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path: root/src/mainboard/google/oak/sdram_inf/sdram-lpddr3-K4E6E304EB-4GB.inc
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2017-01-03Revert "google/oak: increase the driving strength for 4GB DRAMs"Nicolas Boichat
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>
2016-10-08google/oak: Increase the driving strength for 4GB DRAMsPH Hsu
Some PVT units encountered DRAM calibration failure during power on/off tests. The failure is caused by higher impedance of the DRAM on those units. So increase the driving strength for 4GB DRAMs. BUG=chrome-os-partner:57392 TEST=run cold reboot 100 times on PVT units which have DRAM calibration issue. Change-Id: I8a329093db3f1def566e4b7afec3c4f4bfe44c6a Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: cf1aa5ade856af433fa056f51a20d18553ae241d Original-Change-Id: I0d1776cd1a5892d1f82e9bf414620d1ef6d29132 Original-Signed-off-by: PH Hsu <ph.hsu@mediatek.com> Original-Reviewed-on: https://chromium-review.googlesource.com/394451 Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com> Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com> Original-Reviewed-by: Pin-Huan Hsu <ph.hsu@mediatek.com> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Reviewed-on: https://review.coreboot.org/16917 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2016-06-12mt8173: dram: Add more sample points to improve dram timing marginPH Hsu
BRANCH=none BUG=chrome-os-partner:52959 TEST=verified on elm-EVT SKU1/SKU2, Oak-rev5 2GB/4GB models. Change-Id: I228c629d9a3d6cd8fc5c4e8ba24cc52d5283b4e6 Signed-off-by: Martin Roth <martinroth@chromium.org> Original-Commit-Id: 3c19e7d Original-Change-Id: I22356aa8d196c4c126742cfc7e85cc693acd9b39 Original-Signed-off-by: PH Hsu <ph.hsu@mediatek.com> Original-Reviewed-on: https://chromium-review.googlesource.com/347716 Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com> Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/15115 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
2016-05-09google/oak: Add Samsung K4E6E304EB 4G LPDDR3 SDRAM for elm-rev1 SKU2PH Hsu
BUG=none BRANCH=none TEST=emerge-elm coreboot Change-Id: Ib40076f2bb1516fe222e52e18592c15073c9d288 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 84d188543a9e949f7bf792ba704263a0bf97aa51 Original-Change-Id: I43ea6f07f5e337ca3bc5c5c4b3d56c89e5e0ca98 Original-Signed-off-by: PH Hsu <ph.hsu@mediatek.com> Original-Reviewed-on: https://chromium-review.googlesource.com/338212 Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com> Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/14695 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>