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linux/drivers/tty/serial/Kconfig
Linus Torvalds e5075d8ec5 RISC-V Patches for the 6.8 Merge Window, Part 4 
This includes everything from part 2:
 
 * Support for tuning for systems with fast misaligned accesses.
 * Support for SBI-based suspend.
 * Support for the new SBI debug console extension.
 * The T-Head CMOs now use PA-based flushes.
 * Support for enabling the V extension in kernel code.
 * Optimized IP checksum routines.
 * Various ftrace improvements.
 * Support for archrandom, which depends on the Zkr extension.
 
 and then also a fix for those:
 
 * The build is no longer broken under NET=n, KUNIT=y for ports that
   don't define their own ipv6 checksum.
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Merge tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - Support for tuning for systems with fast misaligned accesses.

 - Support for SBI-based suspend.

 - Support for the new SBI debug console extension.

 - The T-Head CMOs now use PA-based flushes.

 - Support for enabling the V extension in kernel code.

 - Optimized IP checksum routines.

 - Various ftrace improvements.

 - Support for archrandom, which depends on the Zkr extension.

 - The build is no longer broken under NET=n, KUNIT=y for ports that
   don't define their own ipv6 checksum.

* tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits)
  lib: checksum: Fix build with CONFIG_NET=n
  riscv: lib: Check if output in asm goto supported
  riscv: Fix build error on rv32 + XIP
  riscv: optimize ELF relocation function in riscv
  RISC-V: Implement archrandom when Zkr is available
  riscv: Optimize hweight API with Zbb extension
  riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi
  samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
  riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support
  riscv: ftrace: Make function graph use ftrace directly
  riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
  lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
  riscv: Restrict DWARF5 when building with LLVM to known working versions
  riscv: Hoist linker relaxation disabling logic into Kconfig
  kunit: Add tests for csum_ipv6_magic and ip_fast_csum
  riscv: Add checksum library
  riscv: Add checksum header
  riscv: Add static key for misaligned accesses
  asm-generic: Improve csum_fold
  RISC-V: selftests: cbo: Ensure asm operands match constraints
  ...
2024-01-20 11:06:04 -08:00

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# SPDX-License-Identifier: GPL-2.0
#
# Serial device configuration
#
menu "Serial drivers"
depends on HAS_IOMEM
config SERIAL_EARLYCON
bool
depends on SERIAL_CORE
help
Support for early consoles with the earlycon parameter. This enables
the console before standard serial driver is probed. The console is
enabled when early_param is processed.
source "drivers/tty/serial/8250/Kconfig"
comment "Non-8250 serial port support"
config SERIAL_AMBA_PL010
tristate "ARM AMBA PL010 serial port support"
depends on ARM_AMBA || COMPILE_TEST
select SERIAL_CORE
help
This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have
an Integrator/AP or Integrator/PP2 platform, or if you have a
Cirrus Logic EP93xx CPU, say Y or M here.
If unsure, say N.
config SERIAL_AMBA_PL010_CONSOLE
bool "Support for console on AMBA serial port"
depends on SERIAL_AMBA_PL010=y
select SERIAL_CORE_CONSOLE
help
Say Y here if you wish to use an AMBA PrimeCell UART as the system
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).
Even if you say Y here, the currently visible framebuffer console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyAM0". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
config SERIAL_AMBA_PL011
tristate "ARM AMBA PL011 serial port support"
depends on ARM_AMBA
select SERIAL_CORE
help
This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
an Integrator/PP2, Integrator/CP or Versatile platform, say Y or M
here.
If unsure, say N.
config SERIAL_AMBA_PL011_CONSOLE
bool "Support for console on AMBA serial port"
depends on SERIAL_AMBA_PL011=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say Y here if you wish to use an AMBA PrimeCell UART as the system
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).
Even if you say Y here, the currently visible framebuffer console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyAMA0". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
config SERIAL_EARLYCON_SEMIHOST
bool "Early console using Arm compatible semihosting"
depends on ARM64 || ARM || RISCV
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Support for early debug console using Arm compatible semihosting.
This enables the console before standard serial driver is probed.
This is enabled with "earlycon=smh" on the kernel command line.
The console is enabled when early_param is processed.
config SERIAL_EARLYCON_RISCV_SBI
bool "Early console using RISC-V SBI"
depends on RISCV_SBI
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Support for early debug console using RISC-V SBI. This enables
the console before standard serial driver is probed. This is enabled
with "earlycon=sbi" on the kernel command line. The console is
enabled when early_param is processed.
config SERIAL_SB1250_DUART
tristate "BCM1xxx on-chip DUART serial support"
depends on SIBYTE_SB1xxx_SOC=y
select SERIAL_CORE
default y
help
Support for the asynchronous serial interface (DUART) included in
the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
the letter D in DUART stands for "dual", which is how the device
is implemented. Depending on the SOC configuration there may be
one or more DUARTs available of which all are handled.
If unsure, say Y. To compile this driver as a module, choose M here:
the module will be called sb1250-duart.
config SERIAL_SB1250_DUART_CONSOLE
bool "Support for console on a BCM1xxx DUART serial port"
depends on SERIAL_SB1250_DUART=y
select SERIAL_CORE_CONSOLE
default y
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
mode).
If unsure, say Y.
config SERIAL_ATMEL
bool "AT91 on-chip serial port support"
depends on COMMON_CLK
depends on ARCH_AT91 || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
select MFD_AT91_USART
help
This enables the driver for the on-chip UARTs of the Atmel
AT91 processors.
config SERIAL_ATMEL_CONSOLE
bool "Support for console on AT91 serial port"
depends on SERIAL_ATMEL=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say Y here if you wish to use an on-chip UART on a Atmel
AT91 processor as the system console (the system
console is the device which receives all kernel messages and
warnings and which allows logins in single user mode).
config SERIAL_ATMEL_PDC
bool "Support DMA transfers on AT91 serial port"
depends on SERIAL_ATMEL
default y
help
Say Y here if you wish to use the PDC to do DMA transfers to
and from the Atmel AT91 serial port. In order to
actually use DMA transfers, make sure that the use_dma_tx
and use_dma_rx members in the atmel_uart_data struct is set
appropriately for each port.
