Current File : //proc/thread-self/root/usr/src/linux-headers-5.15.0-125/drivers/i2c/muxes/Kconfig
# SPDX-License-Identifier: GPL-2.0-only
#
# Multiplexer I2C chip drivers configuration
#
menu "Multiplexer I2C Chip support"
depends on I2C_MUX
config I2C_ARB_GPIO_CHALLENGE
tristate "GPIO-based I2C arbitration"
depends on GPIOLIB || COMPILE_TEST
depends on OF || COMPILE_TEST
help
If you say yes to this option, support will be included for an
I2C multimaster arbitration scheme using GPIOs and a challenge &
response mechanism where masters have to claim the bus by asserting
a GPIO.
This driver can also be built as a module. If so, the module
will be called i2c-arb-gpio-challenge.
config I2C_MUX_GPIO
tristate "GPIO-based I2C multiplexer"
depends on GPIOLIB
help
If you say yes to this option, support will be included for a
GPIO based I2C multiplexer. This driver provides access to
I2C busses connected through a MUX, which is controlled
through GPIO pins.
This driver can also be built as a module. If so, the module
will be called i2c-mux-gpio.
config I2C_MUX_GPMUX
tristate "General Purpose I2C multiplexer"
select MULTIPLEXER
depends on OF || COMPILE_TEST
help
If you say yes to this option, support will be included for a
general purpose I2C multiplexer. This driver provides access to
I2C busses connected through a MUX, which in turn is controlled
by a MUX-controller from the MUX subsystem.
This driver can also be built as a module. If so, the module
will be called i2c-mux-gpmux.
config I2C_MUX_LTC4306
tristate "LTC LTC4306/5 I2C multiplexer"
select GPIOLIB
select REGMAP_I2C
help
If you say yes here you get support for the Analog Devices
LTC4306 or LTC4305 I2C mux/switch devices.
This driver can also be built as a module. If so, the module
will be called i2c-mux-ltc4306.
config I2C_MUX_PCA9541
tristate "NXP PCA9541 I2C Master Selector"
help
If you say yes here you get support for the NXP PCA9541
I2C Master Selector.
This driver can also be built as a module. If so, the module
will be called i2c-mux-pca9541.
config I2C_MUX_PCA954x
tristate "NXP PCA954x and PCA984x I2C Mux/switches"
depends on GPIOLIB || COMPILE_TEST
help
If you say yes here you get support for the NXP PCA954x
and PCA984x I2C mux/switch devices.
This driver can also be built as a module. If so, the module
will be called i2c-mux-pca954x.
config I2C_MUX_PINCTRL
tristate "pinctrl-based I2C multiplexer"
depends on PINCTRL
depends on OF || COMPILE_TEST
help
If you say yes to this option, support will be included for an I2C
multiplexer that uses the pinctrl subsystem, i.e. pin multiplexing.
This is useful for SoCs whose I2C module's signals can be routed to
different sets of pins at run-time.
This driver can also be built as a module. If so, the module will be
called i2c-mux-pinctrl.
config I2C_MUX_REG
tristate "Register-based I2C multiplexer"
depends on HAS_IOMEM
help
If you say yes to this option, support will be included for a
register based I2C multiplexer. This driver provides access to
I2C busses connected through a MUX, which is controlled
by a single register.
This driver can also be built as a module. If so, the module
will be called i2c-mux-reg.
config I2C_DEMUX_PINCTRL
tristate "pinctrl-based I2C demultiplexer"
depends on PINCTRL && OF
select OF_DYNAMIC
help
If you say yes to this option, support will be included for an I2C
demultiplexer that uses the pinctrl subsystem. This is useful if you
want to change the I2C master at run-time depending on features.
config I2C_MUX_MLXCPLD
tristate "Mellanox CPLD based I2C multiplexer"
help
If you say yes to this option, support will be included for a
CPLD based I2C multiplexer. This driver provides access to
I2C busses connected through a MUX, which is controlled
by a CPLD register.
This driver can also be built as a module. If so, the module
will be called i2c-mux-mlxcpld.
endmenu
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