tjh.dev
Linux kernel mirror (for testing)
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1# SPDX-License-Identifier: GPL-2.0
2#
3# Serial device configuration
4#
5
6menu "Serial drivers"
7 depends on HAS_IOMEM
8
9config SERIAL_EARLYCON
10 bool
11 depends on SERIAL_CORE
12 help
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.
16
17source "drivers/tty/serial/8250/Kconfig"
18
19comment "Non-8250 serial port support"
20
21config SERIAL_AMBA_PL010
22 tristate "ARM AMBA PL010 serial port support"
23 depends on ARM_AMBA || COMPILE_TEST
24 select SERIAL_CORE
25 help
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.
29
30 If unsure, say N.
31
32config 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
36 help
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).
40
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
46 kernel at boot time.)
47
48config SERIAL_AMBA_PL011
49 tristate "ARM AMBA PL011 serial port support"
50 depends on ARM_AMBA
51 select SERIAL_CORE
52 help
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
55 here.
56
57 If unsure, say N.
58
59config 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
64 help
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).
68
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
74 kernel at boot time.)
75
76config SERIAL_EARLYCON_ARM_SEMIHOST
77 bool "Early console using ARM semihosting"
78 depends on ARM64 || ARM
79 select SERIAL_CORE
80 select SERIAL_CORE_CONSOLE
81 select SERIAL_EARLYCON
82 help
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.
87
88config SERIAL_EARLYCON_RISCV_SBI
89 bool "Early console using RISC-V SBI"
90 depends on RISCV_SBI_V01
91 select SERIAL_CORE
92 select SERIAL_CORE_CONSOLE
93 select SERIAL_EARLYCON
94 help
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.
99
100config SERIAL_SB1250_DUART
101 tristate "BCM1xxx on-chip DUART serial support"
102 depends on SIBYTE_SB1xxx_SOC=y
103 select SERIAL_CORE
104 default y
105 help
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.
111
112 If unsure, say Y. To compile this driver as a module, choose M here:
113 the module will be called sb1250-duart.
114
115config 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
119 default y
120 help
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
124 mode).
125
126 If unsure, say Y.
127
128config SERIAL_ATMEL
129 bool "AT91 on-chip serial port support"
130 depends on ARCH_AT91 || COMPILE_TEST
131 select SERIAL_CORE
132 select SERIAL_MCTRL_GPIO if GPIOLIB
133 select MFD_AT91_USART
134 help
135 This enables the driver for the on-chip UARTs of the Atmel
136 AT91 processors.
137
138config 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
143 help
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).
148
149config SERIAL_ATMEL_PDC
150 bool "Support DMA transfers on AT91 serial port"
151 depends on SERIAL_ATMEL
152 default y
153 help
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.
159
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.
163
164config SERIAL_ATMEL_TTYAT
165 bool "Install as device ttyATn instead of ttySn"
166 depends on SERIAL_ATMEL=y
167 help
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.
175
176 To use this, you should create suitable ttyATn device nodes in
177 /dev/, and pass "console=ttyATn" to the kernel.
178
179 Say Y if you have an external 8250/16C550 UART. If unsure, say N.
180
181config SERIAL_KGDB_NMI
182 bool "Serial console over KGDB NMI debugger port"
183 depends on KGDB_SERIAL_CONSOLE
184 help
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).
187
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.
192
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
196 use raw console.
197
198 If unsure, say N.
199
200config SERIAL_MESON
201 tristate "Meson serial port support"
202 depends on ARCH_MESON || COMPILE_TEST
203 select SERIAL_CORE
204 help
205 This enables the driver for the on-chip UARTs of the Amlogic
206 MesonX processors.
207
208config SERIAL_MESON_CONSOLE
209 bool "Support for console on meson"
210 depends on SERIAL_MESON
211 select SERIAL_CORE_CONSOLE
212 select SERIAL_EARLYCON
213 help
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.
218
219config SERIAL_CLPS711X
220 tristate "CLPS711X serial port support"
221 depends on ARCH_CLPS711X || COMPILE_TEST
222 select SERIAL_CORE
223 select SERIAL_MCTRL_GPIO if GPIOLIB
224 help
225 This enables the driver for the on-chip UARTs of the Cirrus
226 Logic EP711x/EP721x/EP731x processors.
227
228config SERIAL_CLPS711X_CONSOLE
229 bool "Support for console on CLPS711X serial port"
230 depends on SERIAL_CLPS711X=y
231 select SERIAL_CORE_CONSOLE
232 help
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
236 "console=ttyCL1".
