[coreboot-gerrit] Change in coreboot[master]: WIP: drivers/intel/usb4/iretimer: Enable retimer FW upgrade mux inter...

[Brandon Breitenstein (Code Review)]

Hello build bot (Jenkins), Patrick Georgi, Martin Roth, John Zhao, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/48630

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

Change subject: WIP: drivers/intel/usb4/iretimer: Enable retimer FW upgrade mux interaction
......................................................................

WIP: drivers/intel/usb4/iretimer: Enable retimer FW upgrade mux interaction

In order to update the BB retimers for usb4/tbt they need to be turned on and in
a specific mode. Expanding the current DSM to allow for the use of an EC RAM Byte
to get the current state of each port and wether or not it has a retimer.
It also allows Kernel to issue a state for the retimer to be put into for
firmware updates.

Change-Id: I768cfb56790049c231173b0ea0f8e08fe6b64b93
Signed-off-by: Brandon Breitenstein 
---
M src/drivers/intel/usb4/retimer/retimer.c
M src/ec/google/chromeec/acpi/emem.asl
2 files changed, 33 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/48630/3