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"
26 This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have
27 an Integrator/AP or Integrator/PP2 platform, or if you have a
28 Cirrus Logic EP93xx CPU, say Y or M here.
32 config SERIAL_AMBA_PL010_CONSOLE
33 bool "Support for console on AMBA serial port"
34 depends on SERIAL_AMBA_PL010=y
35 select SERIAL_CORE_CONSOLE
37 Say Y here if you wish to use an AMBA PrimeCell UART as the system
38 console (the system console is the device which receives all kernel
39 messages and warnings and which allows logins in single user mode).
41 Even if you say Y here, the currently visible framebuffer console
42 (/dev/tty0) will still be used as the system console by default, but
43 you can alter that using a kernel command line option such as
44 "console=ttyAM0". (Try "man bootparam" or see the documentation of
45 your boot loader (lilo or loadlin) about how to pass options to the
48 config SERIAL_AMBA_PL011
49 tristate "ARM AMBA PL011 serial port support"
53 This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
54 an Integrator/PP2, Integrator/CP or Versatile platform, say Y or M
59 config SERIAL_AMBA_PL011_CONSOLE
60 bool "Support for console on AMBA serial port"
61 depends on SERIAL_AMBA_PL011=y
62 select SERIAL_CORE_CONSOLE
63 select SERIAL_EARLYCON
65 Say Y here if you wish to use an AMBA PrimeCell UART as the system
66 console (the system console is the device which receives all kernel
67 messages and warnings and which allows logins in single user mode).
69 Even if you say Y here, the currently visible framebuffer console
70 (/dev/tty0) will still be used as the system console by default, but
71 you can alter that using a kernel command line option such as
72 "console=ttyAMA0". (Try "man bootparam" or see the documentation of
73 your boot loader (lilo or loadlin) about how to pass options to the
76 config SERIAL_EARLYCON_ARM_SEMIHOST
77 bool "Early console using ARM semihosting"
78 depends on ARM64 || ARM
80 select SERIAL_CORE_CONSOLE
81 select SERIAL_EARLYCON
83 Support for early debug console using ARM semihosting. This enables
84 the console before standard serial driver is probed. This is enabled
85 with "earlycon=smh" on the kernel command line. The console is
86 enabled when early_param is processed.
88 config SERIAL_EARLYCON_RISCV_SBI
89 bool "Early console using RISC-V SBI"
90 depends on RISCV_SBI_V01
92 select SERIAL_CORE_CONSOLE
93 select SERIAL_EARLYCON
95 Support for early debug console using RISC-V SBI. This enables
96 the console before standard serial driver is probed. This is enabled
97 with "earlycon=sbi" on the kernel command line. The console is
98 enabled when early_param is processed.
100 config SERIAL_SB1250_DUART
101 tristate "BCM1xxx on-chip DUART serial support"
102 depends on SIBYTE_SB1xxx_SOC=y
106 Support for the asynchronous serial interface (DUART) included in
107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
108 the letter D in DUART stands for "dual", which is how the device
109 is implemented. Depending on the SOC configuration there may be
110 one or more DUARTs available of which all are handled.
112 If unsure, say Y. To compile this driver as a module, choose M here:
113 the module will be called sb1250-duart.
115 config SERIAL_SB1250_DUART_CONSOLE
116 bool "Support for console on a BCM1xxx DUART serial port"
117 depends on SERIAL_SB1250_DUART=y
118 select SERIAL_CORE_CONSOLE
121 If you say Y here, it will be possible to use a serial port as the
122 system console (the system console is the device which receives all
123 kernel messages and warnings and which allows logins in single user
129 bool "AT91 on-chip serial port support"
130 depends on ARCH_AT91 || COMPILE_TEST
132 select SERIAL_MCTRL_GPIO if GPIOLIB
133 select MFD_AT91_USART
135 This enables the driver for the on-chip UARTs of the Atmel
138 config SERIAL_ATMEL_CONSOLE
139 bool "Support for console on AT91 serial port"
140 depends on SERIAL_ATMEL=y
141 select SERIAL_CORE_CONSOLE
143 Say Y here if you wish to use an on-chip UART on a Atmel
144 AT91 processor as the system console (the system
145 console is the device which receives all kernel messages and
146 warnings and which allows logins in single user mode).
148 config SERIAL_ATMEL_PDC
149 bool "Support DMA transfers on AT91 serial port"
150 depends on SERIAL_ATMEL
153 Say Y here if you wish to use the PDC to do DMA transfers to
154 and from the Atmel AT91 serial port. In order to
155 actually use DMA transfers, make sure that the use_dma_tx
156 and use_dma_rx members in the atmel_uart_data struct is set
157 appropriately for each port.
159 Note that break and error handling currently doesn't work
160 properly when DMA is enabled. Make sure that ports where
161 this matters don't use DMA.
163 config SERIAL_ATMEL_TTYAT
164 bool "Install as device ttyATn instead of ttySn"
165 depends on SERIAL_ATMEL=y
167 Say Y here if you wish to have the internal AT91 UARTs
168 appear as /dev/ttyATn (major 204, minor starting at 154)
169 instead of the normal /dev/ttySn (major 4, minor starting at
170 64). This is necessary if you also want other UARTs, such as
171 external 8250/16C550 compatible UARTs.
172 The ttySn nodes are legally reserved for the 8250 serial driver
173 but are often misused by other serial drivers.
175 To use this, you should create suitable ttyATn device nodes in
176 /dev/, and pass "console=ttyATn" to the kernel.
178 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
180 config SERIAL_KGDB_NMI
181 bool "Serial console over KGDB NMI debugger port"
182 depends on KGDB_SERIAL_CONSOLE
184 This special driver allows you to temporary use NMI debugger port
185 as a normal console (assuming that the port is attached to KGDB).
187 Unlike KDB's disable_nmi command, with this driver you are always
188 able to go back to the debugger using KGDB escape sequence ($3#33).
189 This is because this console driver processes the input in NMI
190 context, and thus is able to intercept the magic sequence.
