mb/google/skyrim/var/frostflow: set dxio_tx_vboost_enable
Turn on the dxio_tx_vboost_enable for frostflow in coreboot.
It needs to confirm the PCIe Signal Integrity after enabled.
BUG=b:259007881, b:248221908
BRANCH=none
TEST=emerge-skyrim coreboot chromeos-bootimage
Signed-off-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Change-Id: Iaac331737c83ac7a4a1261c32151359e126a009e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71926
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb b/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
index 158c5ad..bfbaeac 100644
--- a/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
+++ b/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
@@ -27,6 +27,9 @@
}"
device domain 0 on
+
+ register "dxio_tx_vboost_enable" = "1"
+
device ref gpp_bridge_a on # Internal GPP Bridge 0 to Bus A
device ref xhci_1 on # XHCI1 controller
chip drivers/usb/acpi