[coreboot-gerrit] [S] Change in coreboot[master]: mb/google/brya/var/kinox: Disable PCH USB2 phy power gating

[Dtrain Hsu (Code Review)]

Dtrain Hsu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69205 )

Change subject: mb/google/brya/var/kinox: Disable PCH USB2 phy power gating
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mb/google/brya/var/kinox: Disable PCH USB2 phy power gating

The patch disables PCH USB2 Phy power gating to prevent possible display
flicker issue for kinox board. Please refer Intel doc#723158 for more
information.

BUG=b:xxxxxxxxxx
TEST=Verify the build for kinox board

Signed-off-by: Dtrain Hsu 
Change-Id: Ifcf4f89ea4c61ec4f9a31edba069d2111ca06010
---
M src/mainboard/google/brya/variants/kinox/overridetree.cb
1 file changed, 21 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/05/69205/1

diff --git a/src/mainboard/google/brya/variants/kinox/overridetree.cb b/src/mainboard/google/brya/variants/kinox/overridetree.cb
index 8356320..b75e488 100644
--- a/src/mainboard/google/brya/variants/kinox/overridetree.cb
+++ b/src/mainboard/google/brya/variants/kinox/overridetree.cb
@@ -12,6 +12,10 @@
    # GPE configuration
    register "pmc_gpe0_dw1" = "GPP_H"

+	# As per Intel Advisory doc#723158, the change is required to prevent possible
+	# display flickering issue.
+	register "usb2_phy_sus_pg_disable" = "1"
+	
    # Intel Common SoC Config
    #+-------------------+---------------------------+
    #| Field             |  Value                    |