Kevin Chiu uploaded patch set #4 to this change.

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mb/google/zork: update USB 2.0 controller Lane Parameter for morphius

Enhance USB 2.0 SI by increasing the level of "HS DC Voltage Level"
and "Disconnect Threshold Adjustment".
COMPDISTUNE0: 0x3->0x7
TXVREFTUNE0: 0x6->0xf

BUG=b:162614573
BRANCH=zork
TEST=1. emerge-zork coreboot
     2. check U2 registers are set correctly
     3. test with servo v4 type-c, it's working expectedly.

Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Change-Id: I278cc0aaddbc9fce595bf57ca69ee8abfc9f5659
---
M src/mainboard/google/zork/variants/morphius/overridetree.cb
1 file changed, 13 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/37/46537/4

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