237
238config SERIAL_SAMSUNG
239 tristate "Samsung SoC serial support"
240 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
241 select SERIAL_CORE
242 help
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.
248
249config SERIAL_SAMSUNG_UARTS_4
250 bool
251 depends on SERIAL_SAMSUNG
252 default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
253 help
254 Internal node for the common case of 4 Samsung compatible UARTs
255
256config SERIAL_SAMSUNG_UARTS
257 int
258 depends on SERIAL_SAMSUNG
259 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
260 default 3
261 help
262 Select the number of available UART ports for the Samsung S3C
263 serial driver
264
265config 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
270 help
271 Allow selection of the S3C24XX on-board serial ports for use as
272 an virtual console.
273
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
279 boot time.)
280
281config SERIAL_TEGRA
282 tristate "NVIDIA Tegra20/30 SoC serial controller"
283 depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
284 select SERIAL_CORE
285 help
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.
291
292config SERIAL_TEGRA_TCU
293 tristate "NVIDIA Tegra Combined UART"
294 depends on MAILBOX
295 depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
296 select SERIAL_CORE
297 help
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.
301
302config 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
306 default y
307 help
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
311 mode).
312
313 If unsure, say Y.
314
315config SERIAL_MAX3100
316 tristate "MAX3100 support"
317 depends on SPI
318 select SERIAL_CORE
319 help
320 MAX3100 chip support
321
322config SERIAL_MAX310X
323 tristate "MAX310X support"
324 depends on SPI_MASTER
325 select SERIAL_CORE
326 select REGMAP_SPI if SPI_MASTER
327 help
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.
332
333 Say Y here if you want to support this ICs.
334
335config SERIAL_DZ
336 bool "DECstation DZ serial driver"
337 depends on MACH_DECSTATION && 32BIT
338 select SERIAL_CORE
339 default y
340 help
341 DZ11-family serial controllers for DECstations and VAXstations,
342 including the DC7085, M7814, and M7819.
343
344config SERIAL_DZ_CONSOLE
345 bool "Support console on DECstation DZ serial driver"
346 depends on SERIAL_DZ=y
347 select SERIAL_CORE_CONSOLE
348 default y
349 help
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
353 mode).
354
355 Note that the firmware uses ttyS3 as the serial console on
356 DECstations that use this driver.
357
358 If unsure, say Y.
359
360config SERIAL_ZS
361 tristate "DECstation Z85C30 serial support"
362 depends on MACH_DECSTATION
363 select SERIAL_CORE
364 default y
365 help
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.
370
371 If unsure, say Y. To compile this driver as a module, choose M here:
372 the module will be called zs.
373
374config 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
378 default y
379 help
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
383 mode).
384
385 Note that the firmware uses ttyS1 as the serial console on the
386 Maxine and ttyS3 on the others using this driver.
387
388 If unsure, say Y.
389
390config SERIAL_21285
391 tristate "DC21285 serial port support"
392 depends on FOOTBRIDGE
393 select SERIAL_CORE
394 help
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
397 option.
398
399config SERIAL_21285_CONSOLE
400 bool "Console on DC21285 serial port"
401 depends on SERIAL_21285=y
402 select SERIAL_CORE_CONSOLE
403 help
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.
406
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.)
413
414config SERIAL_PXA
415 bool "PXA serial port support (DEPRECATED)"
416 depends on ARCH_PXA || ARCH_MMP
417 select SERIAL_CORE
418 select SERIAL_8250_PXA if SERIAL_8250=y
419 select SERIAL_PXA_NON8250 if !SERIAL_8250=y
420 help
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.
423
424 Unless you have a specific need, you should use SERIAL_8250_PXA
425 instead of this.
426
427config SERIAL_PXA_NON8250
428 bool
429 depends on !SERIAL_8250
430
431config 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
436 help
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.
439
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.)
446
447 Unless you have a specific need, you should use SERIAL_8250_PXA
448 and SERIAL_8250_CONSOLE instead of this.
449
450config SERIAL_SA1100
451 bool "SA1100 serial port support"
452 depends on ARCH_SA1100
453 select SERIAL_CORE
454 select SERIAL_MCTRL_GPIO if GPIOLIB
455 help
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
459 info.
460
461config SERIAL_SA1100_CONSOLE
462 bool "Console on SA1100 serial port"
463 depends on SERIAL_SA1100
464 select SERIAL_CORE_CONSOLE
465 help
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.
468
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.)
