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1 # SPDX-License-Identifier: GPL-2.0
23 non-standard serial ports, since the configuration information will
94 "console=uart8250,io,0x3f8,9600n8"
95 "console=uart8250,mmio,0xff5e0000,115200n8".
98 "earlycon=uart8250,io,0x3f8,9600n8"
99 "earlycon=uart8250,mmio,0xff5e0000,115200n8".
129 Note that serial ports on NetMos 9835 Multi-I/O cards are handled
152 Say Y here to enable support for 16-bit PCMCIA serial devices,
154 multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
155 credit-card size devices often used with laptops.)
166 This enables support for FPGA based UARTs found on many MEN
181 PCI enumeration and any ports that may be added at run-time
182 via hot-plug, or any ISA multi-port serial cards.
187 range 0 SERIAL_8250_NR_UARTS
192 with the module parameter "nr_uarts", or boot-time parameter
199 If you wish to use any non-standard features of the standard "dumb"
214 FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
222 # Multi-port serial cards
252 BMC platforms, enable this option. This enables the 16550A-
261 mini-HOWTO, available from <https://www.tldp.org/docs.html#howto>
287 tristate "Microchip 8250 based serial port"
324 Say Y here if you have a IODATA RSA-DV II/S ISA card and
326 You will need to provide module parameter "probe_rsa", or boot-time
352 are ignored and read back as 0
361 Missing receive time-out interrupt
371 Selecting this option enables a workaround for a break-detection
439 tristate "Support for OMAP internal UART (8250 based driver)"
443 If you have a machine based on an Texas Instruments OMAP CPU you
468 tristate "Loongson 8250 based serial port"
472 If you have a machine based on LoongArch CPU you can enable
482 If you have a LPC18xx/43xx based board and want to use the
490 If you have a Mediatek based board and want to use the
494 tristate "Support for UniPhier on-chip UART"
498 If you have a UniPhier based board and want to use the on-chip
522 - Intel Baytrail SoC
523 - Intel Braswell SoC
524 - Intel Quark X1000 SoC
554 If you have a machine based on an Intel XScale PXA2xx CPU you can
569 tristate "Broadcom 8250 based serial port"
573 If you have a Broadcom STB based board and want to use the
574 enhanced features of the Broadcom 8250 based serial port,
579 tristate "NI 16550 based serial port"
585 controller models with onboard RS-485 or dual-mode RS-485/RS-232
592 tristate "Devicetree based probing for 8250 ports"
596 are probed through devicetree, including Open Firmware based