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_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 COMMON_CLK
131	depends on ARCH_AT91 || 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_KGDB_NMI
183	bool "Serial console over KGDB NMI debugger port"
184	depends on KGDB_SERIAL_CONSOLE
185	help
186	  This special driver allows you to temporary use NMI debugger port
187	  as a normal console (assuming that the port is attached to KGDB).
188
189	  Unlike KDB's disable_nmi command, with this driver you are always
190	  able to go back to the debugger using KGDB escape sequence ($3#33).
191	  This is because this console driver processes the input in NMI
192	  context, and thus is able to intercept the magic sequence.
193
194	  Note that since the console interprets input and uses polling
195	  communication methods, for things like PPP you still must fully
196	  detach debugger port from the KGDB NMI (i.e. disable_nmi), and
197	  use raw console.
198
199	  If unsure, say N.
200
201config SERIAL_MESON
202	tristate "Meson serial port support"
203	depends on ARCH_MESON || COMPILE_TEST
204	select SERIAL_CORE
205	help
206	  This enables the driver for the on-chip UARTs of the Amlogic
207	  MesonX processors.
208
209config SERIAL_MESON_CONSOLE
210	bool "Support for console on meson"
211	depends on SERIAL_MESON
212	select SERIAL_CORE_CONSOLE
213	select SERIAL_EARLYCON
214	help
215	  Say Y here if you wish to use a Amlogic MesonX UART as the
216	  system console (the system console is the device which
217	  receives all kernel messages and warnings and which allows
218	  logins in single user mode) as /dev/ttyAMLx.
219
220config SERIAL_CLPS711X
221	tristate "CLPS711X serial port support"
222	depends on ARCH_CLPS711X || COMPILE_TEST
223	select SERIAL_CORE
224	select SERIAL_MCTRL_GPIO if GPIOLIB
225	help
226	  This enables the driver for the on-chip UARTs of the Cirrus
227	  Logic EP711x/EP721x/EP731x processors.
228
229config SERIAL_CLPS711X_CONSOLE
230	bool "Support for console on CLPS711X serial port"
231	depends on SERIAL_CLPS711X=y
232	select SERIAL_CORE_CONSOLE
233	help
234	  Even if you say Y here, the currently visible virtual console
235	  (/dev/tty0) will still be used as the system console by default, but
236	  you can alter that using a kernel command line option such as
237	  "console=ttyCL1".
238
239config SERIAL_SAMSUNG
240	tristate "Samsung SoC serial support"
241	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
242	select SERIAL_CORE
243	help
244	  Support for the on-chip UARTs on the Samsung
245	  S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
246	  /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
247	  these ports, depending on how the serial port pins are configured.
248
249	  Choose Y/M here only if you build for such SoC.
250
251config SERIAL_SAMSUNG_UARTS_4
252	bool
253	depends on SERIAL_SAMSUNG
254	default y
255	help
256	  Internal node for the common case of 4 Samsung compatible UARTs
257
258config SERIAL_SAMSUNG_UARTS
259	int
260	depends on SERIAL_SAMSUNG
261	default 4
262	help
263	  Select the number of available UART ports for the Samsung S3C
264	  serial driver
265
266config SERIAL_SAMSUNG_CONSOLE
267	bool "Support for console on Samsung SoC serial port"
268	depends on SERIAL_SAMSUNG
269	select SERIAL_CORE_CONSOLE
270	select SERIAL_EARLYCON
271	help
272	  Allow selection of the S3C24XX on-board serial ports for use as
273	  an virtual console.
274
275	  Even if you say Y here, the currently visible virtual console
276	  (/dev/tty0) will still be used as the system console by default, but
277	  you can alter that using a kernel command line option such as
278	  "console=ttySACx". (Try "man bootparam" or see the documentation of
279	  your boot loader about how to pass options to the kernel at
280	  boot time.)
281
282config SERIAL_TEGRA
283	tristate "NVIDIA Tegra20/30 SoC serial controller"
284	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
285	select SERIAL_CORE
286	help
287	  Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
288	  providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
289	  provide all of these ports, depending on how the serial port
290	  are enabled). This driver uses the APB DMA to achieve higher baudrate
291	  and better performance.
292
293config SERIAL_TEGRA_TCU
294	tristate "NVIDIA Tegra Combined UART"
295	depends on MAILBOX
296	depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
297	select SERIAL_CORE
298	help
299	  Support for the mailbox-based TCU (Tegra Combined UART) serial port.
300	  TCU is a virtual serial port that allows multiplexing multiple data
301	  streams into a single hardware serial port.
302
303config SERIAL_TEGRA_TCU_CONSOLE
304	bool "Support for console on a Tegra TCU serial port"
305	depends on SERIAL_TEGRA_TCU=y
306	select SERIAL_CORE_CONSOLE
307	default y
308	help
309	  If you say Y here, it will be possible to use a the Tegra TCU as the
310	  system console (the system console is the device which receives all
311	  kernel messages and warnings and which allows logins in single user
312	  mode).
313
314	  If unsure, say Y.
315
316config SERIAL_MAX3100
317	tristate "MAX3100 support"
318	depends on SPI
319	select SERIAL_CORE
320	help
321	  MAX3100 chip support
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/arm/sa1100/serial_uart.rst> for further
461	  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
543config SERIAL_SUNCORE
544	bool
545	depends on SPARC
546	select SERIAL_CORE
547	select SERIAL_CORE_CONSOLE
548	default y
549
550config SERIAL_SUNZILOG
551	tristate "Sun Zilog8530 serial support"
552	depends on SPARC
553	help
554	  This driver supports the Zilog8530 serial ports found on many Sparc
555	  systems.  Say Y or M if you want to be able to these serial ports.
