diff options
| author | Peng Fan <peng.fan@nxp.com> | 2017-08-14 18:00:05 +0800 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2017-08-23 07:04:56 +0200 |
| commit | a430556ecb630d26880b34b914b6ec29f5454d01 (patch) | |
| tree | dea088bf097f32bc61169fd812eb49c9f5631896 /drivers/i2c/muxes/Makefile | |
| parent | 4fadcaf097887d94c909fd924864f435c69c9182 (diff) | |
i2c: muxes: add i2c gpio multiplexer driver
Add an i2c mux driver providing access to i2c bus segments using a
hardware MUX sitting on a master bus and controlled through gpio pins.
E.G. something like:
---------- ---------- Bus segment 1 - - - - -
| | SCL/SDA | |-------------- | |
| |------------| |
| | | | Bus segment 2 | |
| Linux | GPIO 1..N | MUX |--------------- Devices
| |------------| | | |
| | | | Bus segment M
| | | |---------------| |
---------- ---------- - - - - -
SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M
according to the settings of the GPIO pins 1..N.
Note commit log from kernel
commit 92ed1a76("i2c: Add generic I2C multiplexer using GPIO API")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Peng Fan <peng.fan@nxp.com> (i.MX6QP-Sabreauto)
Cc: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/i2c/muxes/Makefile')
| -rw-r--r-- | drivers/i2c/muxes/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/i2c/muxes/Makefile b/drivers/i2c/muxes/Makefile index 0811add421..3831f4e4fb 100644 --- a/drivers/i2c/muxes/Makefile +++ b/drivers/i2c/muxes/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_I2C_ARB_GPIO_CHALLENGE) += i2c-arb-gpio-challenge.o obj-$(CONFIG_$(SPL_)I2C_MUX) += i2c-mux-uclass.o obj-$(CONFIG_I2C_MUX_PCA954x) += pca954x.o +obj-$(CONFIG_I2C_MUX_GPIO) += i2c-mux-gpio.o |