xref: /openbmc/u-boot/drivers/i2c/muxes/Kconfig (revision 936f575e)
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 SPL_I2C_MUX
11	bool "Support I2C multiplexers on SPL"
12	depends on I2C_MUX
13	help
14	  This enables I2C buses to be multiplexed, so that you can select
15	  one of several buses using some sort of control mechanism. The
16	  bus select is handled automatically when that bus is accessed,
17	  using a suitable I2C MUX driver.
18
19config I2C_ARB_GPIO_CHALLENGE
20	bool "GPIO-based I2C arbitration"
21	depends on I2C_MUX
22	help
23	  If you say yes to this option, support will be included for an
24	  I2C multimaster arbitration scheme using GPIOs and a challenge &
25	  response mechanism where masters have to claim the bus by asserting
26	  a GPIO.
27
28config I2C_MUX_PCA954x
29	tristate "TI PCA954x I2C Mux/switches"
30	depends on I2C_MUX
31	help
32	  If you say yes here you get support for the TI PCA954x
33	  I2C mux/switch devices. It is x width I2C multiplexer which enables to
34	  partitioning I2C bus and connect multiple devices with the same address
35	  to the same I2C controller where driver handles proper routing to
36	  target i2c device. PCA9544 and PCA9548 are supported.
37
38config I2C_MUX_GPIO
39        tristate "GPIO-based I2C multiplexer"
40	depends on I2C_MUX && DM_GPIO
41	help
42	  If you say yes to this option, support will be included for
43	  a GPIO based I2C multiplexer. This driver provides access to
44	  I2C busses connected through a MUX, which is controlled
45	  through GPIO pins.
46