Commit | Line | Data |
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38c91d1d | 1 | # SPDX-License-Identifier: GPL-2.0 |
9bef3d41 PG |
2 | # |
3 | # The 8250/16550 serial drivers. You shouldn't be in this list unless | |
4 | # you somehow have an implicit or explicit dependency on SERIAL_8250. | |
5 | # | |
6 | ||
7 | config SERIAL_8250 | |
8 | tristate "8250/16550 and compatible serial support" | |
1598e38c | 9 | depends on !S390 |
9bef3d41 | 10 | select SERIAL_CORE |
4a96895f | 11 | select SERIAL_MCTRL_GPIO if GPIOLIB |
a7f7f624 | 12 | help |
9bef3d41 PG |
13 | This selects whether you want to include the driver for the standard |
14 | serial ports. The standard answer is Y. People who might say N | |
15 | here are those that are setting up dedicated Ethernet WWW/FTP | |
16 | servers, or users that have one of the various bus mice instead of a | |
17 | serial mouse and don't intend to use their machine's standard serial | |
f76edd8f | 18 | port for anything. |
9bef3d41 PG |
19 | |
20 | To compile this driver as a module, choose M here: the | |
21 | module will be called 8250. | |
22 | [WARNING: Do not compile this driver as a module if you are using | |
23 | non-standard serial ports, since the configuration information will | |
24 | be lost when the driver is unloaded. This limitation may be lifted | |
25 | in the future.] | |
26 | ||
27 | BTW1: If you have a mouseman serial mouse which is not recognized by | |
28 | the X window system, try running gpm first. | |
29 | ||
30 | BTW2: If you intend to use a software modem (also called Winmodem) | |
31 | under Linux, forget it. These modems are crippled and require | |
32 | proprietary drivers which are only available under Windows. | |
33 | ||
34 | Most people will say Y or M here, so that they can use serial mice, | |
35 | modems and similar devices connecting to the standard serial ports. | |
36 | ||
9326b047 JS |
37 | config SERIAL_8250_DEPRECATED_OPTIONS |
38 | bool "Support 8250_core.* kernel options (DEPRECATED)" | |
39 | depends on SERIAL_8250 | |
40 | default y | |
a7f7f624 | 41 | help |
9326b047 JS |
42 | In 3.7 we renamed 8250 to 8250_core by mistake, so now we have to |
43 | accept kernel parameters in both forms like 8250_core.nr_uarts=4 and | |
44 | 8250.nr_uarts=4. We now renamed the module back to 8250, but if | |
45 | anybody noticed in 3.7 and changed their userspace we still have to | |
f3014127 | 46 | keep the 8250_core.* options around until they revert the changes |
9326b047 JS |
47 | they already did. |
48 | ||
49 | If 8250 is built as a module, this adds 8250_core alias instead. | |
50 | ||
51 | If you did not notice yet and/or you have userspace from pre-3.7, it | |
52 | is safe (and recommended) to say N here. | |
53 | ||
835d844d SY |
54 | config SERIAL_8250_PNP |
55 | bool "8250/16550 PNP device support" if EXPERT | |
56 | depends on SERIAL_8250 && PNP | |
57 | default y | |
a7f7f624 | 58 | help |
835d844d SY |
59 | This builds standard PNP serial support. You may be able to |
60 | disable this feature if you only need legacy serial support. | |
61 | ||
dc56ecb8 JT |
62 | config SERIAL_8250_16550A_VARIANTS |
63 | bool "Support for variants of the 16550A serial port" | |
64 | depends on SERIAL_8250 | |
15a3f03d | 65 | default !X86 |
dc56ecb8 JT |
66 | help |
67 | The 8250 driver can probe for many variants of the venerable 16550A | |
68 | serial port. Doing so takes additional time at boot. | |
69 | ||
70 | On modern systems, especially those using serial only for a simple | |
71 | console, you can say N here. | |
72 | ||
fa01e2ca RRD |
73 | config SERIAL_8250_FINTEK |
74 | bool "Support for Fintek F81216A LPC to 4 UART RS485 API" | |
75 | depends on SERIAL_8250 | |
a7f7f624 | 76 | help |
fa01e2ca RRD |
77 | Selecting this option will add support for the RS485 capabilities |
