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-rw-r--r--kernel/Documentation/ABI/testing/sysfs-gpio3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/Documentation/ABI/testing/sysfs-gpio b/kernel/Documentation/ABI/testing/sysfs-gpio
index 80f4c94c7..55ffa2df1 100644
--- a/kernel/Documentation/ABI/testing/sysfs-gpio
+++ b/kernel/Documentation/ABI/testing/sysfs-gpio
@@ -16,7 +16,8 @@ Description:
/sys/class/gpio
/export ... asks the kernel to export a GPIO to userspace
/unexport ... to return a GPIO to the kernel
- /gpioN ... for each exported GPIO #N
+ /gpioN ... for each exported GPIO #N OR
+ /<LINE-NAME> ... for a properly named GPIO line
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write: high, low
/edge ... r/w as: none, falling, rising, both