Change in coreboot[master]: [RFC|NEEDTEST] soc/intel: cnl,icl,elh,jsl,tgl: enable C6DRAM

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/45417 )

Change subject: [RFC|NEEDTEST] soc/intel: cnl,icl,elh,jsl,tgl: enable C6DRAM
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Patch Set 4:
> Patch Set 3:
> > Patch Set 2:
> >
> > So I went back and reviewed the literature, and there have been instances on several chipsets where the c6dram feature was broken in certain ucode releases.
>
> Ouch. Can you provide more info on that like uc versions? Is that "literature" public?

I will try to dig up and share as much as I can.
> > I think this is reason enough to leave this off by default, but leave the option open in the devicetree
>
> Then it's not good to have it in the devicetree, since the devicetree doesn't force any microcode, right?
>
> What about adding a Kconfig (default n) instead?

SGTM