mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 18:46:47 +07:00
ae58d1e406
This is useful for SoCs whose I2C module's signals can be routed to
different sets of pins at run-time, using the pinctrl API.
+-----+ +-----+
| dev | | dev |
+------------------------+ +-----+ +-----+
| SoC | | |
| /----|------+--------+
| +---+ +------+ | child bus A, on first set of pins
| |I2C|---|Pinmux| |
| +---+ +------+ | child bus B, on second set of pins
| \----|------+--------+--------+
| | | | |
+------------------------+ +-----+ +-----+ +-----+
| dev | | dev | | dev |
+-----+ +-----+ +-----+
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
53 lines
1.5 KiB
Plaintext
53 lines
1.5 KiB
Plaintext
#
|
|
# Multiplexer I2C chip drivers configuration
|
|
#
|
|
|
|
menu "Multiplexer I2C Chip support"
|
|
depends on I2C_MUX
|
|
|
|
config I2C_MUX_GPIO
|
|
tristate "GPIO-based I2C multiplexer"
|
|
depends on GENERIC_GPIO
|
|
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_PCA9541
|
|
tristate "NXP PCA9541 I2C Master Selector"
|
|
depends on EXPERIMENTAL
|
|
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 "Philips PCA954x I2C Mux/switches"
|
|
depends on EXPERIMENTAL
|
|
help
|
|
If you say yes here you get support for the Philips PCA954x
|
|
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
|
|
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 pinctrl-i2cmux.
|
|
|
|
endmenu
|