diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
new file mode 100644
index 0000000..20f88cb
--- /dev/null
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
@@ -0,0 +1,117 @@
+chip northbridge/intel/sandybridge
+	device cpu_cluster 0 on
+		chip cpu/intel/socket_LGA1155
+			device lapic 0 on end
+		end
+		chip cpu/intel/model_206ax
+			register "pstate_coord_type" = "0xfe"
+			register "c1_acpower" = "1"
+			register "c2_acpower" = "3"
+			register "c3_acpower" = "5"
+			register "c1_battery" = "1"
+			register "c2_battery" = "3"
+			register "c3_battery" = "5"
+			# Magic APIC ID to locate this chip
+			device lapic 0xACAC off end
+		end
+	end
+
+	device domain 0 on
+		subsystemid 0x1458 0x5000 inherit
+		device pci 00.0 on # host bridge
+			subsystemid 0x1458 0x5000
+		end
+		device pci 01.0 off end # PCIe Bridge for discrete graphics
+		device pci 02.0 on # vga controller
+			subsystemid 0x1458 0xd000
+		end
+
+		chip southbridge/intel/bd82x6x # Intel Series 7 Panther Point PCH
+
+			# GPI routing
+			register "alt_gp_smi_en" = "0x0000"
+			register "gen1_dec" = "0x003c0a01"
+
+			# Set max SATA speed to 6.0 Gb/s
+			register "sata_port_map" = "0x3f"
+			register "sata_interface_speed_support" = "0x3"
+
+			register "pcie_port_coalesce" = "0"
+			register "p_cnt_throttling_supported" = "0"
+			register "docking_supported" = "0"
+			register "sata_port_map" = "0x3f"
+			register "c2_latency" = "0x0065"
+
+			device pci 14.0 on # USB 3.0 Controller
+				subsystemid 0x1458 0x5007
+			end
+			device pci 16.0 on end # Management Engine Interface 1
+			device pci 16.1 off end # Management Engine Interface 2
+			device pci 16.2 off end # Management Engine IDE-R
+			device pci 16.3 off end # Management Engine KT
+			device pci 19.0 off end # Intel Gigabit Ethernet
+			device pci 1a.0 on # USB2 EHCI #2
+				subsystemid 0x1458 0x5006
+			end
+			device pci 1b.0 on # High Definition Audio
+				subsystemid 0x1458 0xa002
+			end
+			device pci 1c.0 off end # PCIe Port #1
+			device pci 1c.1 off end # PCIe Port #2
+			device pci 1c.2 off end # PCIe Port #3
+			device pci 1c.3 off end # PCIe Port #4
+			device pci 1c.4 on # PCIe Port #5
+				device pci 00.0 on # PCI 10ec:8168
+					subsystemid 0x1458 0xe000
+				end
+			end
+			device pci 1c.5 off end # PCIe Port #6
+			device pci 1c.6 off end # PCIe Port #7
+			device pci 1c.7 off end # PCIe Port #8
+			device pci 1d.0 on # USB2 EHCI #1
+				subsystemid 0x1458 0x5006
+			end
+			device pci 1e.0 on end # PCI bridge
+			device pci 1f.0 on # ISA/LPC bridge
+				subsystemid 0x1458 0x5001
+				chip superio/ite/it8728f
+					device pnp 2e.0 off end # FDC
+					device pnp 2e.1 on # Serial Port 1
+						io 0x60 = 0x3f8
+						irq 0x70 = 4
+					end
+					device pnp 2e.2 on
+						io 0x60 = 0x2f8
+						irq 0x70 = 3
+					end
+					device pnp 2e.3 on
+						io 0x60 = 0x378
+						irq 0x70 = 7
+						drq 0x74 = 4
+					end
+					device pnp 2e.4 on # EC
+						irq 0x70 = 9
+					end
+					device pnp 2e.5 on # Keyboard
+						irq 0x70 = 1
+					end
+					device pnp 2e.6 on # Mouse
+						irq 0x70 = 12
+					end
+					device pnp 2e.7 on # GPIO
+						irq 0x70 = 0
+					end
+					device pnp 2e.a off end # IR
+				end
+			end
+			device pci 1f.2 on # SATA Controller 1
+				subsystemid 0x1458 0xb005
+			end
+			device pci 1f.3 on # SMBus
+				subsystemid 0x1458 0x5001
+			end
+			device pci 1f.4 off end
+			device pci 1f.5 off end # SATA Controller 2
+		end
+	end
+end