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-rw-r--r--src/mainboard/lenovo/x201/dsdt.asl1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/x201/dsdt.asl b/src/mainboard/lenovo/x201/dsdt.asl
index 783122ecb3..0c921a6f9c 100644
--- a/src/mainboard/lenovo/x201/dsdt.asl
+++ b/src/mainboard/lenovo/x201/dsdt.asl
@@ -23,6 +23,7 @@
#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
#define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
+#define RP04_IS_EXPRESSCARD 1
DefinitionBlock(
"dsdt.aml",