xref: /linux/drivers/tty/serial/Kconfig (revision 4f9786035f9e519db41375818e1d0b5f20da2f10)
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_SEMIHOST
77	bool "Early console using Arm compatible semihosting"
78	depends on ARM64 || ARM || RISCV
79	select SERIAL_CORE
80	select SERIAL_CORE_CONSOLE
81	select SERIAL_EARLYCON
82	help
83	  Support for early debug console using Arm compatible semihosting.
84	  This enables the console before standard serial driver is probed.
85	  This is enabled with "earlycon=smh" on the kernel command line.
86	  The console is enabled when early_param is processed.
87
88config SERIAL_EARLYCON_RISCV_SBI
89	bool "Early console using RISC-V SBI"
90	depends on RISCV_SBI
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 COMMON_CLK
131	depends on ARCH_AT91 || ARCH_LAN969X || COMPILE_TEST
132	select SERIAL_CORE
133	select SERIAL_MCTRL_GPIO if GPIOLIB
134	select MFD_AT91_USART
135	help
136	  This enables the driver for the on-chip UARTs of the Atmel
137	  AT91 processors.
138
139config SERIAL_ATMEL_CONSOLE
140	bool "Support for console on AT91 serial port"
141	depends on SERIAL_ATMEL=y
142	select SERIAL_CORE_CONSOLE
143	select SERIAL_EARLYCON
144	help
145	  Say Y here if you wish to use an on-chip UART on a Atmel
146	  AT91 processor as the system console (the system
147	  console is the device which receives all kernel messages and
148	  warnings and which allows logins in single user mode).
149
150config SERIAL_ATMEL_PDC
151	bool "Support DMA transfers on AT91 serial port"
152	depends on SERIAL_ATMEL
153	default y
154	help
155	  Say Y here if you wish to use the PDC to do DMA transfers to
156	  and from the Atmel AT91 serial port. In order to
157	  actually use DMA transfers, make sure that the use_dma_tx
158	  and use_dma_rx members in the atmel_uart_data struct is set
159	  appropriately for each port.
160
161	  Note that break and error handling currently doesn't work
162	  properly when DMA is enabled. Make sure that ports where
163	  this matters don't use DMA.
164
165config SERIAL_ATMEL_TTYAT
166	bool "Install as device ttyATn instead of ttySn"
167	depends on SERIAL_ATMEL=y
168	help
169	  Say Y here if you wish to have the internal AT91 UARTs
170	  appear as /dev/ttyATn (major 204, minor starting at 154)
171	  instead of the normal /dev/ttySn (major 4, minor starting at
172	  64). This is necessary if you also want other UARTs, such as
173	  external 8250/16C550 compatible UARTs.
174	  The ttySn nodes are legally reserved for the 8250 serial driver
175	  but are often misused by other serial drivers.
176
177	  To use this, you should create suitable ttyATn device nodes in
178	  /dev/, and pass "console=ttyATn" to the kernel.
179
180	  Say Y if you have an external 8250/16C550 UART.  If unsure, say N.
181
182config SERIAL_MESON
183	tristate "Meson serial port support"
184	depends on ARCH_MESON || COMPILE_TEST
185	select SERIAL_CORE
186	help
187	  This enables the driver for the on-chip UARTs of the Amlogic
188	  MesonX processors.
189
190config SERIAL_MESON_CONSOLE
191	bool "Support for console on meson"
192	depends on SERIAL_MESON
193	select SERIAL_CORE_CONSOLE
194	select SERIAL_EARLYCON
195	help
196	  Say Y here if you wish to use a Amlogic MesonX UART as the
197	  system console (the system console is the device which
198	  receives all kernel messages and warnings and which allows
199	  logins in single user mode) as /dev/ttyAMLx.
200
201config SERIAL_CLPS711X
202	tristate "CLPS711X serial port support"
203	depends on ARCH_CLPS711X || COMPILE_TEST
204	select SERIAL_CORE
205	select SERIAL_MCTRL_GPIO if GPIOLIB
206	help
207	  This enables the driver for the on-chip UARTs of the Cirrus
208	  Logic EP711x/EP721x/EP731x processors.
209
210config SERIAL_CLPS711X_CONSOLE
211	bool "Support for console on CLPS711X serial port"
212	depends on SERIAL_CLPS711X=y
213	select SERIAL_CORE_CONSOLE
214	help
215	  Even if you say Y here, the currently visible virtual console
216	  (/dev/tty0) will still be used as the system console by default, but
217	  you can alter that using a kernel command line option such as
218	  "console=ttyCL1".
219
220config SERIAL_SAMSUNG
221	tristate "Samsung SoC serial support"
222	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
223	select SERIAL_CORE
224	help
225	  Support for the on-chip UARTs on the Samsung
226	  S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
227	  /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
228	  these ports, depending on how the serial port pins are configured.
229
230	  Choose Y/M here only if you build for such SoC.
231
232config SERIAL_SAMSUNG_UARTS
233	int
234	depends on SERIAL_SAMSUNG
235	default 4
236	help
237	  Select the number of available UART ports for the Samsung S3C
238	  serial driver
239
240config SERIAL_SAMSUNG_CONSOLE
241	bool "Support for console on Samsung SoC serial port"
242	depends on SERIAL_SAMSUNG
243	select SERIAL_CORE_CONSOLE
244	select SERIAL_EARLYCON
245	help
246	  Allow selection of the S3C24XX on-board serial ports for use as
247	  an virtual console.
248
249	  Even if you say Y here, the currently visible virtual console
250	  (/dev/tty0) will still be used as the system console by default, but
251	  you can alter that using a kernel command line option such as
252	  "console=ttySACx". (Try "man bootparam" or see the documentation of
253	  your boot loader about how to pass options to the kernel at
254	  boot time.)
255
256config SERIAL_TEGRA
257	tristate "NVIDIA Tegra20/30 SoC serial controller"
258	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
259	select SERIAL_CORE
260	help
261	  Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
262	  providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
263	  provide all of these ports, depending on how the serial port
264	  are enabled). This driver uses the APB DMA to achieve higher baudrate
265	  and better performance.
266
267config SERIAL_TEGRA_TCU
268	tristate "NVIDIA Tegra Combined UART"
269	depends on MAILBOX
270	depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
271	select SERIAL_CORE
272	help
273	  Support for the mailbox-based TCU (Tegra Combined UART) serial port.
274	  TCU is a virtual serial port that allows multiplexing multiple data
275	  streams into a single hardware serial port.
276
277config SERIAL_TEGRA_TCU_CONSOLE
278	bool "Support for console on a Tegra TCU serial port"
279	depends on SERIAL_TEGRA_TCU=y
280	select SERIAL_CORE_CONSOLE
281	default y
282	help
283	  If you say Y here, it will be possible to use a the Tegra TCU as the
284	  system console (the system console is the device which receives all
285	  kernel messages and warnings and which allows logins in single user
286	  mode).
287
288	  If unsure, say Y.
289
290config SERIAL_TEGRA_UTC
291	tristate "NVIDIA Tegra UART Trace Controller"
292	depends on ARCH_TEGRA || COMPILE_TEST
293	select SERIAL_CORE
294	help
295	  Support for Tegra UTC (UART Trace controller) client serial port.
296
297	  UTC is a HW based serial port that allows multiplexing multiple data
298	  streams of up to 16 UTC clients into a single hardware serial port.