192 Note that since the console interprets input and uses polling
193 communication methods, for things like PPP you still must fully
194 detach debugger port from the KGDB NMI (i.e. disable_nmi), and
200 tristate "Meson serial port support"
201 depends on ARCH_MESON
204 This enables the driver for the on-chip UARTs of the Amlogic
207 config SERIAL_MESON_CONSOLE
208 bool "Support for console on meson"
209 depends on SERIAL_MESON=y
210 select SERIAL_CORE_CONSOLE
211 select SERIAL_EARLYCON
213 Say Y here if you wish to use a Amlogic MesonX UART as the
214 system console (the system console is the device which
215 receives all kernel messages and warnings and which allows
216 logins in single user mode) as /dev/ttyAMLx.
218 config SERIAL_CLPS711X
219 tristate "CLPS711X serial port support"
220 depends on ARCH_CLPS711X || COMPILE_TEST
222 select SERIAL_MCTRL_GPIO if GPIOLIB
224 This enables the driver for the on-chip UARTs of the Cirrus
225 Logic EP711x/EP721x/EP731x processors.
227 config SERIAL_CLPS711X_CONSOLE
228 bool "Support for console on CLPS711X serial port"
229 depends on SERIAL_CLPS711X=y
230 select SERIAL_CORE_CONSOLE
232 Even if you say Y here, the currently visible virtual console
233 (/dev/tty0) will still be used as the system console by default, but
234 you can alter that using a kernel command line option such as
237 config SERIAL_SAMSUNG
238 tristate "Samsung SoC serial support"
239 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
242 Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
243 providing /dev/ttySAC0, 1 and 2 (note, some machines may not
244 provide all of these ports, depending on how the serial port
247 config SERIAL_SAMSUNG_UARTS_4
249 depends on SERIAL_SAMSUNG
250 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
252 Internal node for the common case of 4 Samsung compatible UARTs
254 config SERIAL_SAMSUNG_UARTS
256 depends on SERIAL_SAMSUNG
257 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
260 Select the number of available UART ports for the Samsung S3C
263 config SERIAL_SAMSUNG_CONSOLE
264 bool "Support for console on Samsung SoC serial port"
265 depends on SERIAL_SAMSUNG=y
266 select SERIAL_CORE_CONSOLE
267 select SERIAL_EARLYCON
269 Allow selection of the S3C24XX on-board serial ports for use as
272 Even if you say Y here, the currently visible virtual console
273 (/dev/tty0) will still be used as the system console by default, but
274 you can alter that using a kernel command line option such as
275 "console=ttySACx". (Try "man bootparam" or see the documentation of
276 your boot loader about how to pass options to the kernel at
279 config SERIAL_SIRFSOC
280 tristate "SiRF SoC Platform Serial port support"
284 Support for the on-chip UART on the CSR SiRFprimaII series,
285 providing /dev/ttySiRF0, 1 and 2 (note, some machines may not
286 provide all of these ports, depending on how the serial port
287 pins are configured).
289 config SERIAL_SIRFSOC_CONSOLE
290 bool "Support for console on SiRF SoC serial port"
291 depends on SERIAL_SIRFSOC=y
292 select SERIAL_CORE_CONSOLE
294 Even if you say Y here, the currently visible virtual console
295 (/dev/tty0) will still be used as the system console by default, but
296 you can alter that using a kernel command line option such as
297 "console=ttySiRFx". (Try "man bootparam" or see the documentation of
298 your boot loader about how to pass options to the kernel at
302 tristate "NVIDIA Tegra20/30 SoC serial controller"
303 depends on ARCH_TEGRA && TEGRA20_APB_DMA
306 Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
307 providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
308 provide all of these ports, depending on how the serial port
309 are enabled). This driver uses the APB DMA to achieve higher baudrate
310 and better performance.
312 config SERIAL_TEGRA_TCU
313 tristate "NVIDIA Tegra Combined UART"
314 depends on ARCH_TEGRA && TEGRA_HSP_MBOX
317 Support for the mailbox-based TCU (Tegra Combined UART) serial port.
318 TCU is a virtual serial port that allows multiplexing multiple data
319 streams into a single hardware serial port.
321 config SERIAL_TEGRA_TCU_CONSOLE
322 bool "Support for console on a Tegra TCU serial port"
323 depends on SERIAL_TEGRA_TCU=y
324 select SERIAL_CORE_CONSOLE
327 If you say Y here, it will be possible to use a the Tegra TCU as the
328 system console (the system console is the device which receives all
329 kernel messages and warnings and which allows logins in single user
334 config SERIAL_MAX3100
335 tristate "MAX3100 support"
341 config SERIAL_MAX310X
342 tristate "MAX310X support"
343 depends on SPI_MASTER
345 select REGMAP_SPI if SPI_MASTER
346 select REGMAP_I2C if I2C
348 This selects support for an advanced UART from Maxim (Dallas).
349 Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
350 Each IC contains 128 words each of receive and transmit FIFO
351 that can be controlled through I2C or high-speed SPI.
353 Say Y here if you want to support this ICs.
356 bool "DECstation DZ serial driver"
357 depends on MACH_DECSTATION && 32BIT
361 DZ11-family serial controllers for DECstations and VAXstations,
362 including the DC7085, M7814, and M7819.
364 config SERIAL_DZ_CONSOLE
365 bool "Support console on DECstation DZ serial driver"
366 depends on SERIAL_DZ=y
367 select SERIAL_CORE_CONSOLE
370 If you say Y here, it will be possible to use a serial port as the
371 system console (the system console is the device which receives all
372 kernel messages and warnings and which allows logins in single user
375 Note that the firmware uses ttyS3 as the serial console on
376 DECstations that use this driver.
381 tristate "DECstation Z85C30 serial support"
382 depends on MACH_DECSTATION
386 Support for the Zilog 85C350 serial communications controller used
387 for serial ports in newer DECstation systems. These include the
388 DECsystem 5900 and all models of the DECstation and DECsystem 5000
389 systems except from model 200.
391 If unsure, say Y. To compile this driver as a module, choose M here:
392 the module will be called zs.