475
476config SERIAL_IMX
477 tristate "IMX serial port support"
478 depends on ARCH_MXC || COMPILE_TEST
479 select SERIAL_CORE
480 select RATIONAL
481 select SERIAL_MCTRL_GPIO if GPIOLIB
482 help
483 If you have a machine based on a Motorola IMX CPU you
484 can enable its onboard serial port by enabling this option.
485
486config SERIAL_IMX_CONSOLE
487 tristate "Console on IMX serial port"
488 depends on SERIAL_IMX
489 select SERIAL_CORE_CONSOLE
490 help
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.
493
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.)
499
500config SERIAL_IMX_EARLYCON
501 bool "Earlycon on IMX serial port"
502 depends on ARCH_MXC || COMPILE_TEST
503 depends on OF
504 select SERIAL_CORE
505 select SERIAL_EARLYCON
506 select SERIAL_CORE_CONSOLE
507 default y if SERIAL_IMX_CONSOLE
508 help
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.
511
512config SERIAL_UARTLITE
513 tristate "Xilinx uartlite serial port support"
514 depends on HAS_IOMEM
515 select SERIAL_CORE
516 help
517 Say Y here if you want to use the Xilinx uartlite serial controller.
518
519 To compile this driver as a module, choose M here: the
520 module will be called uartlite.
521
522config 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
527 help
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).
531
532config SERIAL_UARTLITE_NR_UARTS
533 int "Maximum number of uartlite serial ports"
534 depends on SERIAL_UARTLITE
535 range 1 256
536 default 1
537 help
538 Set this to the number of uartlites in your system, or the number
539 you think you might implement.
540
541config SERIAL_SUNCORE
542 bool
543 depends on SPARC
544 select SERIAL_CORE
545 select SERIAL_CORE_CONSOLE
546 default y
547
548config SERIAL_SUNZILOG
549 tristate "Sun Zilog8530 serial support"
550 depends on SPARC
551 help
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.
554
555config SERIAL_SUNZILOG_CONSOLE
556 bool "Console on Sun Zilog8530 serial port"
557 depends on SERIAL_SUNZILOG=y
558 help
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
561 Y to this option.
562
563config SERIAL_SUNSU
564 tristate "Sun SU serial support"
565 depends on SPARC && PCI
566 help
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.
570
571config SERIAL_SUNSU_CONSOLE
572 bool "Console on Sun SU serial port"
573 depends on SERIAL_SUNSU=y
574 help
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
577 Y to this option.
578
579config SERIAL_MUX
580 tristate "Serial MUX support"
581 depends on GSC
582 select SERIAL_CORE
583 default y
584 help
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
590 the Serial MUX:
591
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
597
598config SERIAL_MUX_CONSOLE
599 bool "Support for console on serial MUX"
600 depends on SERIAL_MUX=y
601 select SERIAL_CORE_CONSOLE
602 default y
603
604config PDC_CONSOLE
605 bool "PDC software console support"
606 depends on PARISC && !SERIAL_MUX && VT
607 help
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:
612
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
618
619config SERIAL_SUNSAB
620 tristate "Sun Siemens SAB82532 serial support"
621 depends on SPARC && PCI
622 help
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
625 serial ports.
626
627config SERIAL_SUNSAB_CONSOLE
628 bool "Console on Sun Siemens SAB82532 serial port"
629 depends on SERIAL_SUNSAB=y
630 help
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
633 Y to this option.
634
635config SERIAL_SUNHV
636 bool "Sun4v Hypervisor Console support"
637 depends on SPARC64
638 help
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.
641
642config SERIAL_IP22_ZILOG
643 tristate "SGI Zilog8530 serial support"
644 depends on SGI_HAS_ZILOG
645 select SERIAL_CORE
646 help
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.
649
650config SERIAL_IP22_ZILOG_CONSOLE
651 bool "Console on SGI Zilog8530 serial port"
652 depends on SERIAL_IP22_ZILOG=y
653 select SERIAL_CORE_CONSOLE
654
655config SERIAL_SH_SCI
656 tristate "SuperH SCI(F) serial port support"
657 depends on SUPERH || ARCH_RENESAS || H8300 || COMPILE_TEST
658 select SERIAL_CORE
659 select SERIAL_MCTRL_GPIO if GPIOLIB
660
661config SERIAL_SH_SCI_NR_UARTS
662 int "Maximum number of SCI(F) serial ports" if EXPERT
663 range 1 64 if 64BIT
664 range 1 32 if !64BIT
665 depends on SERIAL_SH_SCI
666 default "3" if H8300
667 default "10" if SUPERH
668 default "18" if ARCH_RENESAS
669 default "2"
670
671config 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
675 default y
676
677config 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
683
684config SERIAL_SH_SCI_DMA
685 bool "DMA support" if EXPERT
686 depends on SERIAL_SH_SCI && DMA_ENGINE
687 default ARCH_RENESAS
688
689config SERIAL_HS_LPC32XX
690 tristate "LPC32XX high speed serial port support"
