Hello Peng Fan, Am 14.08.2017 um 12:00 schrieb Peng Fan:
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....@nxp.com> Tested-by: Peng Fan <peng....@nxp.com> (i.MX6QP-Sabreauto) Cc: Heiko Schocher <h...@denx.de> Cc: Stefano Babic <sba...@denx.de> Cc: Simon Glass <s...@chromium.org> --- drivers/i2c/muxes/Kconfig | 9 +++ drivers/i2c/muxes/Makefile | 1 + drivers/i2c/muxes/i2c-mux-gpio.c | 138 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 148 insertions(+) create mode 100644 drivers/i2c/muxes/i2c-mux-gpio.c
Applied to u-boot-i2c master Thanks! bye, Heiko -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