394 config SERIAL_ZS_CONSOLE
395 bool "Support for console on a DECstation Z85C30 serial port"
396 depends on SERIAL_ZS=y
397 select SERIAL_CORE_CONSOLE
400 If you say Y here, it will be possible to use a serial port as the
401 system console (the system console is the device which receives all
402 kernel messages and warnings and which allows logins in single user
405 Note that the firmware uses ttyS1 as the serial console on the
406 Maxine and ttyS3 on the others using this driver.
411 tristate "DC21285 serial port support"
412 depends on FOOTBRIDGE
415 If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
416 PCI bridge you can enable its onboard serial port by enabling this
419 config SERIAL_21285_CONSOLE
420 bool "Console on DC21285 serial port"
421 depends on SERIAL_21285=y
422 select SERIAL_CORE_CONSOLE
424 If you have enabled the serial port on the 21285 footbridge you can
425 make it the console by answering Y to this option.
427 Even if you say Y here, the currently visible virtual console
428 (/dev/tty0) will still be used as the system console by default, but
429 you can alter that using a kernel command line option such as
430 "console=ttyFB". (Try "man bootparam" or see the documentation of
431 your boot loader (lilo or loadlin) about how to pass options to the
432 kernel at boot time.)
435 bool "PXA serial port support (DEPRECATED)"
436 depends on ARCH_PXA || ARCH_MMP
438 select SERIAL_8250_PXA if SERIAL_8250=y
439 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
441 If you have a machine based on an Intel XScale PXA2xx CPU you
442 can enable its onboard serial ports by enabling this option.
444 Unless you have a specific need, you should use SERIAL_8250_PXA
447 config SERIAL_PXA_NON8250
449 depends on !SERIAL_8250
451 config SERIAL_PXA_CONSOLE
452 bool "Console on PXA serial port (DEPRECATED)"
453 depends on SERIAL_PXA
454 select SERIAL_CORE_CONSOLE
455 select SERIAL_8250_CONSOLE if SERIAL_8250=y
457 If you have enabled the serial port on the Intel XScale PXA
458 CPU you can make it the console by answering Y to this option.
460 Even if you say Y here, the currently visible virtual console
461 (/dev/tty0) will still be used as the system console by default, but
462 you can alter that using a kernel command line option such as
463 "console=ttySA0". (Try "man bootparam" or see the documentation of
464 your boot loader (lilo or loadlin) about how to pass options to the
465 kernel at boot time.)
467 Unless you have a specific need, you should use SERIAL_8250_PXA
468 and SERIAL_8250_CONSOLE instead of this.
471 bool "SA1100 serial port support"
472 depends on ARCH_SA1100
474 select SERIAL_MCTRL_GPIO if GPIOLIB
476 If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
477 can enable its onboard serial port by enabling this option.
478 Please read <file:Documentation/arm/sa1100/serial_uart.rst> for further
481 config SERIAL_SA1100_CONSOLE
482 bool "Console on SA1100 serial port"
483 depends on SERIAL_SA1100
484 select SERIAL_CORE_CONSOLE
486 If you have enabled the serial port on the SA1100/SA1110 StrongARM
487 CPU you can make it the console by answering Y to this option.
489 Even if you say Y here, the currently visible virtual console
490 (/dev/tty0) will still be used as the system console by default, but
491 you can alter that using a kernel command line option such as
492 "console=ttySA0". (Try "man bootparam" or see the documentation of
493 your boot loader (lilo or loadlin) about how to pass options to the
494 kernel at boot time.)
497 tristate "IMX serial port support"
498 depends on ARCH_MXC || COMPILE_TEST
501 select SERIAL_MCTRL_GPIO if GPIOLIB
503 If you have a machine based on a Motorola IMX CPU you
504 can enable its onboard serial port by enabling this option.
506 config SERIAL_IMX_CONSOLE
507 tristate "Console on IMX serial port"
508 depends on SERIAL_IMX
509 select SERIAL_CORE_CONSOLE
511 If you have enabled the serial port on the Freescale IMX
512 CPU you can make it the console by answering Y/M to this option.
514 Even if you say Y/M here, the currently visible virtual console
515 (/dev/tty0) will still be used as the system console by default, but
516 you can alter that using a kernel command line option such as
517 "console=ttymxc0". (Try "man bootparam" or see the documentation of
518 your bootloader about how to pass options to the kernel at boot time.)
520 config SERIAL_IMX_EARLYCON
521 bool "Earlycon on IMX serial port"
522 depends on ARCH_MXC || COMPILE_TEST
524 select SERIAL_EARLYCON
525 select SERIAL_CORE_CONSOLE
526 default y if SERIAL_IMX_CONSOLE
528 If you have enabled the earlycon on the Freescale IMX
529 CPU you can make it the earlycon by answering Y to this option.
531 config SERIAL_UARTLITE
532 tristate "Xilinx uartlite serial port support"
536 Say Y here if you want to use the Xilinx uartlite serial controller.
538 To compile this driver as a module, choose M here: the
539 module will be called uartlite.
541 config SERIAL_UARTLITE_CONSOLE
542 bool "Support for console on Xilinx uartlite serial port"
543 depends on SERIAL_UARTLITE=y
544 select SERIAL_CORE_CONSOLE
545 select SERIAL_EARLYCON
547 Say Y here if you wish to use a Xilinx uartlite as the system
548 console (the system console is the device which receives all kernel
549 messages and warnings and which allows logins in single user mode).
551 config SERIAL_UARTLITE_NR_UARTS
552 int "Maximum number of uartlite serial ports"
553 depends on SERIAL_UARTLITE
557 Set this to the number of uartlites in your system, or the number
558 you think you might implement.
560 config SERIAL_SUNCORE
564 select SERIAL_CORE_CONSOLE
567 config SERIAL_SUNZILOG
568 tristate "Sun Zilog8530 serial support"
571 This driver supports the Zilog8530 serial ports found on many Sparc
572 systems. Say Y or M if you want to be able to these serial ports.
574 config SERIAL_SUNZILOG_CONSOLE
575 bool "Console on Sun Zilog8530 serial port"
576 depends on SERIAL_SUNZILOG=y
578 If you would like to be able to use the Zilog8530 serial port
579 on your Sparc system as the console, you can do so by answering
583 tristate "Sun SU serial support"
584 depends on SPARC && PCI
586 This driver supports the 8250 serial ports that run the keyboard and
587 mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
588 to these serial ports.