556
557config SERIAL_SUNZILOG_CONSOLE
558	bool "Console on Sun Zilog8530 serial port"
559	depends on SERIAL_SUNZILOG=y
560	help
561	  If you would like to be able to use the Zilog8530 serial port
562	  on your Sparc system as the console, you can do so by answering
563	  Y to this option.
564
565config SERIAL_SUNSU
566	tristate "Sun SU serial support"
567	depends on SPARC && PCI
568	help
569	  This driver supports the 8250 serial ports that run the keyboard and
570	  mouse on (PCI) UltraSPARC systems.  Say Y or M if you want to be able
571	  to these serial ports.
572
573config SERIAL_SUNSU_CONSOLE
574	bool "Console on Sun SU serial port"
575	depends on SERIAL_SUNSU=y
576	help
577	  If you would like to be able to use the SU serial port
578	  on your Sparc system as the console, you can do so by answering
579	  Y to this option.
580
581config SERIAL_MUX
582	tristate "Serial MUX support"
583	depends on GSC
584	select SERIAL_CORE
585	default y
586	help
587	  Saying Y here will enable the hardware MUX serial driver for
588	  the Nova, K class systems and D class with a 'remote control card'.
589	  The hardware MUX is not 8250/16550 compatible therefore the
590	  /dev/ttyB0 device is shared between the Serial MUX and the PDC
591	  software console. The following steps need to be completed to use
592	  the Serial MUX:
593
594	    1. create the device entry (mknod /dev/ttyB0 c 11 0)
595	    2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
596	    3. Add device ttyB0 to /etc/securetty (if you want to log on as
597		 root on this console.)
598	    4. Change the kernel command console parameter to: console=ttyB0
599
600config SERIAL_MUX_CONSOLE
601	bool "Support for console on serial MUX"
602	depends on SERIAL_MUX=y
603	select SERIAL_CORE_CONSOLE
604	default y
605
606config SERIAL_SUNSAB
607	tristate "Sun Siemens SAB82532 serial support"
608	depends on SPARC && PCI
609	help
610	  This driver supports the Siemens SAB82532 DUSCC serial ports on newer
611	  (PCI) UltraSPARC systems.  Say Y or M if you want to be able to these
612	  serial ports.
613
614config SERIAL_SUNSAB_CONSOLE
615	bool "Console on Sun Siemens SAB82532 serial port"
616	depends on SERIAL_SUNSAB=y
617	help
618	  If you would like to be able to use the SAB82532 serial port
619	  on your Sparc system as the console, you can do so by answering
620	  Y to this option.
621
622config SERIAL_SUNHV
623	bool "Sun4v Hypervisor Console support"
624	depends on SPARC64
625	help
626	  This driver supports the console device found on SUN4V Sparc
627	  systems.  Say Y if you want to be able to use this device.
628
629config SERIAL_IP22_ZILOG
630	tristate "SGI Zilog8530 serial support"
631	depends on SGI_HAS_ZILOG
632	select SERIAL_CORE
633	help
634	  This driver supports the Zilog8530 serial ports found on SGI
635	  systems.  Say Y or M if you want to be able to these serial ports.
636
637config SERIAL_IP22_ZILOG_CONSOLE
638	bool "Console on SGI Zilog8530 serial port"
639	depends on SERIAL_IP22_ZILOG=y
640	select SERIAL_CORE_CONSOLE
641
642config SERIAL_SH_SCI
643	tristate "SuperH SCI(F) serial port support"
644	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
645	select SERIAL_CORE
646	select SERIAL_MCTRL_GPIO if GPIOLIB
647
648config SERIAL_SH_SCI_NR_UARTS
649	int "Maximum number of SCI(F) serial ports" if EXPERT
650	range 1 64 if 64BIT
651	range 1 32 if !64BIT
652	depends on SERIAL_SH_SCI
653	default "10" if SUPERH
654	default "18" if ARCH_RENESAS
655	default "2"
656
657config SERIAL_SH_SCI_CONSOLE
658	bool "Support for console on SuperH SCI(F)" if EXPERT
659	depends on SERIAL_SH_SCI=y
660	select SERIAL_CORE_CONSOLE
661	default y
662
663config SERIAL_SH_SCI_EARLYCON
664	bool "Support for early console on SuperH SCI(F)" if EXPERT
665	depends on SERIAL_SH_SCI=y
666	select SERIAL_CORE_CONSOLE
667	select SERIAL_EARLYCON
668	default ARCH_RENESAS
669
670config SERIAL_SH_SCI_DMA
671	bool "DMA support" if EXPERT
672	depends on SERIAL_SH_SCI && DMA_ENGINE
673	default ARCH_RENESAS
674
675config SERIAL_HS_LPC32XX
676	tristate "LPC32XX high speed serial port support"
677	depends on ARCH_LPC32XX || COMPILE_TEST
678	depends on OF
679	select SERIAL_CORE
680	help
681	  Support for the LPC32XX high speed serial ports (up to 900kbps).
682	  Those are UARTs completely different from the Standard UARTs on the
683	  LPC32XX SoC.
684	  Choose M or Y here to build this driver.
685
686config SERIAL_HS_LPC32XX_CONSOLE
687	bool "Enable LPC32XX high speed UART serial console"
688	depends on SERIAL_HS_LPC32XX=y
689	select SERIAL_CORE_CONSOLE
690	help
691	  If you would like to be able to use one of the high speed serial
692	  ports on the LPC32XX as the console, you can do so by answering
693	  Y to this option.
694
695config SERIAL_CORE
696	tristate
697
698config SERIAL_CORE_CONSOLE
699	bool
700
701config CONSOLE_POLL
702	bool
703
704config SERIAL_MCF
705	bool "Coldfire serial support"
706	depends on COLDFIRE
707	select SERIAL_CORE
708	help
709	  This serial driver supports the Freescale Coldfire serial ports.
710
711config SERIAL_MCF_BAUDRATE
712	int "Default baudrate for Coldfire serial ports"
713	depends on SERIAL_MCF
714	default 19200
715	help
716	  This setting lets you define what the default baudrate is for the
717	  ColdFire serial ports. The usual default varies from board to board,
718	  and this setting is a way of catering for that.