Note that break and error handling currently doesn't work
properly when DMA is enabled. Make sure that ports where
this matters don't use DMA.
config SERIAL_ATMEL_TTYAT
bool "Install as device ttyATn instead of ttySn"
depends on SERIAL_ATMEL=y
help
Say Y here if you wish to have the internal AT91 UARTs
appear as /dev/ttyATn (major 204, minor starting at 154)
instead of the normal /dev/ttySn (major 4, minor starting at
64). This is necessary if you also want other UARTs, such as
external 8250/16C550 compatible UARTs.
The ttySn nodes are legally reserved for the 8250 serial driver
but are often misused by other serial drivers.
To use this, you should create suitable ttyATn device nodes in
/dev/, and pass "console=ttyATn" to the kernel.
Say Y if you have an external 8250/16C550 UART. If unsure, say N.
config SERIAL_KGDB_NMI
bool "Serial console over KGDB NMI debugger port"
depends on KGDB_SERIAL_CONSOLE
help
This special driver allows you to temporary use NMI debugger port
as a normal console (assuming that the port is attached to KGDB).
Unlike KDB's disable_nmi command, with this driver you are always
able to go back to the debugger using KGDB escape sequence ($3#33).
This is because this console driver processes the input in NMI
context, and thus is able to intercept the magic sequence.
Note that since the console interprets input and uses polling
communication methods, for things like PPP you still must fully
detach debugger port from the KGDB NMI (i.e. disable_nmi), and
use raw console.
If unsure, say N.
config SERIAL_MESON
tristate "Meson serial port support"
depends on ARCH_MESON || COMPILE_TEST
select SERIAL_CORE
help
This enables the driver for the on-chip UARTs of the Amlogic
MesonX processors.
config SERIAL_MESON_CONSOLE
bool "Support for console on meson"
depends on SERIAL_MESON
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say Y here if you wish to use a Amlogic MesonX UART as the
system console (the system console is the device which
receives all kernel messages and warnings and which allows
logins in single user mode) as /dev/ttyAMLx.
config SERIAL_CLPS711X
tristate "CLPS711X serial port support"
depends on ARCH_CLPS711X || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
This enables the driver for the on-chip UARTs of the Cirrus
Logic EP711x/EP721x/EP731x processors.
config SERIAL_CLPS711X_CONSOLE
bool "Support for console on CLPS711X serial port"
depends on SERIAL_CLPS711X=y
select SERIAL_CORE_CONSOLE
help
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyCL1".
config SERIAL_SAMSUNG
tristate "Samsung SoC serial support"
depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || ARCH_APPLE || ARCH_ARTPEC || COMPILE_TEST
select SERIAL_CORE
help
Support for the on-chip UARTs on the Samsung
S3C64xx/S5Pv210/Exynos and Apple M1 SoCs, providing
/dev/ttySAC0, 1 and 2 (note, some machines may not provide all of
these ports, depending on how the serial port pins are configured.
Choose Y/M here only if you build for such SoC.
config SERIAL_SAMSUNG_UARTS
int
depends on SERIAL_SAMSUNG
default 4
help
Select the number of available UART ports for the Samsung S3C
serial driver
config SERIAL_SAMSUNG_CONSOLE
bool "Support for console on Samsung SoC serial port"
depends on SERIAL_SAMSUNG
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Allow selection of the S3C24XX on-board serial ports for use as
an virtual console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySACx". (Try "man bootparam" or see the documentation of
your boot loader about how to pass options to the kernel at
boot time.)
config SERIAL_TEGRA
tristate "NVIDIA Tegra20/30 SoC serial controller"
depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
select SERIAL_CORE
help
Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
providing /dev/ttyTHS0, 1, 2, 3 and 4 (note, some machines may not
provide all of these ports, depending on how the serial port
are enabled). This driver uses the APB DMA to achieve higher baudrate
and better performance.
config SERIAL_TEGRA_TCU
tristate "NVIDIA Tegra Combined UART"
depends on MAILBOX
depends on (ARCH_TEGRA && TEGRA_HSP_MBOX) || COMPILE_TEST
select SERIAL_CORE
help
Support for the mailbox-based TCU (Tegra Combined UART) serial port.
TCU is a virtual serial port that allows multiplexing multiple data
streams into a single hardware serial port.
config SERIAL_TEGRA_TCU_CONSOLE
bool "Support for console on a Tegra TCU serial port"
depends on SERIAL_TEGRA_TCU=y
select SERIAL_CORE_CONSOLE
default y
help
If you say Y here, it will be possible to use a the Tegra TCU as the
system console (the system console is the device which receives all
kernel messages and warnings and which allows logins in single user
mode).
If unsure, say Y.
config SERIAL_MAX3100
tristate "MAX3100 support"
depends on SPI
select SERIAL_CORE
help
MAX3100 chip support
config SERIAL_MAX310X
tristate "MAX310X support"
depends on SPI_MASTER
select SERIAL_CORE
select REGMAP_SPI if SPI_MASTER
select REGMAP_I2C if I2C
help
This selects support for an advanced UART from Maxim (Dallas).
Supported ICs are MAX3107, MAX3108, MAX3109, MAX14830.
Each IC contains 128 words each of receive and transmit FIFO
that can be controlled through I2C or high-speed SPI.
Say Y here if you want to support this ICs.
config SERIAL_DZ
bool "DECstation DZ serial driver"
depends on MACH_DECSTATION && 32BIT
select SERIAL_CORE
default y
help
DZ11-family serial controllers for DECstations and VAXstations,
including the DC7085, M7814, and M7819.
config SERIAL_DZ_CONSOLE
bool "Support console on DECstation DZ serial driver"
depends on SERIAL_DZ=y
select SERIAL_CORE_CONSOLE
default y
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
mode).
Note that the firmware uses ttyS3 as the serial console on
DECstations that use this driver.
If unsure, say Y.
config SERIAL_ZS
tristate "DECstation Z85C30 serial support"
depends on MACH_DECSTATION
select SERIAL_CORE
default y
help
Support for the Zilog 85C350 serial communications controller used
for serial ports in newer DECstation systems. These include the
DECsystem 5900 and all models of the DECstation and DECsystem 5000
systems except from model 200.
