From 85f2e12b4f1d66e723652a91e8765019e71f1c16 Mon Sep 17 00:00:00 2001 From: Nicolas Reinecke Date: Fri, 17 Oct 2014 15:09:05 +0200 Subject: [PATCH] lenovo/t520: Apply ME workaround for S3 resume Without this patch the laptop powers down after resume. Change-Id: Ic6486fd4c4cc55b1ac5695f9d6d83fc2193b7eba Signed-off-by: Nicolas Reinecke Reviewed-on: http://review.coreboot.org/7102 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko --- src/mainboard/lenovo/t520/acpi/platform.asl | 6 +++++- src/mainboard/lenovo/t520/dsdt.asl | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/src/mainboard/lenovo/t520/acpi/platform.asl b/src/mainboard/lenovo/t520/acpi/platform.asl index 5466bedc44..f937dc552a 100644 --- a/src/mainboard/lenovo/t520/acpi/platform.asl +++ b/src/mainboard/lenovo/t520/acpi/platform.asl @@ -68,6 +68,10 @@ Method(_PTS,1) Method(_WAK,1) { - /* Not implemented. */ + /* ME may not be up yet. */ + Store (0, \_TZ.MEB1) + Store (0, \_TZ.MEB2) + + /* Not implemented. */ Return(Package(){0,0}) } diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl index e48a5904bf..b6b4b332b5 100644 --- a/src/mainboard/lenovo/t520/dsdt.asl +++ b/src/mainboard/lenovo/t520/dsdt.asl @@ -24,6 +24,7 @@ #define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0 #define RP04_IS_EXPRESSCARD 1 +#define EC_LENOVO_H8_ME_WORKAROUND 1 #define HAVE_LCD_SCREEN 1 DefinitionBlock(