719
720config SERIAL_MCF_CONSOLE
721	bool "Coldfire serial console support"
722	depends on SERIAL_MCF
723	select SERIAL_CORE_CONSOLE
724	help
725	  Enable a ColdFire internal serial port to be the system console.
726
727config SERIAL_PMACZILOG
728	tristate "Mac or PowerMac z85c30 ESCC support"
729	depends on (M68K && MAC) || PPC_PMAC
730	select SERIAL_CORE
731	help
732	  This driver supports the Zilog z85C30 serial ports found on
733	  (Power)Mac machines.
734	  Say Y or M if you want to be able to these serial ports.
735
736config SERIAL_PMACZILOG_TTYS
737	bool "Use ttySn device nodes for Zilog z85c30"
738	depends on SERIAL_PMACZILOG
739	help
740	  The pmac_zilog driver for the z85C30 chip on many powermacs
741	  historically used the device numbers for /dev/ttySn.  The
742	  8250 serial port driver also uses these numbers, which means
743	  the two drivers being unable to coexist; you could not use
744	  both z85C30 and 8250 type ports at the same time.
745
746	  If this option is not selected, the pmac_zilog driver will
747	  use the device numbers allocated for /dev/ttyPZn.  This allows
748	  the pmac_zilog and 8250 drivers to co-exist, but may cause
749	  existing userspace setups to break.  Programs that need to
750	  access the built-in serial ports on powermacs will need to
751	  be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
752
753	  If you enable this option, any z85c30 ports in the system will
754	  be registered as ttyS0 onwards as in the past, and you will be
755	  unable to use the 8250 module for PCMCIA or other 16C550-style
756	  UARTs.
757
758	  Say N unless you need the z85c30 ports on your (Power)Mac
759	  to appear as /dev/ttySn.
760
761config SERIAL_PMACZILOG_CONSOLE
762	bool "Console on Mac or PowerMac z85c30 serial port"
763	depends on SERIAL_PMACZILOG=y
764	select SERIAL_CORE_CONSOLE
765	help
766	  If you would like to be able to use the z85c30 serial port
767	  on your (Power)Mac as the console, you can do so by answering
768	  Y to this option.
769
770config SERIAL_CPM
771	tristate "CPM SCC/SMC serial port support"
772	depends on CPM2 || CPM1 || (PPC32 && COMPILE_TEST)
773	select SERIAL_CORE
774	help
775	  This driver supports the SCC and SMC serial ports on Motorola
776	  embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
777
778config SERIAL_CPM_CONSOLE
779	bool "Support for console on CPM SCC/SMC serial port"
780	depends on SERIAL_CPM=y
781	select SERIAL_CORE_CONSOLE
782	help
783	  Say Y here if you wish to use a SCC or SMC CPM UART as the system
784	  console (the system console is the device which receives all kernel
785	  messages and warnings and which allows logins in single user mode).
786
787	  Even if you say Y here, the currently visible framebuffer console
788	  (/dev/tty0) will still be used as the system console by default, but
789	  you can alter that using a kernel command line option such as
790	  "console=ttyCPM0". (Try "man bootparam" or see the documentation of
791	  your boot loader (lilo or loadlin) about how to pass options to the
792	  kernel at boot time.)
793
794config SERIAL_PIC32
795	tristate "Microchip PIC32 serial support"
796	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
797	select SERIAL_CORE
798	help
799	  If you have a PIC32, this driver supports the serial ports.
800
801	  Say Y or M to use PIC32 serial ports, otherwise say N. Note that
802	  to use a serial port as a console, this must be included in kernel and
803	  not as a module.
804
805config SERIAL_PIC32_CONSOLE
806	bool "PIC32 serial console support"
807	depends on SERIAL_PIC32=y
808	select SERIAL_CORE_CONSOLE
809	help
810	  If you have a PIC32, this driver supports the putting a console on one
811	  of the serial ports.
812
813	  Say Y to use the PIC32 console, otherwise say N.
814
815config SERIAL_MPC52xx
816	tristate "Freescale MPC52xx/MPC512x family PSC serial support"
817	depends on PPC_MPC52xx || PPC_MPC512x
818	select SERIAL_CORE
819	help
820	  This driver supports MPC52xx and MPC512x PSC serial ports. If you would
821	  like to use them, you must answer Y or M to this option. Note that
822	  for use as console, it must be included in kernel and not as a
823	  module.
824
825config SERIAL_MPC52xx_CONSOLE
826	bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
827	depends on SERIAL_MPC52xx=y
828	select SERIAL_CORE_CONSOLE
829	help
830	  Select this options if you'd like to use one of the PSC serial port
831	  of the Freescale MPC52xx family as a console.
