diff options
| author | Rob Barnes <robbarnes@google.com> | 2020-09-14 07:51:51 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-09-16 03:25:28 +0000 |
| commit | e5aa5ae1ba5bc20af7d4db6e2af3ea9c96900c09 (patch) | |
| tree | 0bdd9f83e4df2dcc87af4f0442a6491e35bbbf7b /src/soc/amd | |
| parent | a01ee36288b26f31fc1e912324293104f33211c3 (diff) | |
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 <robbarnes@google.com>
Change-Id: Icc77c21932c68ee9f0ff0b8e35ae7b1a3732b322
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45177
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/picasso/dmi.c | 9 |
1 files changed, 3 insertions, 6 deletions
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 <lib.h> #include <dimm_info_util.h> #include <vendorcode/amd/fsp/picasso/dmi_info.h> +#include <device/dram/ddr4.h> /** * 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; |