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Peng Fan a430556ecb 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>
2017-08-23 07:04:56 +02:00
..
adc dm: adc: Convert uclass to livetree 2017-06-01 07:03:13 -06:00
ata dm: sata: dwc_ahsata: Add support for driver model 2017-08-17 16:44:17 +09:00
bios_emulator bios_emulator: Fix cast for 64-bit compilation 2016-10-11 11:55:33 +08:00
block dm: blk: Update return value in blk_create_devicef() 2017-08-17 16:44:16 +09:00
bootcount env: Rename getenv_hex(), getenv_yesno(), getenv_ulong() 2017-08-16 08:30:32 -04:00
clk ARM: uniphier: remove sLD3 SoC support 2017-08-20 23:05:39 +09:00
core dm: core: Avoid calling dm_scan_fdt_dev() with of-platdata 2017-08-17 16:44:16 +09:00
cpu dm: core: Update device_bind_driver_to_node() to use ofnode 2017-06-01 07:03:08 -06:00
crypto Convert CONFIG_CMD_HASH to Kconfig 2017-05-22 12:38:15 -04:00
ddr env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
demo dm: core: Replace of_offset with accessor 2017-02-08 06:12:14 -07:00
dfu env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
dma imx: reorganize IMX code as other SOCs 2017-07-12 10:17:44 +02:00
firmware dm: core: Rename of_device_is_compatible() 2017-06-01 07:03:06 -06:00
fpga fpga: xilinx: Avoid using local intermediate buffer 2017-08-02 09:11:52 +02:00
gpio stm32f1: remove stm32f1 support 2017-08-13 15:17:37 -04:00
i2c i2c: muxes: add i2c gpio multiplexer driver 2017-08-23 07:04:56 +02:00
input env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
led dm: core: Update device_bind_driver_to_node() to use ofnode 2017-06-01 07:03:08 -06:00
mailbox dm: mailbox: Update uclass to support livetree 2017-06-01 07:03:15 -06:00
memory memory: Move TI_AEMIF config to KCONFIG 2016-04-18 17:11:43 -04:00
misc rockchip: efuse: dm: change to use dev_read_addr 2017-07-27 14:59:00 +02:00
mmc mmc: Support generic PCI SD host controller 2017-08-18 15:37:38 +09:00
mtd Merge git://git.denx.de/u-boot-spi 2017-08-16 18:07:15 -04:00
net Merge git://www.denx.de/git/u-boot-imx 2017-08-16 18:12:00 -04:00
nvme nvme: Handle zero Maximum Data Transfer Size (MDTS) 2017-08-13 15:17:33 -04:00
pch dm: Use dm_scan_fdt_dev() directly where possible 2016-07-27 14:15:54 -06:00
pci env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
pcmcia Kconfig; Drop CONFIG_IDE_TI_CARDBUS and associated driver 2017-08-11 15:41:51 -04:00
phy phy: add a NO-OP phy driver 2017-07-28 23:34:44 +02:00
pinctrl ARM: uniphier: remove sLD3 SoC support 2017-08-20 23:05:39 +09:00
power regulator: palmas: disable bypass when the LDO is enabled 2017-08-01 11:58:01 +09:00
pwm dm: tegra: pwm: Convert to livetree 2017-07-28 12:02:47 -06:00
qe QE: add QE support on SD boot 2017-06-01 19:56:54 -07:00
ram rockchip: rk3368: add DRAM controller driver with DRAM initialisation 2017-08-13 17:12:33 +02:00
remoteproc dm: core: Replace of_offset with accessor 2017-02-08 06:12:14 -07:00
reset reset: uniphier: refactor reset data and add NAND/eMMC reset lines 2017-08-20 23:06:20 +09:00
rtc env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
scsi env: Rename common functions related to setenv() 2017-08-16 08:23:32 -04:00
serial env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
soc Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
sound dm: gpio: Add live tree support 2017-06-01 07:03:10 -06:00
spi Merge branch 'master' of git://git.denx.de/u-boot-rockchip 2017-08-14 10:40:01 -04:00
spmi dm: Rename dev_addr..() functions 2017-06-01 07:03:01 -06:00
sysreset rockchip: rk322x: add sysreset driver 2017-07-11 12:13:46 +02:00
thermal thermal: imx: fix calculation 2017-05-18 11:23:31 +02:00
timer rockchip: timer: add device-model timer driver for RK3368 (and similar) 2017-08-13 17:12:36 +02:00
tpm dm: Rename dev_addr..() functions 2017-06-01 07:03:01 -06:00
usb fastboot: Ensure we treat CONFIG_FASTBOOT_BUF_ADDR as long 2017-08-22 08:20:02 -04:00
video env: Rename getenv/_f() to env_get() 2017-08-16 08:30:24 -04:00
watchdog wdt: Update uclass to make clear that the timeout is in ms 2017-08-13 15:17:34 -04:00
Kconfig nvme: Add NVM Express driver support 2017-08-13 15:17:31 -04:00
Makefile Merge branch 'master' of git://git.denx.de/u-boot-rockchip 2017-08-14 10:40:01 -04:00