src/mainboard/lenovo/t420/devicetree.cb

chip northbridge/intel/sandybridge
	# IGD Displays
	register "gfx.ndid" = "3"
	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"

	# 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" = "0"			# 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 "gfx.use_spread_spectrum_clock" = "1"
	register "gpu_cpu_backlight" = "0x1155"
	register "gpu_pch_backlight" = "0x06100610"

	device cpu_cluster 0 on
		chip cpu/intel/model_206ax
			# Magic APIC ID to locate this chip
			device lapic 0x0 on end
			device lapic 0xacac off end

			register "c1_acpower" = "1"	# ACPI(C1) = MWAIT(C1)
			register "c2_acpower" = "3"	# ACPI(C2) = MWAIT(C3)
			register "c3_acpower" = "5"	# ACPI(C3) = MWAIT(C7)

			register "c1_battery" = "1"	# ACPI(C1) = MWAIT(C1)
			register "c2_battery" = "3"	# ACPI(C2) = MWAIT(C3)
			register "c3_battery" = "5"	# ACPI(C3) = MWAIT(C7)
		end
	end

	register "pci_mmio_size" = "2048"

	device domain 0 on
		subsystemid 0x17aa 0x21ce 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 # 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" = "1"

			register "c2_latency" = "101"  # c2 not supported

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

			device pci 16.0 off 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 on end # Intel Gigabit Ethernet
			device pci 1a.0 on end # USB Enhanced Host Controller #2
			device pci 1b.0 on end # High Definition Audio Controller
			device pci 1c.0 off end # PCIe Port #1
			device pci 1c.1 on end # PCIe Port #2 Integrated Wireless LAN
			device pci 1c.2 off end # PCIe Port #3
			device pci 1c.3 on
				smbios_slot_desc "7" "3" "ExpressCard Slot" "8"
			end # PCIe Port #4 ExpressCard
			device pci 1c.4 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 pci 1c.5 off end # PCIe Port #6 Intel Gigabit Ethernet PHY (not PCIe)
			device pci 1c.6 off end # PCIe Port #7
			device pci 1c.7 off end # PCIe Port #8
			device pci 1d.0 on end # USB Enhanced Host Controller #1
			device pci 1e.0 off end # PCI bridge
			device pci 1f.0 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 pci 1f.2 on end # 6 port SATA AHCI Controller
			device pci 1f.3 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 pci 1f.5 off end # SATA Controller 2
			device pci 1f.6 on end # Thermal
		end
	end
end