590 config SERIAL_SUNSU_CONSOLE
591 bool "Console on Sun SU serial port"
592 depends on SERIAL_SUNSU=y
594 If you would like to be able to use the SU serial port
595 on your Sparc system as the console, you can do so by answering
599 tristate "Serial MUX support"
604 Saying Y here will enable the hardware MUX serial driver for
605 the Nova, K class systems and D class with a 'remote control card'.
606 The hardware MUX is not 8250/16550 compatible therefore the
607 /dev/ttyB0 device is shared between the Serial MUX and the PDC
608 software console. The following steps need to be completed to use
611 1. create the device entry (mknod /dev/ttyB0 c 11 0)
612 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
613 3. Add device ttyB0 to /etc/securetty (if you want to log on as
614 root on this console.)
615 4. Change the kernel command console parameter to: console=ttyB0
617 config SERIAL_MUX_CONSOLE
618 bool "Support for console on serial MUX"
619 depends on SERIAL_MUX=y
620 select SERIAL_CORE_CONSOLE
624 bool "PDC software console support"
625 depends on PARISC && !SERIAL_MUX && VT
627 Saying Y here will enable the software based PDC console to be
628 used as the system console. This is useful for machines in
629 which the hardware based console has not been written yet. The
630 following steps must be completed to use the PDC console:
632 1. create the device entry (mknod /dev/ttyB0 c 11 0)
633 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
634 3. Add device ttyB0 to /etc/securetty (if you want to log on as
635 root on this console.)
636 4. Change the kernel command console parameter to: console=ttyB0
639 tristate "Sun Siemens SAB82532 serial support"
640 depends on SPARC && PCI
642 This driver supports the Siemens SAB82532 DUSCC serial ports on newer
643 (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
646 config SERIAL_SUNSAB_CONSOLE
647 bool "Console on Sun Siemens SAB82532 serial port"
648 depends on SERIAL_SUNSAB=y
650 If you would like to be able to use the SAB82532 serial port
651 on your Sparc system as the console, you can do so by answering
655 bool "Sun4v Hypervisor Console support"
658 This driver supports the console device found on SUN4V Sparc
659 systems. Say Y if you want to be able to use this device.
661 config SERIAL_IP22_ZILOG
662 tristate "SGI Zilog8530 serial support"
663 depends on SGI_HAS_ZILOG
666 This driver supports the Zilog8530 serial ports found on SGI
667 systems. Say Y or M if you want to be able to these serial ports.
669 config SERIAL_IP22_ZILOG_CONSOLE
670 bool "Console on SGI Zilog8530 serial port"
671 depends on SERIAL_IP22_ZILOG=y
672 select SERIAL_CORE_CONSOLE
675 tristate "SuperH SCI(F) serial port support"
676 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
678 select SERIAL_MCTRL_GPIO if GPIOLIB
680 config SERIAL_SH_SCI_NR_UARTS
681 int "Maximum number of SCI(F) serial ports" if EXPERT
684 depends on SERIAL_SH_SCI
686 default "10" if SUPERH
687 default "18" if ARCH_RENESAS
690 config SERIAL_SH_SCI_CONSOLE
691 bool "Support for console on SuperH SCI(F)" if EXPERT
692 depends on SERIAL_SH_SCI=y
693 select SERIAL_CORE_CONSOLE
696 config SERIAL_SH_SCI_EARLYCON
697 bool "Support for early console on SuperH SCI(F)" if EXPERT
698 depends on SERIAL_SH_SCI=y
699 select SERIAL_CORE_CONSOLE
700 select SERIAL_EARLYCON
701 default ARCH_RENESAS || H8300
703 config SERIAL_SH_SCI_DMA
704 bool "DMA support" if EXPERT
705 depends on SERIAL_SH_SCI && DMA_ENGINE
708 config SERIAL_PNX8XXX
709 bool "Enable PNX8XXX SoCs' UART Support"
710 depends on SOC_PNX833X
713 If you have a MIPS-based Philips SoC such as PNX8330 and you want
714 to use serial ports, say Y. Otherwise, say N.
716 config SERIAL_PNX8XXX_CONSOLE
717 bool "Enable PNX8XX0 serial console"
718 depends on SERIAL_PNX8XXX
719 select SERIAL_CORE_CONSOLE
721 If you have a MIPS-based Philips SoC such as PNX8330 and you want
722 to use serial console, say Y. Otherwise, say N.
724 config SERIAL_HS_LPC32XX
725 tristate "LPC32XX high speed serial port support"
726 depends on ARCH_LPC32XX || COMPILE_TEST
730 Support for the LPC32XX high speed serial ports (up to 900kbps).
731 Those are UARTs completely different from the Standard UARTs on the
733 Choose M or Y here to build this driver.
735 config SERIAL_HS_LPC32XX_CONSOLE
736 bool "Enable LPC32XX high speed UART serial console"
737 depends on SERIAL_HS_LPC32XX=y
738 select SERIAL_CORE_CONSOLE
740 If you would like to be able to use one of the high speed serial
741 ports on the LPC32XX as the console, you can do so by answering
747 config SERIAL_CORE_CONSOLE
754 bool "Coldfire serial support"
758 This serial driver supports the Freescale Coldfire serial ports.
760 config SERIAL_MCF_BAUDRATE
761 int "Default baudrate for Coldfire serial ports"
762 depends on SERIAL_MCF
765 This setting lets you define what the default baudrate is for the
766 ColdFire serial ports. The usual default varies from board to board,
767 and this setting is a way of catering for that.
769 config SERIAL_MCF_CONSOLE
770 bool "Coldfire serial console support"
771 depends on SERIAL_MCF
772 select SERIAL_CORE_CONSOLE
774 Enable a ColdFire internal serial port to be the system console.
776 config SERIAL_PMACZILOG
777 tristate "Mac or PowerMac z85c30 ESCC support"
778 depends on (M68K && MAC) || PPC_PMAC
781 This driver supports the Zilog z85C30 serial ports found on
783 Say Y or M if you want to be able to these serial ports.
785 config SERIAL_PMACZILOG_TTYS
786 bool "Use ttySn device nodes for Zilog z85c30"
787 depends on SERIAL_PMACZILOG
789 The pmac_zilog driver for the z85C30 chip on many powermacs
790 historically used the device numbers for /dev/ttySn. The
791 8250 serial port driver also uses these numbers, which means
792 the two drivers being unable to coexist; you could not use
793 both z85C30 and 8250 type ports at the same time.