78 | of the Fintek F81216A LPC to 4 UART. | |
79 | ||
80 | If this option is not selected the device will be configured as a | |
81 | standard 16550A serial port. | |
82 | ||
83 | If unsure, say N. | |
84 | ||
9bef3d41 PG |
85 | config SERIAL_8250_CONSOLE |
86 | bool "Console on 8250/16550 and compatible serial port" | |
87 | depends on SERIAL_8250=y | |
88 | select SERIAL_CORE_CONSOLE | |
d2fd6810 | 89 | select SERIAL_EARLYCON |
a7f7f624 | 90 | help |
9bef3d41 PG |
91 | If you say Y here, it will be possible to use a serial port as the |
92 | system console (the system console is the device which receives all | |
93 | kernel messages and warnings and which allows logins in single user | |
94 | mode). This could be useful if some terminal or printer is connected | |
95 | to that serial port. | |
96 | ||
97 | Even if you say Y here, the currently visible virtual console | |
98 | (/dev/tty0) will still be used as the system console by default, but | |
99 | you can alter that using a kernel command line option such as | |
100 | "console=ttyS1". (Try "man bootparam" or see the documentation of | |
101 | your boot loader (grub or lilo or loadlin) about how to pass options | |
102 | to the kernel at boot time.) | |
103 | ||
104 | If you don't have a VGA card installed and you say Y here, the | |
105 | kernel will automatically use the first serial line, /dev/ttyS0, as | |
106 | system console. | |
107 | ||
108 | You can set that using a kernel command line option such as | |
109 | "console=uart8250,io,0x3f8,9600n8" | |
110 | "console=uart8250,mmio,0xff5e0000,115200n8". | |
111 | and it will switch to normal serial console when the corresponding | |
112 | port is ready. | |
113 | "earlycon=uart8250,io,0x3f8,9600n8" | |
114 | "earlycon=uart8250,mmio,0xff5e0000,115200n8". | |
115 | it will not only setup early console. | |
116 | ||
117 | If unsure, say N. | |
118 | ||
9e4e2ce1 | 119 | config SERIAL_8250_PARISC |
9bef3d41 | 120 | tristate |
e8a18e3f | 121 | depends on SERIAL_8250 && PARISC |
9bef3d41 PG |
122 | default SERIAL_8250 |
123 | ||
9ee4b83e HK |
124 | config SERIAL_8250_DMA |
125 | bool "DMA support for 16550 compatible UART controllers" if EXPERT | |
126 | depends on SERIAL_8250 && DMADEVICES=y | |
127 | default SERIAL_8250 | |
128 | help | |
129 | This builds DMA support that can be used with 8250/16650 | |
130 | compatible UART controllers that support DMA signaling. | |
131 | ||
0348386d KT |
132 | config SERIAL_8250_PCILIB |
133 | bool | |
134 | ||
9bef3d41 | 135 | config SERIAL_8250_PCI |
f1e8c710 | 136 | tristate "8250/16550 PCI device support" |
9bef3d41 | 137 | depends on SERIAL_8250 && PCI |
0348386d | 138 | select SERIAL_8250_PCILIB |
9bef3d41 PG |
139 | default SERIAL_8250 |
140 | help | |
141 | This builds standard PCI serial support. You may be able to | |
142 | disable this feature if you only need legacy serial support. | |
143 | Saves about 9K. | |
972ce085 SS |
144 | Note that serial ports on NetMos 9835 Multi-I/O cards are handled |
145 | by the parport_serial driver, enabled with CONFIG_PARPORT_SERIAL. | |
9bef3d41 | 146 | |
d0aeaa83 | 147 | config SERIAL_8250_EXAR |
49e1590c PG |
148 | tristate "8250/16550 Exar/Commtech PCI/PCIe device support" |
149 | depends on SERIAL_8250_PCI | |
5d1a2388 | 150 | default SERIAL_8250 |
49e1590c PG |
151 | help |
152 | This builds support for XR17C1xx, XR17V3xx and some Commtech | |
153 | 422x PCIe serial cards that are not covered by the more generic | |
154 | SERIAL_8250_PCI option. | |
d0aeaa83 | 155 | |
9bef3d41 PG |
156 | config SERIAL_8250_HP300 |
157 | tristate | |
158 | depends on SERIAL_8250 && HP300 | |
159 | default SERIAL_8250 | |
160 | ||
161 | config SERIAL_8250_CS | |
162 | tristate "8250/16550 PCMCIA device support" | |
163 | depends on PCMCIA && SERIAL_8250 | |