691 depends on ARCH_LPC32XX || COMPILE_TEST
692 depends on OF
693 select SERIAL_CORE
694 help
695 Support for the LPC32XX high speed serial ports (up to 900kbps).
696 Those are UARTs completely different from the Standard UARTs on the
697 LPC32XX SoC.
698 Choose M or Y here to build this driver.
699
700config 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
704 help
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
707 Y to this option.
708
709config SERIAL_CORE
710 tristate
711
712config SERIAL_CORE_CONSOLE
713 bool
714
715config CONSOLE_POLL
716 bool
717
718config SERIAL_MCF
719 bool "Coldfire serial support"
720 depends on COLDFIRE
721 select SERIAL_CORE
722 help
723 This serial driver supports the Freescale Coldfire serial ports.
724
725config SERIAL_MCF_BAUDRATE
726 int "Default baudrate for Coldfire serial ports"
727 depends on SERIAL_MCF
728 default 19200
729 help
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.
733
734config SERIAL_MCF_CONSOLE
735 bool "Coldfire serial console support"
736 depends on SERIAL_MCF
737 select SERIAL_CORE_CONSOLE
738 help
739 Enable a ColdFire internal serial port to be the system console.
740
741config SERIAL_PMACZILOG
742 tristate "Mac or PowerMac z85c30 ESCC support"
743 depends on (M68K && MAC) || PPC_PMAC
744 select SERIAL_CORE
745 help
746 This driver supports the Zilog z85C30 serial ports found on
747 (Power)Mac machines.
748 Say Y or M if you want to be able to these serial ports.
749
750config SERIAL_PMACZILOG_TTYS
751 bool "Use ttySn device nodes for Zilog z85c30"
752 depends on SERIAL_PMACZILOG
753 help
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.
759
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.
766
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
770 UARTs.
771
772 Say N unless you need the z85c30 ports on your (Power)Mac
773 to appear as /dev/ttySn.
774
775config SERIAL_PMACZILOG_CONSOLE
776 bool "Console on Mac or PowerMac z85c30 serial port"
777 depends on SERIAL_PMACZILOG=y
778 select SERIAL_CORE_CONSOLE
779 help
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
782 Y to this option.
783
784config SERIAL_CPM
785 tristate "CPM SCC/SMC serial port support"
786 depends on CPM2 || CPM1
787 select SERIAL_CORE
788 help
789 This driver supports the SCC and SMC serial ports on Motorola
790 embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
791
792config 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
796 help
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).
800
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.)
807
808config SERIAL_PIC32
809 tristate "Microchip PIC32 serial support"
810 depends on MACH_PIC32
811 select SERIAL_CORE
812 help
813 If you have a PIC32, this driver supports the serial ports.
814
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
817 not as a module.
818
819config SERIAL_PIC32_CONSOLE
820 bool "PIC32 serial console support"
821 depends on SERIAL_PIC32
822 select SERIAL_CORE_CONSOLE
823 help
824 If you have a PIC32, this driver supports the putting a console on one
825 of the serial ports.
826
827 Say Y to use the PIC32 console, otherwise say N.
828
829config SERIAL_MPC52xx
830 tristate "Freescale MPC52xx/MPC512x family PSC serial support"
831 depends on PPC_MPC52xx || PPC_MPC512x
832 select SERIAL_CORE
833 help
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
837 module.
838
839config 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
843 help
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.
846
847config SERIAL_MPC52xx_CONSOLE_BAUD
848 int "Freescale MPC52xx/MPC512x family PSC serial port baud"
849 depends on SERIAL_MPC52xx_CONSOLE=y
850 default "9600"
851 help
852 Select the MPC52xx console baud rate.
853 This value is only used if the bootloader doesn't pass in the
854 console baudrate
855
856config SERIAL_ICOM
857 tristate "IBM Multiport Serial Adapter"
858 depends on PCI
859 depends on PPC_PSERIES || COMPILE_TEST
860 select SERIAL_CORE
861 select FW_LOADER
862 help
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.
866
867 This driver can also be built as a module. If so, the module
868 will be called icom.
