mb/google/rex/var/screebo: Set `SAGV_POINTS_0_1_2` to avoid hang
Setting SaGvWpMask to SAGV_POINTS_0_1_2 in dev tree can effectively
avoid the idle hang issue, but it will affect the system power.
(Before root cause, this is a short term workaround to unblock function test.)
BUG=b:287170545
TEST=Able to idle for more than 5+ hours without any hang.
Signed-off-by: Wentao Qin <qinwentao@huaqin.corp-partner.google.com>
Change-Id: I0947815ab79b470d2ae922cffdd8250c60cf1afd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77520
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kane Chen <kane.chen@intel.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kun Liu <liukun11@huaqin.corp-partner.google.com>
diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb
index 772ba9c5..63db4bf 100644
--- a/src/mainboard/google/rex/variants/screebo/overridetree.cb
+++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb
@@ -54,6 +54,9 @@
# Temporary setting TCC of 80C = Tj max (110) - TCC_Offset (30)
register "tcc_offset" = "30"
+ # TODO(b/287170545): workaround avoid DUT random hang
+ register "sagv_wp_bitmap" = "SAGV_POINTS_0_1_2"
+
# Enable Display Port Configuration
register "ddi_ports_config" = "{
[DDI_PORT_A] = DDI_ENABLE_HPD,