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Riku Viitanen has posted comments on this change by Riku Viitanen. ( https://review.coreboot.org/c/coreboot/+/85793?usp=email )
Change subject: nb/sandybridge: Implement automatic DRAM voltage setting ......................................................................
Patch Set 9:
(2 comments)
Patchset:
PS9: notes about ddr3l (1.35v) ram
File src/northbridge/intel/sandybridge/raminit.c:
https://review.coreboot.org/c/coreboot/+/85793/comment/3f52c145_e5ac9e92?usp... : PS5, Line 197: VOLTAGE_MIN
Paranoid me thinks it could cause unstability in the IMC. […]
I don't have any DDR3L DIMMs to test with, but I now have another board (P8H67-I DELUXE) which I can use to experiment with SO-DIMMs. It seems like 1.35V memory voltages work fine with it (and the OEM BIOS automatically sets them based on SPD data). So it would probably be safe to implement 1.35V voltages in coreboot. I will try to do that soon.