299
300config SERIAL_TEGRA_UTC_CONSOLE
301	bool "Support for console on a Tegra UTC serial port"
302	depends on SERIAL_TEGRA_UTC
303	select SERIAL_CORE_CONSOLE
304	default SERIAL_TEGRA_UTC
305	help
306	  If you say Y here, it will be possible to use a Tegra UTC client as
307	  the system console (the system console is the device which receives
308	  all kernel messages and warnings and which allows logins in single
309	  user mode).
310
311	  If unsure, say Y.
312
313config SERIAL_MAX3100
314	tristate "MAX3100/3110/3111/3222 support"
315	depends on SPI
316	select SERIAL_CORE
317	help
318	  This selects support for an advanced UART from Maxim.
319	  Supported ICs are MAX3100, MAX3110, MAX3111, MAX3222.
320
321	  Say Y here if you want to support these ICs.
322
323config SERIAL_MAX310X
324	tristate "MAX310X support"
325	depends on SPI_MASTER
326	select SERIAL_CORE
327	select REGMAP_SPI if SPI_MASTER
328	select REGMAP_I2C if I2C
329	help
330	  This selects support for an advanced UART from Maxim (Dallas).
331	  Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
332	  Each IC contains 128 words each of receive and transmit FIFO
333	  that can be controlled through I2C or high-speed SPI.
334
335	  Say Y here if you want to support this ICs.
336
337config SERIAL_DZ
338	bool "DECstation DZ serial driver"
339	depends on MACH_DECSTATION && 32BIT
340	select SERIAL_CORE
341	default y
342	help
343	  DZ11-family serial controllers for DECstations and VAXstations,
344	  including the DC7085, M7814, and M7819.
345
346config SERIAL_DZ_CONSOLE
347	bool "Support console on DECstation DZ serial driver"
348	depends on SERIAL_DZ=y
349	select SERIAL_CORE_CONSOLE
350	default y
351	help
352	  If you say Y here, it will be possible to use a serial port as the
353	  system console (the system console is the device which receives all
354	  kernel messages and warnings and which allows logins in single user
355	  mode).
356
357	  Note that the firmware uses ttyS3 as the serial console on
358	  DECstations that use this driver.
359
360	  If unsure, say Y.
361
362config SERIAL_ZS
363	tristate "DECstation Z85C30 serial support"
364	depends on MACH_DECSTATION
365	select SERIAL_CORE
366	default y
367	help
368	  Support for the Zilog 85C350 serial communications controller used
369	  for serial ports in newer DECstation systems.  These include the
370	  DECsystem 5900 and all models of the DECstation and DECsystem 5000
371	  systems except from model 200.
372
373	  If unsure, say Y.  To compile this driver as a module, choose M here:
374	  the module will be called zs.
375
376config SERIAL_ZS_CONSOLE
377	bool "Support for console on a DECstation Z85C30 serial port"
378	depends on SERIAL_ZS=y
379	select SERIAL_CORE_CONSOLE
380	default y
381	help
382	  If you say Y here, it will be possible to use a serial port as the
383	  system console (the system console is the device which receives all
384	  kernel messages and warnings and which allows logins in single user
385	  mode).
386
387	  Note that the firmware uses ttyS1 as the serial console on the
388	  Maxine and ttyS3 on the others using this driver.
389
390	  If unsure, say Y.
391
392config SERIAL_21285
393	tristate "DC21285 serial port support"
394	depends on FOOTBRIDGE
395	select SERIAL_CORE
396	help
397	  If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
398	  PCI bridge you can enable its onboard serial port by enabling this
399	  option.
400
401config SERIAL_21285_CONSOLE
402	bool "Console on DC21285 serial port"
403	depends on SERIAL_21285=y
404	select SERIAL_CORE_CONSOLE
405	help
406	  If you have enabled the serial port on the 21285 footbridge you can
407	  make it the console by answering Y to this option.
408
409	  Even if you say Y here, the currently visible virtual console
410	  (/dev/tty0) will still be used as the system console by default, but
411	  you can alter that using a kernel command line option such as
412	  "console=ttyFB". (Try "man bootparam" or see the documentation of
413	  your boot loader (lilo or loadlin) about how to pass options to the
414	  kernel at boot time.)
415
416config SERIAL_PXA
417	bool "PXA serial port support (DEPRECATED)"
418	depends on ARCH_PXA || ARCH_MMP
419	select SERIAL_CORE
420	select SERIAL_8250_PXA if SERIAL_8250=y
421	select SERIAL_PXA_NON8250 if !SERIAL_8250=y
422	help
423	  If you have a machine based on an Intel XScale PXA2xx CPU you
424	  can enable its onboard serial ports by enabling this option.
425
426	  Unless you have a specific need, you should use SERIAL_8250_PXA
427	  instead of this.
428
429config SERIAL_PXA_NON8250
430	bool
431	depends on !SERIAL_8250 || COMPILE_TEST
432
433config SERIAL_PXA_CONSOLE
434	bool "Console on PXA serial port (DEPRECATED)"
435	depends on SERIAL_PXA
436	select SERIAL_CORE_CONSOLE
437	select SERIAL_8250_CONSOLE if SERIAL_8250=y
438	help
439	  If you have enabled the serial port on the Intel XScale PXA
440	  CPU you can make it the console by answering Y to this option.
441
442	  Even if you say Y here, the currently visible virtual console
443	  (/dev/tty0) will still be used as the system console by default, but
444	  you can alter that using a kernel command line option such as
445	  "console=ttySA0". (Try "man bootparam" or see the documentation of
446	  your boot loader (lilo or loadlin) about how to pass options to the
447	  kernel at boot time.)
448
449	  Unless you have a specific need, you should use SERIAL_8250_PXA
450	  and SERIAL_8250_CONSOLE instead of this.
451
452config SERIAL_SA1100
453	bool "SA1100 serial port support"
454	depends on ARCH_SA1100
455	select SERIAL_CORE
456	select SERIAL_MCTRL_GPIO if GPIOLIB
457	help
458	  If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
459	  can enable its onboard serial port by enabling this option.
460	  Please read <file:Documentation/arch/arm/sa1100/serial_uart.rst> for
461	  further info.
462
463config SERIAL_SA1100_CONSOLE
464	bool "Console on SA1100 serial port"
465	depends on SERIAL_SA1100
466	select SERIAL_CORE_CONSOLE
467	help
468	  If you have enabled the serial port on the SA1100/SA1110 StrongARM
469	  CPU you can make it the console by answering Y to this option.
470
471	  Even if you say Y here, the currently visible virtual console
472	  (/dev/tty0) will still be used as the system console by default, but
473	  you can alter that using a kernel command line option such as
474	  "console=ttySA0". (Try "man bootparam" or see the documentation of
475	  your boot loader (lilo or loadlin) about how to pass options to the
476	  kernel at boot time.)
477
478config SERIAL_IMX
479	tristate "IMX serial port support"
480	depends on ARCH_MXC || COMPILE_TEST
481	select SERIAL_CORE
482	select RATIONAL
483	select SERIAL_MCTRL_GPIO if GPIOLIB
484	help
485	  If you have a machine based on a Motorola IMX CPU you
486	  can enable its onboard serial port by enabling this option.
