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[PATCH] doc: gpio.txt describes open-drain emulation
authorDavid Brownell <david-b@pacbell.net>
Thu, 12 Apr 2007 06:28:42 +0000 (23:28 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Thu, 12 Apr 2007 22:31:42 +0000 (15:31 -0700)
commit1668be71ccae5a9610fc8a224bd80fbe852f93ae
tree4efb5472b8295a9b7572709f8d3903c5a83943datree | snapshot (tar.gz zip)
parentfe20e581a72979917e35d5146458ceba79be391fcommit | diff
[PATCH] doc: gpio.txt describes open-drain emulation

Update the GPIO docs to describe the idiom whereby open drain signals are
emulated by toggling the GPIO direction.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/gpio.txt diff | blob | blame | history