a7f7f624 | 164 | help |
9bef3d41 PG |
165 | Say Y here to enable support for 16-bit PCMCIA serial devices, |
166 | including serial port cards, modems, and the modem functions of | |
167 | multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are | |
168 | credit-card size devices often used with laptops.) | |
169 | ||
170 | To compile this driver as a module, choose M here: the | |
171 | module will be called serial_cs. | |
172 | ||
173 | If unsure, say N. | |
174 | ||
562e6ef8 | 175 | config SERIAL_8250_MEN_MCB |
e2fea54e | 176 | tristate "MEN MCB UART device support" |
562e6ef8 MM |
177 | depends on MCB && SERIAL_8250 |
178 | help | |
179 | This enables support for FPGA based UARTs found on many MEN | |
e2fea54e MM |
180 | boards. This driver enables support for the 16z025, 16z057 |
181 | and 16z125 UARTs. | |
562e6ef8 MM |
182 | |
183 | To compile this driver as a module, chose M here: the | |
184 | module will be called 8250_men_mcb. | |
185 | ||
186 | ||
9bef3d41 PG |
187 | config SERIAL_8250_NR_UARTS |
188 | int "Maximum number of 8250/16550 serial ports" | |
189 | depends on SERIAL_8250 | |
190 | default "4" | |
191 | help | |
192 | Set this to the number of serial ports you want the driver | |
193 | to support. This includes any ports discovered via ACPI or | |
194 | PCI enumeration and any ports that may be added at run-time | |
195 | via hot-plug, or any ISA multi-port serial cards. | |
196 | ||
197 | config SERIAL_8250_RUNTIME_UARTS | |
198 | int "Number of 8250/16550 serial ports to register at runtime" | |
199 | depends on SERIAL_8250 | |
200 | range 0 SERIAL_8250_NR_UARTS | |
201 | default "4" | |
202 | help | |
203 | Set this to the maximum number of serial ports you want | |
204 | the kernel to register at boot time. This can be overridden | |
205 | with the module parameter "nr_uarts", or boot-time parameter | |
206 | 8250.nr_uarts | |
207 | ||
208 | config SERIAL_8250_EXTENDED | |
209 | bool "Extended 8250/16550 serial driver options" | |
210 | depends on SERIAL_8250 | |
211 | help | |
212 | If you wish to use any non-standard features of the standard "dumb" | |
213 | driver, say Y here. This includes HUB6 support, shared serial | |
214 | interrupts, special multiport support, support for more than the | |
215 | four COM 1/2/3/4 boards, etc. | |
216 | ||
217 | Note that the answer to this question won't directly affect the | |
218 | kernel: saying N will just cause the configurator to skip all | |
219 | the questions about serial driver options. If unsure, say N. | |
220 | ||
221 | config SERIAL_8250_MANY_PORTS | |
222 | bool "Support more than 4 legacy serial ports" | |
223 | depends on SERIAL_8250_EXTENDED && !IA64 | |
224 | help | |
225 | Say Y here if you have dumb serial boards other than the four | |
226 | standard COM 1/2/3/4 ports. This may happen if you have an AST | |
227 | FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available | |
d4c2b4e7 | 228 | from <https://www.tldp.org/docs.html#howto>), or other custom |
9bef3d41 PG |
229 | serial port hardware which acts similar to standard serial port |
230 | hardware. If you only use the standard COM 1/2/3/4 ports, you can | |
231 | say N here to save some memory. You can also say Y if you have an | |
f76edd8f | 232 | "intelligent" multiport card such as Digiboards, etc. |
9bef3d41 PG |
233 | |
234 | # | |
235 | # Multi-port serial cards | |
236 | # | |
237 | ||
238 | config SERIAL_8250_FOURPORT | |
239 | tristate "Support Fourport cards" | |
240 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
241 | help | |
242 | Say Y here if you have an AST FourPort serial board. | |
243 | ||
244 | To compile this driver as a module, choose M here: the module | |
245 | will be called 8250_fourport. | |
246 | ||
247 | config SERIAL_8250_ACCENT | |
248 | tristate "Support Accent cards" | |
