tree a901f52450e223f61c6cd5a895f22b01bc728853
parent 1ec8f97782060757dc8d2df2ff1c022039b225f8
author Lean Sheng Tan <sheng.tan@9elements.com> 1662560752 +0200
committer Felix Held <felix-coreboot@felixheld.de> 1664556660 +0000

mb/prodrive/atlas: Add Kconfig option to enable SaGv

It turns out that one can use Kconfig options to specify values for
devicetree options, as long as the resulting expression is a compile
time constant. Use this to configure SaGv for Atlas: enable it by
default, but allow SaGv to be disabled manually for convenience when
testing. Enabling SaGv makes MRC train the RAM multiple times, which
takes a significant amount of time.

For further info on SAGV on ADL, please refer to Intel Doc 655258
(Alder Lake Datasheet) section 5.1.3.2.

Signed-off-by: Lean Sheng Tan <sheng.tan@9elements.com>
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Change-Id: I3c6ac25d414122c408f2348d12dba8dce909e567
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67412
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>