From feab4a4dff60dd7e3b9406123779144521300041 Mon Sep 17 00:00:00 2001 From: Ricky Chang Date: Fri, 4 Nov 2022 13:22:35 +0000 Subject: mb/google/brask: Disable PCH USB2 phy power gating for brask The patch disables PCH USB2 Phy power gating to prevent possible display flicker issue for moli board. Please refer Intel doc#723158 for more information. BUG=b:257415959 TEST=Verify the build for brask board Change-Id: I518e90e9032e8f2186300b6b907cc9d84a1682e4 Signed-off-by: Ricky Chang Reviewed-on: https://review.coreboot.org/c/coreboot/+/69272 Tested-by: build bot (Jenkins) Reviewed-by: Zhuohao Lee Reviewed-by: Subrata Banik --- src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src') diff --git a/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb index 0d60a57201..29fb5d076b 100644 --- a/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb +++ b/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb @@ -1,4 +1,7 @@ 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" # GPE configuration register "pmc_gpe0_dw0" = "GPP_A" -- cgit v1.2.3