249 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
250 | help | |
251 | Say Y here if you have an Accent Async serial board. | |
252 | ||
253 | To compile this driver as a module, choose M here: the module | |
254 | will be called 8250_accent. | |
255 | ||
7fbcf3af JK |
256 | config SERIAL_8250_ASPEED_VUART |
257 | tristate "Aspeed Virtual UART" | |
258 | depends on SERIAL_8250 | |
259 | depends on OF | |
f8086d1a | 260 | depends on MFD_SYSCON |
806a4497 | 261 | depends on ARCH_ASPEED || COMPILE_TEST |
f8086d1a | 262 | select REGMAP |
7fbcf3af JK |
263 | help |
264 | If you want to use the virtual UART (VUART) device on Aspeed | |
265 | BMC platforms, enable this option. This enables the 16550A- | |
266 | compatible device on the local LPC bus, giving a UART device | |
267 | with no physical RS232 connections. | |
268 | ||
9bef3d41 PG |
269 | config SERIAL_8250_BOCA |
270 | tristate "Support Boca cards" | |
271 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
272 | help | |
273 | Say Y here if you have a Boca serial board. Please read the Boca | |
d4c2b4e7 | 274 | mini-HOWTO, available from <https://www.tldp.org/docs.html#howto> |
9bef3d41 PG |
275 | |
276 | To compile this driver as a module, choose M here: the module | |
277 | will be called 8250_boca. | |
278 | ||
279 | config SERIAL_8250_EXAR_ST16C554 | |
280 | tristate "Support Exar ST16C554/554D Quad UART" | |
281 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
282 | help | |
283 | The Uplogix Envoy TU301 uses this Exar Quad UART. If you are | |
284 | tinkering with your Envoy TU301, or have a machine with this UART, | |
285 | say Y here. | |
286 | ||
287 | To compile this driver as a module, choose M here: the module | |
288 | will be called 8250_exar_st16c554. | |
289 | ||
290 | config SERIAL_8250_HUB6 | |
291 | tristate "Support Hub6 cards" | |
292 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
293 | help | |
294 | Say Y here if you have a HUB6 serial board. | |
295 | ||
296 | To compile this driver as a module, choose M here: the module | |
297 | will be called 8250_hub6. | |
298 | ||
32bb477f KT |
299 | config SERIAL_8250_PCI1XXXX |
300 | tristate "Microchip 8250 based serial port" | |
301 | depends on SERIAL_8250 && PCI | |
302 | select SERIAL_8250_PCILIB | |
32bb477f KT |
303 | help |
304 | Select this option if you have a setup with Microchip PCIe | |
305 | Switch with serial port enabled and wish to enable 8250 | |
306 | serial driver for the serial interface. This driver support | |
307 | will ensure to support baud rates upto 1.5Mpbs. | |
308 | ||
9bef3d41 PG |
309 | # |
310 | # Misc. options/drivers. | |
311 | # | |
312 | ||
313 | config SERIAL_8250_SHARE_IRQ | |
314 | bool "Support for sharing serial interrupts" | |
315 | depends on SERIAL_8250_EXTENDED | |
316 | help | |
317 | Some serial boards have hardware support which allows multiple dumb | |
318 | serial ports on the same board to share a single IRQ. To enable | |
319 | support for this in the serial driver, say Y here. | |
320 | ||
321 | config SERIAL_8250_DETECT_IRQ | |
322 | bool "Autodetect IRQ on standard ports (unsafe)" | |
323 | depends on SERIAL_8250_EXTENDED | |
324 | help | |
325 | Say Y here if you want the kernel to try to guess which IRQ | |
326 | to use for your serial port. | |
327 | ||
328 | This is considered unsafe; it is far better to configure the IRQ in | |
329 | a boot script using the setserial command. | |
330 | ||
331 | If unsure, say N. | |
332 | ||
333 | config SERIAL_8250_RSA | |
334 | bool "Support RSA serial ports" | |
335 | depends on SERIAL_8250_EXTENDED | |
336 | help | |
a95fc9c8 MS |
337 | Say Y here if you have a IODATA RSA-DV II/S ISA card and |
338 | would like to use its >115kbps speeds. | |
339 | You will need to provide module parameter "probe_rsa", or boot-time | |