832
833config SERIAL_MPC52xx_CONSOLE_BAUD
834	int "Freescale MPC52xx/MPC512x family PSC serial port baud"
835	depends on SERIAL_MPC52xx_CONSOLE=y
836	default "9600"
837	help
838	  Select the MPC52xx console baud rate.
839	  This value is only used if the bootloader doesn't pass in the
840	  console baudrate
841
842config SERIAL_ICOM
843	tristate "IBM Multiport Serial Adapter"
844	depends on PCI
845	depends on PPC_PSERIES || COMPILE_TEST
846	select SERIAL_CORE
847	select FW_LOADER
848	help
849	  This driver is for a family of multiport serial adapters
850	  including 2 port RVX, 2 port internal modem, 4 port internal
851	  modem and a split 1 port RVX and 1 port internal modem.
852
853	  This driver can also be built as a module.  If so, the module
854	  will be called icom.
855
856config SERIAL_TXX9
857	bool "TMPTX39XX/49XX SIO support"
858	depends on HAS_TXX9_SERIAL
859	select SERIAL_CORE
860	default y
861
862config HAS_TXX9_SERIAL
863	bool
864
865config SERIAL_TXX9_NR_UARTS
866	int "Maximum number of TMPTX39XX/49XX SIO ports"
867	depends on SERIAL_TXX9
868	default "6"
869
870config SERIAL_TXX9_CONSOLE
871	bool "TMPTX39XX/49XX SIO Console support"
872	depends on SERIAL_TXX9=y
873	select SERIAL_CORE_CONSOLE
874
875config SERIAL_TXX9_STDSERIAL
876	bool "TX39XX/49XX SIO act as standard serial"
877	depends on !SERIAL_8250 && SERIAL_TXX9
878
879config SERIAL_JSM
880	tristate "Digi International NEO and Classic PCI Support"
881	depends on PCI
882	select SERIAL_CORE
883	help
884	  This is a driver for Digi International's Neo and Classic series
885	  of cards which provide multiple serial ports. You would need
886	  something like this to connect more than two modems to your Linux
887	  box, for instance in order to become a dial-in server. This driver
888	  supports PCI boards only.
889
890	  If you have a card like this, say Y here, otherwise say N.
891
892	  To compile this driver as a module, choose M here: the
893	  module will be called jsm.
894
895config SERIAL_MSM
896	tristate "MSM on-chip serial port support"
897	depends on ARCH_QCOM || COMPILE_TEST
898	select SERIAL_CORE
899
900config SERIAL_MSM_CONSOLE
901	bool "MSM serial console support"
902	depends on SERIAL_MSM=y
903	select SERIAL_CORE_CONSOLE
904	select SERIAL_EARLYCON
905
906config SERIAL_QCOM_GENI
907	tristate "QCOM on-chip GENI based serial port support"
908	depends on ARCH_QCOM || COMPILE_TEST
909	depends on QCOM_GENI_SE
910	select SERIAL_CORE
911
912config SERIAL_QCOM_GENI_CONSOLE
913	bool "QCOM GENI Serial Console support"
914	depends on SERIAL_QCOM_GENI
915	select SERIAL_CORE_CONSOLE
916	select SERIAL_EARLYCON
917	help
918	  Serial console driver for Qualcomm Technologies Inc's GENI based
919	  QUP hardware.
920
921config SERIAL_VT8500
922	bool "VIA VT8500 on-chip serial port support"
923	depends on ARCH_VT8500 || COMPILE_TEST
924	select SERIAL_CORE
925
926config SERIAL_VT8500_CONSOLE
927	bool "VIA VT8500 serial console support"
928	depends on SERIAL_VT8500=y
929	select SERIAL_CORE_CONSOLE
930
931config SERIAL_OMAP
932	tristate "OMAP serial port support"
933	depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
934	select SERIAL_CORE
935	help
936	  If you have a machine based on an Texas Instruments OMAP CPU you
937	  can enable its onboard serial ports by enabling this option.
938
939	  By enabling this option you take advantage of dma feature available
940	  with the omap-serial driver. DMA support can be enabled from platform
941	  data.
942
943config SERIAL_OMAP_CONSOLE
944	bool "Console on OMAP serial port"
945	depends on SERIAL_OMAP=y
946	select SERIAL_CORE_CONSOLE
947	help
948	  Select this option if you would like to use omap serial port as
949	  console.
950
951	  Even if you say Y here, the currently visible virtual console
952	  (/dev/tty0) will still be used as the system console by default, but
953	  you can alter that using a kernel command line option such as
954	  "console=ttyOx". (Try "man bootparam" or see the documentation of
955	  your boot loader about how to pass options to the kernel at
956	  boot time.)
957
958config SERIAL_SIFIVE
959	tristate "SiFive UART support"
960	depends on OF
961	default SOC_SIFIVE || SOC_CANAAN
962	select SERIAL_CORE
963	help
964	  Select this option if you are building a kernel for a device that
965	  contains a SiFive UART IP block.  This type of UART is present on
966	  SiFive FU540 SoCs, among others.
967
968config SERIAL_SIFIVE_CONSOLE
969	bool "Console on SiFive UART"
970	depends on SERIAL_SIFIVE=y
971	default SOC_SIFIVE || SOC_CANAAN
972	select SERIAL_CORE_CONSOLE
973	select SERIAL_EARLYCON
974	help
975	  Select this option if you would like to use a SiFive UART as the
976	  system console.
977
978	  Even if you say Y here, the currently visible virtual console
979	  (/dev/tty0) will still be used as the system console by default, but
980	  you can alter that using a kernel command line option such as
981	  "console=ttySIFx". (Try "man bootparam" or see the documentation of
982	  your boot loader about how to pass options to the kernel at
983	  boot time.)
984
985config SERIAL_LANTIQ
986	tristate "Lantiq serial driver"
987	depends on (LANTIQ || X86) || COMPILE_TEST
988	select SERIAL_CORE
989	help
990	  Support for UART on Lantiq and Intel SoCs.
991	  To compile this driver as a module, select M here. The
992	  module will be called lantiq.
