From e5aa5ae1ba5bc20af7d4db6e2af3ea9c96900c09 Mon Sep 17 00:00:00 2001 From: Rob Barnes Date: Mon, 14 Sep 2020 07:51:51 -0600 Subject: soc/amd/picasso: Convert DDR4 MHz to MT/s correctly Memory speed is given as an integer in MHz. In some cases it has an implicit fractional speed, so simply multiplying by 2 is not sufficient. Use method from dram/ddr4.c instead. BUG=b:167155849 TEST=Boot ezkinil, check output of 'mosys memory spd print all' and dmidecode -t17 BRANCH=Zork Signed-off-by: Rob Barnes Change-Id: Icc77c21932c68ee9f0ff0b8e35ae7b1a3732b322 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45177 Tested-by: build bot (Jenkins) Reviewed-by: Paul Fagerburg Reviewed-by: Furquan Shaikh --- src/soc/amd/picasso/dmi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'src') diff --git a/src/soc/amd/picasso/dmi.c b/src/soc/amd/picasso/dmi.c index 5189cd6ac4..1133670043 100644 --- a/src/soc/amd/picasso/dmi.c +++ b/src/soc/amd/picasso/dmi.c @@ -14,6 +14,7 @@ #include #include #include +#include /** * Populate dimm_info using AGESA TYPE17_DMI_INFO. @@ -27,13 +28,9 @@ static void transfer_memory_info(const TYPE17_DMI_INFO *dmi17, dimm->ddr_type = dmi17->MemoryType; - /** - * TYPE17_DMI_INFO holds speed in MHz. - * Change to MT/s by multiplying by 2. - */ - dimm->configured_speed_mts = 2 * dmi17->ConfigSpeed; + dimm->configured_speed_mts = ddr4_speed_mhz_to_reported_mts(dmi17->ConfigSpeed); - dimm->max_speed_mts = 2 * dmi17->Speed; + dimm->max_speed_mts = ddr4_speed_mhz_to_reported_mts(dmi17->Speed); dimm->rank_per_dimm = dmi17->Attributes; -- cgit v1.2.3