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 | ||
9bef3d41 PG |
119 | config SERIAL_8250_GSC |
120 | tristate | |
121 | depends on SERIAL_8250 && GSC | |
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 | ||
9bef3d41 | 132 | config SERIAL_8250_PCI |
f1e8c710 | 133 | tristate "8250/16550 PCI device support" |
9bef3d41 PG |
134 | depends on SERIAL_8250 && PCI |
135 | default SERIAL_8250 | |
136 | help | |
137 | This builds standard PCI serial support. You may be able to | |
138 | disable this feature if you only need legacy serial support. | |
139 | Saves about 9K. | |
972ce085 SS |
140 | Note that serial ports on NetMos 9835 Multi-I/O cards are handled |
141 | by the parport_serial driver, enabled with CONFIG_PARPORT_SERIAL. | |
9bef3d41 | 142 | |
d0aeaa83 | 143 | config SERIAL_8250_EXAR |
49e1590c PG |
144 | tristate "8250/16550 Exar/Commtech PCI/PCIe device support" |
145 | depends on SERIAL_8250_PCI | |
5d1a2388 | 146 | default SERIAL_8250 |
49e1590c PG |
147 | help |
148 | This builds support for XR17C1xx, XR17V3xx and some Commtech | |
149 | 422x PCIe serial cards that are not covered by the more generic | |
150 | SERIAL_8250_PCI option. | |
d0aeaa83 | 151 | |
9bef3d41 PG |
152 | config SERIAL_8250_HP300 |
153 | tristate | |
154 | depends on SERIAL_8250 && HP300 | |
155 | default SERIAL_8250 | |
156 | ||
157 | config SERIAL_8250_CS | |
158 | tristate "8250/16550 PCMCIA device support" | |
159 | depends on PCMCIA && SERIAL_8250 | |
a7f7f624 | 160 | help |
9bef3d41 PG |
161 | Say Y here to enable support for 16-bit PCMCIA serial devices, |
162 | including serial port cards, modems, and the modem functions of | |
163 | multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are | |
164 | credit-card size devices often used with laptops.) | |
165 | ||
166 | To compile this driver as a module, choose M here: the | |
167 | module will be called serial_cs. | |
168 | ||
169 | If unsure, say N. | |
170 | ||
562e6ef8 | 171 | config SERIAL_8250_MEN_MCB |
e2fea54e | 172 | tristate "MEN MCB UART device support" |
562e6ef8 MM |
173 | depends on MCB && SERIAL_8250 |
174 | help | |
175 | This enables support for FPGA based UARTs found on many MEN | |
e2fea54e MM |
176 | boards. This driver enables support for the 16z025, 16z057 |
177 | and 16z125 UARTs. | |
562e6ef8 MM |
178 | |
179 | To compile this driver as a module, chose M here: the | |
180 | module will be called 8250_men_mcb. | |
181 | ||
182 | ||
9bef3d41 PG |
183 | config SERIAL_8250_NR_UARTS |
184 | int "Maximum number of 8250/16550 serial ports" | |
185 | depends on SERIAL_8250 | |
186 | default "4" | |
187 | help | |
188 | Set this to the number of serial ports you want the driver | |
189 | to support. This includes any ports discovered via ACPI or | |
190 | PCI enumeration and any ports that may be added at run-time | |
191 | via hot-plug, or any ISA multi-port serial cards. | |
192 | ||
193 | config SERIAL_8250_RUNTIME_UARTS | |
194 | int "Number of 8250/16550 serial ports to register at runtime" | |
195 | depends on SERIAL_8250 | |
196 | range 0 SERIAL_8250_NR_UARTS | |
197 | default "4" | |
198 | help | |
199 | Set this to the maximum number of serial ports you want | |
200 | the kernel to register at boot time. This can be overridden | |
201 | with the module parameter "nr_uarts", or boot-time parameter | |
202 | 8250.nr_uarts | |
203 | ||
204 | config SERIAL_8250_EXTENDED | |
205 | bool "Extended 8250/16550 serial driver options" | |
206 | depends on SERIAL_8250 | |
207 | help | |
208 | If you wish to use any non-standard features of the standard "dumb" | |
209 | driver, say Y here. This includes HUB6 support, shared serial | |
210 | interrupts, special multiport support, support for more than the | |
211 | four COM 1/2/3/4 boards, etc. | |
212 | ||
213 | Note that the answer to this question won't directly affect the | |
214 | kernel: saying N will just cause the configurator to skip all | |
215 | the questions about serial driver options. If unsure, say N. | |
216 | ||
217 | config SERIAL_8250_MANY_PORTS | |
218 | bool "Support more than 4 legacy serial ports" | |
219 | depends on SERIAL_8250_EXTENDED && !IA64 | |
220 | help | |
221 | Say Y here if you have dumb serial boards other than the four | |
222 | standard COM 1/2/3/4 ports. This may happen if you have an AST | |
223 | FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available | |
d4c2b4e7 | 224 | from <https://www.tldp.org/docs.html#howto>), or other custom |
9bef3d41 PG |
225 | serial port hardware which acts similar to standard serial port |
226 | hardware. If you only use the standard COM 1/2/3/4 ports, you can | |
227 | say N here to save some memory. You can also say Y if you have an | |
f76edd8f | 228 | "intelligent" multiport card such as Digiboards, etc. |
9bef3d41 PG |
229 | |
230 | # | |
231 | # Multi-port serial cards | |
232 | # | |
233 | ||
234 | config SERIAL_8250_FOURPORT | |
235 | tristate "Support Fourport cards" | |
236 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
237 | help | |
238 | Say Y here if you have an AST FourPort serial board. | |
239 | ||
240 | To compile this driver as a module, choose M here: the module | |
241 | will be called 8250_fourport. | |
242 | ||
243 | config SERIAL_8250_ACCENT | |
244 | tristate "Support Accent cards" | |
245 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
246 | help | |
247 | Say Y here if you have an Accent Async serial board. | |
248 | ||
249 | To compile this driver as a module, choose M here: the module | |
250 | will be called 8250_accent. | |
251 | ||
7fbcf3af JK |
252 | config SERIAL_8250_ASPEED_VUART |
253 | tristate "Aspeed Virtual UART" | |
254 | depends on SERIAL_8250 | |
255 | depends on OF | |
8d310c91 | 256 | depends on REGMAP && MFD_SYSCON |
7fbcf3af JK |
257 | help |
258 | If you want to use the virtual UART (VUART) device on Aspeed | |
259 | BMC platforms, enable this option. This enables the 16550A- | |
260 | compatible device on the local LPC bus, giving a UART device | |
261 | with no physical RS232 connections. | |
262 | ||
9bef3d41 PG |
263 | config SERIAL_8250_BOCA |
264 | tristate "Support Boca cards" | |
265 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
266 | help | |
267 | Say Y here if you have a Boca serial board. Please read the Boca | |
d4c2b4e7 | 268 | mini-HOWTO, available from <https://www.tldp.org/docs.html#howto> |
9bef3d41 PG |
269 | |
270 | To compile this driver as a module, choose M here: the module | |
271 | will be called 8250_boca. | |
272 | ||
273 | config SERIAL_8250_EXAR_ST16C554 | |
274 | tristate "Support Exar ST16C554/554D Quad UART" | |
275 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
276 | help | |
277 | The Uplogix Envoy TU301 uses this Exar Quad UART. If you are | |
278 | tinkering with your Envoy TU301, or have a machine with this UART, | |
279 | say Y here. | |
280 | ||
281 | To compile this driver as a module, choose M here: the module | |
282 | will be called 8250_exar_st16c554. | |
283 | ||
284 | config SERIAL_8250_HUB6 | |
285 | tristate "Support Hub6 cards" | |
286 | depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS | |
287 | help | |
288 | Say Y here if you have a HUB6 serial board. | |
289 | ||
290 | To compile this driver as a module, choose M here: the module | |
291 | will be called 8250_hub6. | |
292 | ||
293 | # | |
294 | # Misc. options/drivers. | |
295 | # | |
296 | ||
297 | config SERIAL_8250_SHARE_IRQ | |
298 | bool "Support for sharing serial interrupts" | |
299 | depends on SERIAL_8250_EXTENDED | |
300 | help | |
301 | Some serial boards have hardware support which allows multiple dumb | |
302 | serial ports on the same board to share a single IRQ. To enable | |
303 | support for this in the serial driver, say Y here. | |
304 | ||
