From 08117c412c90be8647714721b7fe3109726f7ae1 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Mon, 10 Apr 2017 01:11:21 -0700 Subject: google/eve: Limit memory SKU 5 to 1600MHz Due to issues with stability limit the SKU with K4EBE304EB-EGCF memory to 1600MHz instead of 1866MHz. BUG=b:37172778 BRANCH=none TEST=pass stress testing on devices with this memory Change-Id: I02af7e9c35e2c5b0b85223d58025cbd29841d973 Signed-off-by: Duncan Laurie Reviewed-on: https://review.coreboot.org/19227 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/mainboard/google/eve/romstage.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/mainboard/google/eve/romstage.c') diff --git a/src/mainboard/google/eve/romstage.c b/src/mainboard/google/eve/romstage.c index 2378e9052d..cd8fa083a9 100644 --- a/src/mainboard/google/eve/romstage.c +++ b/src/mainboard/google/eve/romstage.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "spd/spd.h" void mainboard_memory_init_params(FSPM_UPD *mupd) @@ -46,4 +47,10 @@ void mainboard_memory_init_params(FSPM_UPD *mupd) mem_cfg->MemorySpdPtr00 = mainboard_get_spd_data(); mem_cfg->MemorySpdPtr10 = mem_cfg->MemorySpdPtr00; mem_cfg->MemorySpdDataLen = SPD_LEN; + + /* Limit K4EBE304EB-EGCF memory to 1600MHz for stability */ + if (mainboard_get_spd_index() == 5) { + printk(BIOS_WARNING, "Limiting memory to 1600MHz\n"); + mem_cfg->DdrFreqLimit = 1600; + } } -- cgit v1.2.3