795 If this option is not selected, the pmac_zilog driver will
796 use the device numbers allocated for /dev/ttyPZn. This allows
797 the pmac_zilog and 8250 drivers to co-exist, but may cause
798 existing userspace setups to break. Programs that need to
799 access the built-in serial ports on powermacs will need to
800 be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
802 If you enable this option, any z85c30 ports in the system will
803 be registered as ttyS0 onwards as in the past, and you will be
804 unable to use the 8250 module for PCMCIA or other 16C550-style
807 Say N unless you need the z85c30 ports on your (Power)Mac
808 to appear as /dev/ttySn.
810 config SERIAL_PMACZILOG_CONSOLE
811 bool "Console on Mac or PowerMac z85c30 serial port"
812 depends on SERIAL_PMACZILOG=y
813 select SERIAL_CORE_CONSOLE
815 If you would like to be able to use the z85c30 serial port
816 on your (Power)Mac as the console, you can do so by answering
820 tristate "CPM SCC/SMC serial port support"
821 depends on CPM2 || CPM1
824 This driver supports the SCC and SMC serial ports on Motorola
825 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
827 config SERIAL_CPM_CONSOLE
828 bool "Support for console on CPM SCC/SMC serial port"
829 depends on SERIAL_CPM=y
830 select SERIAL_CORE_CONSOLE
832 Say Y here if you wish to use a SCC or SMC CPM UART as the system
833 console (the system console is the device which receives all kernel
834 messages and warnings and which allows logins in single user mode).
836 Even if you say Y here, the currently visible framebuffer console
837 (/dev/tty0) will still be used as the system console by default, but
838 you can alter that using a kernel command line option such as
839 "console=ttyCPM0". (Try "man bootparam" or see the documentation of
840 your boot loader (lilo or loadlin) about how to pass options to the
841 kernel at boot time.)
844 tristate "Microchip PIC32 serial support"
845 depends on MACH_PIC32
848 If you have a PIC32, this driver supports the serial ports.
850 Say Y or M to use PIC32 serial ports, otherwise say N. Note that
851 to use a serial port as a console, this must be included in kernel and
854 config SERIAL_PIC32_CONSOLE
855 bool "PIC32 serial console support"
856 depends on SERIAL_PIC32
857 select SERIAL_CORE_CONSOLE
859 If you have a PIC32, this driver supports the putting a console on one
862 Say Y to use the PIC32 console, otherwise say N.
864 config SERIAL_MPC52xx
865 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
866 depends on PPC_MPC52xx || PPC_MPC512x
869 This driver supports MPC52xx and MPC512x PSC serial ports. If you would
870 like to use them, you must answer Y or M to this option. Note that
871 for use as console, it must be included in kernel and not as a
874 config SERIAL_MPC52xx_CONSOLE
875 bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
876 depends on SERIAL_MPC52xx=y
877 select SERIAL_CORE_CONSOLE
879 Select this options if you'd like to use one of the PSC serial port
880 of the Freescale MPC52xx family as a console.
882 config SERIAL_MPC52xx_CONSOLE_BAUD
883 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
884 depends on SERIAL_MPC52xx_CONSOLE=y
887 Select the MPC52xx console baud rate.
888 This value is only used if the bootloader doesn't pass in the
892 tristate "IBM Multiport Serial Adapter"
893 depends on PCI && PPC_PSERIES
897 This driver is for a family of multiport serial adapters
898 including 2 port RVX, 2 port internal modem, 4 port internal
899 modem and a split 1 port RVX and 1 port internal modem.
901 This driver can also be built as a module. If so, the module
905 bool "TMPTX39XX/49XX SIO support"
906 depends on HAS_TXX9_SERIAL
910 config HAS_TXX9_SERIAL
913 config SERIAL_TXX9_NR_UARTS
914 int "Maximum number of TMPTX39XX/49XX SIO ports"
915 depends on SERIAL_TXX9
918 config SERIAL_TXX9_CONSOLE
919 bool "TMPTX39XX/49XX SIO Console support"
920 depends on SERIAL_TXX9=y
921 select SERIAL_CORE_CONSOLE
923 config SERIAL_TXX9_STDSERIAL
924 bool "TX39XX/49XX SIO act as standard serial"
925 depends on !SERIAL_8250 && SERIAL_TXX9
928 tristate "NEC VR4100 series Serial Interface Unit support"
929 depends on CPU_VR41XX
932 If you have a NEC VR4100 series processor and you want to use
933 Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU)
934 (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.
936 config SERIAL_VR41XX_CONSOLE
937 bool "Enable NEC VR4100 series Serial Interface Unit console"
938 depends on SERIAL_VR41XX=y
939 select SERIAL_CORE_CONSOLE
941 If you have a NEC VR4100 series processor and you want to use
942 a console on a serial port, say Y. Otherwise, say N.
945 tristate "Digi International NEO and Classic PCI Support"
949 This is a driver for Digi International's Neo and Classic series
950 of cards which provide multiple serial ports. You would need
951 something like this to connect more than two modems to your Linux
952 box, for instance in order to become a dial-in server. This driver
953 supports PCI boards only.
955 If you have a card like this, say Y here, otherwise say N.
957 To compile this driver as a module, choose M here: the
958 module will be called jsm.
961 tristate "MSM on-chip serial port support"
965 config SERIAL_MSM_CONSOLE
966 bool "MSM serial console support"
967 depends on SERIAL_MSM=y
968 select SERIAL_CORE_CONSOLE
969 select SERIAL_EARLYCON
971 config SERIAL_QCOM_GENI
972 tristate "QCOM on-chip GENI based serial port support"
973 depends on ARCH_QCOM || COMPILE_TEST
974 depends on QCOM_GENI_SE
977 config SERIAL_QCOM_GENI_CONSOLE
978 bool "QCOM GENI Serial Console support"
979 depends on SERIAL_QCOM_GENI
980 select SERIAL_CORE_CONSOLE
981 select SERIAL_EARLYCON
983 Serial console driver for Qualcomm Technologies Inc's GENI based
987 bool "VIA VT8500 on-chip serial port support"
988 depends on ARCH_VT8500
991 config SERIAL_VT8500_CONSOLE
992 bool "VIA VT8500 serial console support"
993 depends on SERIAL_VT8500=y
994 select SERIAL_CORE_CONSOLE
997 tristate "OMAP serial port support"
998 depends on ARCH_OMAP2PLUS
1001 If you have a machine based on an Texas Instruments OMAP CPU you
1002 can enable its onboard serial ports by enabling this option.
