diff options
Diffstat (limited to 'drivers/tty/serial/8250/Kconfig')
| -rw-r--r-- | drivers/tty/serial/8250/Kconfig | 221 |
1 files changed, 164 insertions, 57 deletions
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index 15c2c5463835..c488ff6f2865 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # The 8250/16550 serial drivers. You shouldn't be in this list unless # you somehow have an implicit or explicit dependency on SERIAL_8250. @@ -7,14 +8,14 @@ config SERIAL_8250 tristate "8250/16550 and compatible serial support" depends on !S390 select SERIAL_CORE - ---help--- + select SERIAL_MCTRL_GPIO if GPIOLIB + help This selects whether you want to include the driver for the standard serial ports. The standard answer is Y. People who might say N here are those that are setting up dedicated Ethernet WWW/FTP servers, or users that have one of the various bus mice instead of a serial mouse and don't intend to use their machine's standard serial - port for anything. (Note that the Cyclades multi serial port driver - does not need this driver built in for it to work.) + port for anything. To compile this driver as a module, choose M here: the module will be called 8250. @@ -33,40 +34,36 @@ config SERIAL_8250 Most people will say Y or M here, so that they can use serial mice, modems and similar devices connecting to the standard serial ports. -config SERIAL_8250_DEPRECATED_OPTIONS - bool "Support 8250_core.* kernel options (DEPRECATED)" - depends on SERIAL_8250 - default y - ---help--- - In 3.7 we renamed 8250 to 8250_core by mistake, so now we have to - accept kernel parameters in both forms like 8250_core.nr_uarts=4 and - 8250.nr_uarts=4. We now renamed the module back to 8250, but if - anybody noticed in 3.7 and changed their userspace we still have to - keep the 8250_core.* options around until they revert the changes - they already did. - - If 8250 is built as a module, this adds 8250_core alias instead. - - If you did not notice yet and/or you have userspace from pre-3.7, it - is safe (and recommended) to say N here. - config SERIAL_8250_PNP bool "8250/16550 PNP device support" if EXPERT depends on SERIAL_8250 && PNP default y - ---help--- + help This builds standard PNP serial support. You may be able to disable this feature if you only need legacy serial support. -config SERIAL_8250_FINTEK - bool "Support for Fintek F81216A LPC to 4 UART RS485 API" +config SERIAL_8250_16550A_VARIANTS + bool "Support for variants of the 16550A serial port" depends on SERIAL_8250 - ---help--- - Selecting this option will add support for the RS485 capabilities - of the Fintek F81216A LPC to 4 UART. + default !X86 + help + The 8250 driver can probe for many variants of the venerable 16550A + serial port. Doing so takes additional time at boot. + + On modern systems, especially those using serial only for a simple + console, you can say N here. + +config SERIAL_8250_FINTEK + bool "Support for Fintek variants" + depends on SERIAL_8250 && HAS_IOPORT + help + Selecting this option will add support for the RS232 and RS485 + capabilities of the Fintek F81216A LPC to 4 UART as well similar + variants. If this option is not selected the device will be configured as a - standard 16550A serial port. + standard 16550A serial port, however the device may not function + correctly without this option enabled. If unsure, say N. @@ -75,7 +72,7 @@ config SERIAL_8250_CONSOLE depends on SERIAL_8250=y select SERIAL_CORE_CONSOLE select SERIAL_EARLYCON - ---help--- + help If you say Y here, it will be possible to use a serial port as the system console (the system console is the device which receives all kernel messages and warnings and which allows logins in single user @@ -104,9 +101,9 @@ config SERIAL_8250_CONSOLE