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mb/google/eve: Do not limit memory speed on new SKU 5 boards 

Board changes in rev6+ have a fix to VDDQ that should fix the issue
that was being seen with this SKU, so only lower the memory speed on
older boards.

BUG=b:37172778
TEST=memory stress testing on rev6 boards

Change-Id: I6d6fe730cabd74af23eab3f02feef9da01a35fd4
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/20429
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Duncan Laurie 2017-06-20 20:42:38 -07:00
parent af81a9132a
commit dea94abebb
1 changed files with 2 additions and 1 deletions
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3
src/mainboard/google/eve/romstage.c
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@ -14,6 +14,7 @@
* GNU General Public License for more details. * GNU General Public License for more details.
*/ */
#include <boardid.h>
#include <string.h> #include <string.h>
#include <stddef.h> #include <stddef.h>
#include <fsp/soc_binding.h> #include <fsp/soc_binding.h>
@ -49,7 +50,7 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
mem_cfg->MemorySpdDataLen = SPD_LEN; mem_cfg->MemorySpdDataLen = SPD_LEN;
/* Limit K4EBE304EB-EGCF memory to 1600MHz for stability */ /* Limit K4EBE304EB-EGCF memory to 1600MHz for stability */
if (mainboard_get_spd_index() == 5) { if (board_id() < 6 && mainboard_get_spd_index() == 5) {
printk(BIOS_WARNING, "Limiting memory to 1600MHz\n"); printk(BIOS_WARNING, "Limiting memory to 1600MHz\n");
mem_cfg->DdrFreqLimit = 1600; mem_cfg->DdrFreqLimit = 1600;
} }