[coreboot-gerrit] New patch to review for coreboot: Revert "google/oak: increase the driving strength for 4GB DRAMs"

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18005

-gerrit

commit 43cbf6cc16d0eeee579a98a13ec4a40d97ccc3b4
Author: Nicolas Boichat <drinkcat at google.com>
Date:   Wed Dec 14 17:26:12 2016 +0800

    Revert "google/oak: increase the driving strength for 4GB DRAMs"
    
    This reverts commit 34a6537512d412363bf56428b7ae284e6dd80fb3, which
    appears to cause random stability issues on some elm units.
    
    BRANCH=oak
    BUG=chrome-os-partner:60869
    BUG=chromium:673349
    TEST=None
    
    Change-Id: I5ce9e2673db1bc7a1f487a3c3bcce4651a5e3567
    Reviewed-on: https://chromium-review.googlesource.com/419862
    Commit-Ready: Nicolas Boichat <drinkcat at chromium.org>
    Tested-by: Nicolas Boichat <drinkcat at chromium.org>
    Reviewed-by: Julius Werner <jwerner at chromium.org>
---
 .../google/oak/sdram_inf/sdram-lpddr3-H9CCNNNBLTBLAR-4GB.inc          | 4 ++--
 src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc    | 4 ++--
 src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EE-4GB.inc    | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-H9CCNNNBLTBLAR-4GB.inc b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-H9CCNNNBLTBLAR-4GB.inc
index 6e3b203..099a07c 100644
--- a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-H9CCNNNBLTBLAR-4GB.inc
+++ b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-H9CCNNNBLTBLAR-4GB.inc
@@ -1,7 +1,7 @@
 { /* 2GB (8Gb + 8Gb) for single rank dram setting */
 	{
-		.impedance_drvp = 0xc,
-		.impedance_drvn = 0xd,
+		.impedance_drvp = 0x9,
+		.impedance_drvn = 0xa,
 		.datlat_ucfirst = 19,
 
 		.ca_train = {
diff --git a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc
index f03f858..0fe16a6 100644
--- a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc
+++ b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc
@@ -1,7 +1,7 @@
 { /* 4GB (16Gb + 16Gb) for dual rank dram setting */
 	{
-		.impedance_drvp = 0xc,
-		.impedance_drvn = 0xd,
+		.impedance_drvp = 0x9,
+		.impedance_drvn = 0xa,
 		.datlat_ucfirst = 19,
 
 		.ca_train = {
diff --git a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EE-4GB.inc b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EE-4GB.inc
index a9fbcf1..e6c3a83 100644
--- a/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EE-4GB.inc
+++ b/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EE-4GB.inc
@@ -1,7 +1,7 @@
 { /* 4GB (16Gb + 16Gb) for dual rank dram setting */
 	{
-		.impedance_drvp = 0xc,
-		.impedance_drvn = 0xd,
+		.impedance_drvp = 0x9,
+		.impedance_drvn = 0xa,
 		.datlat_ucfirst = 18,
 
 		.ca_train = {