src/mainboard/lenovo/t420/devicetree.cb

chip northbridge/intel/sandybridge
	# IGD Displays
	register "gfx" = "GMA_STATIC_DISPLAYS(1)"

	# Enable DisplayPort Hotplug with 6ms pulse
	register "gpu_dp_d_hotplug" = "0x06"

	# Enable Panel as LVDS and configure power delays
	register "gpu_panel_port_select" = "PANEL_PORT_LVDS"
	register "gpu_panel_power_cycle_delay" = "1"
	register "gpu_panel_power_up_delay" = "300"		# T1+T2: 30ms
	register "gpu_panel_power_down_delay" = "300"		# T5+T6: 30ms
	register "gpu_panel_power_backlight_on_delay" = "2000"	# T3: 200ms
	register "gpu_panel_power_backlight_off_delay" = "2000"	# T4: 200ms
	register "gpu_cpu_backlight" = "0x1155"
	register "gpu_pch_backlight" = "0x06100610"

	device domain 0 on
		subsystemid 0x17aa 0x21ce inherit

		device ref host_bridge on end # host bridge
		device ref peg10 on end # PCIe Bridge for discrete graphics
		device ref igd on end # Integrated Graphics Controller

		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
			# GPI routing
			#  0 No effect (default)
			#  1 SMI# (if corresponding ALT_GPI_SMI_EN bit is also set)
			#  2 SCI (if corresponding GPIO_EN bit is also set)
			register "alt_gp_smi_en" = "0x0000"
			register "gpi1_routing" = "2"
			register "gpi13_routing" = "2"

			# Enable SATA ports 0 (HDD bay) & 1 (ODD bay) & 2 (mSATA) & 3 (eSATA) & 4 (dock)
			register "sata_port_map" = "0x1f"
			# Set max SATA speed to 6.0 Gb/s
			register "sata_interface_speed_support" = "0x3"

			register "gen1_dec" = "0x7c1601"
			register "gen2_dec" = "0x0c15e1"
			register "gen4_dec" = "0x0c06a1"

			register "pcie_hotplug_map" = "{ 0, 0, 0, 1, 0, 0, 0, 0 }"

			# Enable zero-based linear PCIe root port functions
			register "pcie_port_coalesce" = "true"

			# device specific SPI configuration
			register "spi_uvscc" = "0x2005"
			register "spi_lvscc" = "0x2005"

			device ref mei1 on  end # Management Engine Interface 1
			device ref mei2 off end # Management Engine Interface 2
			device ref me_ide_r off end # Management Engine IDE-R
			device ref me_kt off end # Management Engine KT
			device ref gbe on end # Intel Gigabit Ethernet
			device ref ehci2 on end # USB Enhanced Host Controller #2
			device ref hda on end # High Definition Audio Controller
			device ref pcie_rp1 off end # PCIe Port #1
			device ref pcie_rp2 on end # PCIe Port #2 Integrated Wireless LAN
			device ref pcie_rp3 off end # PCIe Port #3
			device ref pcie_rp4 on
				smbios_slot_desc "7" "3" "ExpressCard Slot" "8"
			end # PCIe Port #4 ExpressCard
			device ref pcie_rp5 on
				chip drivers/ricoh/rce822
					register "sdwppol" = "1"
					register "disable_mask" = "0x87"
					device pci 00.0 on end
				end
			end # PCIe Port #5 (Ricoh SD & FW)
			device ref pcie_rp6 off end # PCIe Port #6 Intel Gigabit Ethernet PHY (not PCIe)
			device ref pcie_rp7 off end # PCIe Port #7
			device ref pcie_rp8 off end # PCIe Port #8
			device ref ehci1 on end # USB Enhanced Host Controller #1
			device ref pci_bridge off end # PCI bridge
			device ref lpc on
				chip ec/lenovo/pmh7
					device pnp ff.1 on end # dummy
					register "backlight_enable" = "0x01"
					register "dock_event_enable" = "0x01"
				end

				chip drivers/pc80/tpm
					device pnp 0c31.0 on end
				end

				chip ec/lenovo/h8
					device pnp ff.2 on # dummy
						io 0x60 = 0x62
						io 0x62 = 0x66
						io 0x64 = 0x1600
						io 0x66 = 0x1604
					end

					register "config0" = "0xa7"
					register "config1" = "0x01"
					register "config2" = "0xa0"
					register "config3" = "0xe2"

					register "has_keyboard_backlight" = "0"

					register "beepmask0" = "0x02"
					register "beepmask1" = "0x86"
					register "has_power_management_beeps" = "1"
					register "event2_enable" = "0xff"
					register "event3_enable" = "0xff"
					register "event4_enable" = "0xf0"
					register "event5_enable" = "0x3c"
					register "event6_enable" = "0x00"
					register "event7_enable" = "0xa1"
					register "event8_enable" = "0x7b"
					register "event9_enable" = "0xff"
					register "eventa_enable" = "0x00"
					register "eventb_enable" = "0x00"
					register "eventc_enable" = "0xff"
					register "eventd_enable" = "0xff"
					register "evente_enable" = "0x0d"

					register "has_bdc_detection" = "1"
					register "bdc_gpio_num" = "54"
					register "bdc_gpio_lvl" = "0"
				end
				chip drivers/lenovo/hybrid_graphics
					device pnp ff.f on end # dummy

					register "detect_gpio" = "21"

					register "has_panel_hybrid_gpio" = "1"
					register "panel_hybrid_gpio" = "52"
					register "panel_integrated_lvl" = "1"

					register "has_backlight_gpio" = "0"
					register "has_dgpu_power_gpio" = "0"

					register "has_thinker1" = "1"
				end
			end # LPC Controller
			device ref sata1 on end # 6 port SATA AHCI Controller
			device ref smbus on
				# eeprom, 8 virtual devices, same chip
				chip drivers/i2c/at24rf08c
					device i2c 54 on end
					device i2c 55 on end
					device i2c 56 on end
					device i2c 57 on end
					device i2c 5c on end
					device i2c 5d on end
					device i2c 5e on end
					device i2c 5f on end
				end
			end # SMBus Controller
			device ref sata2 off end # SATA Controller 2
			device ref thermal on end # Thermal
		end
	end
end