAL_ALTERA_UART
1160 tristate "Altera UART support"
1163 This driver supports the Altera softcore UART port.
1165 config SERIAL_ALTERA_UART_MAXPORTS
1166 int "Maximum number of Altera UART ports"
1167 depends on SERIAL_ALTERA_UART
1170 This setting lets you define the maximum number of the Altera
1171 UART ports. The usual default varies from board to board, and
1172 this setting is a way of catering for that.
1174 config SERIAL_ALTERA_UART_BAUDRATE
1175 int "Default baudrate for Altera UART ports"
1176 depends on SERIAL_ALTERA_UART
1179 This setting lets you define what the default baudrate is for the
1180 Altera UART ports. The usual default varies from board to board,
1181 and this setting is a way of catering for that.
1183 config SERIAL_ALTERA_UART_CONSOLE
1184 bool "Altera UART console support"
1185 depends on SERIAL_ALTERA_UART=y
1186 select SERIAL_CORE_CONSOLE
1187 select SERIAL_EARLYCON
1189 Enable a Altera UART port to be the system console.
1191 config SERIAL_PCH_UART
1192 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1193 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1196 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1197 which is an IOH(Input/Output Hub) for x86 embedded processor.
1198 Enabling PCH_DMA, this PCH UART works as DMA mode.
1200 This driver also can be used for LAPIS Semiconductor IOH(Input/
1201 Output Hub), ML7213, ML7223 and ML7831.
1202 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1203 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1204 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1205 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1207 config SERIAL_PCH_UART_CONSOLE
1208 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1209 depends on SERIAL_PCH_UART=y
1210 select SERIAL_CORE_CONSOLE
1212 Say Y here if you wish to use the PCH UART as the system console
1213 (the system console is the device which receives all kernel messages and
1214 warnings and which allows logins in single user mode).
1216 config SERIAL_MXS_AUART
1217 tristate "MXS AUART support"
1218 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1220 select SERIAL_MCTRL_GPIO if GPIOLIB
1222 This driver supports the MXS and Alphascale ASM9260 Application
1225 config SERIAL_MXS_AUART_CONSOLE
1226 bool "MXS AUART console support"
1227 depends on SERIAL_MXS_AUART=y
1228 select SERIAL_CORE_CONSOLE
1230 Enable a MXS AUART port to be the system console.
1232 config SERIAL_XILINX_PS_UART
1233 tristate "Cadence (Xilinx Zynq) UART support"
1237 This driver supports the Cadence UART. It is found e.g. in Xilinx
1240 config SERIAL_XILINX_PS_UART_CONSOLE
1241 bool "Cadence UART console support"
1242 depends on SERIAL_XILINX_PS_UART=y
1243 select SERIAL_CORE_CONSOLE
1244 select SERIAL_EARLYCON
1246 Enable a Cadence UART port to be the system console.
1248 config SERIAL_AR933X
1249 tristate "AR933X serial port support"
1250 depends on HAVE_CLK && ATH79
1252 select SERIAL_MCTRL_GPIO if GPIOLIB
1254 If you have an Atheros AR933X SOC based board and want to use the
1255 built-in UART of the SoC, say Y to this option.
1257 To compile this driver as a module, choose M here: the
1258 module will be called ar933x_uart.
1260 config SERIAL_AR933X_CONSOLE
1261 bool "Console on AR933X serial port"
1262 depends on SERIAL_AR933X=y
1263 select SERIAL_CORE_CONSOLE
1265 Enable a built-in UART port of the AR933X to be the system console.
1267 config SERIAL_AR933X_NR_UARTS
1268 int "Maximum number of AR933X serial ports"
1269 depends on SERIAL_AR933X
1272 Set this to the number of serial ports you want the driver
1275 config SERIAL_MPS2_UART_CONSOLE
1276 bool "MPS2 UART console support"
1277 depends on SERIAL_MPS2_UART
1278 select SERIAL_CORE_CONSOLE
1279 select SERIAL_EARLYCON
1281 config SERIAL_MPS2_UART
1282 bool "MPS2 UART port"
1283 depends on ARCH_MPS2 || COMPILE_TEST
1286 This driver support the UART ports on ARM MPS2.
1289 tristate "ARC UART driver support"
1292 Driver for on-chip UART for ARC(Synopsys) for the legacy
1293 FPGA Boards (ML50x/ARCAngel4)
1295 config SERIAL_ARC_CONSOLE
1296 bool "Console on ARC UART"
1297 depends on SERIAL_ARC=y
1298 select SERIAL_CORE_CONSOLE
1299 select SERIAL_EARLYCON
1301 Enable system Console on ARC UART
1303 config SERIAL_ARC_NR_PORTS
1304 int "Number of ARC UART ports"
1305 depends on SERIAL_ARC
1309 Set this to the number of serial ports you want the driver
1313 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1317 This driver supports the Comtrol RocketPort EXPRESS and
1318 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1319 These adapters use a "RocketPort 2" ASIC that is not compatible
1320 with the original RocketPort driver (CONFIG_ROCKETPORT).
