From 48c1bf491bbafb252b05df68c72d18fc93ac0d24 Mon Sep 17 00:00:00 2001 From: Wisley Chen Date: Mon, 24 Jul 2023 08:34:35 +0600 Subject: [PATCH] mb/google/brya/var/redrix: Disable PCH USB2 phy power gating The patch disables PCH USB2 Phy power gating to prevent possible display flicker issue for redrix board. Please refer Intel doc#723158 for more information. BUG=b:292435264 TEST=build and boot redrix Change-Id: I34d10c763f4710d2c5678704320fd1cc8d8b6287 Signed-off-by: Wisley Chen Reviewed-on: https://review.coreboot.org/c/coreboot/+/76670 Reviewed-by: Eric Lai Tested-by: build bot (Jenkins) --- src/mainboard/google/brya/variants/redrix/overridetree.cb | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/mainboard/google/brya/variants/redrix/overridetree.cb b/src/mainboard/google/brya/variants/redrix/overridetree.cb index d70871412a..26b15e2764 100644 --- a/src/mainboard/google/brya/variants/redrix/overridetree.cb +++ b/src/mainboard/google/brya/variants/redrix/overridetree.cb @@ -32,6 +32,11 @@ fw_config end 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 "usb2_phy_sus_pg_disable" = "1" + register "cnvi_bt_audio_offload" = "true" # FIVR RFI Spread Spectrum 6% register "fivr_spread_spectrum" = "FIVR_SS_6"