869
870config SERIAL_TXX9
871 bool "TMPTX39XX/49XX SIO support"
872 depends on HAS_TXX9_SERIAL
873 select SERIAL_CORE
874 default y
875
876config HAS_TXX9_SERIAL
877 bool
878
879config SERIAL_TXX9_NR_UARTS
880 int "Maximum number of TMPTX39XX/49XX SIO ports"
881 depends on SERIAL_TXX9
882 default "6"
883
884config SERIAL_TXX9_CONSOLE
885 bool "TMPTX39XX/49XX SIO Console support"
886 depends on SERIAL_TXX9=y
887 select SERIAL_CORE_CONSOLE
888
889config SERIAL_TXX9_STDSERIAL
890 bool "TX39XX/49XX SIO act as standard serial"
891 depends on !SERIAL_8250 && SERIAL_TXX9
892
893config SERIAL_VR41XX
894 tristate "NEC VR4100 series Serial Interface Unit support"
895 depends on CPU_VR41XX
896 select SERIAL_CORE
897 help
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.
901
902config SERIAL_VR41XX_CONSOLE
903 bool "Enable NEC VR4100 series Serial Interface Unit console"
904 depends on SERIAL_VR41XX=y
905 select SERIAL_CORE_CONSOLE
906 help
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.
909
910config SERIAL_JSM
911 tristate "Digi International NEO and Classic PCI Support"
912 depends on PCI
913 select SERIAL_CORE
914 help
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.
920
921 If you have a card like this, say Y here, otherwise say N.
922
923 To compile this driver as a module, choose M here: the
924 module will be called jsm.
925
926config SERIAL_MSM
927 tristate "MSM on-chip serial port support"
928 depends on ARCH_QCOM || COMPILE_TEST
929 select SERIAL_CORE
930
931config SERIAL_MSM_CONSOLE
932 bool "MSM serial console support"
933 depends on SERIAL_MSM=y
934 select SERIAL_CORE_CONSOLE
935 select SERIAL_EARLYCON
936
937config 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
941 select SERIAL_CORE
942
943config 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
948 help
949 Serial console driver for Qualcomm Technologies Inc's GENI based
950 QUP hardware.
951
952config SERIAL_VT8500
953 bool "VIA VT8500 on-chip serial port support"
954 depends on ARCH_VT8500 || COMPILE_TEST
955 select SERIAL_CORE
956
957config SERIAL_VT8500_CONSOLE
958 bool "VIA VT8500 serial console support"
959 depends on SERIAL_VT8500=y
960 select SERIAL_CORE_CONSOLE
961
962config SERIAL_OMAP
963 tristate "OMAP serial port support"
964 depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
965 select SERIAL_CORE
966 help
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.
969
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
972 data.
973
974config SERIAL_OMAP_CONSOLE
975 bool "Console on OMAP serial port"
976 depends on SERIAL_OMAP=y
977 select SERIAL_CORE_CONSOLE
978 help
979 Select this option if you would like to use omap serial port as
980 console.
981
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
987 boot time.)
988
989config SERIAL_SIFIVE
990 tristate "SiFive UART support"
991 depends on OF
992 select SERIAL_CORE
993 help
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.
997
998config SERIAL_SIFIVE_CONSOLE
999 bool "Console on SiFive UART"
1000 depends on SERIAL_SIFIVE=y
1001 select SERIAL_CORE_CONSOLE
1002 select SERIAL_EARLYCON
1003 help
1004 Select this option if you would like to use a SiFive UART as the
1005 system console.
1006
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
1012 boot time.)
1013
1014config SERIAL_LANTIQ
1015 tristate "Lantiq serial driver"
1016 depends on (LANTIQ || X86) || COMPILE_TEST
1017 select SERIAL_CORE
1018 help
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.
1022
1023config SERIAL_LANTIQ_CONSOLE
1024 bool "Console on Lantiq UART"
1025 depends on SERIAL_LANTIQ=y
1026 select SERIAL_CORE_CONSOLE
1027 select SERIAL_EARLYCON
1028 help
1029 Select this option if you would like to use a Lantiq UART as the
1030 system console.
1031
1032config SERIAL_QE
1033 tristate "Freescale QUICC Engine serial port support"
1034 depends on QUICC_ENGINE
1035 select SERIAL_CORE
1036 select FW_LOADER
1037 help
1038 This driver supports the QE serial ports on Freescale embedded
1039 PowerPC that contain a QUICC Engine.
1040
1041config SERIAL_SCCNXP
1042 tristate "SCCNXP serial port support"
1043 select SERIAL_CORE
1044 help
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.