305 | config SERIAL_8250_DETECT_IRQ | |
306 | bool "Autodetect IRQ on standard ports (unsafe)" | |
307 | depends on SERIAL_8250_EXTENDED | |
308 | help | |
309 | Say Y here if you want the kernel to try to guess which IRQ | |
310 | to use for your serial port. | |
311 | ||
312 | This is considered unsafe; it is far better to configure the IRQ in | |
313 | a boot script using the setserial command. | |
314 | ||
315 | If unsure, say N. | |
316 | ||
317 | config SERIAL_8250_RSA | |
318 | bool "Support RSA serial ports" | |
319 | depends on SERIAL_8250_EXTENDED | |
320 | help | |
a95fc9c8 MS |
321 | Say Y here if you have a IODATA RSA-DV II/S ISA card and |
322 | would like to use its >115kbps speeds. | |
323 | You will need to provide module parameter "probe_rsa", or boot-time | |
324 | parameter 8250.probe_rsa with I/O addresses of this card then. | |
325 | ||
326 | If you don't have such card, or if unsure, say N. | |
9bef3d41 | 327 | |
136e0ab9 AS |
328 | config SERIAL_8250_DWLIB |
329 | bool | |
330 | ||
9bef3d41 PG |
331 | config SERIAL_8250_ACORN |
332 | tristate "Acorn expansion card serial port support" | |
333 | depends on ARCH_ACORN && SERIAL_8250 | |
334 | help | |
335 | If you have an Atomwide Serial card or Serial Port card for an Acorn | |
336 | system, say Y to this option. The driver can handle 1, 2, or 3 port | |
337 | cards. If unsure, say N. | |
338 | ||
bdc5f300 MS |
339 | config SERIAL_8250_BCM2835AUX |
340 | tristate "BCM2835 auxiliar mini UART support" | |
341 | depends on ARCH_BCM2835 || COMPILE_TEST | |
342 | depends on SERIAL_8250 && SERIAL_8250_SHARE_IRQ | |
343 | help | |
344 | Support for the BCM2835 auxiliar mini UART. | |
345 | ||
346 | Features and limitations of the UART are | |
347 | Registers are similar to 16650 registers, | |
4500914d | 348 | set bits in the control registers that are unsupported |
bdc5f300 MS |
349 | are ignored and read back as 0 |
350 | 7/8 bit operation with 1 start and 1 stop bit | |
351 | 8 symbols deep fifo for rx and tx | |
352 | SW controlled RTS and SW readable CTS | |
353 | Clock rate derived from system clock | |
354 | Uses 8 times oversampling (compared to 16 times for 16650) | |
355 | Missing break detection (but break generation) | |
356 | Missing framing error detection | |
357 | Missing parity bit | |
358 | Missing receive time-out interrupt | |
359 | Missing DCD, DSR, DTR and RI signals | |
360 | ||
361 | If unsure, say N. | |
362 | ||
9bef3d41 | 363 | config SERIAL_8250_FSL |
cb228221 | 364 | bool "Freescale 16550 UART support" if COMPILE_TEST && !(PPC || ARM || ARM64) |
d43b54d2 | 365 | depends on SERIAL_8250_CONSOLE |
cb228221 JH |
366 | default PPC || ARM || ARM64 |
367 | help | |
368 | Selecting this option enables a workaround for a break-detection | |
369 | erratum for Freescale 16550 UARTs in the 8250 driver. It also | |
370 | enables support for ACPI enumeration. | |
9bef3d41 PG |
371 | |
372 | config SERIAL_8250_DW | |
373 | tristate "Support for Synopsys DesignWare 8250 quirks" | |
6a7320c4 | 374 | depends on SERIAL_8250 |
4d5675c3 | 375 | select SERIAL_8250_DWLIB |
9bef3d41 PG |
376 | help |
377 | Selecting this option will enable handling of the extra features | |
378 | present in the Synopsys DesignWare APB UART. | |
22886ee9 MD |
379 | |
380 | config SERIAL_8250_EM | |
46e99c4a | 381 | tristate "Support for Emma Mobile integrated serial port" |
b1442c55 | 382 | depends on SERIAL_8250 && HAVE_CLK |
857f9713 | 383 | depends on ARCH_RENESAS || COMPILE_TEST |
22886ee9 MD |
384 | help |
385 | Selecting this option will add support for the integrated serial | |
386 | port hardware found on the Emma Mobile line of processors. | |
387 | If unsure, say N. | |
c420811f | 388 | |
0ce5ebd2 TB |
389 | config SERIAL_8250_IOC3 |
390 | tristate "SGI IOC3 8250 UART support" | |
b1442c55 JH |
391 | depends on SERIAL_8250 |
392 | depends on SGI_MFD_IOC3 || COMPILE_TEST | |