1004 By enabling this option you take advantage of dma feature available
1005 with the omap-serial driver. DMA support can be enabled from platform
1008 config SERIAL_OMAP_CONSOLE
1009 bool "Console on OMAP serial port"
1010 depends on SERIAL_OMAP=y
1011 select SERIAL_CORE_CONSOLE
1013 Select this option if you would like to use omap serial port as
1016 Even if you say Y here, the currently visible virtual console
1017 (/dev/tty0) will still be used as the system console by default, but
1018 you can alter that using a kernel command line option such as
1019 "console=ttyOx". (Try "man bootparam" or see the documentation of
1020 your boot loader about how to pass options to the kernel at
1023 config SERIAL_SIFIVE
1024 tristate "SiFive UART support"
1028 Select this option if you are building a kernel for a device that
1029 contains a SiFive UART IP block. This type of UART is present on
1030 SiFive FU540 SoCs, among others.
1032 config SERIAL_SIFIVE_CONSOLE
1033 bool "Console on SiFive UART"
1034 depends on SERIAL_SIFIVE=y
1035 select SERIAL_CORE_CONSOLE
1036 select SERIAL_EARLYCON
1038 Select this option if you would like to use a SiFive UART as the
1041 Even if you say Y here, the currently visible virtual console
1042 (/dev/tty0) will still be used as the system console by default, but
1043 you can alter that using a kernel command line option such as
1044 "console=ttySIFx". (Try "man bootparam" or see the documentation of
1045 your boot loader about how to pass options to the kernel at
1048 config SERIAL_LANTIQ
1049 tristate "Lantiq serial driver"
1050 depends on (LANTIQ || X86) || COMPILE_TEST
1053 Support for UART on Lantiq and Intel SoCs.
1054 To compile this driver as a module, select M here. The
1055 module will be called lantiq.
1057 config SERIAL_LANTIQ_CONSOLE
1058 bool "Console on Lantiq UART"
1059 depends on SERIAL_LANTIQ=y
1060 select SERIAL_CORE_CONSOLE
1061 select SERIAL_EARLYCON
1063 Select this option if you would like to use a Lantiq UART as the
1067 tristate "Freescale QUICC Engine serial port support"
1068 depends on QUICC_ENGINE
1072 This driver supports the QE serial ports on Freescale embedded
1073 PowerPC that contain a QUICC Engine.
1075 config SERIAL_SCCNXP
1076 tristate "SCCNXP serial port support"
1079 This selects support for an advanced UART from NXP (Philips).
1080 Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1081 SC28L202, SCC68681 and SCC68692.
1083 config SERIAL_SCCNXP_CONSOLE
1084 bool "Console on SCCNXP serial port"
1085 depends on SERIAL_SCCNXP=y
1086 select SERIAL_CORE_CONSOLE
1088 Support for console on SCCNXP serial ports.
1090 config SERIAL_SC16IS7XX_CORE
1093 config SERIAL_SC16IS7XX
1094 tristate "SC16IS7xx serial support"
1096 depends on (SPI_MASTER && !I2C) || I2C
1098 This selects support for SC16IS7xx serial ports.
1099 Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1100 SC16IS760 and SC16IS762. Select supported buses using options below.
1102 config SERIAL_SC16IS7XX_I2C
1103 bool "SC16IS7xx for I2C interface"
1104 depends on SERIAL_SC16IS7XX
1106 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1107 select REGMAP_I2C if I2C
1110 Enable SC16IS7xx driver on I2C bus,
1111 If required say y, and say n to i2c if not required,
1112 Enabled by default to support oldconfig.
1113 You must select at least one bus for the driver to be built.
1115 config SERIAL_SC16IS7XX_SPI
1116 bool "SC16IS7xx for spi interface"
1117 depends on SERIAL_SC16IS7XX
1118 depends on SPI_MASTER
1119 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1120 select REGMAP_SPI if SPI_MASTER
1122 Enable SC16IS7xx driver on SPI bus,
1123 If required say y, and say n to spi if not required,
1124 This is additional support to existing driver.
1125 You must select at least one bus for the driver to be built.
1127 config SERIAL_TIMBERDALE
1128 tristate "Support for timberdale UART"
1130 depends on X86_32 || COMPILE_TEST
1132 Add support for UART controller on timberdale.
1134 config SERIAL_BCM63XX
1135 tristate "Broadcom BCM63xx/BCM33xx UART support"
1137 depends on MIPS || ARM || COMPILE_TEST
1139 This enables the driver for the onchip UART core found on
1140 the following chipsets:
1142 BCM33xx (cable modem)
1143 BCM63xx/BCM63xxx (DSL)
1145 BCM7xxx (STB) - DOCSIS console
1147 config SERIAL_BCM63XX_CONSOLE
1148 bool "Console on BCM63xx serial port"
1149 depends on SERIAL_BCM63XX=y
1150 select SERIAL_CORE_CONSOLE
1151 select SERIAL_EARLYCON
1153 If you have enabled the serial port on the BCM63xx CPU
1154 you can make it the console by answering Y to this option.
1156 config SERIAL_GRLIB_GAISLER_APBUART
1157 tristate "GRLIB APBUART serial support"
1158 depends on OF && SPARC
1161 Add support for the GRLIB APBUART serial port.
1163 config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1164 bool "Console on GRLIB APBUART serial port"
1165 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1166 select SERIAL_CORE_CONSOLE
1168 Support for running a console on the GRLIB APBUART
1170 config SERIAL_ALTERA_JTAGUART
1171 tristate "Altera JTAG UART support"
1174 This driver supports the Altera JTAG UART port.
1176 config SERIAL_ALTERA_JTAGUART_CONSOLE
1177 bool "Altera JTAG UART console support"
1178 depends on SERIAL_ALTERA_JTAGUART=y
1179 select SERIAL_CORE_CONSOLE
1180 select SERIAL_EARLYCON
1182 Enable a Altera JTAG UART port to be the system console.
1184 config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1185 bool "Bypass output when no connection"
1186 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1187 select SERIAL_CORE_CONSOLE
1189 Bypass console output and keep going even if there is no
1190 JTAG terminal connection with the host.
1192 config SERIAL_ALTERA_UART
1193 tristate "Altera UART support"
1196 This driver supports the Altera softcore UART port.
1198 config SERIAL_ALTERA_UART_MAXPORTS
1199 int "Maximum number of Altera UART ports"
1200 depends on SERIAL_ALTERA_UART
1203 This setting lets you define the maximum number of the Altera
1204 UART ports. The usual default varies from board to board, and
1205 this setting is a way of catering for that.
