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Diffstat (limited to 'Documentation/gpio.txt')
| -rw-r--r-- | Documentation/gpio.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/gpio.txt b/Documentation/gpio.txt index 620a07844e8c..e08a883de36e 100644 --- a/Documentation/gpio.txt +++ b/Documentation/gpio.txt @@ -322,6 +322,9 @@ where 'flags' is currently defined to specify the following properties: * GPIOF_OPEN_DRAIN - gpio pin is open drain type. * GPIOF_OPEN_SOURCE - gpio pin is open source type. + * GPIOF_EXPORT_DIR_FIXED - export gpio to sysfs, keep direction + * GPIOF_EXPORT_DIR_CHANGEABLE - also export, allow changing direction + since GPIOF_INIT_* are only valid when configured as output, so group valid combinations as: |