340 | parameter 8250.probe_rsa with I/O addresses of this card then. | |
341 | ||
342 | If you don't have such card, or if unsure, say N. | |
9bef3d41 | 343 | |
136e0ab9 AS |
344 | config SERIAL_8250_DWLIB |
345 | bool | |
346 | ||
9bef3d41 PG |
347 | config SERIAL_8250_ACORN |
348 | tristate "Acorn expansion card serial port support" | |
349 | depends on ARCH_ACORN && SERIAL_8250 | |
350 | help | |
351 | If you have an Atomwide Serial card or Serial Port card for an Acorn | |
352 | system, say Y to this option. The driver can handle 1, 2, or 3 port | |
353 | cards. If unsure, say N. | |
354 | ||
bdc5f300 MS |
355 | config SERIAL_8250_BCM2835AUX |
356 | tristate "BCM2835 auxiliar mini UART support" | |
357 | depends on ARCH_BCM2835 || COMPILE_TEST | |
358 | depends on SERIAL_8250 && SERIAL_8250_SHARE_IRQ | |
359 | help | |
360 | Support for the BCM2835 auxiliar mini UART. | |
361 | ||
362 | Features and limitations of the UART are | |
363 | Registers are similar to 16650 registers, | |
4500914d | 364 | set bits in the control registers that are unsupported |
bdc5f300 MS |
365 | are ignored and read back as 0 |
366 | 7/8 bit operation with 1 start and 1 stop bit | |
367 | 8 symbols deep fifo for rx and tx | |
368 | SW controlled RTS and SW readable CTS | |
369 | Clock rate derived from system clock | |
370 | Uses 8 times oversampling (compared to 16 times for 16650) | |
371 | Missing break detection (but break generation) | |
372 | Missing framing error detection | |
373 | Missing parity bit | |
374 | Missing receive time-out interrupt | |
375 | Missing DCD, DSR, DTR and RI signals | |
376 | ||
377 | If unsure, say N. | |
378 | ||
9bef3d41 | 379 | config SERIAL_8250_FSL |
cb228221 | 380 | bool "Freescale 16550 UART support" if COMPILE_TEST && !(PPC || ARM || ARM64) |
d43b54d2 | 381 | depends on SERIAL_8250_CONSOLE |
cb228221 JH |
382 | default PPC || ARM || ARM64 |
383 | help | |
384 | Selecting this option enables a workaround for a break-detection | |
385 | erratum for Freescale 16550 UARTs in the 8250 driver. It also | |
386 | enables support for ACPI enumeration. | |
9bef3d41 | 387 | |
e34a79d0 MG |
388 | config SERIAL_8250_DFL |
389 | tristate "DFL bus driver for Altera 16550 UART" | |
390 | depends on SERIAL_8250 && FPGA_DFL | |
391 | help | |
392 | This option enables support for a Device Feature List (DFL) bus | |
393 | driver for the Altera 16550 UART. One or more Altera 16550 UARTs | |
394 | can be instantiated in a FPGA and then be discovered during | |
395 | enumeration of the DFL bus. | |
396 | ||
397 | To compile this driver as a module, chose M here: the | |
398 | module will be called 8250_dfl. | |
399 | ||
9bef3d41 PG |
400 | config SERIAL_8250_DW |
401 | tristate "Support for Synopsys DesignWare 8250 quirks" | |
6a7320c4 | 402 | depends on SERIAL_8250 |
4d5675c3 | 403 | select SERIAL_8250_DWLIB |
9bef3d41 PG |
404 | help |
405 | Selecting this option will enable handling of the extra features | |
406 | present in the Synopsys DesignWare APB UART. | |
22886ee9 MD |
407 | |
408 | config SERIAL_8250_EM | |
46e99c4a | 409 | tristate "Support for Emma Mobile integrated serial port" |
b1442c55 | 410 | depends on SERIAL_8250 && HAVE_CLK |
857f9713 | 411 | depends on ARCH_RENESAS || COMPILE_TEST |
22886ee9 MD |
412 | help |
413 | Selecting this option will add support for the integrated serial | |
414 | port hardware found on the Emma Mobile line of processors. | |
415 | If unsure, say N. | |
c420811f | 416 | |
0ce5ebd2 TB |
417 | config SERIAL_8250_IOC3 |
418 | tristate "SGI IOC3 8250 UART support" | |
b1442c55 JH |
419 | depends on SERIAL_8250 |
420 | depends on SGI_MFD_IOC3 || COMPILE_TEST | |
0ce5ebd2 TB |
421 | select SERIAL_8250_EXTENDED |
422 | select SERIAL_8250_SHARE_IRQ | |
423 | help | |
