From 1668be71ccae5a9610fc8a224bd80fbe852f93ae Mon Sep 17 00:00:00 2001
From: David Brownell <david-b@pacbell.net>
Date: Wed, 11 Apr 2007 23:28:42 -0700
Subject: [PATCH] [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>
---
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