From d4c9346c3f8900b4b534f62bb0c02f727df22e07 Mon Sep 17 00:00:00 2001 From: "jinkun.hong" Date: Thu, 23 Jul 2015 11:51:51 +0800 Subject: veyron: update mickey sdram-lpddr3-samsung-2GB.inc Modify MR3_I/O Configuration, Change 34.3 ohms to 60 ohms. This resolves an issue that was observed on some Mickey boards with the Samsung 2GB LPDDR3 and is believed to be caused by inferior routing on the small PCB. (Elpida 2GB LPDDR3 seems unaffected.) BUG=chrome-os-partner:41905 TEST=Boot from mickey BRANCH=None Change-Id: Ic20d9eceb00658c214fd032a2f213dbe0d51a91b Signed-off-by: Patrick Georgi Original-Commit-Id: 1305010aee6818910ad1dec26d9d948505ca281e Original-Change-Id: I5517e07fc5716ed4cd58e5502f13ccd61ffb5357 Original-Signed-off-by: jinkun.hong Original-Signed-off-by: Julius Werner Original-Reviewed-on: https://chromium-review.googlesource.com/286333 Reviewed-on: http://review.coreboot.org/11051 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Stefan Reinauer --- .../google/veyron_mickey/sdram_inf/sdram-lpddr3-samsung-2GB.inc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/mainboard/google/veyron_mickey') diff --git a/src/mainboard/google/veyron_mickey/sdram_inf/sdram-lpddr3-samsung-2GB.inc b/src/mainboard/google/veyron_mickey/sdram_inf/sdram-lpddr3-samsung-2GB.inc index 0f15ba5074..cc39f621c2 100644 --- a/src/mainboard/google/veyron_mickey/sdram_inf/sdram-lpddr3-samsung-2GB.inc +++ b/src/mainboard/google/veyron_mickey/sdram_inf/sdram-lpddr3-samsung-2GB.inc @@ -65,7 +65,8 @@ .mr[0] = 0x0, .mr[1] = 0xC3, .mr[2] = 0x6, - .mr[3] = 0x1 + /* 60Ohms instead of 34.3 due to bad PCB routing on Mickey. */ + .mr[3] = 0x4 }, .noc_timing = 0x20D266A4, .noc_activate = 0x5B6, -- cgit v1.2.3