DDR5 uses a Serial Presence Detect (SPD) with hub function (SPD5 hub device) to store the SPD data. The SPD5 hub has 1024 bytes of EEPROM (`CONFIG_DIMM_SPD_SIZE=1024`). Ref: DDR5 SDRAM spec, JESD79-5C.01 Change-Id: Ic5e6c58f255bef86b68ce90a4f853bf4e7c7ccfe Co-authored-by: Meera Ravindranath <meera.ravindranath@intel.com> Signed-off-by: Jeremy Soller <jeremy@system76.com> Signed-off-by: Tim Crawford <tcrawford@system76.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52731 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> |
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