1207 config SERIAL_ALTERA_UART_BAUDRATE
1208 int "Default baudrate for Altera UART ports"
1209 depends on SERIAL_ALTERA_UART
1212 This setting lets you define what the default baudrate is for the
1213 Altera UART ports. The usual default varies from board to board,
1214 and this setting is a way of catering for that.
1216 config SERIAL_ALTERA_UART_CONSOLE
1217 bool "Altera UART console support"
1218 depends on SERIAL_ALTERA_UART=y
1219 select SERIAL_CORE_CONSOLE
1220 select SERIAL_EARLYCON
1222 Enable a Altera UART port to be the system console.
1224 config SERIAL_IFX6X60
1225 tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)"
1226 depends on GPIOLIB || COMPILE_TEST
1227 depends on SPI && HAS_DMA
1229 Support for the IFX6x60 modem devices on Intel MID platforms.
1231 config SERIAL_PCH_UART
1232 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1233 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1236 This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1237 which is an IOH(Input/Output Hub) for x86 embedded processor.
1238 Enabling PCH_DMA, this PCH UART works as DMA mode.
1240 This driver also can be used for LAPIS Semiconductor IOH(Input/
1241 Output Hub), ML7213, ML7223 and ML7831.
1242 ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1243 for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1244 ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1245 ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1247 config SERIAL_PCH_UART_CONSOLE
1248 bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1249 depends on SERIAL_PCH_UART=y
1250 select SERIAL_CORE_CONSOLE
1252 Say Y here if you wish to use the PCH UART as the system console
1253 (the system console is the device which receives all kernel messages and
1254 warnings and which allows logins in single user mode).
1256 config SERIAL_MXS_AUART
1257 tristate "MXS AUART support"
1258 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1260 select SERIAL_MCTRL_GPIO if GPIOLIB
1262 This driver supports the MXS and Alphascale ASM9260 Application
1265 config SERIAL_MXS_AUART_CONSOLE
1266 bool "MXS AUART console support"
1267 depends on SERIAL_MXS_AUART=y
1268 select SERIAL_CORE_CONSOLE
1270 Enable a MXS AUART port to be the system console.
1272 config SERIAL_XILINX_PS_UART
1273 tristate "Cadence (Xilinx Zynq) UART support"
1277 This driver supports the Cadence UART. It is found e.g. in Xilinx
1280 config SERIAL_XILINX_PS_UART_CONSOLE
1281 bool "Cadence UART console support"
1282 depends on SERIAL_XILINX_PS_UART=y
1283 select SERIAL_CORE_CONSOLE
1284 select SERIAL_EARLYCON
1286 Enable a Cadence UART port to be the system console.
1288 config SERIAL_AR933X
1289 tristate "AR933X serial port support"
1290 depends on HAVE_CLK && ATH79
1292 select SERIAL_MCTRL_GPIO if GPIOLIB
1294 If you have an Atheros AR933X SOC based board and want to use the
1295 built-in UART of the SoC, say Y to this option.
1297 To compile this driver as a module, choose M here: the
1298 module will be called ar933x_uart.
1300 config SERIAL_AR933X_CONSOLE
1301 bool "Console on AR933X serial port"
1302 depends on SERIAL_AR933X=y
1303 select SERIAL_CORE_CONSOLE
1305 Enable a built-in UART port of the AR933X to be the system console.
1307 config SERIAL_AR933X_NR_UARTS
1308 int "Maximum number of AR933X serial ports"
1309 depends on SERIAL_AR933X
1312 Set this to the number of serial ports you want the driver
1315 config SERIAL_EFM32_UART
1316 tristate "EFM32 UART/USART port"
1317 depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
1320 This driver support the USART and UART ports on
1321 Energy Micro's efm32 SoCs.
1323 config SERIAL_MPS2_UART_CONSOLE
1324 bool "MPS2 UART console support"
1325 depends on SERIAL_MPS2_UART
1326 select SERIAL_CORE_CONSOLE
1327 select SERIAL_EARLYCON
1329 config SERIAL_MPS2_UART
1330 bool "MPS2 UART port"
1331 depends on ARCH_MPS2 || COMPILE_TEST
1334 This driver support the UART ports on ARM MPS2.
1336 config SERIAL_EFM32_UART_CONSOLE
1337 bool "EFM32 UART/USART console support"
1338 depends on SERIAL_EFM32_UART=y
1339 select SERIAL_CORE_CONSOLE
1342 tristate "ARC UART driver support"
1345 Driver for on-chip UART for ARC(Synopsys) for the legacy
1346 FPGA Boards (ML50x/ARCAngel4)
1348 config SERIAL_ARC_CONSOLE
1349 bool "Console on ARC UART"
1350 depends on SERIAL_ARC=y
1351 select SERIAL_CORE_CONSOLE
1352 select SERIAL_EARLYCON
1354 Enable system Console on ARC UART
1356 config SERIAL_ARC_NR_PORTS
1357 int "Number of ARC UART ports"
1358 depends on SERIAL_ARC
1362 Set this to the number of serial ports you want the driver
1366 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1370 This driver supports the Comtrol RocketPort EXPRESS and
1371 RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1372 These adapters use a "RocketPort 2" ASIC that is not compatible
1373 with the original RocketPort driver (CONFIG_ROCKETPORT).
1375 To compile this driver as a module, choose M here: the
1376 module will be called rp2.
1378 If you want to compile this driver into the kernel, say Y here. If
1379 you don't have a suitable RocketPort card installed, say N.