487
488config SERIAL_IMX_CONSOLE
489	tristate "Console on IMX serial port"
490	depends on SERIAL_IMX
491	select SERIAL_CORE_CONSOLE
492	help
493	  If you have enabled the serial port on the Freescale IMX
494	  CPU you can make it the console by answering Y/M to this option.
495
496	  Even if you say Y/M here, the currently visible virtual console
497	  (/dev/tty0) will still be used as the system console by default, but
498	  you can alter that using a kernel command line option such as
499	  "console=ttymxc0". (Try "man bootparam" or see the documentation of
500	  your bootloader about how to pass options to the kernel at boot time.)
501
502config SERIAL_IMX_EARLYCON
503	bool "Earlycon on IMX serial port"
504	depends on ARCH_MXC || COMPILE_TEST
505	depends on OF
506	select SERIAL_CORE
507	select SERIAL_EARLYCON
508	select SERIAL_CORE_CONSOLE
509	default y if SERIAL_IMX_CONSOLE
510	help
511	  If you have enabled the earlycon on the Freescale IMX
512	  CPU you can make it the earlycon by answering Y to this option.
513
514config SERIAL_UARTLITE
515	tristate "Xilinx uartlite serial port support"
516	depends on HAS_IOMEM
517	select SERIAL_CORE
518	help
519	  Say Y here if you want to use the Xilinx uartlite serial controller.
520
521	  To compile this driver as a module, choose M here: the
522	  module will be called uartlite.
523
524config SERIAL_UARTLITE_CONSOLE
525	bool "Support for console on Xilinx uartlite serial port"
526	depends on SERIAL_UARTLITE=y
527	select SERIAL_CORE_CONSOLE
528	select SERIAL_EARLYCON
529	help
530	  Say Y here if you wish to use a Xilinx uartlite as the system
531	  console (the system console is the device which receives all kernel
532	  messages and warnings and which allows logins in single user mode).
533
534config SERIAL_UARTLITE_NR_UARTS
535	int "Maximum number of uartlite serial ports"
536	depends on SERIAL_UARTLITE
537	range 1 256
538	default 1
539	help
540	  Set this to the number of uartlites in your system, or the number
541	  you think you might implement.
542	  If maximum number of uartlite serial ports is more than 4, then the
543	  driver uses dynamic allocation instead of static allocation for major
544	  number.
545
546config SERIAL_SUNCORE
547	bool
548	depends on SPARC
549	select SERIAL_CORE
550	select SERIAL_CORE_CONSOLE
551	default y
552
553config SERIAL_SUNZILOG
554	tristate "Sun Zilog8530 serial support"
555	depends on SPARC
556	help
557	  This driver supports the Zilog8530 serial ports found on many Sparc
558	  systems.  Say Y or M if you want to be able to these serial ports.
559
560config SERIAL_SUNZILOG_CONSOLE
561	bool "Console on Sun Zilog8530 serial port"
562	depends on SERIAL_SUNZILOG=y
563	help
564	  If you would like to be able to use the Zilog8530 serial port
565	  on your Sparc system as the console, you can do so by answering
566	  Y to this option.
567
568config SERIAL_SUNSU
569	tristate "Sun SU serial support"
570	depends on SPARC && PCI
571	help
572	  This driver supports the 8250 serial ports that run the keyboard and
573	  mouse on (PCI) UltraSPARC systems.  Say Y or M if you want to be able
574	  to these serial ports.
575
576config SERIAL_SUNSU_CONSOLE
577	bool "Console on Sun SU serial port"
578	depends on SERIAL_SUNSU=y
579	help
580	  If you would like to be able to use the SU serial port
581	  on your Sparc system as the console, you can do so by answering
582	  Y to this option.
583
584config SERIAL_MUX
585	tristate "Serial MUX support"
586	depends on GSC
587	select SERIAL_CORE
588	default y
589	help
590	  Saying Y here will enable the hardware MUX serial driver for
591	  the Nova, K class systems and D class with a 'remote control card'.
592	  The hardware MUX is not 8250/16550 compatible therefore the
593	  /dev/ttyB0 device is shared between the Serial MUX and the PDC
594	  software console. The following steps need to be completed to use
595	  the Serial MUX:
596
597	    1. create the device entry (mknod /dev/ttyB0 c 11 0)
598	    2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
599	    3. Add device ttyB0 to /etc/securetty (if you want to log on as
600		 root on this console.)
601	    4. Change the kernel command console parameter to: console=ttyB0
602
603config SERIAL_MUX_CONSOLE
604	bool "Support for console on serial MUX"
605	depends on SERIAL_MUX=y
606	select SERIAL_CORE_CONSOLE
607	default y
608
609config SERIAL_SUNSAB
610	tristate "Sun Siemens SAB82532 serial support"
611	depends on SPARC && PCI
612	help
613	  This driver supports the Siemens SAB82532 DUSCC serial ports on newer
614	  (PCI) UltraSPARC systems.  Say Y or M if you want to be able to these
615	  serial ports.
616
617config SERIAL_SUNSAB_CONSOLE
618	bool "Console on Sun Siemens SAB82532 serial port"
619	depends on SERIAL_SUNSAB=y
620	help
621	  If you would like to be able to use the SAB82532 serial port
622	  on your Sparc system as the console, you can do so by answering
623	  Y to this option.
624
625config SERIAL_SUNHV
626	bool "Sun4v Hypervisor Console support"
627	depends on SPARC64
628	help
629	  This driver supports the console device found on SUN4V Sparc
630	  systems.  Say Y if you want to be able to use this device.
631
632config SERIAL_IP22_ZILOG
633	tristate "SGI Zilog8530 serial support"
634	depends on SGI_HAS_ZILOG
635	select SERIAL_CORE
636	help
637	  This driver supports the Zilog8530 serial ports found on SGI
638	  systems.  Say Y or M if you want to be able to these serial ports.
639
640config SERIAL_IP22_ZILOG_CONSOLE
641	bool "Console on SGI Zilog8530 serial port"
642	depends on SERIAL_IP22_ZILOG=y
643	select SERIAL_CORE_CONSOLE
644
645config SERIAL_SH_SCI
646	tristate "SuperH SCI(F) serial port support"
647	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
648	select SERIAL_CORE
649	select SERIAL_MCTRL_GPIO if GPIOLIB
650
651config SERIAL_SH_SCI_NR_UARTS
652	int "Maximum number of SCI(F) serial ports" if EXPERT
653	range 1 64 if 64BIT
654	range 1 32 if !64BIT
655	depends on SERIAL_SH_SCI
656	default "10" if SUPERH
657	default "18" if ARCH_RENESAS
658	default "2"
659
660config SERIAL_SH_SCI_CONSOLE
661	bool "Support for console on SuperH SCI(F)" if EXPERT
662	depends on SERIAL_SH_SCI=y
663	select SERIAL_CORE_CONSOLE
664	default y
665
666config SERIAL_SH_SCI_EARLYCON
667	bool "Support for early console on SuperH SCI(F)" if EXPERT
668	depends on SERIAL_SH_SCI=y
669	select SERIAL_CORE_CONSOLE
670	select SERIAL_EARLYCON
671	default ARCH_RENESAS
672
673config SERIAL_SH_SCI_DMA
674	bool "DMA support" if EXPERT
675	depends on SERIAL_SH_SCI && DMA_ENGINE
676	default ARCH_RENESAS
677
678config SERIAL_HS_LPC32XX
679	tristate "LPC32XX high speed serial port support"