If unsure, say N. -config SERIAL_8250_GSC +config SERIAL_8250_PARISC tristate - depends on SERIAL_8250 && GSC + depends on SERIAL_8250 && PARISC default SERIAL_8250 config SERIAL_8250_DMA @@ -117,9 +114,13 @@ config SERIAL_8250_DMA This builds DMA support that can be used with 8250/16650 compatible UART controllers that support DMA signaling. +config SERIAL_8250_PCILIB + bool + config SERIAL_8250_PCI tristate "8250/16550 PCI device support" depends on SERIAL_8250 && PCI + select SERIAL_8250_PCILIB default SERIAL_8250 help This builds standard PCI serial support. You may be able to @@ -130,7 +131,9 @@ config SERIAL_8250_PCI config SERIAL_8250_EXAR tristate "8250/16550 Exar/Commtech PCI/PCIe device support" - depends on SERIAL_8250_PCI + depends on SERIAL_8250 && PCI + select SERIAL_8250_PCILIB + select EEPROM_93CX6 default SERIAL_8250 help This builds support for XR17C1xx, XR17V3xx and some Commtech @@ -144,8 +147,8 @@ config SERIAL_8250_HP300 config SERIAL_8250_CS tristate "8250/16550 PCMCIA device support" - depends on PCMCIA && SERIAL_8250 - ---help--- + depends on PCMCIA && SERIAL_8250 && HAS_IOPORT + help Say Y here to enable support for 16-bit PCMCIA serial devices, including serial port cards, modems, and the modem functions of multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are @@ -204,16 +207,16 @@ config SERIAL_8250_EXTENDED config SERIAL_8250_MANY_PORTS bool "Support more than 4 legacy serial ports" - depends on SERIAL_8250_EXTENDED && !IA64 + depends on SERIAL_8250_EXTENDED help Say Y here if you have dumb serial boards other than the four standard COM 1/2/3/4 ports. This may happen if you have an AST FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available - from <http://www.tldp.org/docs.html#howto>), or other custom + from <https://www.tldp.org/docs.html#howto>), or other custom serial port hardware which acts similar to standard serial port hardware. If you only use the standard COM 1/2/3/4 ports, you can say N here to save some memory. You can also say Y if you have an - "intelligent" multiport card such as Cyclades, Digiboards, etc. + "intelligent" multiport card such as Digiboards, etc. # # Multi-port serial cards @@ -241,6 +244,9 @@ config SERIAL_8250_ASPEED_VUART tristate "Aspeed Virtual UART" depends on SERIAL_8250 depends on OF + depends on MFD_SYSCON + depends on ARCH_ASPEED || COMPILE_TEST + select REGMAP help If you want to use the virtual UART (VUART) device on Aspeed BMC platforms, enable this option. This enables the 16550A- @@ -252,7 +258,7 @@ config SERIAL_8250_BOCA depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS help Say Y here if you have a Boca serial board. Please read the Boca - mini-HOWTO, available from <http://www.tldp.org/docs.html#howto> + mini-HOWTO, available from <https://www.tldp.org/docs.html#howto> To compile this driver as a module, choose M here: the module will be called 8250_boca. @@ -277,6 +283,16 @@ config SERIAL_8250_HUB6 To compile this driver as a module, choose M here: the module will be called 8250_hub6. +config SERIAL_8250_PCI1XXXX + tristate "Microchip 8250 based serial port" + depends on SERIAL_8250 && PCI + select SERIAL_8250_PCILIB + help + Select this option if you have a setup with Microchip PCIe + Switch with serial port enabled and wish to enable 8250 + serial driver for the serial interface. This driver support + will ensure to support baud rates upto 1.5Mpbs. + # # Misc. options/drivers. # @@ -312,6 +328,9 @@ config SERIAL_8250_RSA If you don't have such card, or if unsure, say N. +config SERIAL_8250_DWLIB + bool + config SERIAL_8250_ACORN tristate "Acorn expansion card serial port support" depends on ARCH_ACORN && SERIAL_8250 @@ -329,7 +348,7 @@ config SERIAL_8250_BCM2835AUX Features and limitations of the UART are Registers are similar to 16650 registers, - set bits in the control registers that are unsupported + set bits in the control registers that are unsupported are ignored and read back as 0 7/8 bit operation with 1 start and 1 stop bit 8 symbols deep fifo for rx and tx @@ -345,25 +364,68 @@ config SERIAL_8250_BCM2835AUX If unsure, say N. config SERIAL_8250_FSL - bool - depends on SERIAL_8250_CONSOLE - default PPC || ARM || ARM64 + tristate "Freescale 16550 UART support" if COMPILE_TEST && !