If unsure, say Y. To compile this driver as a module, choose M here:
the module will be called zs.
config SERIAL_ZS_CONSOLE
bool "Support for console on a DECstation Z85C30 serial port"
depends on SERIAL_ZS=y
select SERIAL_CORE_CONSOLE
default y
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
mode).
Note that the firmware uses ttyS1 as the serial console on the
Maxine and ttyS3 on the others using this driver.
If unsure, say Y.
config SERIAL_21285
tristate "DC21285 serial port support"
depends on FOOTBRIDGE
select SERIAL_CORE
help
If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
PCI bridge you can enable its onboard serial port by enabling this
option.
config SERIAL_21285_CONSOLE
bool "Console on DC21285 serial port"
depends on SERIAL_21285=y
select SERIAL_CORE_CONSOLE
help
If you have enabled the serial port on the 21285 footbridge you can
make it the console by answering Y to this option.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyFB". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
config SERIAL_PXA
bool "PXA serial port support (DEPRECATED)"
depends on ARCH_PXA || ARCH_MMP
select SERIAL_CORE
select SERIAL_8250_PXA if SERIAL_8250=y
select SERIAL_PXA_NON8250 if !SERIAL_8250=y
help
If you have a machine based on an Intel XScale PXA2xx CPU you
can enable its onboard serial ports by enabling this option.
Unless you have a specific need, you should use SERIAL_8250_PXA
instead of this.
config SERIAL_PXA_NON8250
bool
depends on !SERIAL_8250 || COMPILE_TEST
config SERIAL_PXA_CONSOLE
bool "Console on PXA serial port (DEPRECATED)"
depends on SERIAL_PXA
select SERIAL_CORE_CONSOLE
select SERIAL_8250_CONSOLE if SERIAL_8250=y
help
If you have enabled the serial port on the Intel XScale PXA
CPU you can make it the console by answering Y to this option.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySA0". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
Unless you have a specific need, you should use SERIAL_8250_PXA
and SERIAL_8250_CONSOLE instead of this.
config SERIAL_SA1100
bool "SA1100 serial port support"
depends on ARCH_SA1100
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
can enable its onboard serial port by enabling this option.
Please read <file:Documentation/arch/arm/sa1100/serial_uart.rst> for
further info.
config SERIAL_SA1100_CONSOLE
bool "Console on SA1100 serial port"
depends on SERIAL_SA1100
select SERIAL_CORE_CONSOLE
help
If you have enabled the serial port on the SA1100/SA1110 StrongARM
CPU you can make it the console by answering Y to this option.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySA0". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
config SERIAL_IMX
tristate "IMX serial port support"
depends on ARCH_MXC || COMPILE_TEST
select SERIAL_CORE
select RATIONAL
select SERIAL_MCTRL_GPIO if GPIOLIB
help
If you have a machine based on a Motorola IMX CPU you
can enable its onboard serial port by enabling this option.
config SERIAL_IMX_CONSOLE
tristate "Console on IMX serial port"
depends on SERIAL_IMX
select SERIAL_CORE_CONSOLE
help
If you have enabled the serial port on the Freescale IMX
CPU you can make it the console by answering Y/M to this option.
Even if you say Y/M here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttymxc0". (Try "man bootparam" or see the documentation of
your bootloader about how to pass options to the kernel at boot time.)
config SERIAL_IMX_EARLYCON
bool "Earlycon on IMX serial port"
depends on ARCH_MXC || COMPILE_TEST
depends on OF
select SERIAL_CORE
select SERIAL_EARLYCON
select SERIAL_CORE_CONSOLE
default y if SERIAL_IMX_CONSOLE
help
If you have enabled the earlycon on the Freescale IMX
CPU you can make it the earlycon by answering Y to this option.
config SERIAL_UARTLITE
tristate "Xilinx uartlite serial port support"
depends on HAS_IOMEM
select SERIAL_CORE
help
Say Y here if you want to use the Xilinx uartlite serial controller.
To compile this driver as a module, choose M here: the
module will be called uartlite.
config SERIAL_UARTLITE_CONSOLE
bool "Support for console on Xilinx uartlite serial port"
depends on SERIAL_UARTLITE=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say Y here if you wish to use a Xilinx uartlite as the system
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).
config SERIAL_UARTLITE_NR_UARTS
int "Maximum number of uartlite serial ports"
depends on SERIAL_UARTLITE
range 1 256
default 1
help
Set this to the number of uartlites in your system, or the number
you think you might implement.
If maximum number of uartlite serial ports is more than 4, then the
driver uses dynamic allocation instead of static allocation for major
number.
config SERIAL_SUNCORE
bool
depends on SPARC
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
default y
config SERIAL_SUNZILOG
tristate "Sun Zilog8530 serial support"
depends on SPARC
help
This driver supports the Zilog8530 serial ports found on many Sparc
systems. Say Y or M if you want to be able to these serial ports.
config SERIAL_SUNZILOG_CONSOLE
bool "Console on Sun Zilog8530 serial port"
depends on SERIAL_SUNZILOG=y
help
If you would like to be able to use the Zilog8530 serial port
on your Sparc system as the console, you can do so by answering
Y to this option.
config SERIAL_SUNSU
tristate "Sun SU serial support"
depends on SPARC && PCI
help
This driver supports the 8250 serial ports that run the keyboard and
mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able
to these serial ports.
config SERIAL_SUNSU_CONSOLE
bool "Console on Sun SU serial port"
depends on SERIAL_SUNSU=y
help
If you would like to be able to use the SU serial port
on your Sparc system as the console, you can do so by answering
Y to this option.
config SERIAL_MUX
tristate "Serial MUX support"
depends on GSC
select SERIAL_CORE
default y
help
Saying Y here will enable the hardware MUX serial driver for
the Nova, K class systems and D class with a 'remote control card'.
