Hi Pete,
On 02.12.18 23:13, petecb via coreboot wrote:
As the default SATA setting already appeared correct, I modified the 3 additional settings that Taiidan had already indicated worked (memory_speed_boost, 1394 controller and SATA ALPM) so in my mind I was only adjusting one additional setting, the memory voltage. I thought this was fairly sensible as my RAM is definitely 1.35V.
did you have CONFIG_USE_OPTION_TABLE before? If not you potentially have changed all settings. The defaults in the cmos.default file don't have to be the same defaults that are hardcoded in the code and the file only takes effect if CONFIG_USE_OPTION_TABLE is set. As I looked at the SATA code, I know the AHCI setting is one that definitely differs.
That's a thing that could easily be improved. Check all the options and their defaults in the source code and agree on one single reasonable default.
I would value confirmation that it is safe to run the Crucial CT16G3ERSLD4160B RAM I have in this board at 1.5v.
Yes, all DDR3L should be 1.5V compatible. I'm fairly confused that such a board has a 1.35V option, though.
Nico