0ce5ebd2 TB |
393 | select SERIAL_8250_EXTENDED |
394 | select SERIAL_8250_SHARE_IRQ | |
395 | help | |
396 | Enable this if you have a SGI Origin or Octane machine. This module | |
397 | provides basic serial support by directly driving the UART chip | |
398 | behind the IOC3 device on those systems. Maximum baud speed is | |
399 | 38400bps using this driver. | |
400 | ||
c420811f JC |
401 | config SERIAL_8250_RT288X |
402 | bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" | |
9b2256c8 MR |
403 | depends on SERIAL_8250 |
404 | default y if MIPS_ALCHEMY || SOC_RT288X || SOC_RT305X || SOC_RT3883 || SOC_MT7620 | |
c420811f | 405 | help |
9b2256c8 MR |
406 | Selecting this option will add support for the alternate register |
407 | layout used by Ralink RT288x/RT305x, Alchemy Au1xxx, and some others. | |
408 | If unsure, say N. | |
28e3fb6c | 409 | |
61929cf0 SAS |
410 | config SERIAL_8250_OMAP |
411 | tristate "Support for OMAP internal UART (8250 based driver)" | |
8720037d JH |
412 | depends on SERIAL_8250 |
413 | depends on ARCH_OMAP2PLUS || ARCH_K3 || COMPILE_TEST | |
61929cf0 SAS |
414 | help |
415 | If you have a machine based on an Texas Instruments OMAP CPU you | |
416 | can enable its onboard serial ports by enabling this option. | |
417 | ||
418 | This driver uses ttyS instead of ttyO. | |
419 | ||
00648d02 SAS |
420 | config SERIAL_8250_OMAP_TTYO_FIXUP |
421 | bool "Replace ttyO with ttyS" | |
422 | depends on SERIAL_8250_OMAP=y && SERIAL_8250_CONSOLE | |
423 | default y | |
424 | help | |
425 | This option replaces the "console=ttyO" argument with the matching | |
426 | ttyS argument if the user did not specified it on the command line. | |
427 | This ensures that the user can see the kernel output during boot | |
428 | which he wouldn't see otherwise. The getty has still to be configured | |
429 | for ttyS instead of ttyO regardless of this option. | |
430 | This option is intended for people who "automatically" enable this | |
431 | driver without knowing that this driver requires a different console= | |
432 | argument. If you read this, please keep this option disabled and | |
433 | instead update your kernel command line. If you prepare a kernel for a | |
434 | distribution or other kind of larger user base then you probably want | |
435 | to keep this option enabled. Otherwise people might complain about a | |
436 | not booting kernel because the serial console remains silent in case | |
437 | they forgot to update the command line. | |
438 | ||
d2aef35a | 439 | config SERIAL_8250_LPC18XX |
0b1dd999 | 440 | tristate "NXP LPC18xx/43xx serial port support" |
d2aef35a JE |
441 | depends on SERIAL_8250 && OF && (ARCH_LPC18XX || COMPILE_TEST) |
442 | default ARCH_LPC18XX | |
443 | help | |
444 | If you have a LPC18xx/43xx based board and want to use the | |
445 | serial port, say Y to this option. If unsure, say Y. | |
446 | ||
b4756f4f | 447 | config SERIAL_8250_MT6577 |
3f5921a6 | 448 | tristate "Mediatek serial port support" |
8720037d JH |
449 | depends on SERIAL_8250 |
450 | depends on ARCH_MEDIATEK || COMPILE_TEST | |
b4756f4f MB |
451 | help |
452 | If you have a Mediatek based board and want to use the | |
453 | serial port, say Y to this option. If unsure, say N. | |
1a8d2903 MY |
454 | |
455 | config SERIAL_8250_UNIPHIER | |
456 | tristate "Support for UniPhier on-chip UART" | |
8d6d544c MY |
457 | depends on SERIAL_8250 |
458 | depends on ARCH_UNIPHIER || COMPILE_TEST | |
1a8d2903 MY |
459 | help |
460 | If you have a UniPhier based board and want to use the on-chip | |
461 | serial ports, say Y to this option. If unsure, say N. | |
78c10e55 | 462 | |
0cf985f4 | 463 | config SERIAL_8250_INGENIC |
7d774fb8 AB |
464 | tristate "Support for Ingenic SoC serial ports" |
465 | depends on SERIAL_8250 | |
755dd8aa | 466 | depends on OF_FLATTREE |
7d774fb8 | 467 | depends on MIPS || COMPILE_TEST |
