diff --git a/src/mainboard/asus/p5gc-mx/devicetree.cb b/src/mainboard/asus/p5gc-mx/devicetree.cb
index 7064feb10b..824beedb92 100644
--- a/src/mainboard/asus/p5gc-mx/devicetree.cb
+++ b/src/mainboard/asus/p5gc-mx/devicetree.cb
@@ -85,29 +85,43 @@ chip northbridge/intel/i945
 
 			device pci 1f.0 on # LPC bridge
 				ioapic_irq 2 INTA 0x10
-				device pnp 2e.0 on # Floppy
-					io 0x60 = 0x3f0
-					irq 0x70 = 6
-					drq 0x74 = 2
-				end
-				device pnp 2e.1 on # Parallel port
-					io 0x60 = 0x378
-					irq 0x70 = 7
-					drq 0x74 = 3
-				end
-				device pnp 2e.2 on # COM1
-					io 0x60 = 0x3f8
-					irq 0x70 = 4
-				end
-				device pnp 2e.3 on # COM2
-					io 0x60 = 0x2f8
-					irq 0x70 = 3
-				end
-				device pnp 2e.5 on # Keyboard
-					io 0x60 = 0x60
-					io 0x62 = 0x64
-					irq 0x70 = 1 # Keyboard
-					irq 0x72 = 12 # Mouse
+				chip superio/winbond/w83627dhg
+					device pnp 2e.0 on # Floppy
+						io 0x60 = 0x3f0
+						irq 0x70 = 6
+						drq 0x74 = 2
+					end
+					device pnp 2e.1 on # Parallel port
+						io 0x60 = 0x378
+						irq 0x70 = 7
+						drq 0x74 = 3
+					end
+					device pnp 2e.2 on # COM1
+						io 0x60 = 0x3f8
+						irq 0x70 = 4
+					end
+					device pnp 2e.3 on # COM2
+						io 0x60 = 0x2f8
+						irq 0x70 = 3
+					end
+					device pnp 2e.5 on # Keyboard
+						io 0x60 = 0x60
+						io 0x62 = 0x64
+						irq 0x70 = 1 # Keyboard
+						irq 0x72 = 12 # Mouse
+					end
+					device pnp 2e.6 off end # SPI
+					device pnp 2e.7 on end # GPIO6
+					device pnp 2e.8 off end # WDTO# & PLED
+					device pnp 2e.9 on end # GPIO2-5
+					device pnp 2e.a on # ACPI
+						irq 0x70 = 0
+					end
+					device pnp 2e.b on # HWM
+						io 0x60 = 0x290
+						irq 0x70 = 0
+					end
+					device pnp 2e.c on end # PECI, SST
 				end
 			end
 			device pci 1f.1 on # IDE