The hardware MUX is not 8250/16550 compatible therefore the
/dev/ttyB0 device is shared between the Serial MUX and the PDC
software console. The following steps need to be completed to use
the Serial MUX:
1. create the device entry (mknod /dev/ttyB0 c 11 0)
2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0
3. Add device ttyB0 to /etc/securetty (if you want to log on as
root on this console.)
4. Change the kernel command console parameter to: console=ttyB0
config SERIAL_MUX_CONSOLE
bool "Support for console on serial MUX"
depends on SERIAL_MUX=y
select SERIAL_CORE_CONSOLE
default y
config SERIAL_SUNSAB
tristate "Sun Siemens SAB82532 serial support"
depends on SPARC && PCI
help
This driver supports the Siemens SAB82532 DUSCC serial ports on newer
(PCI) UltraSPARC systems. Say Y or M if you want to be able to these
serial ports.
config SERIAL_SUNSAB_CONSOLE
bool "Console on Sun Siemens SAB82532 serial port"
depends on SERIAL_SUNSAB=y
help
If you would like to be able to use the SAB82532 serial port
on your Sparc system as the console, you can do so by answering
Y to this option.
config SERIAL_SUNHV
bool "Sun4v Hypervisor Console support"
depends on SPARC64
help
This driver supports the console device found on SUN4V Sparc
systems. Say Y if you want to be able to use this device.
config SERIAL_IP22_ZILOG
tristate "SGI Zilog8530 serial support"
depends on SGI_HAS_ZILOG
select SERIAL_CORE
help
This driver supports the Zilog8530 serial ports found on SGI
systems. Say Y or M if you want to be able to these serial ports.
config SERIAL_IP22_ZILOG_CONSOLE
bool "Console on SGI Zilog8530 serial port"
depends on SERIAL_IP22_ZILOG=y
select SERIAL_CORE_CONSOLE
config SERIAL_SH_SCI
tristate "SuperH SCI(F) serial port support"
depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
config SERIAL_SH_SCI_NR_UARTS
int "Maximum number of SCI(F) serial ports" if EXPERT
range 1 64 if 64BIT
range 1 32 if !64BIT
depends on SERIAL_SH_SCI
default "10" if SUPERH
default "18" if ARCH_RENESAS
default "2"
config SERIAL_SH_SCI_CONSOLE
bool "Support for console on SuperH SCI(F)" if EXPERT
depends on SERIAL_SH_SCI=y
select SERIAL_CORE_CONSOLE
default y
config SERIAL_SH_SCI_EARLYCON
bool "Support for early console on SuperH SCI(F)" if EXPERT
depends on SERIAL_SH_SCI=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
default ARCH_RENESAS
config SERIAL_SH_SCI_DMA
bool "DMA support" if EXPERT
depends on SERIAL_SH_SCI && DMA_ENGINE
default ARCH_RENESAS
config SERIAL_HS_LPC32XX
tristate "LPC32XX high speed serial port support"
depends on ARCH_LPC32XX || COMPILE_TEST
depends on OF
select SERIAL_CORE
help
Support for the LPC32XX high speed serial ports (up to 900kbps).
Those are UARTs completely different from the Standard UARTs on the
LPC32XX SoC.
Choose M or Y here to build this driver.
config SERIAL_HS_LPC32XX_CONSOLE
bool "Enable LPC32XX high speed UART serial console"
depends on SERIAL_HS_LPC32XX=y
select SERIAL_CORE_CONSOLE
help
If you would like to be able to use one of the high speed serial
ports on the LPC32XX as the console, you can do so by answering
Y to this option.
config SERIAL_CORE
tristate
config SERIAL_CORE_CONSOLE
bool
config CONSOLE_POLL
bool
config SERIAL_MCF
bool "Coldfire serial support"
depends on COLDFIRE
select SERIAL_CORE
help
This serial driver supports the Freescale Coldfire serial ports.
config SERIAL_MCF_BAUDRATE
int "Default baudrate for Coldfire serial ports"
depends on SERIAL_MCF
default 19200
help
This setting lets you define what the default baudrate is for the
ColdFire serial ports. The usual default varies from board to board,
and this setting is a way of catering for that.
config SERIAL_MCF_CONSOLE
bool "Coldfire serial console support"
depends on SERIAL_MCF
select SERIAL_CORE_CONSOLE
help
Enable a ColdFire internal serial port to be the system console.
config SERIAL_PMACZILOG
tristate "Mac or PowerMac z85c30 ESCC support"
depends on (M68K && MAC) || PPC_PMAC
select SERIAL_CORE
help
This driver supports the Zilog z85C30 serial ports found on
(Power)Mac machines.
Say Y or M if you want to be able to these serial ports.
config SERIAL_PMACZILOG_TTYS
bool "Use ttySn device nodes for Zilog z85c30"
depends on SERIAL_PMACZILOG
help
The pmac_zilog driver for the z85C30 chip on many powermacs
historically used the device numbers for /dev/ttySn. The
8250 serial port driver also uses these numbers, which means
the two drivers being unable to coexist; you could not use
both z85C30 and 8250 type ports at the same time.
If this option is not selected, the pmac_zilog driver will
use the device numbers allocated for /dev/ttyPZn. This allows
the pmac_zilog and 8250 drivers to co-exist, but may cause
existing userspace setups to break. Programs that need to
access the built-in serial ports on powermacs will need to
be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
If you enable this option, any z85c30 ports in the system will
be registered as ttyS0 onwards as in the past, and you will be
unable to use the 8250 module for PCMCIA or other 16C550-style
UARTs.
Say N unless you need the z85c30 ports on your (Power)Mac
to appear as /dev/ttySn.
config SERIAL_PMACZILOG_CONSOLE
bool "Console on Mac or PowerMac z85c30 serial port"
depends on SERIAL_PMACZILOG=y
select SERIAL_CORE_CONSOLE
help
If you would like to be able to use the z85c30 serial port
on your (Power)Mac as the console, you can do so by answering
Y to this option.
config SERIAL_CPM
tristate "CPM SCC/SMC serial port support"
depends on CPM2 || CPM1
select SERIAL_CORE
help
This driver supports the SCC and SMC serial ports on Motorola
embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)
config SERIAL_CPM_CONSOLE
bool "Support for console on CPM SCC/SMC serial port"
depends on SERIAL_CPM=y
select SERIAL_CORE_CONSOLE
help
Say Y here if you wish to use a SCC or SMC CPM UART as the system
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).
Even if you say Y here, the currently visible framebuffer console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyCPM0". (Try "man bootparam" or see the documentation of
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
config SERIAL_PIC32
tristate "Microchip PIC32 serial support"
depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
select SERIAL_CORE
help
If you have a PIC32, this driver supports the serial ports.
Say Y or M to use PIC32 serial ports, otherwise say N. Note that
to use a serial port as a console, this must be included in kernel and
not as a module.
config SERIAL_PIC32_CONSOLE
bool "PIC32 serial console support"
depends on SERIAL_PIC32=y
select SERIAL_CORE_CONSOLE
help
If you have a PIC32, this driver supports the putting a console on one
of the serial ports.
Say Y to use the PIC32 console, otherwise say N.
config SERIAL_MPC52xx
tristate "Freescale MPC52xx/MPC512x family PSC serial support"
depends on PPC_MPC52xx || PPC_MPC512x
select SERIAL_CORE
help
This driver supports MPC52xx and MPC512x PSC serial ports. If you would
like to use them, you must answer Y or M to this option. Note that
for use as console, it must be included in kernel and not as a
module.
config SERIAL_MPC52xx_CONSOLE
bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
depends on SERIAL_MPC52xx=y
select SERIAL_CORE_CONSOLE
help
Select this options if you'd like to use one of the PSC serial port
of the Freescale MPC52xx family as a console.
config SERIAL_MPC52xx_CONSOLE_BAUD
int "Freescale MPC52xx/MPC512x family PSC serial port baud"
depends on SERIAL_MPC52xx_CONSOLE=y
default "9600"
help
Select the MPC52xx console baud rate.
This value is only used if the bootloader doesn't pass in the
console baudrate
config SERIAL_ICOM
tristate "IBM Multiport Serial Adapter"
depends on PCI
depends on PPC_PSERIES || COMPILE_TEST
select SERIAL_CORE
select FW_LOADER
help
This driver is for a family of multiport serial adapters
including 2 port RVX, 2 port internal modem, 4 port internal
modem and a split 1 port RVX and 1 port internal modem.
This driver can also be built as a module. If so, the module
will be called icom.
config SERIAL_TXX9
bool "TMPTX39XX/49XX SIO support"
depends on HAS_TXX9_SERIAL
select SERIAL_CORE
default y
config HAS_TXX9_SERIAL
bool
config SERIAL_TXX9_NR_UARTS
int "Maximum number of TMPTX39XX/49XX SIO ports"
depends on SERIAL_TXX9
default "6"
config SERIAL_TXX9_CONSOLE
bool "TMPTX39XX/49XX SIO Console support"
depends on SERIAL_TXX9=y
select SERIAL_CORE_CONSOLE
config SERIAL_TXX9_STDSERIAL
bool "TX39XX/49XX SIO act as standard serial"
depends on !SERIAL_8250 && SERIAL_TXX9
config SERIAL_JSM
tristate "Digi International NEO and Classic PCI Support"
depends on PCI
select SERIAL_CORE
help
This is a driver for Digi International's Neo and Classic series
of cards which provide multiple serial ports. You would need
something like this to connect more than two modems to your Linux
box, for instance in order to become a dial-in server. This driver
supports PCI boards only.
If you have a card like this, say Y here, otherwise say N.
To compile this driver as a module, choose M here: the
module will be called jsm.
config SERIAL_MSM
tristate "MSM on-chip serial port support"
depends on ARCH_QCOM || COMPILE_TEST
select SERIAL_CORE
config SERIAL_MSM_CONSOLE
bool "MSM serial console support"
depends on SERIAL_MSM=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
config SERIAL_QCOM_GENI
tristate "QCOM on-chip GENI based serial port support"
depends on ARCH_QCOM || COMPILE_TEST
depends on QCOM_GENI_SE
select SERIAL_CORE
config SERIAL_QCOM_GENI_CONSOLE
bool "QCOM GENI Serial Console support"
depends on SERIAL_QCOM_GENI
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Serial console driver for Qualcomm Technologies Inc's GENI based
QUP hardware.
config SERIAL_VT8500
bool "VIA VT8500 on-chip serial port support"
depends on ARCH_VT8500 || COMPILE_TEST
select SERIAL_CORE
config SERIAL_VT8500_CONSOLE
bool "VIA VT8500 serial console support"
depends on SERIAL_VT8500=y
select SERIAL_CORE_CONSOLE
config SERIAL_OMAP
tristate "OMAP serial port support"
depends on (ARCH_OMAP2PLUS && !SERIAL_8250_OMAP) || COMPILE_TEST
select SERIAL_CORE
help
If you have a machine based on an Texas Instruments OMAP CPU you
can enable its onboard serial ports by enabling this option.
By enabling this option you take advantage of dma feature available
with the omap-serial driver. DMA support can be enabled from platform
data.
config SERIAL_OMAP_CONSOLE
bool "Console on OMAP serial port"
depends on SERIAL_OMAP=y
select SERIAL_CORE_CONSOLE
help
Select this option if you would like to use omap serial port as
console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttyOx". (Try "man bootparam" or see the documentation of
your boot loader about how to pass options to the kernel at
boot time.)
config SERIAL_SIFIVE
tristate "SiFive UART support"
depends on OF
default ARCH_SIFIVE || ARCH_CANAAN
select SERIAL_CORE
help
Select this option if you are building a kernel for a device that
contains a SiFive UART IP block. This type of UART is present on
SiFive FU540 SoCs, among others.
config SERIAL_SIFIVE_CONSOLE
bool "Console on SiFive UART"
depends on SERIAL_SIFIVE=y
default ARCH_SIFIVE || ARCH_CANAAN
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Select this option if you would like to use a SiFive UART as the
system console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySIFx". (Try "man bootparam" or see the documentation of
your boot loader about how to pass options to the kernel at
boot time.)
config SERIAL_LANTIQ
tristate "Lantiq serial driver"
depends on (LANTIQ || X86) || COMPILE_TEST
select SERIAL_CORE
help
Support for UART on Lantiq and Intel SoCs.
To compile this driver as a module, select M here. The
module will be called lantiq.
config SERIAL_LANTIQ_CONSOLE
bool "Console on Lantiq UART"
depends on SERIAL_LANTIQ=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Select this option if you would like to use a Lantiq UART as the
system console.
config SERIAL_QE
tristate "Freescale QUICC Engine serial port support"
depends on QUICC_ENGINE
select SERIAL_CORE
select FW_LOADER
help
This driver supports the QE serial ports on Freescale embedded
PowerPC that contain a QUICC Engine.
config SERIAL_SCCNXP
tristate "SCCNXP serial port support"
select SERIAL_CORE
help
This selects support for an advanced UART from NXP (Philips).
Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
SC28L202, SCC68681 and SCC68692.
config SERIAL_SCCNXP_CONSOLE
bool "Console on SCCNXP serial port"
depends on SERIAL_SCCNXP=y
select SERIAL_CORE_CONSOLE
help
Support for console on SCCNXP serial ports.
config SERIAL_SC16IS7XX_CORE
tristate
config SERIAL_SC16IS7XX
tristate "SC16IS7xx serial support"
select SERIAL_CORE
depends on (SPI_MASTER && !I2C) || I2C
help
This selects support for SC16IS7xx serial ports.
Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
SC16IS760 and SC16IS762. Select supported buses using options below.
config SERIAL_SC16IS7XX_I2C
bool "SC16IS7xx for I2C interface"
depends on SERIAL_SC16IS7XX
depends on I2C
select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
select REGMAP_I2C if I2C
default y
help
Enable SC16IS7xx driver on I2C bus,
If required say y, and say n to i2c if not required,
Enabled by default to support oldconfig.
You must select at least one bus for the driver to be built.
config SERIAL_SC16IS7XX_SPI
bool "SC16IS7xx for spi interface"
depends on SERIAL_SC16IS7XX
depends on SPI_MASTER
select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
select REGMAP_SPI if SPI_MASTER
help
Enable SC16IS7xx driver on SPI bus,
If required say y, and say n to spi if not required,
This is additional support to existing driver.
You must select at least one bus for the driver to be built.
config SERIAL_TIMBERDALE
tristate "Support for timberdale UART"
select SERIAL_CORE
depends on X86_32 || COMPILE_TEST
help
Add support for UART controller on timberdale.
config SERIAL_BCM63XX
tristate "Broadcom BCM63xx/BCM33xx UART support"
select SERIAL_CORE
depends on ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
default ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC
help
This enables the driver for the onchip UART core found on
the following chipsets:
BCM33xx (cable modem)
BCM63xx/BCM63xxx (DSL)
BCM68xx (PON)
BCM7xxx (STB) - DOCSIS console
config SERIAL_BCM63XX_CONSOLE
bool "Console on BCM63xx serial port"
depends on SERIAL_BCM63XX=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
If you have enabled the serial port on the BCM63xx CPU
you can make it the console by answering Y to this option.
config SERIAL_GRLIB_GAISLER_APBUART
tristate "GRLIB APBUART serial support"
depends on OF && SPARC
select SERIAL_CORE
help
Add support for the GRLIB APBUART serial port.
config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
bool "Console on GRLIB APBUART serial port"
depends on SERIAL_GRLIB_GAISLER_APBUART=y
select SERIAL_CORE_CONSOLE
help
Support for running a console on the GRLIB APBUART
config SERIAL_ALTERA_JTAGUART
tristate "Altera JTAG UART support"
select SERIAL_CORE
help
This driver supports the Altera JTAG UART port.
config SERIAL_ALTERA_JTAGUART_CONSOLE
bool "Altera JTAG UART console support"
depends on SERIAL_ALTERA_JTAGUART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Enable a Altera JTAG UART port to be the system console.
config SERIAL_ALTERA_JTAGUART_CONSOLE_BYPASS
bool "Bypass output when no connection"
depends on SERIAL_ALTERA_JTAGUART_CONSOLE
select SERIAL_CORE_CONSOLE
help
Bypass console output and keep going even if there is no
JTAG terminal connection with the host.
config SERIAL_ALTERA_UART
tristate "Altera UART support"
select SERIAL_CORE
help
This driver supports the Altera softcore UART port.
config SERIAL_ALTERA_UART_MAXPORTS
int "Maximum number of Altera UART ports"
depends on SERIAL_ALTERA_UART
default 4
help
This setting lets you define the maximum number of the Altera
UART ports. The usual default varies from board to board, and
this setting is a way of catering for that.
config SERIAL_ALTERA_UART_BAUDRATE
int "Default baudrate for Altera UART ports"
depends on SERIAL_ALTERA_UART
default 115200
help
This setting lets you define what the default baudrate is for the
Altera UART ports. The usual default varies from board to board,
and this setting is a way of catering for that.
config SERIAL_ALTERA_UART_CONSOLE
bool "Altera UART console support"
depends on SERIAL_ALTERA_UART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Enable a Altera UART port to be the system console.
config SERIAL_PCH_UART
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
select SERIAL_CORE
help
This driver is for PCH(Platform controller Hub) UART of Intel EG20T
which is an IOH(Input/Output Hub) for x86 embedded processor.
Enabling PCH_DMA, this PCH UART works as DMA mode.
This driver also can be used for LAPIS Semiconductor IOH(Input/
Output Hub), ML7213, ML7223 and ML7831.
ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
for MP(Media Phone) use and ML7831 IOH is for general purpose use.
ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
config SERIAL_PCH_UART_CONSOLE
bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
depends on SERIAL_PCH_UART=y
select SERIAL_CORE_CONSOLE
help
Say Y here if you wish to use the PCH UART as the system console
(the system console is the device which receives all kernel messages and
warnings and which allows logins in single user mode).
config SERIAL_MXS_AUART
tristate "MXS AUART support"
depends on ARCH_MXS || MACH_ASM9260 || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
This driver supports the MXS and Alphascale ASM9260 Application
UART (AUART) port.
config SERIAL_MXS_AUART_CONSOLE
bool "MXS AUART console support"
depends on SERIAL_MXS_AUART=y
select SERIAL_CORE_CONSOLE
help
Enable a MXS AUART port to be the system console.
config SERIAL_XILINX_PS_UART
tristate "Cadence (Xilinx Zynq) UART support"
depends on OF
select SERIAL_CORE
help
This driver supports the Cadence UART. It is found e.g. in Xilinx
Zynq.
config SERIAL_XILINX_PS_UART_CONSOLE
bool "Cadence UART console support"
depends on SERIAL_XILINX_PS_UART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Enable a Cadence UART port to be the system console.
config SERIAL_AR933X
tristate "AR933X serial port support"
depends on (HAVE_CLK && ATH79) || (MIPS && COMPILE_TEST)
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
If you have an Atheros AR933X SOC based board and want to use the
built-in UART of the SoC, say Y to this option.
To compile this driver as a module, choose M here: the
module will be called ar933x_uart.
config SERIAL_AR933X_CONSOLE
bool "Console on AR933X serial port"
depends on SERIAL_AR933X=y
select SERIAL_CORE_CONSOLE
help
Enable a built-in UART port of the AR933X to be the system console.
config SERIAL_AR933X_NR_UARTS
int "Maximum number of AR933X serial ports"
depends on SERIAL_AR933X
default "2"
help
Set this to the number of serial ports you want the driver
to support.
config SERIAL_MPS2_UART_CONSOLE
bool "MPS2 UART console support"
depends on SERIAL_MPS2_UART
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
config SERIAL_MPS2_UART
bool "MPS2 UART port"
depends on ARCH_MPS2 || COMPILE_TEST
select SERIAL_CORE
help
This driver support the UART ports on ARM MPS2.
config SERIAL_ARC
tristate "ARC UART driver support"
select SERIAL_CORE
help
Driver for on-chip UART for ARC(Synopsys) for the legacy
FPGA Boards (ML50x/ARCAngel4)
config SERIAL_ARC_CONSOLE
bool "Console on ARC UART"
depends on SERIAL_ARC=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Enable system Console on ARC UART
config SERIAL_ARC_NR_PORTS
int "Number of ARC UART ports"
depends on SERIAL_ARC
range 1 3
default "1"
help
Set this to the number of serial ports you want the driver
to support.
config SERIAL_RP2
tristate "Comtrol RocketPort EXPRESS/INFINITY support"
depends on PCI
select SERIAL_CORE
help
This driver supports the Comtrol RocketPort EXPRESS and
RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
These adapters use a "RocketPort 2" ASIC that is not compatible
with the original RocketPort driver (CONFIG_ROCKETPORT).
To compile this driver as a module, choose M here: the
module will be called rp2.
If you want to compile this driver into the kernel, say Y here. If
you don't have a suitable RocketPort card installed, say N.
config SERIAL_RP2_NR_UARTS
int "Maximum number of RocketPort EXPRESS/INFINITY ports"
depends on SERIAL_RP2
default "32"
help
If multiple cards are present, the default limit of 32 ports may
need to be increased.
config SERIAL_FSL_LPUART
tristate "Freescale lpuart serial port support"
depends on HAS_DMA
select SERIAL_CORE
help
Support for the on-chip lpuart on some Freescale SOCs.
config SERIAL_FSL_LPUART_CONSOLE
bool "Console on Freescale lpuart serial port"
depends on SERIAL_FSL_LPUART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
If you have enabled the lpuart serial port on the Freescale SoCs,
you can make it the console by answering Y to this option.
config SERIAL_FSL_LINFLEXUART
tristate "Freescale LINFlexD UART serial port support"
depends on PRINTK
select SERIAL_CORE
help
Support for the on-chip LINFlexD UART on some Freescale SOCs.
config SERIAL_FSL_LINFLEXUART_CONSOLE
bool "Console on Freescale LINFlexD UART serial port"
depends on SERIAL_FSL_LINFLEXUART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
If you have enabled the LINFlexD UART serial port on the Freescale
SoCs, you can make it the console by answering Y to this option.
config SERIAL_CONEXANT_DIGICOLOR
tristate "Conexant Digicolor CX92xxx USART serial port support"
depends on OF
select SERIAL_CORE
help
Support for the on-chip USART on Conexant Digicolor SoCs.
config SERIAL_CONEXANT_DIGICOLOR_CONSOLE
bool "Console on Conexant Digicolor serial port"
depends on SERIAL_CONEXANT_DIGICOLOR=y
select SERIAL_CORE_CONSOLE
help
If you have enabled the USART serial port on Conexant Digicolor
SoCs, you can make it the console by answering Y to this option.
config SERIAL_ST_ASC
tristate "ST ASC serial port support"
select SERIAL_CORE
depends on ARM || COMPILE_TEST
help
This driver is for the on-chip Asynchronous Serial Controller on
STMicroelectronics STi SoCs.
ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
It support all industry standard baud rates.
If unsure, say N.
config SERIAL_ST_ASC_CONSOLE
bool "Support for console on ST ASC"
depends on SERIAL_ST_ASC=y
select SERIAL_CORE_CONSOLE
config SERIAL_MEN_Z135
tristate "MEN 16z135 Support"
select SERIAL_CORE
depends on MCB
help
Say yes here to enable support for the MEN 16z135 High Speed UART IP-Core
on a MCB carrier.
This driver can also be build as a module. If so, the module will be called
men_z135_uart.ko
config SERIAL_SPRD
tristate "Support for Spreadtrum serial"
select SERIAL_CORE
depends on COMMON_CLK
help
This enables the driver for the Spreadtrum's serial.
config SERIAL_SPRD_CONSOLE
bool "Spreadtrum UART console support"
depends on SERIAL_SPRD=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Support for early debug console using Spreadtrum's serial. This enables
the console before standard serial driver is probed. This is enabled
with "earlycon" on the kernel command line. The console is
enabled when early_param is processed.
config SERIAL_STM32
tristate "STMicroelectronics STM32 serial port support"
select SERIAL_CORE
depends on ARCH_STM32 || COMPILE_TEST
select SERIAL_MCTRL_GPIO if GPIOLIB
help
This driver is for the on-chip Serial Controller on
STMicroelectronics STM32 MCUs.
USART supports Rx & Tx functionality.
It support all industry standard baud rates.
If unsure, say N.
config SERIAL_STM32_CONSOLE
bool "Support for console on STM32"
depends on SERIAL_STM32=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
config SERIAL_MVEBU_UART
bool "Marvell EBU serial port support"
depends on ARCH_MVEBU || COMPILE_TEST
depends on COMMON_CLK
select SERIAL_CORE
help
This driver is for Marvell EBU SoC's UART. If you have a machine
based on the Armada-3700 SoC and wish to use the on-board serial
port,
say 'Y' here.
Otherwise, say 'N'.
config SERIAL_MVEBU_CONSOLE
bool "Console on Marvell EBU serial port"
depends on SERIAL_MVEBU_UART
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
default y
help
Say 'Y' here if you wish to use Armada-3700 UART as the system console.
(the system console is the device which receives all kernel messages
and warnings and which allows logins in single user mode)
Otherwise, say 'N'.
config SERIAL_OWL
tristate "Actions Semi Owl serial port support"
depends on ARCH_ACTIONS || COMPILE_TEST
select SERIAL_CORE
help
This driver is for Actions Semiconductor S500/S900 SoC's UART.
Say 'Y' here if you wish to use the on-board serial port.
Otherwise, say 'N'.
config SERIAL_OWL_CONSOLE
bool "Console on Actions Semi Owl serial port"
depends on SERIAL_OWL=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
default y
help
Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
as the system console.
config SERIAL_RDA
bool "RDA Micro serial port support"
depends on ARCH_RDA || COMPILE_TEST
select SERIAL_CORE
help
This driver is for RDA8810PL SoC's UART.
Say 'Y' here if you wish to use the on-board serial port.
Otherwise, say 'N'.
config SERIAL_RDA_CONSOLE
bool "Console on RDA Micro serial port"
depends on SERIAL_RDA=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
default y
help
Say 'Y' here if you wish to use the RDA8810PL UART as the system
console. Only earlycon is implemented currently.
config SERIAL_MILBEAUT_USIO
tristate "Milbeaut USIO/UART serial port support"
depends on ARCH_MILBEAUT || (COMPILE_TEST && OF)
default ARCH_MILBEAUT
select SERIAL_CORE
help
This selects the USIO/UART IP found in Socionext Milbeaut SoCs.
config SERIAL_MILBEAUT_USIO_PORTS
int "Maximum number of CSIO/UART ports (1-8)"
range 1 8
depends on SERIAL_MILBEAUT_USIO
default "4"
config SERIAL_MILBEAUT_USIO_CONSOLE
bool "Support for console on MILBEAUT USIO/UART serial port"
depends on SERIAL_MILBEAUT_USIO=y
default y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say 'Y' here if you wish to use a USIO/UART of Socionext Milbeaut
SoCs as the system console (the system console is the device which
receives all kernel messages and warnings and which allows logins in
single user mode).
config SERIAL_LITEUART
tristate "LiteUART serial port support"
depends on HAS_IOMEM
depends on OF
depends on LITEX || COMPILE_TEST
select SERIAL_CORE
help
This driver is for the FPGA-based LiteUART serial controller from LiteX
SoC builder.
Say 'Y' or 'M' here if you wish to use the LiteUART serial controller.
Otherwise, say 'N'.
config SERIAL_LITEUART_MAX_PORTS
int "Maximum number of LiteUART ports"
depends on SERIAL_LITEUART
default "1"
help
Set this to the maximum number of serial ports you want the driver
to support.
config SERIAL_LITEUART_CONSOLE
bool "LiteUART serial port console support"
depends on SERIAL_LITEUART=y
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Say 'Y' or 'M' here if you wish to use the FPGA-based LiteUART serial
controller from LiteX SoC builder as the system console
(the system console is the device which receives all kernel messages
and warnings and which allows logins in single user mode).
Otherwise, say 'N'.
config SERIAL_SUNPLUS
tristate "Sunplus UART support"
depends on ARCH_SUNPLUS || COMPILE_TEST
select SERIAL_CORE
help
Select this option if you would like to use Sunplus serial port on
Sunplus SoC SP7021.
If you enable this option, Sunplus serial ports in the system will
be registered as ttySUPx.
This driver can also be built as a module. If so, the module will be
called sunplus-uart.
config SERIAL_SUNPLUS_CONSOLE
bool "Console on Sunplus UART"
depends on SERIAL_SUNPLUS
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Select this option if you would like to use a Sunplus UART as the
system console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySUPx".
config SERIAL_NUVOTON_MA35D1
tristate "Nuvoton MA35D1 family UART support"
depends on ARCH_MA35 || COMPILE_TEST
select SERIAL_CORE
help
This driver supports Nuvoton MA35D1 family UART ports. If you would
like to use them, you must answer Y or M to this option. Note that
for use as console, it must be included in kernel and not as a
module. If you enable this option, Ma35D1 serial ports in the system
will be registered as ttyNVTx.
config SERIAL_NUVOTON_MA35D1_CONSOLE
bool "Console on a Nuvotn MA35D1 family UART port"
depends on SERIAL_NUVOTON_MA35D1=y
select SERIAL_CORE_CONSOLE
help
Select this options if you'd like to use the UART port0 of the
Nuvoton MA35D1 family as a console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default,
but you can alter that using a kernel command line option such as
"console=ttyNVTx".
config SERIAL_ESP32
tristate "Espressif ESP32 UART support"
depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Driver for the UART controllers of the Espressif ESP32xx SoCs.
When earlycon option is enabled the following kernel command line
snippets may be used:
earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000
earlycon=esp32uart,mmio32,0x3ff40000,115200n8
config SERIAL_ESP32_ACM
tristate "Espressif ESP32 USB ACM gadget support"
depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF)
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
help
Driver for the CDC ACM gadget controller of the Espressif ESP32S3
SoCs that share separate USB controller with the JTAG adapter.
When earlycon option is enabled the following kernel command line
snippet may be used:
earlycon=esp32s3acm,mmio32,0x60038000
endmenu
config SERIAL_MCTRL_GPIO
tristate
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