Change in coreboot[master]: mb/google/guybrush/var/nipperkin: update USB 2.0 controller Lane Para...

[Kevin Chiu (Code Review)]

Attention is currently required from: Martin Roth - Personal, Bhanu Prakash Maiya, Rob Barnes, Felix Held.
Hello build bot (Jenkins), Martin Roth - Personal, Bhanu Prakash Maiya, Rob Barnes, Felix Held,

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

https://review.coreboot.org/c/coreboot/+/60089

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

Change subject: mb/google/guybrush/var/nipperkin: update USB 2.0 controller Lane Parameter
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mb/google/guybrush/var/nipperkin: update USB 2.0 controller Lane Parameter

Enhance USB 2.0 SI by increasing the level of "HS DC Voltage Level"
and "Disconnect Threshold Adjustment" per port:

port#0: COMPDISTUNE0: 0x1->0x5 / TXVREFTUNE0: 0x3->0x9
port#1: COMPDISTUNE0: 0x1->0x5 / TXVREFTUNE0: 0x3->0x9
port#4: COMPDISTUNE0: 0x1->0x6 / TXVREFTUNE0: 0x3->0xE
port#5: COMPDISTUNE0: 0x1->0x5 / TXVREFTUNE0: 0x3->0x9

BUG=b:203049656
BRANCH=guybrush
TEST=1. emerge-guybrush coreboot chromeos-bootimage
     2. pass USB eye diagram verification

Change-Id: If5a6563e93bfa6beb529a5593fcc9124ce62d77f
Signed-off-by: Kevin Chiu 
---
M src/mainboard/google/guybrush/variants/nipperkin/overridetree.cb
1 file changed, 133 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/60089/3