1381 config SERIAL_RP2_NR_UARTS
1382 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1383 depends on SERIAL_RP2
1386 If multiple cards are present, the default limit of 32 ports may
1387 need to be increased.
1389 config SERIAL_FSL_LPUART
1390 tristate "Freescale lpuart serial port support"
1394 Support for the on-chip lpuart on some Freescale SOCs.
1396 config SERIAL_FSL_LPUART_CONSOLE
1397 bool "Console on Freescale lpuart serial port"
1398 depends on SERIAL_FSL_LPUART=y
1399 select SERIAL_CORE_CONSOLE
1400 select SERIAL_EARLYCON
1402 If you have enabled the lpuart serial port on the Freescale SoCs,
1403 you can make it the console by answering Y to this option.
1405 config SERIAL_FSL_LINFLEXUART
1406 tristate "Freescale LINFlexD UART serial port support"
1410 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1412 config SERIAL_FSL_LINFLEXUART_CONSOLE
1413 bool "Console on Freescale LINFlexD UART serial port"
1414 depends on SERIAL_FSL_LINFLEXUART=y
1415 select SERIAL_CORE_CONSOLE
1416 select SERIAL_EARLYCON
1418 If you have enabled the LINFlexD UART serial port on the Freescale
1419 SoCs, you can make it the console by answering Y to this option.
1421 config SERIAL_CONEXANT_DIGICOLOR
1422 tristate "Conexant Digicolor CX92xxx USART serial port support"
1426 Support for the on-chip USART on Conexant Digicolor SoCs.
1428 config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1429 bool "Console on Conexant Digicolor serial port"
1430 depends on SERIAL_CONEXANT_DIGICOLOR=y
1431 select SERIAL_CORE_CONSOLE
1433 If you have enabled the USART serial port on Conexant Digicolor
1434 SoCs, you can make it the console by answering Y to this option.
1436 config SERIAL_ST_ASC
1437 tristate "ST ASC serial port support"
1439 depends on ARM || COMPILE_TEST
1441 This driver is for the on-chip Asychronous Serial Controller on
1442 STMicroelectronics STi SoCs.
1443 ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1444 It support all industry standard baud rates.
1448 config SERIAL_ST_ASC_CONSOLE
1449 bool "Support for console on ST ASC"
1450 depends on SERIAL_ST_ASC=y
1451 select SERIAL_CORE_CONSOLE
1453 config SERIAL_MEN_Z135
1454 tristate "MEN 16z135 Support"
1458 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1461 This driver can also be build as a module. If so, the module will be called
1465 tristate "Support for Spreadtrum serial"
1467 depends on COMMON_CLK
1469 This enables the driver for the Spreadtrum's serial.
1471 config SERIAL_SPRD_CONSOLE
1472 bool "Spreadtrum UART console support"
1473 depends on SERIAL_SPRD=y
1474 select SERIAL_CORE_CONSOLE
1475 select SERIAL_EARLYCON
1477 Support for early debug console using Spreadtrum's serial. This enables
1478 the console before standard serial driver is probed. This is enabled
1479 with "earlycon" on the kernel command line. The console is
1480 enabled when early_param is processed.
1483 tristate "STMicroelectronics STM32 serial port support"
1485 depends on ARCH_STM32 || COMPILE_TEST
1486 select SERIAL_MCTRL_GPIO if GPIOLIB
1488 This driver is for the on-chip Serial Controller on
1489 STMicroelectronics STM32 MCUs.
1490 USART supports Rx & Tx functionality.
1491 It support all industry standard baud rates.
1495 config SERIAL_STM32_CONSOLE
1496 bool "Support for console on STM32"
1497 depends on SERIAL_STM32=y
1498 select SERIAL_CORE_CONSOLE
1500 config SERIAL_MVEBU_UART
1501 bool "Marvell EBU serial port support"
1502 depends on ARCH_MVEBU || COMPILE_TEST
1505 This driver is for Marvell EBU SoC's UART. If you have a machine
1506 based on the Armada-3700 SoC and wish to use the on-board serial
1511 config SERIAL_MVEBU_CONSOLE
1512 bool "Console on Marvell EBU serial port"
1513 depends on SERIAL_MVEBU_UART
1514 select SERIAL_CORE_CONSOLE
1515 select SERIAL_EARLYCON
1518 Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1519 (the system console is the device which receives all kernel messages
1520 and warnings and which allows logins in single user mode)
1524 tristate "Actions Semi Owl serial port support"
1525 depends on ARCH_ACTIONS || COMPILE_TEST
1528 This driver is for Actions Semiconductor S500/S900 SoC's UART.
1529 Say 'Y' here if you wish to use the on-board serial port.
1532 config SERIAL_OWL_CONSOLE
1533 bool "Console on Actions Semi Owl serial port"
1534 depends on SERIAL_OWL=y
1535 select SERIAL_CORE_CONSOLE
1536 select SERIAL_EARLYCON
1539 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1540 as the system console.
1543 bool "RDA Micro serial port support"
1544 depends on ARCH_RDA || COMPILE_TEST
1547 This driver is for RDA8810PL SoC's UART.
1548 Say 'Y' here if you wish to use the on-board serial port.
1551 config SERIAL_RDA_CONSOLE
1552 bool "Console on RDA Micro serial port"
1553 depends on SERIAL_RDA=y
1554 select SERIAL_CORE_CONSOLE
1555 select SERIAL_EARLYCON
1558 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1559 console. Only earlycon is implemented currently.
1561 config SERIAL_MILBEAUT_USIO
1562 tristate "Milbeaut USIO/UART serial port support"
1563 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1564 default ARCH_MILBEAUT
1567 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1569 config SERIAL_MILBEAUT_USIO_PORTS
1570 int "Maximum number of CSIO/UART ports (1-8)"
1572 depends on SERIAL_MILBEAUT_USIO
1575 config SERIAL_MILBEAUT_USIO_CONSOLE
1576 bool "Support for console on MILBEAUT USIO/UART serial port"
1577 depends on SERIAL_MILBEAUT_USIO=y
1579 select SERIAL_CORE_CONSOLE
1580 select SERIAL_EARLYCON
1582 Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1583 SoCs as the system console (the system console is the device which
1584 receives all kernel messages and warnings and which allows logins in
1589 config SERIAL_MCTRL_GPIO