1config I2C_MUX 2 bool "Support I2C multiplexers" 3 depends on DM_I2C 4 help 5 This enables I2C buses to be multiplexed, so that you can select 6 one of several buses using some sort of control mechanism. The 7 bus select is handled automatically when that bus is accessed, 8 using a suitable I2C MUX driver. 9 10config I2C_ARB_GPIO_CHALLENGE 11 bool "GPIO-based I2C arbitration" 12 depends on I2C_MUX 13 help 14 If you say yes to this option, support will be included for an 15 I2C multimaster arbitration scheme using GPIOs and a challenge & 16 response mechanism where masters have to claim the bus by asserting 17 a GPIO. 18