| config I2C_MUX |
| bool "Support I2C multiplexers" |
| depends on DM_I2C |
| help |
| This enables I2C buses to be multiplexed, so that you can select |
| one of several buses using some sort of control mechanism. The |
| bus select is handled automatically when that bus is accessed, |
| using a suitable I2C MUX driver. |
| |
| config SPL_I2C_MUX |
| bool "Support I2C multiplexers on SPL" |
| depends on I2C_MUX |
| help |
| This enables I2C buses to be multiplexed, so that you can select |
| one of several buses using some sort of control mechanism. The |
| bus select is handled automatically when that bus is accessed, |
| using a suitable I2C MUX driver. |
| |
| config I2C_ARB_GPIO_CHALLENGE |
| bool "GPIO-based I2C arbitration" |
| depends on I2C_MUX |
| 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. |
| |
| config I2C_MUX_PCA954x |
| tristate "TI PCA954x I2C Mux/switches" |
| depends on I2C_MUX |
| help |
| If you say yes here you get support for the TI PCA954x I2C mux/switch |
| devices. It is x width I2C multiplexer which enables to partitioning |
| I2C bus and connect multiple devices with the same address to the same |
| I2C controller where driver handles proper routing to target i2c |
| device. Supported chips are PCA9544, PCA9547, PCA9548 and PCA9646. |
| |
| config I2C_MUX_GPIO |
| tristate "GPIO-based I2C multiplexer" |
| depends on I2C_MUX && DM_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. |