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diff --git a/src/mainboard/asus/p8z77-m_pro/devicetree.cb b/src/mainboard/asus/p8z77-m_pro/devicetree.cb
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index 0000000000..4f5e5bf9bb
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+++ b/src/mainboard/asus/p8z77-m_pro/devicetree.cb
@@ -0,0 +1,109 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2019 Vlado Cibic <vladocb@protonmail.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+
+chip northbridge/intel/sandybridge
+ register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410 }"
+ register "gfx.ndid" = "3"
+ device cpu_cluster 0x0 on
+ chip cpu/intel/model_206ax
+ register "c1_acpower" = "1"
+ register "c1_battery" = "1"
+ register "c2_acpower" = "3"
+ register "c2_battery" = "3"
+ register "c3_acpower" = "5"
+ register "c3_battery" = "5"
+ device lapic 0x0 on end
+ device lapic 0xacac off end
+ end
+ end
+ device domain 0x0 on
+ subsystemid 0x1043 0x84ca inherit
+ device pci 00.0 on end # Host bridge
+ device pci 01.0 on end # PCIe Bridge for discrete graphics
+ device pci 02.0 on end # Internal graphics VGA controller
+ chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
+ register "c2_latency" = "0x0065"
+ register "gen1_dec" = "0x000c0291"
+ register "gen4_dec" = "0x0000ff29"
+ register "pcie_port_coalesce" = "1"
+ register "sata_interface_speed_support" = "0x3" # 0x3=SATAIII
+ register "sata_port_map" = "0x3f" # Enable the six SATA ports
+ register "spi_lvscc" = "0x2005"
+ register "spi_uvscc" = "0x2005"
+ register "superspeed_capable_ports" = "0x0000000f"
+ register "xhci_overcurrent_mapping" = "0x00000c03"
+ register "xhci_switchable_ports" = "0x0000000f" # the 4 ports
+ device pci 14.0 on end # USB 3.0 Controller
+ 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 end # USB2 EHCI 2
+ device pci 1b.0 on end # High Definition Audio controller
+ device pci 1c.0 on end # PCIe Root Port 1 PCIEX_16_3
+ device pci 1c.1 on end # PCIe Root Port 6 RTL8111F
+ device pci 1c.2 off end # PCIe Port 3 unused
+ device pci 1c.3 off end # PCIe Port 4 unused
+ device pci 1c.4 off end # PCIe Port 5 unused
+ device pci 1c.5 on end # PCIe Root Port 7 ASM1042 USB3
+ device pci 1c.6 on end # PCIe Root Port 8 ASM1061 eSATA
+ device pci 1c.7 off end # PCIe Port 8 unused
+ device pci 1d.0 on end # USB2 EHCI 1
+ device pci 1e.0 off end # PCI bridge
+ device pci 1f.0 on # LPC bridge
+ chip superio/nuvoton/nct6779d
+ device pnp 2e.1 off end # Parallel
+ device pnp 2e.2 off end # UART A
+ device pnp 2e.3 on # UART B, IR
+ io 0x60 = 0x2f8 # COM2 address
+ end
+ device pnp 2e.5 on # PS2 KBC
+ io 0x60 = 0x0060 # KBC1 base
+ io 0x62 = 0x0064 # KBC2 base
+ irq 0x70 = 1 # Keyboard IRQ
+ irq 0x72 = 12 # Mouse IRQ
+
+ # KBC 12Mhz/A20 speed/sw KBRST
+ drq 0xf0 = 0x82
+ end
+ device pnp 2e.6 off end # CIR
+ device pnp 2e.7 on end # GPIOs 6-8
+ device pnp 2e.8 off end # WDT1 GPIO 0-1
+ device pnp 2e.9 off end # GPIO 1-8
+ device pnp 2e.a on # ACPI
+ drq 0xe4 = 0x10 # Enable 3VSBS to power RAM on S3
+ drq 0xe7 = 0x10 # 0.5s S3 delay for compatibility
+ end
+ device pnp 2e.b off end # HWM, LED
+ device pnp 2e.d off end # WDT1
+ device pnp 2e.e off end # CIR wake-up
+ device pnp 2e.f on # GPIO PP/OD
+ drq 0xe6 = 0x7f # GP7 PP
+ end
+ device pnp 2e.14 on end # Port 80 UART
+ device pnp 2e.16 off end # Deep sleep
+ end
+ chip drivers/pc80/tpm
+ device pnp 4e.0 on end # TPM module
+ end
+ end
+ device pci 1f.2 on end # SATA Controller 1
+ device pci 1f.3 on end # SMBus
+ device pci 1f.5 off end # SATA Controller 2
+ device pci 1f.6 off end # Thermal
+ end
+ end
+end