1048
1049config SERIAL_SCCNXP_CONSOLE
1050 bool "Console on SCCNXP serial port"
1051 depends on SERIAL_SCCNXP=y
1052 select SERIAL_CORE_CONSOLE
1053 help
1054 Support for console on SCCNXP serial ports.
1055
1056config SERIAL_SC16IS7XX_CORE
1057 tristate
1058
1059config SERIAL_SC16IS7XX
1060 tristate "SC16IS7xx serial support"
1061 select SERIAL_CORE
1062 depends on (SPI_MASTER && !I2C) || I2C
1063 help
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.
1067
1068config SERIAL_SC16IS7XX_I2C
1069 bool "SC16IS7xx for I2C interface"
1070 depends on SERIAL_SC16IS7XX
1071 depends on I2C
1072 select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1073 select REGMAP_I2C if I2C
1074 default y
1075 help
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.
1080
1081config 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
1087 help
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.
1092
1093config SERIAL_TIMBERDALE
1094 tristate "Support for timberdale UART"
1095 select SERIAL_CORE
1096 depends on X86_32 || COMPILE_TEST
1097 help
1098 Add support for UART controller on timberdale.
1099
1100config SERIAL_BCM63XX
1101 tristate "Broadcom BCM63xx/BCM33xx UART support"
1102 select SERIAL_CORE
1103 depends on ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1104 default ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
1105 help
1106 This enables the driver for the onchip UART core found on
1107 the following chipsets:
1108
1109 BCM33xx (cable modem)
1110 BCM63xx/BCM63xxx (DSL)
1111 BCM68xx (PON)
1112 BCM7xxx (STB) - DOCSIS console
1113
1114config 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
1119 help
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.
1122
1123config SERIAL_GRLIB_GAISLER_APBUART
1124 tristate "GRLIB APBUART serial support"
1125 depends on OF && SPARC
1126 select SERIAL_CORE
1127 help
1128 Add support for the GRLIB APBUART serial port.
1129
1130config 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
1134 help
1135 Support for running a console on the GRLIB APBUART
1136
1137config SERIAL_ALTERA_JTAGUART
1138 tristate "Altera JTAG UART support"
1139 select SERIAL_CORE
1140 help
1141 This driver supports the Altera JTAG UART port.
1142
1143config 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
1148 help
1149 Enable a Altera JTAG UART port to be the system console.
1150
1151config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1152 bool "Bypass output when no connection"
1153 depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1154 select SERIAL_CORE_CONSOLE
1155 help
1156 Bypass console output and keep going even if there is no
1157 JTAG terminal connection with the host.
1158
1159config SERIAL_ALTERA_UART
1160 tristate "Altera UART support"
1161 select SERIAL_CORE
1162 help
1163 This driver supports the Altera softcore UART port.
1164
1165config SERIAL_ALTERA_UART_MAXPORTS
1166 int "Maximum number of Altera UART ports"
1167 depends on SERIAL_ALTERA_UART
1168 default 4
1169 help
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.
1173
1174config SERIAL_ALTERA_UART_BAUDRATE
1175 int "Default baudrate for Altera UART ports"
1176 depends on SERIAL_ALTERA_UART
1177 default 115200
1178 help
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.
1182
1183config 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
1188 help
1189 Enable a Altera UART port to be the system console.
1190
1191config SERIAL_PCH_UART
1192 tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1193 depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
1194 select SERIAL_CORE
1195 help
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.
1199
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.
1206
1207config 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
1211 help
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).
1215
1216config SERIAL_MXS_AUART
1217 tristate "MXS AUART support"
1218 depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1219 select SERIAL_CORE
1220 select SERIAL_MCTRL_GPIO if GPIOLIB
1221 help
1222 This driver supports the MXS and Alphascale ASM9260 Application
1223 UART (AUART) port.
1224
1225config SERIAL_MXS_AUART_CONSOLE
1226 bool "MXS AUART console support"
1227 depends on SERIAL_MXS_AUART=y
1228 select SERIAL_CORE_CONSOLE
1229 help
1230 Enable a MXS AUART port to be the system console.
1231
1232config SERIAL_XILINX_PS_UART
1233 tristate "Cadence (Xilinx Zynq) UART support"
1234 depends on OF
1235 select SERIAL_CORE
1236 help
1237 This driver supports the Cadence UART. It is found e.g. in Xilinx
1238 Zynq.
1239
1240config 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
1245 help
1246 Enable a Cadence UART port to be the system console.
1247
1248config SERIAL_AR933X
1249 tristate "AR933X serial port support"
1250 depends on HAVE_CLK && ATH79
1251 select SERIAL_CORE
1252 select SERIAL_MCTRL_GPIO if GPIOLIB
1253 help
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.
