From 5c35d30ffc7382af46b62044a5cf5326b1e57708 Mon Sep 17 00:00:00 2001 From: Wentao Qin Date: Tue, 29 Aug 2023 20:09:21 +0800 Subject: 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 Change-Id: I0947815ab79b470d2ae922cffdd8250c60cf1afd Reviewed-on: https://review.coreboot.org/c/coreboot/+/77520 Reviewed-by: Subrata Banik Reviewed-by: Kane Chen Tested-by: build bot (Jenkins) Reviewed-by: Kun Liu --- src/mainboard/google/rex/variants/screebo/overridetree.cb | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb index 772ba9c508..63db4bfade 100644 --- a/src/mainboard/google/rex/variants/screebo/overridetree.cb +++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb @@ -54,6 +54,9 @@ chip soc/intel/meteorlake # 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, -- cgit v1.2.3