424 | Enable this if you have a SGI Origin or Octane machine. This module | |
425 | provides basic serial support by directly driving the UART chip | |
426 | behind the IOC3 device on those systems. Maximum baud speed is | |
427 | 38400bps using this driver. | |
428 | ||
c420811f JC |
429 | config SERIAL_8250_RT288X |
430 | bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" | |
9b2256c8 MR |
431 | depends on SERIAL_8250 |
432 | default y if MIPS_ALCHEMY || SOC_RT288X || SOC_RT305X || SOC_RT3883 || SOC_MT7620 | |
c420811f | 433 | help |
9b2256c8 MR |
434 | Selecting this option will add support for the alternate register |
435 | layout used by Ralink RT288x/RT305x, Alchemy Au1xxx, and some others. | |
436 | If unsure, say N. | |
28e3fb6c | 437 | |
61929cf0 SAS |
438 | config SERIAL_8250_OMAP |
439 | tristate "Support for OMAP internal UART (8250 based driver)" | |
8720037d JH |
440 | depends on SERIAL_8250 |
441 | depends on ARCH_OMAP2PLUS || ARCH_K3 || COMPILE_TEST | |
61929cf0 SAS |
442 | help |
443 | If you have a machine based on an Texas Instruments OMAP CPU you | |
444 | can enable its onboard serial ports by enabling this option. | |
445 | ||
446 | This driver uses ttyS instead of ttyO. | |
447 | ||
00648d02 SAS |
448 | config SERIAL_8250_OMAP_TTYO_FIXUP |
449 | bool "Replace ttyO with ttyS" | |
450 | depends on SERIAL_8250_OMAP=y && SERIAL_8250_CONSOLE | |
451 | default y | |
452 | help | |
453 | This option replaces the "console=ttyO" argument with the matching | |
454 | ttyS argument if the user did not specified it on the command line. | |
455 | This ensures that the user can see the kernel output during boot | |
456 | which he wouldn't see otherwise. The getty has still to be configured | |
457 | for ttyS instead of ttyO regardless of this option. | |
458 | This option is intended for people who "automatically" enable this | |
459 | driver without knowing that this driver requires a different console= | |
460 | argument. If you read this, please keep this option disabled and | |
461 | instead update your kernel command line. If you prepare a kernel for a | |
462 | distribution or other kind of larger user base then you probably want | |
463 | to keep this option enabled. Otherwise people might complain about a | |
464 | not booting kernel because the serial console remains silent in case | |
465 | they forgot to update the command line. | |
466 | ||
d2aef35a | 467 | config SERIAL_8250_LPC18XX |
0b1dd999 | 468 | tristate "NXP LPC18xx/43xx serial port support" |
d2aef35a JE |
469 | depends on SERIAL_8250 && OF && (ARCH_LPC18XX || COMPILE_TEST) |
470 | default ARCH_LPC18XX | |
471 | help | |
472 | If you have a LPC18xx/43xx based board and want to use the | |
473 | serial port, say Y to this option. If unsure, say Y. | |
474 | ||
b4756f4f | 475 | config SERIAL_8250_MT6577 |
3f5921a6 | 476 | tristate "Mediatek serial port support" |
8720037d JH |
477 | depends on SERIAL_8250 |
478 | depends on ARCH_MEDIATEK || COMPILE_TEST | |
b4756f4f MB |
479 | help |
480 | If you have a Mediatek based board and want to use the | |
481 | serial port, say Y to this option. If unsure, say N. | |
1a8d2903 MY |
482 | |
483 | config SERIAL_8250_UNIPHIER | |
484 | tristate "Support for UniPhier on-chip UART" | |
8d6d544c MY |
485 | depends on SERIAL_8250 |
486 | depends on ARCH_UNIPHIER || COMPILE_TEST | |
1a8d2903 MY |
487 | help |
488 | If you have a UniPhier based board and want to use the on-chip | |
489 | serial ports, say Y to this option. If unsure, say N. | |
78c10e55 | 490 | |
0cf985f4 | 491 | config SERIAL_8250_INGENIC |
7d774fb8 AB |
492 | tristate "Support for Ingenic SoC serial ports" |
493 | depends on SERIAL_8250 | |
755dd8aa | 494 | depends on OF_FLATTREE |
7d774fb8 | 495 | depends on MIPS || COMPILE_TEST |
0cf985f4 PB |
496 | help |
