diff options
| author | Alexander Sverdlin <alexander.sverdlin@nsn.com> | 2015-01-23 16:41:29 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-01-23 17:12:56 +0100 |
| commit | 72f0271576eeef40c81c2949e0a8abeaef9a7690 (patch) | |
| tree | b43de87ac1c1aa12253b2fe762ddd8e055b330fa /Documentation | |
| parent | i2c: designware: use {readl|writel}_relaxed instead of readl/writel (diff) | |
| download | linux-72f0271576eeef40c81c2949e0a8abeaef9a7690.tar.xz linux-72f0271576eeef40c81c2949e0a8abeaef9a7690.zip | |
of: i2c: Add i2c-mux-idle-disconnect DT property to PCA954x mux driver
Add i2c-mux-idle-disconnect device tree property to PCA954x mux driver. The new
property forces the multiplexer to disconnect child buses in idle state. This is
used, for example, when there are several multiplexers on the same bus and the
devices on the underlying buses might have same I2C addresses.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nsn.com>
[wsa: added a newline]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt index 34a3fb6f8488..cf53d5fba20a 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt @@ -16,6 +16,9 @@ Required Properties: Optional Properties: - reset-gpios: Reference to the GPIO connected to the reset input. + - i2c-mux-idle-disconnect: Boolean; if defined, forces mux to disconnect all + children in idle state. This is necessary for example, if there are several + multiplexers on the bus and the devices behind them use same I2C addresses. Example: |