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| author | Peter Korsgaard <peter.korsgaard@barco.com> | 2011-01-11 00:11:23 +0300 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-01-11 00:11:23 +0300 |
| commit | 92ed1a76ca31774eb27de14b2215841367c68056 (patch) | |
| tree | f9becefa5dbcdaa8cfd65100e1735044cd3910d6 /Documentation/powerpc | |
| parent | b18a5c80eb2e7e9c72d23f1960b09d78ddf7e5b0 (diff) | |
| download | linux-92ed1a76ca31774eb27de14b2215841367c68056.tar.xz | |
i2c: Add generic I2C multiplexer using GPIO API
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.
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation/powerpc')
0 files changed, 0 insertions, 0 deletions