0cf985f4 PB |
468 | help |
469 | If you have a system using an Ingenic SoC and wish to make use of | |
470 | its UARTs, say Y to this option. If unsure, say N. | |
d9eda9ba | 471 | |
a13e19cf | 472 | config SERIAL_8250_LPSS |
dce22df1 | 473 | tristate "Support for serial ports on Intel LPSS platforms" |
a13e19cf AS |
474 | default SERIAL_8250 |
475 | depends on SERIAL_8250 && PCI | |
476 | depends on X86 || COMPILE_TEST | |
bf414f55 | 477 | select SERIAL_8250_DWLIB |
a13e19cf AS |
478 | select DW_DMAC_CORE if SERIAL_8250_DMA |
479 | select DW_DMAC_PCI if (SERIAL_8250_DMA && X86_INTEL_LPSS) | |
480 | select RATIONAL | |
481 | help | |
6ba6351b MR |
482 | Selecting this option will enable handling of the UART found on |
483 | various Intel platforms such as: | |
a13e19cf AS |
484 | - Intel Baytrail SoC |
485 | - Intel Braswell SoC | |
6bb5d75e | 486 | - Intel Quark X1000 SoC |
6ba6351b | 487 | that are not covered by the more generic SERIAL_8250_PCI option. |
a13e19cf | 488 | |
d9eda9ba | 489 | config SERIAL_8250_MID |
19458893 | 490 | tristate "Support for serial ports on Intel MID platforms" |
1fc969c7 | 491 | default SERIAL_8250 |
d9eda9ba | 492 | depends on SERIAL_8250 && PCI |
1fc969c7 | 493 | depends on X86 || COMPILE_TEST |
ec2f1b67 | 494 | select HSU_DMA if SERIAL_8250_DMA |
0ff42305 | 495 | select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID) |
fa70045e | 496 | select RATIONAL |
d9eda9ba | 497 | help |
6ba6351b MR |
498 | Selecting this option will enable handling of the UART found on |
499 | Intel Medfield SOC and various other Intel platforms that is not | |
500 | covered by the more generic SERIAL_8250_PCI option. | |
afd7f88f | 501 | |
fcfd3c09 AS |
502 | config SERIAL_8250_PERICOM |
503 | tristate "Support for Pericom and Acces I/O serial ports" | |
504 | default SERIAL_8250 | |
505 | depends on SERIAL_8250 && PCI | |
506 | help | |
6ba6351b MR |
507 | Selecting this option will enable handling of the Pericom and Acces |
508 | I/O UARTs that are not covered by the more generic SERIAL_8250_PCI | |
509 | option. | |
fcfd3c09 | 510 | |
ab28f51c SY |
511 | config SERIAL_8250_PXA |
512 | tristate "PXA serial port support" | |
513 | depends on SERIAL_8250 | |
b1442c55 | 514 | depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST |
ab28f51c SY |
515 | help |
516 | If you have a machine based on an Intel XScale PXA2xx CPU you can | |
517 | enable its onboard serial ports by enabling this option. The option is | |
518 | applicable to both devicetree and legacy boards, and early console is | |
519 | part of its support. | |
520 | ||
c6825c63 JB |
521 | config SERIAL_8250_TEGRA |
522 | tristate "8250 support for Tegra serial ports" | |
523 | default SERIAL_8250 | |
524 | depends on SERIAL_8250 | |
525 | depends on ARCH_TEGRA || COMPILE_TEST | |
526 | help | |
527 | Select this option if you have machine with an NVIDIA Tegra SoC and | |
528 | wish to enable 8250 serial driver for the Tegra serial interfaces. | |
529 | ||
41a46948 AC |
530 | config SERIAL_8250_BCM7271 |
531 | tristate "Broadcom 8250 based serial port" | |
532 | depends on SERIAL_8250 && (ARCH_BRCMSTB || COMPILE_TEST) | |
533 | default ARCH_BRCMSTB | |
534 | help | |
535 | If you have a Broadcom STB based board and want to use the | |
536 | enhanced features of the Broadcom 8250 based serial port, | |
537 | including DMA support and high accuracy BAUD rates, say | |
538 | Y to this option. If unsure, say N. | |
539 | ||
afd7f88f AB |
540 | config SERIAL_OF_PLATFORM |
541 | tristate "Devicetree based probing for 8250 ports" | |
542 | depends on SERIAL_8250 && OF | |
543 | help | |
544 | This option is used for all 8250 compatible serial ports that | |
545 | are probed through devicetree, including Open Firmware based | |
546 | PowerPC systems and embedded systems on architectures using the | |
547 | flattened device tree format. |