680	depends on ARCH_LPC32XX || COMPILE_TEST
681	depends on OF
682	select SERIAL_CORE
683	help
684	  Support for the LPC32XX high speed serial ports (up to 900kbps).
685	  Those are UARTs completely different from the Standard UARTs on the
686	  LPC32XX SoC.
687	  Choose M or Y here to build this driver.
688
689config SERIAL_HS_LPC32XX_CONSOLE
690	bool "Enable LPC32XX high speed UART serial console"
691	depends on SERIAL_HS_LPC32XX=y
692	select SERIAL_CORE_CONSOLE
693	help
694	  If you would like to be able to use one of the high speed serial
695	  ports on the LPC32XX as the console, you can do so by answering
696	  Y to this option.
697
698config SERIAL_CORE
699	tristate
700
701config SERIAL_CORE_CONSOLE
702	bool
703
704config CONSOLE_POLL
705	bool
706
707config SERIAL_MCF
708	bool "Coldfire serial support"
709	depends on COLDFIRE
710	select SERIAL_CORE
711	help
712	  This serial driver supports the Freescale Coldfire serial ports.
713
714config SERIAL_MCF_BAUDRATE
715	int "Default baudrate for Coldfire serial ports"
716	depends on SERIAL_MCF
717	default 19200
718	help
719	  This setting lets you define what the default baudrate is for the
720	  ColdFire serial ports. The usual default varies from board to board,
721	  and this setting is a way of catering for that.
722
723config SERIAL_MCF_CONSOLE
724	bool "Coldfire serial console support"
725	depends on SERIAL_MCF
726	select SERIAL_CORE_CONSOLE
727	help
728	  Enable a ColdFire internal serial port to be the system console.
729
730config SERIAL_PMACZILOG
731	tristate "Mac or PowerMac z85c30 ESCC support"
732	depends on (M68K && MAC) || PPC_PMAC
733	select SERIAL_CORE
734	help
735	  This driver supports the Zilog z85C30 serial ports found on
736	  (Power)Mac machines.
737	  Say Y or M if you want to be able to these serial ports.
738
739config SERIAL_PMACZILOG_TTYS
740	bool "Use ttySn device nodes for Zilog z85c30"
741	depends on SERIAL_PMACZILOG
742	help
743	  The pmac_zilog driver for the z85C30 chip on many powermacs
744	  historically used the device numbers for /dev/ttySn.  The
745	  8250 serial port driver also uses these numbers, which means
746	  the two drivers being unable to coexist; you could not use
747	  both z85C30 and 8250 type ports at the same time.
748
749	  If this option is not selected, the pmac_zilog driver will
750	  use the device numbers allocated for /dev/ttyPZn.  This allows
751	  the pmac_zilog and 8250 drivers to co-exist, but may cause
752	  existing userspace setups to break.  Programs that need to
753	  access the built-in serial ports on powermacs will need to
754	  be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
755
756	  If you enable this option, any z85c30 ports in the system will
757	  be registered as ttyS0 onwards as in the past, and you will be
758	  unable to use the 8250 module for PCMCIA or other 16C550-style
759	  UARTs.
760
761	  Say N unless you need the z85c30 ports on your (Power)Mac
762	  to appear as /dev/ttySn.
763
764config SERIAL_PMACZILOG_CONSOLE
765	bool "Console on Mac or PowerMac z85c30 serial port"
766	depends on SERIAL_PMACZILOG=y
767	select SERIAL_CORE_CONSOLE
768	help
769	  If you would like to be able to use the z85c30 serial port
770	  on your (Power)Mac as the console, you can do so by answering
771	  Y to this option.
772
773config SERIAL_CPM
774	tristate "CPM SCC/SMC serial port support"
775	depends on CPM2 || CPM1
776	select SERIAL_CORE
777	help
778	  This driver supports the SCC and SMC serial ports on Motorola
779	  embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
780
781config SERIAL_CPM_CONSOLE
782	bool "Support for console on CPM SCC/SMC serial port"
783	depends on SERIAL_CPM=y
784	select SERIAL_CORE_CONSOLE
785	help
786	  Say Y here if you wish to use a SCC or SMC CPM UART as the system
787	  console (the system console is the device which receives all kernel
788	  messages and warnings and which allows logins in single user mode).
789
790	  Even if you say Y here, the currently visible framebuffer console
791	  (/dev/tty0) will still be used as the system console by default, but
792	  you can alter that using a kernel command line option such as
793	  "console=ttyCPM0". (Try "man bootparam" or see the documentation of
794	  your boot loader (lilo or loadlin) about how to pass options to the
795	  kernel at boot time.)
796
797config SERIAL_PIC32
798	tristate "Microchip PIC32 serial support"
799	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
800	select SERIAL_CORE
801	help
802	  If you have a PIC32, this driver supports the serial ports.
803
804	  Say Y or M to use PIC32 serial ports, otherwise say N. Note that
805	  to use a serial port as a console, this must be included in kernel and
806	  not as a module.
807
808config SERIAL_PIC32_CONSOLE
809	bool "PIC32 serial console support"
810	depends on SERIAL_PIC32=y
811	select SERIAL_CORE_CONSOLE
812	help
813	  If you have a PIC32, this driver supports the putting a console on one
814	  of the serial ports.
815
816	  Say Y to use the PIC32 console, otherwise say N.
817
818config SERIAL_MPC52xx
819	tristate "Freescale MPC52xx/MPC512x family PSC serial support"
820	depends on PPC_MPC52xx || PPC_MPC512x
821	select SERIAL_CORE
822	help
823	  This driver supports MPC52xx and MPC512x PSC serial ports. If you would
824	  like to use them, you must answer Y or M to this option. Note that
825	  for use as console, it must be included in kernel and not as a
826	  module.
827
828config SERIAL_MPC52xx_CONSOLE
829	bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
830	depends on SERIAL_MPC52xx=y
831	select SERIAL_CORE_CONSOLE
832	help
833	  Select this options if you'd like to use one of the PSC serial port
834	  of the Freescale MPC52xx family as a console.
835
836config SERIAL_MPC52xx_CONSOLE_BAUD
837	int "Freescale MPC52xx/MPC512x family PSC serial port baud"
838	depends on SERIAL_MPC52xx_CONSOLE=y
839	default "9600"
840	help
841	  Select the MPC52xx console baud rate.
842	  This value is only used if the bootloader doesn't pass in the
843	  console baudrate
844
845config SERIAL_ICOM
846	tristate "IBM Multiport Serial Adapter"
847	depends on PCI
848	depends on PPC_PSERIES || COMPILE_TEST
849	select SERIAL_CORE
850	select FW_LOADER
851	help
852	  This driver is for a family of multiport serial adapters
853	  including 2 port RVX, 2 port internal modem, 4 port internal
854	  modem and a split 1 port RVX and 1 port internal modem.