(PPC || ARM || ARM64) + depends on SERIAL_8250 + default SERIAL_8250 if PPC || ARM || ARM64 + help + Selecting this option enables a workaround for a break-detection + erratum for Freescale 16550 UARTs in the 8250 driver. It also + enables support for ACPI enumeration. + +config SERIAL_8250_DFL + tristate "DFL bus driver for Altera 16550 UART" + depends on SERIAL_8250 && FPGA_DFL + help + This option enables support for a Device Feature List (DFL) bus + driver for the Altera 16550 UART. One or more Altera 16550 UARTs + can be instantiated in a FPGA and then be discovered during + enumeration of the DFL bus. + + To compile this driver as a module, chose M here: the + module will be called 8250_dfl. config SERIAL_8250_DW tristate "Support for Synopsys DesignWare 8250 quirks" depends on SERIAL_8250 + select SERIAL_8250_DWLIB help Selecting this option will enable handling of the extra features present in the Synopsys DesignWare APB UART. config SERIAL_8250_EM tristate "Support for Emma Mobile integrated serial port" - depends on SERIAL_8250 && ARM && HAVE_CLK + depends on SERIAL_8250 && HAVE_CLK + depends on ARCH_RENESAS || COMPILE_TEST help Selecting this option will add support for the integrated serial port hardware found on the Emma Mobile line of processors. If unsure, say N. +config SERIAL_8250_IOC3 + tristate "SGI IOC3 8250 UART support" + depends on SERIAL_8250 + depends on SGI_MFD_IOC3 || COMPILE_TEST + select SERIAL_8250_EXTENDED + select SERIAL_8250_SHARE_IRQ + help + Enable this if you have a SGI Origin or Octane machine. This module + provides basic serial support by directly driving the UART chip + behind the IOC3 device on those systems. Maximum baud speed is + 38400bps using this driver. + +config SERIAL_8250_KEBA + tristate "Support for KEBA 8250 UART" + depends on SERIAL_8250 + depends on KEBA_CP500 + help + Selecting this option will add support for KEBA UARTs. These UARTs + are used for the serial interfaces of KEBA PLCs. + + This driver can also be built as a module. If so, the module will + be called 8250_keba. + + If unsure, say N. + config SERIAL_8250_RT288X bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" depends on SERIAL_8250 @@ -375,7 +437,8 @@ config SERIAL_8250_RT288X config SERIAL_8250_OMAP tristate "Support for OMAP internal UART (8250 based driver)" - depends on SERIAL_8250 && (ARCH_OMAP2PLUS || ARCH_K3) + depends on SERIAL_8250 + depends on ARCH_OMAP2PLUS || ARCH_K3 || COMPILE_TEST help If you have a machine based on an Texas Instruments OMAP CPU you can enable its onboard serial ports by enabling this option. @@ -401,6 +464,16 @@ config SERIAL_8250_OMAP_TTYO_FIXUP not booting kernel because the serial console remains silent in case they forgot to update the command line. +config SERIAL_8250_LOONGSON + tristate "Loongson 8250 based serial port" + depends on SERIAL_8250 + depends on LOONGARCH || COMPILE_TEST + help + If you have a machine based on LoongArch CPU you can enable + its onboard serial ports by enabling this option. The option + is applicable to both devicetree and ACPI, say Y to this option. + If unsure, say N. + config SERIAL_8250_LPC18XX tristate "NXP LPC18xx/43xx serial port support" depends on SERIAL_8250 && OF && (ARCH_LPC18XX || COMPILE_TEST) @@ -411,7 +484,8 @@ config SERIAL_8250_LPC18XX config SERIAL_8250_MT6577 tristate "Mediatek serial port support" - depends on SERIAL_8250 && ARCH_MEDIATEK + depends on SERIAL_8250 + depends on ARCH_MEDIATEK || COMPILE_TEST help If you have a Mediatek based board and want to use the serial port, say Y to this option. If unsure, say N. @@ -438,15 +512,17 @@ config SERIAL_8250_LPSS default SERIAL_8250 depends on SERIAL_8250 && PCI depends on X86 || COMPILE_TEST + select SERIAL_8250_DWLIB select DW_DMAC_CORE if SERIAL_8250_DMA select DW_DMAC_PCI if (SERIAL_8250_DMA && X86_INTEL_LPSS) select RATIONAL help - Selecting this option will enable handling of the extra features - present on the UART found on various Intel platforms such as: + Selecting this option will enable handling of the UART found on + various Intel platforms such as: - Intel Baytrail SoC - Intel Braswell SoC - Intel Quark X1000 SoC + that are not covered by the more generic SERIAL_8250_PCI option. config SERIAL_8250_MID tristate "Support for serial ports on Intel MID platforms" @@ -457,30 +533,61 @@ config SERIAL_8250_MID select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID) select RATIONAL help - Selecting this option will enable handling of the extra features - present on the UART found on Intel Medfield SOC and various other - Intel platforms. + Selecting this option will enable handling of the UART found on + Intel Medfield SOC and various other Intel platforms that is not + covered by the more generic SERIAL_8250_PCI option. -config SERIAL_8250_MOXA - tristate "MOXA SmartIO MUE support" +config SERIAL_8250_PERICOM + tristate "Support for Pericom and Acces I/O serial ports" + default SERIAL_8250 depends on SERIAL_8250 && PCI help - Say Y here if you have a Moxa SmartIO MUE multiport serial card. - If unsure, say N. - - This driver can also be built as a module. The module will be called - 8250_moxa. If you want to do that, say M here. + Selecting this option will enable handling of the Pericom and Acces + I/O UARTs that are not covered by the more generic SERIAL_8250_PCI + option. config SERIAL_8250_PXA tristate "PXA serial port support" depends on SERIAL_8250 - depends on ARCH_PXA || ARCH_MMP + depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST help If you have a machine based on an Intel XScale PXA2xx CPU you can enable its onboard serial ports by enabling this option. The option is applicable to both devicetree and legacy boards, and early console is part of its support. +config SERIAL_8250_TEGRA + tristate "8250 support for Tegra serial ports" + default SERIAL_8250 + depends on SERIAL_8250 + depends on ARCH_TEGRA || COMPILE_TEST + help + Select this option if you have machine with an NVIDIA Tegra SoC and + wish to enable 8250 serial driver for the Tegra serial interfaces. + +config SERIAL_8250_BCM7271 + tristate "Broadcom 8250 based serial port" + depends on SERIAL_8250 && (ARCH_BRCMSTB || COMPILE_TEST) + default ARCH_BRCMSTB + help + If you have a Broadcom STB based board and want to use the + enhanced features of the Broadcom 8250 based serial port, + including DMA support and high accuracy BAUD rates, say + Y to this option. If unsure, say N. + +config SERIAL_8250_NI + tristate "NI 16550 based serial port" + depends on SERIAL_8250 + depends on X86 || COMPILE_TEST + help + This driver supports the integrated serial ports on National + Instruments (NI) controller hardware. This is required for all NI + controller models with onboard RS-485 or dual-mode RS-485/RS-232 + ports. + + To compile this driver as a module, choose M here: the module + will be called 8250_ni. + config SERIAL_OF_PLATFORM tristate "Devicetree based probing for 8250 ports" depends on SERIAL_8250 && OF |