1What:		/sys/devices/platform/<i2c-demux-name>/cur_master
2Date:		January 2016
3KernelVersion:	4.6
4Contact:	Wolfram Sang <wsa@the-dreams.de>
5Description:
6
7This file selects the active I2C master for a demultiplexed bus.
8
9Write 0 there for the first master, 1 for the second etc. Reading the file will
10give you a list with the active master marked. Example from a Renesas Lager
11board:
12
13root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
14* 0 - /i2c@9
15  1 - /i2c@e6520000
16  2 - /i2c@e6530000
17
18root@Lager:~# echo 2 > /sys/devices/platform/i2c@8/cur_master
19
20root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
21  0 - /i2c@9
22  1 - /i2c@e6520000
23* 2 - /i2c@e6530000
24