855
856	  This driver can also be built as a module.  If so, the module
857	  will be called icom.
858
859config SERIAL_TXX9
860	bool "TMPTX39XX/49XX SIO support"
861	depends on HAS_TXX9_SERIAL
862	select SERIAL_CORE
863	default y
864
865config HAS_TXX9_SERIAL
866	bool
867
868config SERIAL_TXX9_NR_UARTS
869	int "Maximum number of TMPTX39XX/49XX SIO ports"
870	depends on SERIAL_TXX9
871	default "6"
872
873config SERIAL_TXX9_CONSOLE
874	bool "TMPTX39XX/49XX SIO Console support"
875	depends on SERIAL_TXX9=y
876	select SERIAL_CORE_CONSOLE
877
878config SERIAL_TXX9_STDSERIAL
879	bool "TX39XX/49XX SIO act as standard serial"
880	depends on !SERIAL_8250 && SERIAL_TXX9
881
882config SERIAL_JSM
883	tristate "Digi International NEO and Classic PCI Support"
884	depends on PCI && HAS_IOPORT
885	select SERIAL_CORE
886	help
887	  This is a driver for Digi International's Neo and Classic series
888	  of cards which provide multiple serial ports. You would need
889	  something like this to connect more than two modems to your Linux
890	  box, for instance in order to become a dial-in server. This driver
891	  supports PCI boards only.
892
893	  If you have a card like this, say Y here, otherwise say N.
894
895	  To compile this driver as a module, choose M here: the
896	  module will be called jsm.
897
898config SERIAL_MSM
899	tristate "MSM on-chip serial port support"
900	depends on ARCH_QCOM || COMPILE_TEST
901	select SERIAL_CORE
902
903config SERIAL_MSM_CONSOLE
904	bool "MSM serial console support"
905	depends on SERIAL_MSM=y
906	select SERIAL_CORE_CONSOLE
907	select SERIAL_EARLYCON
908
909config SERIAL_QCOM_GENI
910	tristate "QCOM on-chip GENI based serial port support"
911	depends on ARCH_QCOM || COMPILE_TEST
912	depends on QCOM_GENI_SE
913	select SERIAL_CORE
914
915config SERIAL_QCOM_GENI_CONSOLE
916	bool "QCOM GENI Serial Console support"
917	depends on SERIAL_QCOM_GENI
918	select SERIAL_CORE_CONSOLE
919	select SERIAL_EARLYCON
920	help
921	  Serial console driver for Qualcomm Technologies Inc's GENI based
922	  QUP hardware.
923
924config SERIAL_VT8500
925	bool "VIA VT8500 on-chip serial port support"
926	depends on ARCH_VT8500 || COMPILE_TEST
927	select SERIAL_CORE
928
929config SERIAL_VT8500_CONSOLE
930	bool "VIA VT8500 serial console support"
931	depends on SERIAL_VT8500=y
932	select SERIAL_CORE_CONSOLE
933
934config SERIAL_OMAP
935	tristate "OMAP serial port support"
936	depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
937	select SERIAL_CORE
938	help
939	  If you have a machine based on an Texas Instruments OMAP CPU you
940	  can enable its onboard serial ports by enabling this option.
941
942	  By enabling this option you take advantage of dma feature available
943	  with the omap-serial driver. DMA support can be enabled from platform
944	  data.
945
946config SERIAL_OMAP_CONSOLE
947	bool "Console on OMAP serial port"
948	depends on SERIAL_OMAP=y
949	select SERIAL_CORE_CONSOLE
950	help
951	  Select this option if you would like to use omap serial port as
952	  console.
953
954	  Even if you say Y here, the currently visible virtual console
955	  (/dev/tty0) will still be used as the system console by default, but
956	  you can alter that using a kernel command line option such as
957	  "console=ttyOx". (Try "man bootparam" or see the documentation of
958	  your boot loader about how to pass options to the kernel at
959	  boot time.)
960
961config SERIAL_SIFIVE
962	tristate "SiFive UART support"
963	depends on OF
964	default ARCH_SIFIVE || ARCH_CANAAN
965	select SERIAL_CORE
966	help
967	  Select this option if you are building a kernel for a device that
968	  contains a SiFive UART IP block.  This type of UART is present on
969	  SiFive FU540 SoCs, among others.
970
971config SERIAL_SIFIVE_CONSOLE
972	bool "Console on SiFive UART"
973	depends on SERIAL_SIFIVE=y
974	default ARCH_SIFIVE || ARCH_CANAAN
975	select SERIAL_CORE_CONSOLE
976	select SERIAL_EARLYCON
977	help
978	  Select this option if you would like to use a SiFive UART as the
979	  system console.
980
981	  Even if you say Y here, the currently visible virtual console
982	  (/dev/tty0) will still be used as the system console by default, but
983	  you can alter that using a kernel command line option such as
984	  "console=ttySIFx". (Try "man bootparam" or see the documentation of
985	  your boot loader about how to pass options to the kernel at
986	  boot time.)
987
988config SERIAL_LANTIQ
989	tristate "Lantiq serial driver"
990	depends on (LANTIQ || X86) || COMPILE_TEST
991	select SERIAL_CORE
992	help
993	  Support for UART on Lantiq and Intel SoCs.
994	  To compile this driver as a module, select M here. The
995	  module will be called lantiq.
996
997config SERIAL_LANTIQ_CONSOLE
998	bool "Console on Lantiq UART"
999	depends on SERIAL_LANTIQ=y
1000	select SERIAL_CORE_CONSOLE
1001	select SERIAL_EARLYCON
1002	help
1003	  Select this option if you would like to use a Lantiq UART as the
1004	  system console.
1005
1006config SERIAL_QE
1007	tristate "Freescale QUICC Engine serial port support"
1008	depends on QUICC_ENGINE
1009	select SERIAL_CORE
1010	select FW_LOADER
1011	help
1012	  This driver supports the QE serial ports on Freescale embedded
1013	  PowerPC that contain a QUICC Engine.
1014
1015config SERIAL_SCCNXP
1016	tristate "SCCNXP serial port support"
1017	select SERIAL_CORE
1018	help
1019	  This selects support for an advanced UART from NXP (Philips).
1020	  Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1021	  SC28L202, SCC68681 and SCC68692.
