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92ed1a76ca
Add an i2c mux driver providing access to i2c bus segments using a hardware MUX sitting on a master bus and controlled through gpio pins. E.G. something like: ---------- ---------- Bus segment 1 - - - - - | | SCL/SDA | |-------------- | | | |------------| | | | | | Bus segment 2 | | | Linux | GPIO 1..N | MUX |--------------- Devices | |------------| | | | | | | | Bus segment M | | | |---------------| | ---------- ---------- - - - - - SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M according to the settings of the GPIO pins 1..N. Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
41 lines
1.0 KiB
Plaintext
41 lines
1.0 KiB
Plaintext
#
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# Multiplexer I2C chip drivers configuration
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#
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menu "Multiplexer I2C Chip support"
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depends on I2C_MUX
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config I2C_MUX_GPIO
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tristate "GPIO-based I2C multiplexer"
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depends on GENERIC_GPIO
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help
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If you say yes to this option, support will be included for a
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GPIO based I2C multiplexer. This driver provides access to
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I2C busses connected through a MUX, which is controlled
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through GPIO pins.
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This driver can also be built as a module. If so, the module
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will be called gpio-i2cmux.
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config I2C_MUX_PCA9541
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tristate "NXP PCA9541 I2C Master Selector"
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depends on EXPERIMENTAL
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help
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If you say yes here you get support for the NXP PCA9541
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I2C Master Selector.
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This driver can also be built as a module. If so, the module
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will be called pca9541.
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config I2C_MUX_PCA954x
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tristate "Philips PCA954x I2C Mux/switches"
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depends on EXPERIMENTAL
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help
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If you say yes here you get support for the Philips PCA954x
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I2C mux/switch devices.
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This driver can also be built as a module. If so, the module
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will be called pca954x.
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endmenu
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