From: Gregory CLEMENT <gregory.clement@free-electrons.com>
Date: Thu, 22 Aug 2013 14:19:06 +0000 (+0200)
Subject: i2c: mv64xxx: Fix timing issue on Armada XP (errata FE-8471889)
X-Git-Tag: v3.12-rc1~140^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1d15b68aab86f1f3b602fa65e7618c0065d46e6;p=pandora-kernel.git

i2c: mv64xxx: Fix timing issue on Armada XP (errata FE-8471889)

All the Armada XP (mv78230, mv78260 and mv78460) have a silicon issue
in the I2C controller which violate the i2c repeated start
timing. The I2C standard requires a minimum of 4.7us for the repeated
start condition whereas the I2C controller of the Armada XP this time
is 2.9us.

So this patch adds a 5us delay for the start case only if the
the compatible i2c-mv78230 is set.

Based on the initals patches from Zbigniew Bodek

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Zbigniew Bodek <zbb@semihalf.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
---

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