[coreboot-gerrit] Change in coreboot[master]: mb/google/zork:Set USB3 typeA port to force gen1 for morphius

[chris wang (Code Review)]

Hello Chris Wang,

I'd like you to do a code review. Please visit

https://review.coreboot.org/c/coreboot/+/45334

to review the following change.

Change subject: mb/google/zork:Set USB3 typeA port to force gen1 for morphius
......................................................................

mb/google/zork:Set USB3 typeA port to force gen1 for morphius

In morphius, the USBA port needs to set to gen1.So set the corresponding
setting to usb3 port force gen1 to force USB3 to Gen1.

BUG=b:167651308
BRANCH=zork
TEST=Build,verify the USB3 speed in gen1

Signed-off-by: Chris Wang 
Change-Id: I10419b91fe86fe3e06de36ddfe0d1769c1031f8e
---
M src/mainboard/google/zork/variants/morphius/overridetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/34/45334/1

diff --git a/src/mainboard/google/zork/variants/morphius/overridetree.cb b/src/mainboard/google/zork/variants/morphius/overridetree.cb
index ceacc70..acce883 100644
--- a/src/mainboard/google/zork/variants/morphius/overridetree.cb
+++ b/src/mainboard/google/zork/variants/morphius/overridetree.cb
@@ -22,6 +22,9 @@

# End : OPN Performance Configuration

+	# Force USB3 port to gen1, bit0 - controller0 Port0, bit1 - Port1, etc
+	register "usb3_port_force_gen1" = "0x6" #0110b
+
    # Enable I2C2 for trackpad, touchscreen, pen at 400kHz
    register "i2c[2]" = "{
    	.speed = I2C_SPEED_FAST,