[S] Change in coreboot[master]: mb/google/brya/var/omnigul: Add usb_lpm_incapable for DB Type-C port

[Dtrain Hsu (Code Review)]

Dtrain Hsu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/74246 )

Change subject: mb/google/brya/var/omnigul: Add usb_lpm_incapable for DB Type-C port
......................................................................

mb/google/brya/var/omnigul: Add usb_lpm_incapable for DB Type-C port

Intel ADL-P USB Type-C ports are not compatible with Parade PS8815
retimer on USB U1/U2 transition. The usb_lpm_incapable config is
used to disable USB U1/U2 transition for these Type-C ports.

BUG=b:
BRANCH=firmware-brya-14505.B
TEST=Plug in device and check LPM sysfs nodes are disabled
localhost ~ # cat /sys/bus/usb/devices/2-X/power/usb3_hardware_lpm_u1
disabled
localhost ~ # cat /sys/bus/usb/devices/2-X/power/usb3_hardware_lpm_u2
disabled

Change-Id: I618cd09f45ede0a76cf46b3e467ba87775dd5d9d
Signed-off-by: Dtrain Hsu 
---
M src/mainboard/google/brya/variants/omnigul/overridetree.cb
1 file changed, 23 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/74246/1

diff --git a/src/mainboard/google/brya/variants/omnigul/overridetree.cb b/src/mainboard/google/brya/variants/omnigul/overridetree.cb
index 2af7db4..6ba5ba0 100644
--- a/src/mainboard/google/brya/variants/omnigul/overridetree.cb
+++ b/src/mainboard/google/brya/variants/omnigul/overridetree.cb
@@ -336,6 +336,7 @@
    					register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
    					register "use_custom_pld" = "true"
    					register "custom_pld" = "ACPI_PLD_TYPE_C(LEFT, RIGHT, ACPI_PLD_GROUP(2, 1))"
+						register "usb_lpm_incapable" = "true"
    					device ref tcss_usb3_port3 on end
    				end
    			end