993
994config SERIAL_LANTIQ_CONSOLE
995	bool "Console on Lantiq UART"
996	depends on SERIAL_LANTIQ=y
997	select SERIAL_CORE_CONSOLE
998	select SERIAL_EARLYCON
999	help
1000	  Select this option if you would like to use a Lantiq UART as the
1001	  system console.
1002
1003config SERIAL_QE
1004	tristate "Freescale QUICC Engine serial port support"
1005	depends on QUICC_ENGINE
1006	select SERIAL_CORE
1007	select FW_LOADER
1008	help
1009	  This driver supports the QE serial ports on Freescale embedded
1010	  PowerPC that contain a QUICC Engine.
1011
1012config SERIAL_SCCNXP
1013	tristate "SCCNXP serial port support"
1014	select SERIAL_CORE
1015	help
1016	  This selects support for an advanced UART from NXP (Philips).
1017	  Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
1018	  SC28L202, SCC68681 and SCC68692.
1019
1020config SERIAL_SCCNXP_CONSOLE
1021	bool "Console on SCCNXP serial port"
1022	depends on SERIAL_SCCNXP=y
1023	select SERIAL_CORE_CONSOLE
1024	help
1025	  Support for console on SCCNXP serial ports.
1026
1027config SERIAL_SC16IS7XX_CORE
1028	tristate
1029
1030config SERIAL_SC16IS7XX
1031	tristate "SC16IS7xx serial support"
1032	select SERIAL_CORE
1033	depends on (SPI_MASTER && !I2C) || I2C
1034	help
1035	  This selects support for SC16IS7xx serial ports.
1036	  Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
1037	  SC16IS760 and SC16IS762. Select supported buses using options below.
1038
1039config SERIAL_SC16IS7XX_I2C
1040	bool "SC16IS7xx for I2C interface"
1041	depends on SERIAL_SC16IS7XX
1042	depends on I2C
1043	select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1044	select REGMAP_I2C if I2C
1045	default y
1046	help
1047	  Enable SC16IS7xx driver on I2C bus,
1048	  If required say y, and say n to i2c if not required,
1049	  Enabled by default to support oldconfig.
1050	  You must select at least one bus for the driver to be built.
1051
1052config SERIAL_SC16IS7XX_SPI
1053	bool "SC16IS7xx for spi interface"
1054	depends on SERIAL_SC16IS7XX
1055	depends on SPI_MASTER
1056	select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
1057	select REGMAP_SPI if SPI_MASTER
1058	help
1059	  Enable SC16IS7xx driver on SPI bus,
1060	  If required say y, and say n to spi if not required,
1061	  This is additional support to existing driver.
1062	  You must select at least one bus for the driver to be built.
1063
1064config SERIAL_TIMBERDALE
1065	tristate "Support for timberdale UART"
1066	select SERIAL_CORE
1067	depends on X86_32 || COMPILE_TEST
1068	help
1069	Add support for UART controller on timberdale.
1070
1071config SERIAL_BCM63XX
1072	tristate "Broadcom BCM63xx/BCM33xx UART support"
1073	select SERIAL_CORE
1074	depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
1075	default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
1076	help
1077	  This enables the driver for the onchip UART core found on
1078	  the following chipsets:
1079
1080	    BCM33xx (cable modem)
1081	    BCM63xx/BCM63xxx (DSL)
1082	    BCM68xx (PON)
1083	    BCM7xxx (STB) - DOCSIS console
1084
1085config SERIAL_BCM63XX_CONSOLE
1086	bool "Console on BCM63xx serial port"
1087	depends on SERIAL_BCM63XX=y
1088	select SERIAL_CORE_CONSOLE
1089	select SERIAL_EARLYCON
1090	help
1091	  If you have enabled the serial port on the BCM63xx CPU
1092	  you can make it the console by answering Y to this option.
1093
1094config SERIAL_GRLIB_GAISLER_APBUART
1095	tristate "GRLIB APBUART serial support"
1096	depends on OF && SPARC
1097	select SERIAL_CORE
1098	help
1099	Add support for the GRLIB APBUART serial port.
1100
1101config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1102	bool "Console on GRLIB APBUART serial port"
1103	depends on SERIAL_GRLIB_GAISLER_APBUART=y
1104	select SERIAL_CORE_CONSOLE
1105	help
1106	Support for running a console on the GRLIB APBUART
1107
1108config SERIAL_ALTERA_JTAGUART
1109	tristate "Altera JTAG UART support"
1110	select SERIAL_CORE
1111	help
1112	  This driver supports the Altera JTAG UART port.
1113
1114config SERIAL_ALTERA_JTAGUART_CONSOLE
1115	bool "Altera JTAG UART console support"
1116	depends on SERIAL_ALTERA_JTAGUART=y
1117	select SERIAL_CORE_CONSOLE
1118	select SERIAL_EARLYCON
1119	help
1120	  Enable a Altera JTAG UART port to be the system console.
1121
1122config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
1123	bool "Bypass output when no connection"
1124	depends on SERIAL_ALTERA_JTAGUART_CONSOLE
1125	select SERIAL_CORE_CONSOLE
1126	help
1127	  Bypass console output and keep going even if there is no
1128	  JTAG terminal connection with the host.
1129
1130config SERIAL_ALTERA_UART
1131	tristate "Altera UART support"
1132	select SERIAL_CORE
1133	help
1134	  This driver supports the Altera softcore UART port.
1135
1136config SERIAL_ALTERA_UART_MAXPORTS
1137	int "Maximum number of Altera UART ports"
1138	depends on SERIAL_ALTERA_UART
1139	default 4
1140	help
1141	  This setting lets you define the maximum number of the Altera
1142	  UART ports. The usual default varies from board to board, and
1143	  this setting is a way of catering for that.
