mb/google/reef/sand: Override USB2 phy settings

Sometimes the USB device is not detected. USB2 port#1 and #4 PHY register need
to be overridden.

port#1:
PERPORTPETXISET = 4
PERPORTTXISET = 4
IUSBTXEMPHASISEN= 1
PERPORTTXPEHALF= 0

port#4:
PERPORTPETXISET = 7
PERPORTTXISET = 7
IUSBTXEMPHASISEN= 1
PERPORTTXPEHALF= 0

BUG=b:72623892
BRANCH=master
TEST=emerge-sand coreboot chromeos-bootimage

Change-Id: I4051aefbec4583bb1f8babec08fdbeb27f749769
Signed-off-by: Katherine Hsieh <Katherine.Hsieh@quantatw.com>
Reviewed-on: https://review.coreboot.org/23879
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed