From 3cb09273c1d890b955229acdb737872bcfb13819 Mon Sep 17 00:00:00 2001 From: Frank Chu Date: Wed, 3 May 2023 14:06:48 +0800 Subject: mb/google/brya/var/marasov: Disable Tccold Handshake The patch disables Tccold Handshake to prevent possible display flicker issue for marasov board. Please refer to Intel doc#723158 for more information. BUG=b:279117758 BRANCH=firmware-brya-14505.B TEST=Boot to OS on marasov. Signed-off-by: Frank Chu Change-Id: I286e88e5bec240d64e6c801648f6483ad2b0939c Reviewed-on: https://review.coreboot.org/c/coreboot/+/74931 Reviewed-by: Frank Chu Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai --- src/mainboard/google/brya/variants/marasov/overridetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mainboard/google/brya/variants/marasov/overridetree.cb b/src/mainboard/google/brya/variants/marasov/overridetree.cb index 075acf8e68..dfbf3f61df 100644 --- a/src/mainboard/google/brya/variants/marasov/overridetree.cb +++ b/src/mainboard/google/brya/variants/marasov/overridetree.cb @@ -88,7 +88,7 @@ chip soc/intel/alderlake # As per Intel Advisory doc#723158, the change is required to prevent possible # display flickering issue. - register "usb2_phy_sus_pg_disable" = "1" + register "disable_dynamic_tccold_handshake" = "true" register "serial_io_i2c_mode" = "{ [PchSerialIoIndexI2C0] = PchSerialIoPci, -- cgit v1.2.3