1144
1145config SERIAL_ALTERA_UART_BAUDRATE
1146	int "Default baudrate for Altera UART ports"
1147	depends on SERIAL_ALTERA_UART
1148	default 115200
1149	help
1150	  This setting lets you define what the default baudrate is for the
1151	  Altera UART ports. The usual default varies from board to board,
1152	  and this setting is a way of catering for that.
1153
1154config SERIAL_ALTERA_UART_CONSOLE
1155	bool "Altera UART console support"
1156	depends on SERIAL_ALTERA_UART=y
1157	select SERIAL_CORE_CONSOLE
1158	select SERIAL_EARLYCON
1159	help
1160	  Enable a Altera UART port to be the system console.
1161
1162config SERIAL_PCH_UART
1163	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
1164	depends on PCI && (X86_32 || MIPS ||  COMPILE_TEST)
1165	select SERIAL_CORE
1166	help
1167	  This driver is for PCH(Platform controller Hub) UART of Intel EG20T
1168	  which is an IOH(Input/Output Hub) for x86 embedded processor.
1169	  Enabling PCH_DMA, this PCH UART works as DMA mode.
1170
1171	  This driver also can be used for LAPIS Semiconductor IOH(Input/
1172	  Output Hub), ML7213, ML7223 and ML7831.
1173	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
1174	  for MP(Media Phone) use and ML7831 IOH is for general purpose use.
1175	  ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1176	  ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1177
1178config SERIAL_PCH_UART_CONSOLE
1179	bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
1180	depends on SERIAL_PCH_UART=y
1181	select SERIAL_CORE_CONSOLE
1182	help
1183	  Say Y here if you wish to use the PCH UART as the system console
1184	  (the system  console is the device which receives all kernel messages and
1185	  warnings and which allows logins in single user mode).
1186
1187config SERIAL_MXS_AUART
1188	tristate "MXS AUART support"
1189	depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
1190	select SERIAL_CORE
1191	select SERIAL_MCTRL_GPIO if GPIOLIB
1192	help
1193	  This driver supports the MXS and Alphascale ASM9260 Application
1194	  UART (AUART) port.
1195
1196config SERIAL_MXS_AUART_CONSOLE
1197	bool "MXS AUART console support"
1198	depends on SERIAL_MXS_AUART=y
1199	select SERIAL_CORE_CONSOLE
1200	help
1201	  Enable a MXS AUART port to be the system console.
1202
1203config SERIAL_XILINX_PS_UART
1204	tristate "Cadence (Xilinx Zynq) UART support"
1205	depends on OF
1206	select SERIAL_CORE
1207	help
1208	  This driver supports the Cadence UART. It is found e.g. in Xilinx
1209	  Zynq.
1210
1211config SERIAL_XILINX_PS_UART_CONSOLE
1212	bool "Cadence UART console support"
1213	depends on SERIAL_XILINX_PS_UART=y
1214	select SERIAL_CORE_CONSOLE
1215	select SERIAL_EARLYCON
1216	help
1217	  Enable a Cadence UART port to be the system console.
1218
1219config SERIAL_AR933X
1220	tristate "AR933X serial port support"
1221	depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST)
1222	select SERIAL_CORE
1223	select SERIAL_MCTRL_GPIO if GPIOLIB
1224	help
1225	  If you have an Atheros AR933X SOC based board and want to use the
1226	  built-in UART of the SoC, say Y to this option.
1227
1228	  To compile this driver as a module, choose M here: the
1229	  module will be called ar933x_uart.
1230
1231config SERIAL_AR933X_CONSOLE
1232	bool "Console on AR933X serial port"
1233	depends on SERIAL_AR933X=y
1234	select SERIAL_CORE_CONSOLE
1235	help
1236	  Enable a built-in UART port of the AR933X to be the system console.
1237
1238config SERIAL_AR933X_NR_UARTS
1239	int "Maximum number of AR933X serial ports"
1240	depends on SERIAL_AR933X
1241	default "2"
1242	help
1243	  Set this to the number of serial ports you want the driver
1244	  to support.
1245
1246config SERIAL_MPS2_UART_CONSOLE
1247	bool "MPS2 UART console support"
1248	depends on SERIAL_MPS2_UART
1249	select SERIAL_CORE_CONSOLE
1250	select SERIAL_EARLYCON
1251
1252config SERIAL_MPS2_UART
1253	bool "MPS2 UART port"
1254	depends on ARCH_MPS2 || COMPILE_TEST
1255	select SERIAL_CORE
1256	help
1257	  This driver support the UART ports on ARM MPS2.
1258
1259config SERIAL_ARC
1260	tristate "ARC UART driver support"
1261	select SERIAL_CORE
1262	help
1263	  Driver for on-chip UART for ARC(Synopsys) for the legacy
1264	  FPGA Boards (ML50x/ARCAngel4)
1265
1266config SERIAL_ARC_CONSOLE
1267	bool "Console on ARC UART"
1268	depends on SERIAL_ARC=y
1269	select SERIAL_CORE_CONSOLE
1270	select SERIAL_EARLYCON
1271	help
1272	  Enable system Console on ARC UART
1273
1274config SERIAL_ARC_NR_PORTS
1275	int "Number of ARC UART ports"
1276	depends on SERIAL_ARC
1277	range 1 3
1278	default "1"
1279	help
1280	  Set this to the number of serial ports you want the driver
1281	  to support.
