diff options
| author | Rob Barnes <robbarnes@google.com> | 2020-09-14 07:46:19 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-09-16 03:24:50 +0000 |
| commit | a01ee36288b26f31fc1e912324293104f33211c3 (patch) | |
| tree | bce1967dab34f331666679524e7d487529cd3038 /src/include/device | |
| parent | fcd7d0518c0719701c7ed58cd0e0869be492d34c (diff) | |
device/dram: Add method for converting MHz to MT/s
Add method for converting DDR4 speed in MHz to MT/s. Checks that MHz is
within a speed grade range.
BUG=b:167155849
TEST=ddr4-test unit test
BRANCH=Zork
Change-Id: I1433f028afb794fe3e397b03f5bd0565494c8130
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45343
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/include/device')
| -rw-r--r-- | src/include/device/dram/ddr4.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/device/dram/ddr4.h b/src/include/device/dram/ddr4.h index d22d4bc500..eac8bf8920 100644 --- a/src/include/device/dram/ddr4.h +++ b/src/include/device/dram/ddr4.h @@ -69,4 +69,9 @@ enum cb_err spd_add_smbios17_ddr4(const u8 channel, const u8 slot, const u16 selected_freq, const dimm_attr *info); +/** + * Converts DDR4 clock speed in MHz to the standard reported speed in MT/s + */ +uint16_t ddr4_speed_mhz_to_reported_mts(uint16_t speed_mhz); + #endif /* DEVICE_DRAM_DDR4L_H */ |