1022
1023config SERIAL_SCCNXP_CONSOLE
1024	bool "Console on SCCNXP serial port"
1025	depends on SERIAL_SCCNXP=y
1026	select SERIAL_CORE_CONSOLE
1027	help
1028	  Support for console on SCCNXP serial ports.
1029
1030config SERIAL_SC16IS7XX
1031	tristate "NXP SC16IS7xx UART support"
1032	depends on SPI_MASTER || I2C
1033	select SERIAL_CORE
1034	select SERIAL_SC16IS7XX_SPI if SPI_MASTER
1035	select SERIAL_SC16IS7XX_I2C if I2C
1036	help
1037	  Core driver for NXP SC16IS7xx UARTs.
1038	  Supported ICs are:
1039
1040	    SC16IS740
1041	    SC16IS741
1042	    SC16IS750
1043	    SC16IS752
1044	    SC16IS760
1045	    SC16IS762
1046
1047	  The driver supports both I2C and SPI interfaces.
1048
1049config SERIAL_SC16IS7XX_I2C
1050	tristate
1051	select REGMAP_I2C
1052
1053config SERIAL_SC16IS7XX_SPI
1054	tristate
1055	select REGMAP_SPI
1056
1057config SERIAL_TIMBERDALE
1058	tristate "Support for timberdale UART"
1059	select SERIAL_CORE
1060	depends on X86_32 || COMPILE_TEST
1061	help
1062	Add support for UART controller on timberdale.
1063
1064config SERIAL_BCM63XX
1065	tristate "Broadcom BCM63xx/BCM33xx UART support"
1066	select SERIAL_CORE
1067	depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1068	default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
1069	help
1070	  This enables the driver for the onchip UART core found on
1071	  the following chipsets:
1072
1073	    BCM33xx (cable modem)
1074	    BCM63xx/BCM63xxx (DSL)
1075	    BCM68xx (PON)
1076	    BCM7xxx (STB) - DOCSIS console
1077
1078config SERIAL_BCM63XX_CONSOLE
1079	bool "Console on BCM63xx serial port"
1080	depends on SERIAL_BCM63XX=y
1081	select SERIAL_CORE_CONSOLE
1082	select SERIAL_EARLYCON
1083	help
1084	  If you have enabled the serial port on the BCM63xx CPU
1085	  you can make it the console by answering Y to this option.
1086
1087config SERIAL_GRLIB_GAISLER_APBUART
1088	tristate "GRLIB APBUART serial support"
1089	depends on OF && SPARC
1090	select SERIAL_CORE
1091	help
1092	Add support for the GRLIB APBUART serial port.
1093
1094config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1095	bool "Console on GRLIB APBUART serial port"
1096	depends on SERIAL_GRLIB_GAISLER_APBUART=y
1097	select SERIAL_CORE_CONSOLE
1098	help
1099	Support for running a console on the GRLIB APBUART
1100
1101config SERIAL_ALTERA_JTAGUART
1102	tristate "Altera JTAG UART support"
1103	select SERIAL_CORE
1104	help
1105	  This driver supports the Altera JTAG UART port.
1106
1107config SERIAL_ALTERA_JTAGUART_CONSOLE
1108	bool "Altera JTAG UART console support"
1109	depends on SERIAL_ALTERA_JTAGUART=y
1110	select SERIAL_CORE_CONSOLE
1111	select SERIAL_EARLYCON
1112	help
1113	  Enable a Altera JTAG UART port to be the system console.
1114
1115config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1116	bool "Bypass output when no connection"
1117	depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1118	select SERIAL_CORE_CONSOLE
1119	help
1120	  Bypass console output and keep going even if there is no
1121	  JTAG terminal connection with the host.
1122
1123config SERIAL_ALTERA_UART
1124	tristate "Altera UART support"
1125	select SERIAL_CORE
1126	help
1127	  This driver supports the Altera softcore UART port.
1128
1129config SERIAL_ALTERA_UART_MAXPORTS
1130	int "Maximum number of Altera UART ports"
1131	depends on SERIAL_ALTERA_UART
1132	default 4
1133	help
1134	  This setting lets you define the maximum number of the Altera
1135	  UART ports. The usual default varies from board to board, and
1136	  this setting is a way of catering for that.
1137
1138config SERIAL_ALTERA_UART_BAUDRATE
1139	int "Default baudrate for Altera UART ports"
1140	depends on SERIAL_ALTERA_UART
1141	default 115200
1142	help
1143	  This setting lets you define what the default baudrate is for the
1144	  Altera UART ports. The usual default varies from board to board,
1145	  and this setting is a way of catering for that.
1146
1147config SERIAL_ALTERA_UART_CONSOLE
1148	bool "Altera UART console support"
1149	depends on SERIAL_ALTERA_UART=y
1150	select SERIAL_CORE_CONSOLE
1151	select SERIAL_EARLYCON
1152	help
1153	  Enable a Altera UART port to be the system console.
1154
1155config SERIAL_PCH_UART
1156	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1157	depends on PCI && (X86_32 || MIPS ||  COMPILE_TEST)
1158	select SERIAL_CORE
1159	help
1160	  This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1161	  which is an IOH(Input/Output Hub) for x86 embedded processor.
1162	  Enabling PCH_DMA, this PCH UART works as DMA mode.
1163
1164	  This driver also can be used for LAPIS Semiconductor IOH(Input/
1165	  Output Hub), ML7213, ML7223 and ML7831.
1166	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1167	  for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1168	  ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1169	  ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1170
1171config SERIAL_PCH_UART_CONSOLE
1172	bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1173	depends on SERIAL_PCH_UART=y
1174	select SERIAL_CORE_CONSOLE
1175	help
1176	  Say Y here if you wish to use the PCH UART as the system console
1177	  (the system  console is the device which receives all kernel messages and
1178	  warnings and which allows logins in single user mode).
1179
1180config SERIAL_MXS_AUART
1181	tristate "MXS AUART support"
1182	depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1183	select SERIAL_CORE
1184	select SERIAL_MCTRL_GPIO if GPIOLIB
1185	help
1186	  This driver supports the MXS and Alphascale ASM9260 Application
1187	  UART (AUART) port.
1188
1189config SERIAL_MXS_AUART_CONSOLE
1190	bool "MXS AUART console support"
1191	depends on SERIAL_MXS_AUART=y
1192	select SERIAL_CORE_CONSOLE
1193	help
1194	  Enable a MXS AUART port to be the system console.
1195
1196config SERIAL_XILINX_PS_UART
1197	tristate "Cadence (Xilinx Zynq) UART support"
1198	depends on OF
1199	select SERIAL_CORE
1200	help
1201	  This driver supports the Cadence UART. It is found e.g. in Xilinx
1202	  Zynq.
1203
1204config SERIAL_XILINX_PS_UART_CONSOLE
1205	bool "Cadence UART console support"
1206	depends on SERIAL_XILINX_PS_UART=y
1207	select SERIAL_CORE_CONSOLE
1208	select SERIAL_EARLYCON
1209	help
1210	  Enable a Cadence UART port to be the system console.
1211
1212config SERIAL_AR933X
1213	tristate "AR933X serial port support"
1214	depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST)
1215	select SERIAL_CORE
1216	select SERIAL_MCTRL_GPIO if GPIOLIB
1217	help
1218	  If you have an Atheros AR933X SOC based board and want to use the
1219	  built-in UART of the SoC, say Y to this option.
1220
1221	  To compile this driver as a module, choose M here: the
1222	  module will be called ar933x_uart.
1223
1224config SERIAL_AR933X_CONSOLE
1225	bool "Console on AR933X serial port"
1226	depends on SERIAL_AR933X=y
1227	select SERIAL_CORE_CONSOLE
1228	help
1229	  Enable a built-in UART port of the AR933X to be the system console.
1230
1231config SERIAL_AR933X_NR_UARTS
1232	int "Maximum number of AR933X serial ports"
1233	depends on SERIAL_AR933X
1234	default "2"
1235	help
1236	  Set this to the number of serial ports you want the driver
1237	  to support.
