From 8fdfa30255b3834adf314f68a5871c8a291b32a2 Mon Sep 17 00:00:00 2001 From: Tim Crawford Date: Tue, 13 Sep 2022 14:56:28 -0600 Subject: [PATCH] mb/system76: Set gfx register Fixes brightness controls on Windows 10. Change-Id: I33ac1b5a17c95dbb1b166c38fcd639cdac439724 Signed-off-by: Tim Crawford Reviewed-on: https://review.coreboot.org/c/coreboot/+/67636 Tested-by: build bot (Jenkins) Reviewed-by: Jeremy Soller --- src/mainboard/system76/gaze16/devicetree.cb | 2 ++ src/mainboard/system76/lemp9/devicetree.cb | 4 +++- src/mainboard/system76/oryp8/devicetree.cb | 2 ++ 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/src/mainboard/system76/gaze16/devicetree.cb b/src/mainboard/system76/gaze16/devicetree.cb index ec46554616..e26fe629b4 100644 --- a/src/mainboard/system76/gaze16/devicetree.cb +++ b/src/mainboard/system76/gaze16/devicetree.cb @@ -95,6 +95,8 @@ chip soc/intel/tigerlake register "DdiPortBConfig" = "DDI_PORT_CFG_NO_LFP" register "DdiPortBHpd" = "1" register "DdiPortBDdc" = "1" + + register "gfx" = "GMA_DEFAULT_PANEL(0)" end device ref dptf on end device ref gna on end diff --git a/src/mainboard/system76/lemp9/devicetree.cb b/src/mainboard/system76/lemp9/devicetree.cb index 961a085c35..77ba265ea9 100644 --- a/src/mainboard/system76/lemp9/devicetree.cb +++ b/src/mainboard/system76/lemp9/devicetree.cb @@ -61,7 +61,9 @@ chip soc/intel/cannonlake device domain 0 on subsystemid 0x1558 0x1401 inherit device pci 00.0 on end # Host Bridge - device pci 02.0 on end # Integrated Graphics Device + device pci 02.0 on # Integrated Graphics Device + register "gfx" = "GMA_DEFAULT_PANEL(0)" + end device pci 04.0 on # SA Thermal device register "Device4Enable" = "1" end diff --git a/src/mainboard/system76/oryp8/devicetree.cb b/src/mainboard/system76/oryp8/devicetree.cb index 4d55c346b7..01593cb081 100644 --- a/src/mainboard/system76/oryp8/devicetree.cb +++ b/src/mainboard/system76/oryp8/devicetree.cb @@ -108,6 +108,8 @@ chip soc/intel/tigerlake register "DdiPortAConfig" = "DDI_PORT_CFG_EDP" register "DdiPortAHpd" = "1" register "DdiPortADdc" = "0" + + register "gfx" = "GMA_DEFAULT_PANEL(0)" end device ref dptf on end device ref peg0 on