1282
1283config SERIAL_RP2
1284	tristate "Comtrol RocketPort EXPRESS/INFINITY support"
1285	depends on PCI
1286	select SERIAL_CORE
1287	help
1288	  This driver supports the Comtrol RocketPort EXPRESS and
1289	  RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
1290	  These adapters use a "RocketPort 2" ASIC that is not compatible
1291	  with the original RocketPort driver (CONFIG_ROCKETPORT).
1292
1293	  To compile this driver as a module, choose M here: the
1294	  module will be called rp2.
1295
1296	  If you want to compile this driver into the kernel, say Y here.  If
1297	  you don't have a suitable RocketPort card installed, say N.
1298
1299config SERIAL_RP2_NR_UARTS
1300	int "Maximum number of RocketPort EXPRESS/INFINITY ports"
1301	depends on SERIAL_RP2
1302	default "32"
1303	help
1304	  If multiple cards are present, the default limit of 32 ports may
1305	  need to be increased.
1306
1307config SERIAL_FSL_LPUART
1308	tristate "Freescale lpuart serial port support"
1309	depends on HAS_DMA
1310	select SERIAL_CORE
1311	help
1312	  Support for the on-chip lpuart on some Freescale SOCs.
1313
1314config SERIAL_FSL_LPUART_CONSOLE
1315	bool "Console on Freescale lpuart serial port"
1316	depends on SERIAL_FSL_LPUART
1317	select SERIAL_CORE_CONSOLE
1318	select SERIAL_EARLYCON
1319	help
1320	  If you have enabled the lpuart serial port on the Freescale SoCs,
1321	  you can make it the console by answering Y to this option.
1322
1323config SERIAL_FSL_LINFLEXUART
1324	tristate "Freescale LINFlexD UART serial port support"
1325	depends on PRINTK
1326	select SERIAL_CORE
1327	help
1328	  Support for the on-chip LINFlexD UART on some Freescale SOCs.
1329
1330config SERIAL_FSL_LINFLEXUART_CONSOLE
1331	bool "Console on Freescale LINFlexD UART serial port"
1332	depends on SERIAL_FSL_LINFLEXUART=y
1333	select SERIAL_CORE_CONSOLE
1334	select SERIAL_EARLYCON
1335	help
1336	  If you have enabled the LINFlexD UART serial port on the Freescale
1337	  SoCs, you can make it the console by answering Y to this option.
1338
1339config SERIAL_CONEXANT_DIGICOLOR
1340	tristate "Conexant Digicolor CX92xxx USART serial port support"
1341	depends on OF
1342	select SERIAL_CORE
1343	help
1344	  Support for the on-chip USART on Conexant Digicolor SoCs.
1345
1346config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
1347	bool "Console on Conexant Digicolor serial port"
1348	depends on SERIAL_CONEXANT_DIGICOLOR=y
1349	select SERIAL_CORE_CONSOLE
1350	help
1351	  If you have enabled the USART serial port on Conexant Digicolor
1352	  SoCs, you can make it the console by answering Y to this option.
1353
1354config SERIAL_ST_ASC
1355	tristate "ST ASC serial port support"
1356	select SERIAL_CORE
1357	depends on ARM || COMPILE_TEST
1358	help
1359	  This driver is for the on-chip Asynchronous Serial Controller on
1360	  STMicroelectronics STi SoCs.
1361	  ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
1362	  It support all industry standard baud rates.
1363
1364	  If unsure, say N.
1365
1366config SERIAL_ST_ASC_CONSOLE
1367	bool "Support for console on ST ASC"
1368	depends on SERIAL_ST_ASC=y
1369	select SERIAL_CORE_CONSOLE
1370
1371config SERIAL_MEN_Z135
1372	tristate "MEN 16z135 Support"
1373	select SERIAL_CORE
1374	depends on MCB
1375	help
1376	  Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
1377	  on a MCB carrier.
1378
1379	  This driver can also be build as a module. If so, the module will be called
1380	  men_z135_uart.ko
1381
1382config SERIAL_SPRD
1383	tristate "Support for Spreadtrum serial"
1384	select SERIAL_CORE
1385	depends on COMMON_CLK
1386	help
1387	  This enables the driver for the Spreadtrum's serial.
1388
1389config SERIAL_SPRD_CONSOLE
1390	bool "Spreadtrum UART console support"
1391	depends on SERIAL_SPRD=y
1392	select SERIAL_CORE_CONSOLE
1393	select SERIAL_EARLYCON
1394	help
1395	  Support for early debug console using Spreadtrum's serial. This enables
1396	  the console before standard serial driver is probed. This is enabled
1397	  with "earlycon" on the kernel command line. The console is
1398	  enabled when early_param is processed.
1399
1400config SERIAL_STM32
1401	tristate "STMicroelectronics STM32 serial port support"
1402	select SERIAL_CORE
1403	depends on ARCH_STM32 || COMPILE_TEST
1404	select SERIAL_MCTRL_GPIO if GPIOLIB
1405	help
1406	  This driver is for the on-chip Serial Controller on
1407	  STMicroelectronics STM32 MCUs.
1408	  USART supports Rx & Tx functionality.
1409	  It support all industry standard baud rates.
1410
1411	  If unsure, say N.
1412
1413config SERIAL_STM32_CONSOLE
1414	bool "Support for console on STM32"
1415	depends on SERIAL_STM32=y
1416	select SERIAL_CORE_CONSOLE
1417	select SERIAL_EARLYCON
1418
1419config SERIAL_MVEBU_UART
1420	bool "Marvell EBU serial port support"
1421	depends on ARCH_MVEBU || COMPILE_TEST
1422	depends on COMMON_CLK
1423	select SERIAL_CORE
1424	help
1425	  This driver is for Marvell EBU SoC's UART. If you have a machine
1426	  based on the Armada-3700 SoC and wish to use the on-board serial
1427	  port,
1428	  say 'Y' here.
