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| author |   Heiko Stübner <heiko@sntech.de> | 2013-06-14 17:42:49 +0200 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2013-06-17 18:18:30 +0200 |
| commit | 9ee1f7d266aa1e2bfeb20cb5d4ac299c8e8ef8c7 (patch) | |
| tree | d3e7a6a2e18566f4472a0c09e5cf909285746925 /Documentation/devicetree/bindings/pinctrl | |
| parent | Fix comment on pinctrl_gpio_range.pin_base (diff) | |
| download | linux-dev-9ee1f7d266aa1e2bfeb20cb5d4ac299c8e8ef8c7.tar.xz linux-dev-9ee1f7d266aa1e2bfeb20cb5d4ac299c8e8ef8c7.zip | |
pinctrl: clarify some dt pinconfig options
The bias-pull-* options use values > 0 to indicate that the pull should
be activated and optionally also indicate the strength of the pull.
Therefore use an default value of 1 for these options.
Split the low-power-mode option into low-power-enable and -disable.
Update the documentation to describe the param arguments better.
Reported-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl')
| -rw-r--r-- | Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt index ef7cd572214c..2d730e3dd496 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt @@ -158,9 +158,29 @@ input-schmitt - run in schmitt-trigger mode with hysteresis X input-debounce - debounce mode with debound time X power-source - select power source X slew-rate - use slew-rate X -low-power-mode - low power mode +low-power-enable - enable low power mode +low-power-disable - disable low power mode output-low - set the pin to output mode with low level output-high - set the pin to output mode with high level +Arguments for parameters: + +- bias-pull-up, -down and -pin-default take as optional argument 0 to disable + the pull, on hardware supporting it the pull strength in Ohm. bias-disable + will also disable any active pull. + +- drive-strength takes as argument the target strength in mA. + +- input-schmitt takes as argument the adjustable hysteresis in a + driver-specific format + +- input-debounce takes the debounce time as argument or 0 to disable debouncing + +- power-source argument is the custom value describing the source to select + +- slew-rate takes as argument the target rate in a driver-specific format + +All parameters not listed here, do not take an argument. + More in-depth documentation on these parameters can be found in <include/linux/pinctrl/pinconfig-generic.h> |