1256
1257 To compile this driver as a module, choose M here: the
1258 module will be called ar933x_uart.
1259
1260config SERIAL_AR933X_CONSOLE
1261 bool "Console on AR933X serial port"
1262 depends on SERIAL_AR933X=y
1263 select SERIAL_CORE_CONSOLE
1264 help
1265 Enable a built-in UART port of the AR933X to be the system console.
1266
1267config SERIAL_AR933X_NR_UARTS
1268 int "Maximum number of AR933X serial ports"
1269 depends on SERIAL_AR933X
1270 default "2"
1271 help
1272 Set this to the number of serial ports you want the driver
1273 to support.
1274
1275config 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
1280
1281config SERIAL_MPS2_UART
1282 bool "MPS2 UART port"
1283 depends on ARCH_MPS2 || COMPILE_TEST
1284 select SERIAL_CORE
1285 help
1286 This driver support the UART ports on ARM MPS2.
1287
1288config SERIAL_ARC
1289 tristate "ARC UART driver support"
1290 select SERIAL_CORE
1291 help
1292 Driver for on-chip UART for ARC(Synopsys) for the legacy
1293 FPGA Boards (ML50x/ARCAngel4)
1294
1295config SERIAL_ARC_CONSOLE
1296 bool "Console on ARC UART"
1297 depends on SERIAL_ARC=y
1298 select SERIAL_CORE_CONSOLE
1299 select SERIAL_EARLYCON
1300 help
1301 Enable system Console on ARC UART
1302
1303config SERIAL_ARC_NR_PORTS
1304 int "Number of ARC UART ports"
1305 depends on SERIAL_ARC
1306 range 1 3
1307 default "1"
1308 help
1309 Set this to the number of serial ports you want the driver
1310 to support.
1311
1312config SERIAL_RP2
1313 tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1314 depends on PCI
1315 select SERIAL_CORE
1316 help
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).
1321
1322 To compile this driver as a module, choose M here: the
1323 module will be called rp2.
1324
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.
1327
1328config SERIAL_RP2_NR_UARTS
1329 int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1330 depends on SERIAL_RP2
1331 default "32"
1332 help
1333 If multiple cards are present, the default limit of 32 ports may
1334 need to be increased.
1335
1336config SERIAL_FSL_LPUART
1337 tristate "Freescale lpuart serial port support"
1338 depends on HAS_DMA
1339 select SERIAL_CORE
1340 help
1341 Support for the on-chip lpuart on some Freescale SOCs.
1342
1343config 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
1348 help
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.
1351
1352config SERIAL_FSL_LINFLEXUART
1353 tristate "Freescale LINFlexD UART serial port support"
1354 depends on PRINTK
1355 select SERIAL_CORE
1356 help
1357 Support for the on-chip LINFlexD UART on some Freescale SOCs.
1358
1359config 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
1364 help
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.
1367
1368config SERIAL_CONEXANT_DIGICOLOR
1369 tristate "Conexant Digicolor CX92xxx USART serial port support"
1370 depends on OF
1371 select SERIAL_CORE
1372 help
1373 Support for the on-chip USART on Conexant Digicolor SoCs.
1374
1375config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1376 bool "Console on Conexant Digicolor serial port"
1377 depends on SERIAL_CONEXANT_DIGICOLOR=y
1378 select SERIAL_CORE_CONSOLE
1379 help
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.
1382
1383config SERIAL_ST_ASC
1384 tristate "ST ASC serial port support"
1385 select SERIAL_CORE
1386 depends on ARM || COMPILE_TEST
1387 help
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.
1392
1393 If unsure, say N.
1394
1395config SERIAL_ST_ASC_CONSOLE
1396 bool "Support for console on ST ASC"
1397 depends on SERIAL_ST_ASC=y
1398 select SERIAL_CORE_CONSOLE
1399
1400config SERIAL_MEN_Z135
1401 tristate "MEN 16z135 Support"
1402 select SERIAL_CORE
1403 depends on MCB
1404 help
1405 Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1406 on a MCB carrier.