1238
1239config SERIAL_MPS2_UART_CONSOLE
1240	bool "MPS2 UART console support"
1241	depends on SERIAL_MPS2_UART
1242	select SERIAL_CORE_CONSOLE
1243	select SERIAL_EARLYCON
1244
1245config SERIAL_MPS2_UART
1246	bool "MPS2 UART port"
1247	depends on ARCH_MPS2 || COMPILE_TEST
1248	select SERIAL_CORE
1249	help
1250	  This driver support the UART ports on ARM MPS2.
1251
1252config SERIAL_ARC
1253	tristate "ARC UART driver support"
1254	select SERIAL_CORE
1255	help
1256	  Driver for on-chip UART for ARC(Synopsys) for the legacy
1257	  FPGA Boards (ML50x/ARCAngel4)
1258
1259config SERIAL_ARC_CONSOLE
1260	bool "Console on ARC UART"
1261	depends on SERIAL_ARC=y
1262	select SERIAL_CORE_CONSOLE
1263	select SERIAL_EARLYCON
1264	help
1265	  Enable system Console on ARC UART
1266
1267config SERIAL_ARC_NR_PORTS
1268	int "Number of ARC UART ports"
1269	depends on SERIAL_ARC
1270	range 1 3
1271	default "1"
1272	help
1273	  Set this to the number of serial ports you want the driver
1274	  to support.
1275
1276config SERIAL_RP2
1277	tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1278	depends on PCI
1279	select SERIAL_CORE
1280	help
1281	  This driver supports the Comtrol RocketPort EXPRESS and
1282	  RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1283	  These adapters use a "RocketPort 2" ASIC that is not compatible
1284	  with the original RocketPort driver (CONFIG_ROCKETPORT).
1285
1286	  To compile this driver as a module, choose M here: the
1287	  module will be called rp2.
1288
1289	  If you want to compile this driver into the kernel, say Y here.  If
1290	  you don't have a suitable RocketPort card installed, say N.
1291
1292config SERIAL_RP2_NR_UARTS
1293	int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1294	depends on SERIAL_RP2
1295	default "32"
1296	help
1297	  If multiple cards are present, the default limit of 32 ports may
1298	  need to be increased.
1299
1300config SERIAL_FSL_LPUART
1301	tristate "Freescale lpuart serial port support"
1302	depends on HAS_DMA
1303	select SERIAL_CORE
1304	help
1305	  Support for the on-chip lpuart on some Freescale SOCs.
1306
1307config SERIAL_FSL_LPUART_CONSOLE
1308	bool "Console on Freescale lpuart serial port"
1309	depends on SERIAL_FSL_LPUART=y
1310	select SERIAL_CORE_CONSOLE
1311	select SERIAL_EARLYCON
1312	help
1313	  If you have enabled the lpuart serial port on the Freescale SoCs,
1314	  you can make it the console by answering Y to this option.
1315
1316config SERIAL_FSL_LINFLEXUART
1317	tristate "Freescale LINFlexD UART serial port support"
1318	depends on PRINTK
1319	select SERIAL_CORE
1320	help
1321	  Support for the on-chip LINFlexD UART on some Freescale SOCs.
1322
1323config SERIAL_FSL_LINFLEXUART_CONSOLE
1324	bool "Console on Freescale LINFlexD UART serial port"
1325	depends on SERIAL_FSL_LINFLEXUART=y
1326	select SERIAL_CORE_CONSOLE
1327	select SERIAL_EARLYCON
1328	help
1329	  If you have enabled the LINFlexD UART serial port on the Freescale
1330	  SoCs, you can make it the console by answering Y to this option.
1331
1332config SERIAL_CONEXANT_DIGICOLOR
1333	tristate "Conexant Digicolor CX92xxx USART serial port support"
1334	depends on OF
1335	select SERIAL_CORE
1336	help
1337	  Support for the on-chip USART on Conexant Digicolor SoCs.
1338
1339config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1340	bool "Console on Conexant Digicolor serial port"
1341	depends on SERIAL_CONEXANT_DIGICOLOR=y
1342	select SERIAL_CORE_CONSOLE
1343	help
1344	  If you have enabled the USART serial port on Conexant Digicolor
1345	  SoCs, you can make it the console by answering Y to this option.
1346
1347config SERIAL_ST_ASC
1348	tristate "ST ASC serial port support"
1349	select SERIAL_CORE
1350	depends on ARM || COMPILE_TEST
1351	help
1352	  This driver is for the on-chip Asynchronous Serial Controller on
1353	  STMicroelectronics STi SoCs.
1354	  ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1355	  It support all industry standard baud rates.
1356
1357	  If unsure, say N.
1358
1359config SERIAL_ST_ASC_CONSOLE
1360	bool "Support for console on ST ASC"
1361	depends on SERIAL_ST_ASC=y
1362	select SERIAL_CORE_CONSOLE
1363
1364config SERIAL_MEN_Z135
1365	tristate "MEN 16z135 Support"
1366	select SERIAL_CORE
1367	depends on MCB
1368	help
1369	  Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1370	  on a MCB carrier.
1371
1372	  This driver can also be build as a module. If so, the module will be called
1373	  men_z135_uart.ko
1374
1375config SERIAL_SPRD
1376	tristate "Support for Spreadtrum serial"
1377	select SERIAL_CORE
1378	depends on COMMON_CLK
1379	help
1380	  This enables the driver for the Spreadtrum's serial.
1381
1382config SERIAL_SPRD_CONSOLE
1383	bool "Spreadtrum UART console support"
1384	depends on SERIAL_SPRD=y
1385	select SERIAL_CORE_CONSOLE
1386	select SERIAL_EARLYCON
1387	help
1388	  Support for early debug console using Spreadtrum's serial. This enables
1389	  the console before standard serial driver is probed. This is enabled
1390	  with "earlycon" on the kernel command line. The console is
1391	  enabled when early_param is processed.
1392
1393config SERIAL_STM32
1394	tristate "STMicroelectronics STM32 serial port support"
1395	select SERIAL_CORE
1396	depends on ARCH_STM32 || COMPILE_TEST
1397	select SERIAL_MCTRL_GPIO if GPIOLIB
1398	help
1399	  This driver is for the on-chip Serial Controller on
1400	  STMicroelectronics STM32 MCUs.
1401	  USART supports Rx & Tx functionality.
1402	  It support all industry standard baud rates.
1403
1404	  If unsure, say N.
1405
1406config SERIAL_STM32_CONSOLE
1407	bool "Support for console on STM32"
1408	depends on SERIAL_STM32=y
1409	select SERIAL_CORE_CONSOLE
1410	select SERIAL_EARLYCON
1411
1412config SERIAL_MVEBU_UART
1413	bool "Marvell EBU serial port support"
1414	depends on ARCH_MVEBU || COMPILE_TEST
1415	depends on COMMON_CLK
1416	select SERIAL_CORE
1417	help
1418	  This driver is for Marvell EBU SoC's UART. If you have a machine
1419	  based on the Armada-3700 SoC and wish to use the on-board serial
1420	  port,
1421	  say 'Y' here.