1429	  Otherwise, say 'N'.
1430
1431config SERIAL_MVEBU_CONSOLE
1432	bool "Console on Marvell EBU serial port"
1433	depends on SERIAL_MVEBU_UART
1434	select SERIAL_CORE_CONSOLE
1435	select SERIAL_EARLYCON
1436	default y
1437	help
1438	  Say 'Y' here if you wish to use Armada-3700 UART as the system console.
1439	  (the system console is the device which receives all kernel messages
1440	  and warnings and which allows logins in single user mode)
1441	  Otherwise, say 'N'.
1442
1443config SERIAL_OWL
1444	tristate "Actions Semi Owl serial port support"
1445	depends on ARCH_ACTIONS || COMPILE_TEST
1446	select SERIAL_CORE
1447	help
1448	  This driver is for Actions Semiconductor S500/S900 SoC's UART.
1449	  Say 'Y' here if you wish to use the on-board serial port.
1450	  Otherwise, say 'N'.
1451
1452config SERIAL_OWL_CONSOLE
1453	bool "Console on Actions Semi Owl serial port"
1454	depends on SERIAL_OWL=y
1455	select SERIAL_CORE_CONSOLE
1456	select SERIAL_EARLYCON
1457	default y
1458	help
1459	  Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
1460	  as the system console.
1461
1462config SERIAL_RDA
1463	bool "RDA Micro serial port support"
1464	depends on ARCH_RDA || COMPILE_TEST
1465	select SERIAL_CORE
1466	help
1467	  This driver is for RDA8810PL SoC's UART.
1468	  Say 'Y' here if you wish to use the on-board serial port.
1469	  Otherwise, say 'N'.
1470
1471config SERIAL_RDA_CONSOLE
1472	bool "Console on RDA Micro serial port"
1473	depends on SERIAL_RDA=y
1474	select SERIAL_CORE_CONSOLE
1475	select SERIAL_EARLYCON
1476	default y
1477	help
1478	  Say 'Y' here if you wish to use the RDA8810PL UART as the system
1479	  console. Only earlycon is implemented currently.
1480
1481config SERIAL_MILBEAUT_USIO
1482	tristate "Milbeaut USIO/UART serial port support"
1483	depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
1484	default ARCH_MILBEAUT
1485	select SERIAL_CORE
1486	help
1487	  This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
1488
1489config SERIAL_MILBEAUT_USIO_PORTS
1490	int "Maximum number of CSIO/UART ports (1-8)"
1491	range 1 8
1492	depends on SERIAL_MILBEAUT_USIO
1493	default "4"
1494
1495config SERIAL_MILBEAUT_USIO_CONSOLE
1496	bool "Support for console on MILBEAUT USIO/UART serial port"
1497	depends on SERIAL_MILBEAUT_USIO=y
1498	default y
1499	select SERIAL_CORE_CONSOLE
1500	select SERIAL_EARLYCON
1501	help
1502	  Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
1503	  SoCs as the system console (the system console is the device which
1504	  receives all kernel messages and warnings and which allows logins in
1505	  single user mode).
1506
1507config SERIAL_LITEUART
1508	tristate "LiteUART serial port support"
1509	depends on HAS_IOMEM
1510	depends on OF
1511	depends on LITEX || COMPILE_TEST
1512	select SERIAL_CORE
1513	help
1514	  This driver is for the FPGA-based LiteUART serial controller from LiteX
1515	  SoC builder.
1516
1517	  Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
1518	  Otherwise, say 'N'.
1519
1520config SERIAL_LITEUART_MAX_PORTS
1521	int "Maximum number of LiteUART ports"
1522	depends on SERIAL_LITEUART
1523	default "1"
1524	help
1525	  Set this to the maximum number of serial ports you want the driver
1526	  to support.
1527
1528config SERIAL_LITEUART_CONSOLE
1529	bool "LiteUART serial port console support"
1530	depends on SERIAL_LITEUART=y
1531	select SERIAL_CORE_CONSOLE
1532	select SERIAL_EARLYCON
1533	help
1534	  Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
1535	  controller from LiteX SoC builder as the system console
1536	  (the system console is the device which receives all kernel messages
1537	  and warnings and which allows logins in single user mode).
1538	  Otherwise, say 'N'.
1539
1540config SERIAL_SUNPLUS
1541	tristate "Sunplus UART support"
1542	depends on ARCH_SUNPLUS || COMPILE_TEST
1543	select SERIAL_CORE
1544	help
1545	  Select this option if you would like to use Sunplus serial port on
1546	  Sunplus SoC SP7021.
1547	  If you enable this option, Sunplus serial ports in the system will
1548	  be registered as ttySUPx.
1549	  This driver can also be built as a module. If so, the module will be
1550	  called sunplus-uart.
1551
1552config SERIAL_SUNPLUS_CONSOLE
1553	bool "Console on Sunplus UART"
1554	depends on SERIAL_SUNPLUS
1555	select SERIAL_CORE_CONSOLE
1556	select SERIAL_EARLYCON
1557	help
1558	  Select this option if you would like to use a Sunplus UART as the
1559	  system console.
1560	  Even if you say Y here, the currently visible virtual console
1561	  (/dev/tty0) will still be used as the system console by default, but
1562	  you can alter that using a kernel command line option such as
1563	  "console=ttySUPx".
1564
1565endmenu
1566
1567config SERIAL_MCTRL_GPIO
1568	tristate
1569