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| author | Linus Walleij <linus.walleij@linaro.org> | 2018-01-18 12:43:43 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-01-18 12:43:43 +0300 |
| commit | adbf02998b2e21e3f055f72fe2daa86260f03637 (patch) | |
| tree | e9a6b8bd543acf3ab7ad68eecb488f2ed6bd424e /Documentation/gpio/driver.txt | |
| parent | 40a3c9db08ad59062c6ca525fca32ca97edcf99e (diff) | |
| download | linux-adbf02998b2e21e3f055f72fe2daa86260f03637.tar.xz | |
gpio: Documentation update
Update a slew of documentation files with the latest changes in the
API/ABI. Again stress that sysfs is deprecated. Add all new flags and
clean up and move some text.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/gpio/driver.txt')
| -rw-r--r-- | Documentation/gpio/driver.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/gpio/driver.txt b/Documentation/gpio/driver.txt index d8de1c7de85a..3392a0fd4c23 100644 --- a/Documentation/gpio/driver.txt +++ b/Documentation/gpio/driver.txt @@ -88,6 +88,10 @@ ending up in the pin control back-end "behind" the GPIO controller, usually closer to the actual pins. This way the pin controller can manage the below listed GPIO configurations. +If a pin controller back-end is used, the GPIO controller or hardware +description needs to provide "GPIO ranges" mapping the GPIO line offsets to pin +numbers on the pin controller so they can properly cross-reference each other. + GPIOs with debounce support --------------------------- |