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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2016-04-03 16:42:16 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-04-07 21:13:02 +0200 |
| commit | 39b132b0fadf3a3ba66d3a5185a84cb5bb21b5e7 (patch) | |
| tree | 2e045896e94632621f8107db1f6bd639754ae0f4 /Documentation | |
| parent | i2c: mux: demux-pinctrl: Clean up sysfs attributes (diff) | |
| download | linux-39b132b0fadf3a3ba66d3a5185a84cb5bb21b5e7.tar.xz linux-39b132b0fadf3a3ba66d3a5185a84cb5bb21b5e7.zip | |
i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes
Update the docs according to the recent code changes, too.
Fixes: c0c508a418f9da ("i2c: mux: demux-pinctrl: Clean up sysfs attributes")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl b/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl index 7ac7d7262bb7..3c3514815cd5 100644 --- a/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl +++ b/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl @@ -1,23 +1,18 @@ -What: /sys/devices/platform/<i2c-demux-name>/cur_master +What: /sys/devices/platform/<i2c-demux-name>/available_masters Date: January 2016 KernelVersion: 4.6 Contact: Wolfram Sang <wsa@the-dreams.de> Description: + Reading the file will give you a list of masters which can be + selected for a demultiplexed bus. The format is + "<index>:<name>". Example from a Renesas Lager board: -This file selects the active I2C master for a demultiplexed bus. + 0:/i2c@e6500000 1:/i2c@e6508000 -Write 0 there for the first master, 1 for the second etc. Reading the file will -give you a list with the active master marked. Example from a Renesas Lager -board: - -root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master -* 0 - /i2c@9 - 1 - /i2c@e6520000 - 2 - /i2c@e6530000 - -root@Lager:~# echo 2 > /sys/devices/platform/i2c@8/cur_master - -root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master - 0 - /i2c@9 - 1 - /i2c@e6520000 -* 2 - /i2c@e6530000 +What: /sys/devices/platform/<i2c-demux-name>/current_master +Date: January 2016 +KernelVersion: 4.6 +Contact: Wolfram Sang <wsa@the-dreams.de> +Description: + This file selects/shows the active I2C master for a demultiplexed + bus. It uses the <index> value from the file 'available_masters'. |