diff options
| author | Nicolas Boichat <drinkcat@google.com> | 2016-12-14 17:26:12 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2017-01-03 22:13:05 +0100 |
| commit | b431a51086f89e74aa681b61744bc312255b6cb4 (patch) | |
| tree | 74ac6014d51a41b05252e544fb3cd21de9dd3b85 | |
| parent | a765090f0d2f77cb099a60c23da8acaff62cb171 (diff) | |
| download | coreboot-b431a51086f89e74aa681b61744bc312255b6cb4.tar.xz | |
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@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/18005
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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 6e3b203fed..099a07c1dc 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 f03f858b82..0fe16a6104 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 a9fbcf17ee..e6c3a831e6 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 = { |