1322 To compile this driver as a module, choose M here: the
1323 module will be called rp2.
1325 If you want to compile this driver into the kernel, say Y here. If
1326 you don't have a suitable RocketPort card installed, say N.
1328 config SERIAL_RP2_NR_UARTS
1329 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1330 depends on SERIAL_RP2
1333 If multiple cards are present, the default limit of 32 ports may
1334 need to be increased.
1336 config SERIAL_FSL_LPUART
1337 tristate "Freescale lpuart serial port support"
1341 Support for the on-chip lpuart on some Freescale SOCs.
1343 config SERIAL_FSL_LPUART_CONSOLE
1344 bool "Console on Freescale lpuart serial port"
1345 depends on SERIAL_FSL_LPUART=y
1346 select SERIAL_CORE_CONSOLE
1347 select SERIAL_EARLYCON
1349 If you have enabled the lpuart serial port on the Freescale SoCs,
1350 you can make it the console by answering Y to this option.
1352 config SERIAL_FSL_LINFLEXUART
1353 tristate "Freescale LINFlexD UART serial port support"
1357 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1359 config SERIAL_FSL_LINFLEXUART_CONSOLE
1360 bool "Console on Freescale LINFlexD UART serial port"
1361 depends on SERIAL_FSL_LINFLEXUART=y
1362 select SERIAL_CORE_CONSOLE
1363 select SERIAL_EARLYCON
1365 If you have enabled the LINFlexD UART serial port on the Freescale
1366 SoCs, you can make it the console by answering Y to this option.
1368 config SERIAL_CONEXANT_DIGICOLOR
1369 tristate "Conexant Digicolor CX92xxx USART serial port support"
1373 Support for the on-chip USART on Conexant Digicolor SoCs.
1375 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1376 bool "Console on Conexant Digicolor serial port"
1377 depends on SERIAL_CONEXANT_DIGICOLOR=y
1378 select SERIAL_CORE_CONSOLE
1380 If you have enabled the USART serial port on Conexant Digicolor
1381 SoCs, you can make it the console by answering Y to this option.
1383 config SERIAL_ST_ASC
1384 tristate "ST ASC serial port support"
1386 depends on ARM || COMPILE_TEST
1388 This driver is for the on-chip Asynchronous Serial Controller on
1389 STMicroelectronics STi SoCs.
1390 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1391 It support all industry standard baud rates.
1395 config SERIAL_ST_ASC_CONSOLE
1396 bool "Support for console on ST ASC"
1397 depends on SERIAL_ST_ASC=y
1398 select SERIAL_CORE_CONSOLE
1400 config SERIAL_MEN_Z135
1401 tristate "MEN 16z135 Support"
1405 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1408 This driver can also be build as a module. If so, the module will be called
1412 tristate "Support for Spreadtrum serial"
1414 depends on COMMON_CLK
1416 This enables the driver for the Spreadtrum's serial.
1418 config SERIAL_SPRD_CONSOLE
1419 bool "Spreadtrum UART console support"
1420 depends on SERIAL_SPRD=y
1421 select SERIAL_CORE_CONSOLE
1422 select SERIAL_EARLYCON
1424 Support for early debug console using Spreadtrum's serial. This enables
1425 the console before standard serial driver is probed. This is enabled
1426 with "earlycon" on the kernel command line. The console is
1427 enabled when early_param is processed.
