Mike Banon has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/30987 )
Change subject: mb/asus: Add Asus A88XM-E FM2+ with documentation ......................................................................
Patch Set 38:
(2 comments)
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... File src/mainboard/asus/a88xm-e/Kconfig:
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... PS38, Line 39: default BOARD_ASUS_A88XM_E_DDR3_VOLT_150
Why don't you try the other settings as well?
As 1.65V for 1.50V RAM could be dangerous, perhaps the only way I could test this is to set 1.35V here: if this setting really works, then with 1.50V RAM this board shouldn't boot successfully, but should boot fine with 1.35V/1.50V DDR3L.
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... File src/mainboard/asus/a88xm-e/bootblock.c:
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... PS38, Line 33: reg32 = CONFIG_BOARD_ASUS_A88XM_E_DDR3_VOLT_VAL;
I wouldn't do such guesses.
Seems it could be tested only by practice - can't find any datasheet for these "DigiVRM" controllers: they seem to be a rebrand of some other controllers, but their true models are unknown.