diff --git a/src/mainboard/hp/2570p/acpi/platform.asl b/src/mainboard/hp/2570p/acpi/platform.asl
index 79eddcb55d..fe0f936a61 100644
--- a/src/mainboard/hp/2570p/acpi/platform.asl
+++ b/src/mainboard/hp/2570p/acpi/platform.asl
@@ -15,9 +15,13 @@
 
 Method(_WAK,1)
 {
+	\_SB.PCI0.LPCB.EC0.ACPI = 1
+	\_SB.PCI0.LPCB.EC0.SLPT = 0
+
 	Return(Package(){0,0})
 }
 
 Method(_PTS,1)
 {
+	\_SB.PCI0.LPCB.EC0.SLPT = Arg0
 }
diff --git a/src/mainboard/hp/2760p/acpi/platform.asl b/src/mainboard/hp/2760p/acpi/platform.asl
index 79eddcb55d..fe0f936a61 100644
--- a/src/mainboard/hp/2760p/acpi/platform.asl
+++ b/src/mainboard/hp/2760p/acpi/platform.asl
@@ -15,9 +15,13 @@
 
 Method(_WAK,1)
 {
+	\_SB.PCI0.LPCB.EC0.ACPI = 1
+	\_SB.PCI0.LPCB.EC0.SLPT = 0
+
 	Return(Package(){0,0})
 }
 
 Method(_PTS,1)
 {
+	\_SB.PCI0.LPCB.EC0.SLPT = Arg0
 }
diff --git a/src/mainboard/hp/8460p/acpi/platform.asl b/src/mainboard/hp/8460p/acpi/platform.asl
index 79eddcb55d..fe0f936a61 100644
--- a/src/mainboard/hp/8460p/acpi/platform.asl
+++ b/src/mainboard/hp/8460p/acpi/platform.asl
@@ -15,9 +15,13 @@
 
 Method(_WAK,1)
 {
+	\_SB.PCI0.LPCB.EC0.ACPI = 1
+	\_SB.PCI0.LPCB.EC0.SLPT = 0
+
 	Return(Package(){0,0})
 }
 
 Method(_PTS,1)
 {
+	\_SB.PCI0.LPCB.EC0.SLPT = Arg0
 }
diff --git a/src/mainboard/hp/8470p/acpi/platform.asl b/src/mainboard/hp/8470p/acpi/platform.asl
index 79eddcb55d..fe0f936a61 100644
--- a/src/mainboard/hp/8470p/acpi/platform.asl
+++ b/src/mainboard/hp/8470p/acpi/platform.asl
@@ -15,9 +15,13 @@
 
 Method(_WAK,1)
 {
+	\_SB.PCI0.LPCB.EC0.ACPI = 1
+	\_SB.PCI0.LPCB.EC0.SLPT = 0
+
 	Return(Package(){0,0})
 }
 
 Method(_PTS,1)
 {
+	\_SB.PCI0.LPCB.EC0.SLPT = Arg0
 }