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f7c9839a61
Add support for the following Maxim chips using the existing PCA954x driver: - MAX7356 - MAX7357 - MAX7358 - MAX7367 - MAX7368 - MAX7369 All added Maxim chips behave like the PCA954x, where a single SMBUS byte write selects up to 8 channels to be bridged to the primary bus. Tested using the MAX7358. Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com> Reviewed-by: Heiko Schocher <hs@denx.de>
51 lines
1.9 KiB
Text
51 lines
1.9 KiB
Text
config I2C_MUX
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bool "Support I2C multiplexers"
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depends on DM_I2C
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help
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This enables I2C buses to be multiplexed, so that you can select
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one of several buses using some sort of control mechanism. The
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bus select is handled automatically when that bus is accessed,
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using a suitable I2C MUX driver.
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config SPL_I2C_MUX
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bool "Support I2C multiplexers on SPL"
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depends on SPL && I2C_MUX
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help
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This enables I2C buses to be multiplexed, so that you can select
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one of several buses using some sort of control mechanism. The
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bus select is handled automatically when that bus is accessed,
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using a suitable I2C MUX driver.
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config I2C_ARB_GPIO_CHALLENGE
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bool "GPIO-based I2C arbitration"
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depends on I2C_MUX
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help
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If you say yes to this option, support will be included for an
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I2C multimaster arbitration scheme using GPIOs and a challenge &
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response mechanism where masters have to claim the bus by asserting
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a GPIO.
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config I2C_MUX_PCA954x
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tristate "TI PCA954x I2C Mux/switches"
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depends on I2C_MUX
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help
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If you say yes here you get support for the TI PCA954x I2C mux/switch
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devices. It is x width I2C multiplexer which enables to partitioning
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I2C bus and connect multiple devices with the same address to the same
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I2C controller where driver handles proper routing to target i2c
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device. Supported chips are PCA9543, PCA9544, PCA9546, PCA9547,
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PCA9548 and PCA9646.
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It's also compatible to Maxims MAX735x I2C switch chips, which are controlled
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as the NXP PCA9548 and the MAX736x chips that act like the PCA9544.
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This includes the:
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MAX7356, MAX7357, MAX7358, MAX7367, MAX7368 and MAX7369
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config I2C_MUX_GPIO
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tristate "GPIO-based I2C multiplexer"
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depends on I2C_MUX && DM_GPIO
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help
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If you say yes to this option, support will be included for
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a 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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