| Simon Glass | 2a80c40 | 2015-08-03 08:19:21 -0600 | [diff] [blame] | 1 | config I2C_MUX |
| Michal Simek | c1adca9 | 2015-12-08 11:18:53 +0100 | [diff] [blame] | 2 | bool "Support I2C multiplexers" |
| Simon Glass | 2a80c40 | 2015-08-03 08:19:21 -0600 | [diff] [blame] | 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. |
| Simon Glass | e6346b0 | 2015-08-03 08:19:22 -0600 | [diff] [blame] | 9 | |
| 10 | config I2C_ARB_GPIO_CHALLENGE |
| Michal Simek | 5ea6f88 | 2015-12-08 11:18:54 +0100 | [diff] [blame^] | 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. |