1430 tristate "STMicroelectronics STM32 serial port support"
1432 depends on ARCH_STM32 || COMPILE_TEST
1433 select SERIAL_MCTRL_GPIO if GPIOLIB
1435 This driver is for the on-chip Serial Controller on
1436 STMicroelectronics STM32 MCUs.
1437 USART supports Rx & Tx functionality.
1438 It support all industry standard baud rates.
1442 config SERIAL_STM32_CONSOLE
1443 bool "Support for console on STM32"
1444 depends on SERIAL_STM32=y
1445 select SERIAL_CORE_CONSOLE
1447 config SERIAL_MVEBU_UART
1448 bool "Marvell EBU serial port support"
1449 depends on ARCH_MVEBU || COMPILE_TEST
1450 depends on COMMON_CLK
1453 This driver is for Marvell EBU SoC's UART. If you have a machine
1454 based on the Armada-3700 SoC and wish to use the on-board serial
1459 config SERIAL_MVEBU_CONSOLE
1460 bool "Console on Marvell EBU serial port"
1461 depends on SERIAL_MVEBU_UART
1462 select SERIAL_CORE_CONSOLE
1463 select SERIAL_EARLYCON
1466 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1467 (the system console is the device which receives all kernel messages
1468 and warnings and which allows logins in single user mode)
1472 tristate "Actions Semi Owl serial port support"
1473 depends on ARCH_ACTIONS || COMPILE_TEST
1476 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1477 Say 'Y' here if you wish to use the on-board serial port.
1480 config SERIAL_OWL_CONSOLE
1481 bool "Console on Actions Semi Owl serial port"
1482 depends on SERIAL_OWL=y
1483 select SERIAL_CORE_CONSOLE
1484 select SERIAL_EARLYCON
1487 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1488 as the system console.
1491 bool "RDA Micro serial port support"
1492 depends on ARCH_RDA || COMPILE_TEST
1495 This driver is for RDA8810PL SoC's UART.
1496 Say 'Y' here if you wish to use the on-board serial port.
1499 config SERIAL_RDA_CONSOLE
1500 bool "Console on RDA Micro serial port"
1501 depends on SERIAL_RDA=y
1502 select SERIAL_CORE_CONSOLE
1503 select SERIAL_EARLYCON
1506 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1507 console. Only earlycon is implemented currently.
1509 config SERIAL_MILBEAUT_USIO
1510 tristate "Milbeaut USIO/UART serial port support"
1511 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1512 default ARCH_MILBEAUT
1515 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1517 config SERIAL_MILBEAUT_USIO_PORTS
1518 int "Maximum number of CSIO/UART ports (1-8)"
1520 depends on SERIAL_MILBEAUT_USIO
1523 config SERIAL_MILBEAUT_USIO_CONSOLE
1524 bool "Support for console on MILBEAUT USIO/UART serial port"
1525 depends on SERIAL_MILBEAUT_USIO=y
1527 select SERIAL_CORE_CONSOLE
1528 select SERIAL_EARLYCON
1530 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1531 SoCs as the system console (the system console is the device which
1532 receives all kernel messages and warnings and which allows logins in
1535 config SERIAL_LITEUART
1536 tristate "LiteUART serial port support"
1537 depends on HAS_IOMEM
1538 depends on OF || COMPILE_TEST
1539 depends on LITEX || COMPILE_TEST
1542 This driver is for the FPGA-based LiteUART serial controller from LiteX
1545 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1548 config SERIAL_LITEUART_MAX_PORTS
1549 int "Maximum number of LiteUART ports"
1550 depends on SERIAL_LITEUART
1553 Set this to the maximum number of serial ports you want the driver
1556 config SERIAL_LITEUART_CONSOLE
1557 bool "LiteUART serial port console support"
1558 depends on SERIAL_LITEUART=y
1559 select SERIAL_CORE_CONSOLE
1560 select SERIAL_EARLYCON
1562 Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1563 controller from LiteX SoC builder as the system console
1564 (the system console is the device which receives all kernel messages
1565 and warnings and which allows logins in single user mode).
1568 config SERIAL_SUNPLUS
1569 tristate "Sunplus UART support"
1570 depends on ARCH_SUNPLUS || COMPILE_TEST
1573 Select this option if you would like to use Sunplus serial port on
1575 If you enable this option, Sunplus serial ports in the system will
1576 be registered as ttySUPx.
1577 This driver can also be built as a module. If so, the module will be
1578 called sunplus-uart.
1580 config SERIAL_SUNPLUS_CONSOLE
1581 bool "Console on Sunplus UART"
1582 depends on SERIAL_SUNPLUS
1583 select SERIAL_CORE_CONSOLE
1584 select SERIAL_EARLYCON
1586 Select this option if you would like to use a Sunplus UART as the
1588 Even if you say Y here, the currently visible virtual console
1589 (/dev/tty0) will still be used as the system console by default, but
1590 you can alter that using a kernel command line option such as
1595 config SERIAL_MCTRL_GPIO