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authorDavid Hendricks <dhendrix@chromium.org>2013-08-23 15:47:06 -0700
committerIsaac Christensen <isaac.christensen@se-eng.com>2014-08-12 22:06:10 +0200
commit3ffdafdfa4cabdae4828638c402a6a81780bc275 (patch)
treebf819d4eb9381cfb9f5ea4a02e69e27caea5de6e /.gitmodules
parent79bff70ac829f45b27650671f9c33028c4b8f6c7 (diff)
Exynos5420: Remove code for enabling read leveling
This patch intends to remove all code which enables hardware read leveling. We need to disable h/w read leveling because new ASV table is merged in kernel (which is based on the new characterization condition) and new characterization environment has h/w read leveling disabled, so we should also disable this. Also, disabling h/w read leveling improves the MIF LVcc value (LVcc value is the value at which DDR will fail to work properly), improve LVcc means we have enough voltage margin for MIF. When h/w leveling is enabled, we have almost zero volatge margin. This was ported from: https://gerrit.chromium.org/gerrit/66070 Signed-off-by: David Hendricks <dhendrix@chromium.org> Change-Id: Id0a2d77e6214325f226d51ae08464b39424cea83 Reviewed-on: https://chromium-review.googlesource.com/66994 Reviewed-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: David Hendricks <dhendrix@chromium.org> Tested-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit d29add98f52876aaed4fee2b76edf6b4591e66e8) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6610 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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