[S] Change in coreboot[master]: soc/amd/mendocino: Hook up UPD dxio_tx_vboost_enable for PCIe optimiz...

[Chris Wang (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Matt DeVillier, Paul Menzel, Chris Wang, Martin Roth, Karthik Ramasubramanian, Felix Held.

Hello build bot (Jenkins), Jason Glenesk, Raul Rangel, Martin L Roth, Matt DeVillier, Martin Roth, Fred Reitberger, Karthik Ramasubramanian, Felix Held,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/71562

to look at the new patch set (#3).

Change subject: soc/amd/mendocino: Hook up UPD dxio_tx_vboost_enable for PCIe optimization
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soc/amd/mendocino: Hook up UPD dxio_tx_vboost_enable for PCIe optimization

Add the UPD dxio_tx_vboost_enable for PCIe optimization.
It will impact the PCIe signal integrity, need to double-confirm
the SI result after enabling this setting.

BUG=b:259622787
BRANCH=none
TEST=confirm the setting has been set correspondingly with checking
     the FSP log.

Signed-off-by: Chris.Wang 
Change-Id: I05ae5b3091219e0cb1fe469c929fad6a725db678
---
M src/soc/amd/mendocino/chip.h
M src/soc/amd/mendocino/fsp_m_params.c
M src/vendorcode/amd/fsp/mendocino/FspmUpd.h
3 files changed, 26 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/62/71562/3