1407
1408 This driver can also be build as a module. If so, the module will be called
1409 men_z135_uart.ko
1410
1411config SERIAL_SPRD
1412 tristate "Support for Spreadtrum serial"
1413 select SERIAL_CORE
1414 depends on COMMON_CLK
1415 help
1416 This enables the driver for the Spreadtrum's serial.
1417
1418config SERIAL_SPRD_CONSOLE
1419 bool "Spreadtrum UART console support"
1420 depends on SERIAL_SPRD=y
1421 select SERIAL_CORE_CONSOLE
1422 select SERIAL_EARLYCON
1423 help
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.
1428
1429config SERIAL_STM32
1430 tristate "STMicroelectronics STM32 serial port support"
1431 select SERIAL_CORE
1432 depends on ARCH_STM32 || COMPILE_TEST
1433 select SERIAL_MCTRL_GPIO if GPIOLIB
1434 help
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.
1439
1440 If unsure, say N.
1441
1442config SERIAL_STM32_CONSOLE
1443 bool "Support for console on STM32"
1444 depends on SERIAL_STM32=y
1445 select SERIAL_CORE_CONSOLE
1446
1447config SERIAL_MVEBU_UART
1448 bool "Marvell EBU serial port support"
1449 depends on ARCH_MVEBU || COMPILE_TEST
1450 depends on COMMON_CLK
1451 select SERIAL_CORE
1452 help
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
1455 port,
1456 say 'Y' here.
1457 Otherwise, say 'N'.
1458
1459config 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
1464 default y
1465 help
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)
1469 Otherwise, say 'N'.
1470
1471config SERIAL_OWL
1472 tristate "Actions Semi Owl serial port support"
1473 depends on ARCH_ACTIONS || COMPILE_TEST
1474 select SERIAL_CORE
1475 help
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.
1478 Otherwise, say 'N'.
1479
1480config 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
1485 default y
1486 help
1487 Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1488 as the system console.
1489
1490config SERIAL_RDA
1491 bool "RDA Micro serial port support"
1492 depends on ARCH_RDA || COMPILE_TEST
1493 select SERIAL_CORE
1494 help
1495 This driver is for RDA8810PL SoC's UART.
1496 Say 'Y' here if you wish to use the on-board serial port.
1497 Otherwise, say 'N'.
1498
1499config 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
1504 default y
1505 help
1506 Say 'Y' here if you wish to use the RDA8810PL UART as the system
1507 console. Only earlycon is implemented currently.
1508
1509config SERIAL_MILBEAUT_USIO
1510 tristate "Milbeaut USIO/UART serial port support"
1511 depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1512 default ARCH_MILBEAUT
1513 select SERIAL_CORE
1514 help
1515 This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1516
1517config SERIAL_MILBEAUT_USIO_PORTS
1518 int "Maximum number of CSIO/UART ports (1-8)"
1519 range 1 8
1520 depends on SERIAL_MILBEAUT_USIO
1521 default "4"
1522
1523config SERIAL_MILBEAUT_USIO_CONSOLE
1524 bool "Support for console on MILBEAUT USIO/UART serial port"
1525 depends on SERIAL_MILBEAUT_USIO=y
1526 default y
1527 select SERIAL_CORE_CONSOLE
1528 select SERIAL_EARLYCON
1529 help
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
1533 single user mode).
1534
1535config 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
1540 select SERIAL_CORE
1541 help
1542 This driver is for the FPGA-based LiteUART serial controller from LiteX
1543 SoC builder.
1544
1545 Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1546 Otherwise, say 'N'.
1547
1548config SERIAL_LITEUART_MAX_PORTS
1549 int "Maximum number of LiteUART ports"
1550 depends on SERIAL_LITEUART
1551 default "1"
1552 help
1553 Set this to the maximum number of serial ports you want the driver
1554 to support.
1555
1556config 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
1561 help
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).
1566 Otherwise, say 'N'.
1567
1568config SERIAL_SUNPLUS
1569 tristate "Sunplus UART support"
1570 depends on ARCH_SUNPLUS || COMPILE_TEST
1571 select SERIAL_CORE
1572 help
1573 Select this option if you would like to use Sunplus serial port on
1574 Sunplus SoC SP7021.
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.
1579
1580config SERIAL_SUNPLUS_CONSOLE
1581 bool "Console on Sunplus UART"
1582 depends on SERIAL_SUNPLUS
1583 select SERIAL_CORE_CONSOLE
1584 select SERIAL_EARLYCON
1585 help
1586 Select this option if you would like to use a Sunplus UART as the
1587 system console.
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
1591 "console=ttySUPx".
1592
1593endmenu
1594
1595config SERIAL_MCTRL_GPIO
1596 tristate