1422	  Otherwise, say 'N'.
1423
1424config SERIAL_MVEBU_CONSOLE
1425	bool "Console on Marvell EBU serial port"
1426	depends on SERIAL_MVEBU_UART
1427	select SERIAL_CORE_CONSOLE
1428	select SERIAL_EARLYCON
1429	default y
1430	help
1431	  Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1432	  (the system console is the device which receives all kernel messages
1433	  and warnings and which allows logins in single user mode)
1434	  Otherwise, say 'N'.
1435
1436config SERIAL_OWL
1437	tristate "Actions Semi Owl serial port support"
1438	depends on ARCH_ACTIONS || COMPILE_TEST
1439	select SERIAL_CORE
1440	help
1441	  This driver is for Actions Semiconductor S500/S900 SoC's UART.
1442	  Say 'Y' here if you wish to use the on-board serial port.
1443	  Otherwise, say 'N'.
1444
1445config SERIAL_OWL_CONSOLE
1446	bool "Console on Actions Semi Owl serial port"
1447	depends on SERIAL_OWL=y
1448	select SERIAL_CORE_CONSOLE
1449	select SERIAL_EARLYCON
1450	default y
1451	help
1452	  Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1453	  as the system console.
1454
1455config SERIAL_RDA
1456	bool "RDA Micro serial port support"
1457	depends on ARCH_RDA || COMPILE_TEST
1458	select SERIAL_CORE
1459	help
1460	  This driver is for RDA8810PL SoC's UART.
1461	  Say 'Y' here if you wish to use the on-board serial port.
1462	  Otherwise, say 'N'.
1463
1464config SERIAL_RDA_CONSOLE
1465	bool "Console on RDA Micro serial port"
1466	depends on SERIAL_RDA=y
1467	select SERIAL_CORE_CONSOLE
1468	select SERIAL_EARLYCON
1469	default y
1470	help
1471	  Say 'Y' here if you wish to use the RDA8810PL UART as the system
1472	  console. Only earlycon is implemented currently.
1473
1474config SERIAL_MILBEAUT_USIO
1475	tristate "Milbeaut USIO/UART serial port support"
1476	depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1477	default ARCH_MILBEAUT
1478	select SERIAL_CORE
1479	help
1480	  This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1481
1482config SERIAL_MILBEAUT_USIO_PORTS
1483	int "Maximum number of CSIO/UART ports (1-8)"
1484	range 1 8
1485	depends on SERIAL_MILBEAUT_USIO
1486	default "4"
1487
1488config SERIAL_MILBEAUT_USIO_CONSOLE
1489	bool "Support for console on MILBEAUT USIO/UART serial port"
1490	depends on SERIAL_MILBEAUT_USIO=y
1491	default y
1492	select SERIAL_CORE_CONSOLE
1493	select SERIAL_EARLYCON
1494	help
1495	  Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1496	  SoCs as the system console (the system console is the device which
1497	  receives all kernel messages and warnings and which allows logins in
1498	  single user mode).
1499
1500config SERIAL_LITEUART
1501	tristate "LiteUART serial port support"
1502	depends on HAS_IOMEM
1503	depends on OF
1504	depends on LITEX || COMPILE_TEST
1505	select SERIAL_CORE
1506	help
1507	  This driver is for the FPGA-based LiteUART serial controller from LiteX
1508	  SoC builder.
1509
1510	  Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1511	  Otherwise, say 'N'.
1512
1513config SERIAL_LITEUART_MAX_PORTS
1514	int "Maximum number of LiteUART ports"
1515	depends on SERIAL_LITEUART
1516	default "1"
1517	help
1518	  Set this to the maximum number of serial ports you want the driver
1519	  to support.
1520
1521config SERIAL_LITEUART_CONSOLE
1522	bool "LiteUART serial port console support"
1523	depends on SERIAL_LITEUART=y
1524	select SERIAL_CORE_CONSOLE
1525	select SERIAL_EARLYCON
1526	help
1527	  Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1528	  controller from LiteX SoC builder as the system console
1529	  (the system console is the device which receives all kernel messages
1530	  and warnings and which allows logins in single user mode).
1531	  Otherwise, say 'N'.
1532
1533config SERIAL_SUNPLUS
1534	tristate "Sunplus UART support"
1535	depends on ARCH_SUNPLUS || COMPILE_TEST
1536	select SERIAL_CORE
1537	help
1538	  Select this option if you would like to use Sunplus serial port on
1539	  Sunplus SoC SP7021.
1540	  If you enable this option, Sunplus serial ports in the system will
1541	  be registered as ttySUPx.
1542	  This driver can also be built as a module. If so, the module will be
1543	  called sunplus-uart.
1544
1545config SERIAL_SUNPLUS_CONSOLE
1546	bool "Console on Sunplus UART"
1547	depends on SERIAL_SUNPLUS
1548	select SERIAL_CORE_CONSOLE
1549	select SERIAL_EARLYCON
1550	help
1551	  Select this option if you would like to use a Sunplus UART as the
1552	  system console.
1553	  Even if you say Y here, the currently visible virtual console
1554	  (/dev/tty0) will still be used as the system console by default, but
1555	  you can alter that using a kernel command line option such as
1556	  "console=ttySUPx".
1557
1558config SERIAL_NUVOTON_MA35D1
1559	tristate "Nuvoton MA35D1 family UART support"
1560	depends on ARCH_MA35 || COMPILE_TEST
1561	select SERIAL_CORE
1562	help
1563	  This driver supports Nuvoton MA35D1 family UART ports. If you would
1564	  like to use them, you must answer Y or M to this option. Note that
1565	  for use as console, it must be included in kernel and not as a
1566	  module. If you enable this option, Ma35D1 serial ports in the system
1567	  will be registered as ttyNVTx.
1568
1569config SERIAL_NUVOTON_MA35D1_CONSOLE
1570	bool "Console on a Nuvotn MA35D1 family UART port"
1571	depends on SERIAL_NUVOTON_MA35D1=y
1572	select SERIAL_CORE_CONSOLE
1573	help
1574	  Select this options if you'd like to use the UART port0 of the
1575	  Nuvoton MA35D1 family as a console.
1576	  Even if you say Y here, the currently visible virtual console
1577	  (/dev/tty0) will still be used as the system console by default,
1578	  but you can alter that using a kernel command line option such as
1579	  "console=ttyNVTx".
1580
1581config SERIAL_ESP32
1582	tristate "Espressif ESP32 UART support"
1583	depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1584	select SERIAL_CORE
1585	select SERIAL_CORE_CONSOLE
1586	select SERIAL_EARLYCON
1587	help
1588	  Driver for the UART controllers of the Espressif ESP32xx SoCs.
1589	  When earlycon option is enabled the following kernel command line
1590	  snippets may be used:
1591	    earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000
1592	    earlycon=esp32uart,mmio32,0x3ff40000,115200n8
1593
1594config SERIAL_ESP32_ACM
1595	tristate "Espressif ESP32 USB ACM gadget support"
1596	depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
1597	select SERIAL_CORE
1598	select SERIAL_CORE_CONSOLE
1599	select SERIAL_EARLYCON
1600	help
1601	  Driver for the CDC ACM gadget controller of the Espressif ESP32S3
1602	  SoCs that share separate USB controller with the JTAG adapter.
1603	  When earlycon option is enabled the following kernel command line
1604	  snippet may be used:
1605	    earlycon=esp32s3acm,mmio32,0x60038000
1606
1607endmenu
1608
1609config SERIAL_MCTRL_GPIO
1610	tristate
1611