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authorDtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>2023-04-25 14:28:48 +0800
committerFelix Held <felix-coreboot@felixheld.de>2023-04-26 12:06:03 +0000
commit87389bcb5eb2a2aa032f28518f3ccb642118a634 (patch)
tree803471f7334ea9157ccddc7e54089782f4638a93 /src/mainboard
parent854bd492fcfa01901fbf8ac39b539b55a7b45ba5 (diff)
mb/google/brya/var/omnigul: Disable Tccold Handshake
The patch disables Tccold Handshake to prevent possible display flicker issue for Omnigul board. Please refer to Intel doc#723158 for more information. BUG=b:279539826 BRANCH=firmware-brya-14505.B TEST=Verify the build for Omnigul board Change-Id: I04e54df5afe09c12e1cf774445d57e13ffd8819e Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/74737 Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subratabanik@google.com>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/brya/variants/omnigul/overridetree.cb4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/omnigul/overridetree.cb b/src/mainboard/google/brya/variants/omnigul/overridetree.cb
index 760ee82fcd..dd78eda680 100644
--- a/src/mainboard/google/brya/variants/omnigul/overridetree.cb
+++ b/src/mainboard/google/brya/variants/omnigul/overridetree.cb
@@ -10,6 +10,10 @@ chip soc/intel/alderlake
register "sagv" = "SaGv_Enabled"
+ # As per Intel Advisory doc#723158, the change is required to prevent possible
+ # display flickering issue.
+ register "disable_dynamic_tccold_handshake" = "true"
+
# Intel Common SoC Config
#+-------------------+---------------------------+
#| Field | Value |