diff --git a/src/northbridge/intel/haswell/acpi/ctdp.asl b/src/northbridge/intel/haswell/acpi/ctdp.asl
index 84c0f2f..47b7940 100644
--- a/src/northbridge/intel/haswell/acpi/ctdp.asl
+++ b/src/northbridge/intel/haswell/acpi/ctdp.asl
@@ -79,13 +79,13 @@
 	/* Calculate PL2 based on chip type */
 	Method (CPL2, 1, NotSerialized)
 	{
-		If (\ISLP ()) {
-			/* Haswell ULT PL2 = 25W */
-			Return (25 * 8)
-		} Else {
-			/* Haswell Mobile PL2 = 1.25 * PL1 */
-			Return ((Arg0 * 125) / 100)
-		}
+#if CONFIG(INTEL_LYNXPOINT_LP)
+		/* Haswell ULT PL2 = 25W */
+		Return (25 * 8)
+#else
+		/* Haswell Mobile PL2 = 1.25 * PL1 */
+		Return ((Arg0 * 125) / 100)
+#endif
 	}
 
 	/* Set Config TDP Down */
diff --git a/src/southbridge/intel/lynxpoint/acpi/pch.asl b/src/southbridge/intel/lynxpoint/acpi/pch.asl
index 40d206d..6829cff 100644
--- a/src/southbridge/intel/lynxpoint/acpi/pch.asl
+++ b/src/southbridge/intel/lynxpoint/acpi/pch.asl
@@ -10,12 +10,6 @@
 
 Scope (\)
 {
-	// Return TRUE if chipset is LynxPoint-LP
-	Method (ISLP, 0, NotSerialized)
-	{
-		Return (CONFIG(INTEL_LYNXPOINT_LP))
-	}
-
 	// IO-Trap at 0x800. This is the ACPI->SMI communication interface.
 	OperationRegion (IO_T, SystemIO, 0x800, 0x10)
 	Field (IO_T, ByteAcc, NoLock, Preserve)
diff --git a/src/southbridge/intel/lynxpoint/acpi/xhci.asl b/src/southbridge/intel/lynxpoint/acpi/xhci.asl
index 65f1869..fbeb562 100644
--- a/src/southbridge/intel/lynxpoint/acpi/xhci.asl
+++ b/src/southbridge/intel/lynxpoint/acpi/xhci.asl
@@ -213,26 +213,27 @@
 			^D0D3 = 0
 		}
 
-		If (\ISLP ()) {
-			// Clear PCI 0xB0[14:13]
-			^MB13 = 0
-			^MB14 = 0
+#if CONFIG(INTEL_LYNXPOINT_LP)
+		// Clear PCI 0xB0[14:13]
+		^MB13 = 0
+		^MB14 = 0
 
-			// Clear MMIO 0x816C[14,2]
-			CLK0 = 0
-			CLK1 = 0
-		}
+		// Clear MMIO 0x816C[14,2]
+		CLK0 = 0
+		CLK1 = 0
 
 		// Set MMIO 0x8154[31]
 		CLK2 = 1
 
-		If (\ISLP ()) {
-			// Handle per-port reset if needed
-			LPS0 ()
+		// Handle per-port reset if needed
+		LPS0 ()
 
-			// Set MMIO 0x80e0[15]
-			AX15 = 1
-		}
+		// Set MMIO 0x80e0[15]
+		AX15 = 1
+#else
+		// Set MMIO 0x8154[31]
+		CLK2 = 1
+#endif
 
 		Return ()
 	}
@@ -271,23 +272,24 @@
 			^D0D3 = 0
 		}
 
-		If (\ISLP ()) {
-			// Set PCI 0xB0[14:13]
-			^MB13 = 1
-			^MB14 = 1
+#if CONFIG(INTEL_LYNXPOINT_LP)
+		// Set PCI 0xB0[14:13]
+		^MB13 = 1
+		^MB14 = 1
 
-			// Set MMIO 0x816C[14,2]
-			CLK0 = 1
-			CLK1 = 1
-		}
+		// Set MMIO 0x816C[14,2]
+		CLK0 = 1
+		CLK1 = 1
 
 		// Clear MMIO 0x8154[31]
 		CLK2 = 0
 
-		If (\ISLP ()) {
-			// Clear MMIO 0x80e0[15]
-			AX15 = 0
-		}
+		// Clear MMIO 0x80e0[15]
+		AX15 = 0
+#else
+		// Clear MMIO 0x8154[31]
+		CLK2 = 0
+#endif
 
 		// Put device in D3
 		^D0D3 = 3