google/snappy: enhance CCD type-A USB 2.0 phy strength

Alan(11")/BigDaddy(14") right type-A(port#2), CCD(port#4) are
occasionally undetectable. USB 2.0 phy needs an override to enhance
drive strength.

right type-A port#2
PERPORTPETXISET: 4
PERPORTTXISET: 4
IUSBTXEMPHASISEN: 1
PERPORTTXPEHALF: 0

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

BUG=b:72922816
BRANCH=reef
TEST=emerge-snappy coreboot
Change-Id: I2b18c11709280d00ec3a6ef10f93a416acb4fb45
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/24969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed