soc/intel/skylake: Enable another VR mailbox command for certain boards
Command List:
Send command for PS4 exit fails
BUG=chrome-os-partner:52355
BRANCH=glados
TEST=Build and boot lars and verify no hang during active idle
CQ-DEPEND=CL:*257305
Change-Id: I9ffae71b1a38433ffc48ee7be7e2a13e69ad5b87
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 96f00e2d153f92339c378ce256eb7ce6824e3368
Original-Change-Id: I320ae154f3f7145811b57258ddb61b3beb584273
Original-Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/341330
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14688
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/intel/kunimitsu/devicetree.cb b/src/mainboard/intel/kunimitsu/devicetree.cb
index 62a0c26..30039d8 100644
--- a/src/mainboard/intel/kunimitsu/devicetree.cb
+++ b/src/mainboard/intel/kunimitsu/devicetree.cb
@@ -173,6 +173,9 @@
# PL2 override 25W
register "tdp_pl2_override" = "25"
+ # Send an extra VR mailbox command for the PS4 exit issue
+ register "SendVrMbxCmd" = "2"
+
device cpu_cluster 0 on
device lapic 0 on end
end