diff options
| author | Olof Johansson <olof@lixom.net> | 2012-06-26 06:18:21 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-07-17 21:00:15 +0200 |
| commit | f447ed8b31da7b24c7c75c2d4624598135b41217 (patch) | |
| tree | 37888d2e359422bf4900850722d8809eb77f62c1 /Documentation/devicetree | |
| parent | gpiolib: Add support for Wolfson Microelectronics Arizona class devices (diff) | |
| download | linux-f447ed8b31da7b24c7c75c2d4624598135b41217.tar.xz linux-f447ed8b31da7b24c7c75c2d4624598135b41217.zip | |
gpio: samsung: add flags specifier to device-tree binding
This adds a flags field to the gpio specifier for Samsung. I didn't
want to add yet another field in the already quite long specifier, so
I decided to compress it together with the Pull Up/Down settings instead.
This is needed to, for example, have a gpio-keys input that is active low.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-samsung.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-samsung.txt b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt index 8f50fe5e6c42..5375625e8cd2 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-samsung.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt @@ -11,14 +11,15 @@ Required properties: <[phandle of the gpio controller node] [pin number within the gpio controller] [mux function] - [pull up/down] + [flags and pull up/down] [drive strength]> Values for gpio specifier: - Pin number: is a value between 0 to 7. - - Pull Up/Down: 0 - Pull Up/Down Disabled. - 1 - Pull Down Enabled. - 3 - Pull Up Enabled. + - Flags and Pull Up/Down: 0 - Pull Up/Down Disabled. + 1 - Pull Down Enabled. + 3 - Pull Up Enabled. + Bit 16 (0x00010000) - Input is active low. - Drive Strength: 0 - 1x, 1 - 3x, 2 - 2x, |