Can't find sdram_scrub_rate file

I have bought the X670E Pro RS recently and added some ECC memories to it. Now I wanted to enable memory scrubbing, however when I look in /sys/devices/system/edac/mc/mc0/ the sdram_scrub_rate is missing. I can't seem to find an answer as to why online. I changed the ECC from auto to enable just to force it to be enabled. lsmod | fgrep edac reports: amd64_edac 69632 0 edac_mce_amd 40960 1 amd64_edac Which is correct, yes(?). Am I missing a driver, or maybe I missed that edac-utils is required. Why is sdram_scrub_rate missing is the question.