497 | If you have a system using an Ingenic SoC and wish to make use of | |
498 | its UARTs, say Y to this option. If unsure, say N. | |
d9eda9ba | 499 | |
a13e19cf | 500 | config SERIAL_8250_LPSS |
dce22df1 | 501 | tristate "Support for serial ports on Intel LPSS platforms" |
a13e19cf AS |
502 | default SERIAL_8250 |
503 | depends on SERIAL_8250 && PCI | |
504 | depends on X86 || COMPILE_TEST | |
bf414f55 | 505 | select SERIAL_8250_DWLIB |
a13e19cf AS |
506 | select DW_DMAC_CORE if SERIAL_8250_DMA |
507 | select DW_DMAC_PCI if (SERIAL_8250_DMA && X86_INTEL_LPSS) | |
508 | select RATIONAL | |
509 | help | |
6ba6351b MR |
510 | Selecting this option will enable handling of the UART found on |
511 | various Intel platforms such as: | |
a13e19cf AS |
512 | - Intel Baytrail SoC |
513 | - Intel Braswell SoC | |
6bb5d75e | 514 | - Intel Quark X1000 SoC |
6ba6351b | 515 | that are not covered by the more generic SERIAL_8250_PCI option. |
a13e19cf | 516 | |
d9eda9ba | 517 | config SERIAL_8250_MID |
19458893 | 518 | tristate "Support for serial ports on Intel MID platforms" |
1fc969c7 | 519 | default SERIAL_8250 |
d9eda9ba | 520 | depends on SERIAL_8250 && PCI |
1fc969c7 | 521 | depends on X86 || COMPILE_TEST |
ec2f1b67 | 522 | select HSU_DMA if SERIAL_8250_DMA |
0ff42305 | 523 | select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID) |
fa70045e | 524 | select RATIONAL |
d9eda9ba | 525 | help |
6ba6351b MR |
526 | Selecting this option will enable handling of the UART found on |
527 | Intel Medfield SOC and various other Intel platforms that is not | |
528 | covered by the more generic SERIAL_8250_PCI option. | |
afd7f88f | 529 | |
fcfd3c09 AS |
530 | config SERIAL_8250_PERICOM |
531 | tristate "Support for Pericom and Acces I/O serial ports" | |
532 | default SERIAL_8250 | |
533 | depends on SERIAL_8250 && PCI | |
534 | help | |
6ba6351b MR |
535 | Selecting this option will enable handling of the Pericom and Acces |
536 | I/O UARTs that are not covered by the more generic SERIAL_8250_PCI | |
537 | option. | |
fcfd3c09 | 538 | |
ab28f51c SY |
539 | config SERIAL_8250_PXA |
540 | tristate "PXA serial port support" | |
541 | depends on SERIAL_8250 | |
b1442c55 | 542 | depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST |
ab28f51c SY |
543 | help |
544 | If you have a machine based on an Intel XScale PXA2xx CPU you can | |
545 | enable its onboard serial ports by enabling this option. The option is | |
546 | applicable to both devicetree and legacy boards, and early console is | |
547 | part of its support. | |
548 | ||
c6825c63 JB |
549 | config SERIAL_8250_TEGRA |
550 | tristate "8250 support for Tegra serial ports" | |
551 | default SERIAL_8250 | |
552 | depends on SERIAL_8250 | |
553 | depends on ARCH_TEGRA || COMPILE_TEST | |
554 | help | |
555 | Select this option if you have machine with an NVIDIA Tegra SoC and | |
556 | wish to enable 8250 serial driver for the Tegra serial interfaces. | |
557 | ||
41a46948 AC |
558 | config SERIAL_8250_BCM7271 |
559 | tristate "Broadcom 8250 based serial port" | |
560 | depends on SERIAL_8250 && (ARCH_BRCMSTB || COMPILE_TEST) | |
561 | default ARCH_BRCMSTB | |
562 | help | |
563 | If you have a Broadcom STB based board and want to use the | |
564 | enhanced features of the Broadcom 8250 based serial port, | |
565 | including DMA support and high accuracy BAUD rates, say | |
566 | Y to this option. If unsure, say N. | |
567 | ||
afd7f88f AB |
568 | config SERIAL_OF_PLATFORM |
569 | tristate "Devicetree based probing for 8250 ports" | |
570 | depends on SERIAL_8250 && OF | |
571 | help | |
572 | This option is used for all 8250 compatible serial ports that | |
573 | are probed through devicetree, including Open Firmware based | |
574 | PowerPC systems and embedded systems on architectures using the | |
575 | flattened device tree format. |