coreboot/src
David Hendricks ec34b711c6 Exynos5420: ddr3: fine tuning the DDR3 timing values
Fine tuning DDR timings value for better stability

* Changed Data Driver Strength from 34 ohms to 30 ohms, expected to
  enhance signal integrity.
* Changed DQ signal from 0xf to 0x1f000f, to keep default value safe.
* Changed mrs[2] and added new mrs direct command for setting WL/RL
  without resetting DLL.
* Added explicit reset value write in phy_con0 instead of just setting
  a bit, to ensure that reset happens.
* Added DREX automatic control for ctrl_pd in none read memory state.

This is ported from: https://gerrit.chromium.org/gerrit/61405
Signed-off-by: David Hendricks <dhendrix@chromium.org>
BUG=none
BRANCH=none
TEST=booted on pit, suspend_stress_test --memory_check -c10 passed

Change-Id: I59e96e6dede7b49c6572548aca664d82ad110bb1
Reviewed-on: https://chromium-review.googlesource.com/66995
Reviewed-by: ron minnich <rminnich@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
2013-08-28 18:38:22 +00:00
..
arch ARMV7: threading support for cooperative multitasking 2013-08-23 17:16:07 -07:00
console Don't try to use CBMEM console in bootblock 2013-06-20 15:51:33 -07:00
cpu Exynos5420: ddr3: fine tuning the DDR3 timing values 2013-08-28 18:38:22 +00:00
device Add Kconfig options to override Subsytem Vendor and Device ID 2013-08-09 11:18:24 -07:00
drivers Falco/Slippy: Patch to refactor haswell/gma.c and mainboard/google/slippy/i915io.c 2013-08-23 17:16:24 -07:00
ec chromeec: Add event methods for EC requested throttle 2013-08-01 00:30:25 -07:00
include Possible thread stack implementation. 2013-08-23 10:38:10 -07:00
lib Possible thread stack implementation. 2013-08-23 10:38:10 -07:00
mainboard Exynos5420: ddr3: fine tuning the DDR3 timing values 2013-08-28 18:38:22 +00:00
northbridge Falco/Slippy: Patch to refactor haswell/gma.c and mainboard/google/slippy/i915io.c 2013-08-23 17:16:24 -07:00
southbridge Add CONFIG_LOCK_MANAGEMENT_ENGINE entry to Kconfig 2013-08-22 14:28:06 -07:00
superio Drop prototype guarding for romcc 2013-05-10 11:55:20 -07:00
vendorcode Rename cpu/x86/car.h to arch/early_variables.h 2013-07-30 13:40:23 -07:00
Kconfig Add a HAVE_ARCH_MEMMOVE option to allow overriding memmove. 2013-07-08 11:30:26 -07:00