src/mainboard/purism/librem_skl/devicetree.cb

chip soc/intel/skylake

	# IGD Displays
	register "gfx" = "GMA_STATIC_DISPLAYS(0)"

	register "panel_cfg" = "{
		.up_delay_ms		= 200,
		.down_delay_ms		=  50,
		.cycle_delay_ms		= 500,
		.backlight_on_delay_ms	=   1,
		.backlight_off_delay_ms	= 200,
		.backlight_pwm_hz	= 200,
	}"

	register "deep_s3_enable_ac" = "0"
	register "deep_s3_enable_dc" = "0"
	register "deep_s5_enable_ac" = "0"
	register "deep_s5_enable_dc" = "0"
	register "deep_sx_config" = "DSX_EN_LAN_WAKE_PIN"

	register "eist_enable" = "1"

	# Set the Thermal Control Circuit (TCC) activaction value to 95C
	# even though FSP integration guide says to set it to 100C for SKL-U
	# (offset at 0), because when the TCC activates at 100C, the CPU
	# will have already shut itself down from overheating protection.
	register "tcc_offset" = "5" # TCC of 95C

	# GPE configuration
	# Note that GPE events called out in ASL code rely on this
	# route. i.e. If this route changes then the affected GPE
	# offset bits also need to be changed.
	register "gpe0_dw0" = "GPP_C"
	register "gpe0_dw1" = "GPP_D"
	register "gpe0_dw2" = "GPP_E"

	# Disable DPTF
	register "dptf_enable" = "0"

	# FSP Configuration
	register "DspEnable" = "0"
	register "IoBufferOwnership" = "0"
	register "SkipExtGfxScan" = "1"
	register "SaGv" = "SaGv_Enabled"
	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
	register "PmConfigSlpS4MinAssert" = "1"		# 1s
	register "PmConfigSlpSusMinAssert" = "3"	# 500ms
	register "PmConfigSlpAMinAssert" = "3"		# 2s

	# EC/KBC requires continuous mode
	register "serirq_mode" = "SERIRQ_CONTINUOUS"

	# VR Settings Configuration for 4 Domains
	#+----------------+-----------+-----------+-------------+----------+
	#| Domain/Setting |     SA    |    IA     | GT Unsliced |    GT    |
	#+----------------+-----------+-----------+-------------+----------+
	#| Psi1Threshold  | 20A       | 20A       | 20A         | 20A      |
	#| Psi2Threshold  | 4A        | 5A        | 5A          | 5A       |
	#| Psi3Threshold  | 1A        | 1A        | 1A          | 1A       |
	#| Psi3Enable     | 1         | 1         | 1           | 1        |
	#| Psi4Enable     | 1         | 1         | 1           | 1        |
	#| ImonSlope      | 0         | 0         | 0           | 0        |
	#| ImonOffset     | 0         | 0         | 0           | 0        |
	#| IccMax         | 7A        | 34A       | 35A         | 35A      |
	#| VrVoltageLimit | 1.52V     | 1.52V     | 1.52V       | 1.52V    |
	#| AC LoadLine    | 15 mOhm   | 5.7 mOhm  | 5.2 mOhm    | 5.2 mOhm |
	#| DC LoadLine    | 14.3 mOhm | 4.83 mOhm | 4.2 mOhm    | 4.2 mOhm |
	#+----------------+-----------+-----------+-------------+----------+
	register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
		.vr_config_enable = 1,
		.psi1threshold = VR_CFG_AMP(20),
		.psi2threshold = VR_CFG_AMP(4),
		.psi3threshold = VR_CFG_AMP(1),
		.psi3enable = 1,
		.psi4enable = 1,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(7),
		.voltage_limit = 1520,
		.ac_loadline = 1500,
		.dc_loadline = 1430,
	}"

	register "domain_vr_config[VR_IA_CORE]" = "{
		.vr_config_enable = 1,
		.psi1threshold = VR_CFG_AMP(20),
		.psi2threshold = VR_CFG_AMP(5),
		.psi3threshold = VR_CFG_AMP(1),
		.psi3enable = 1,
		.psi4enable = 1,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(34),
		.voltage_limit = 1520,
		.ac_loadline = 570,
		.dc_loadline = 483,
	}"

	register "domain_vr_config[VR_GT_UNSLICED]" = "{
		.vr_config_enable = 1,
		.psi1threshold = VR_CFG_AMP(20),
		.psi2threshold = VR_CFG_AMP(5),
		.psi3threshold = VR_CFG_AMP(1),
		.psi3enable = 1,
		.psi4enable = 1,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(35),
		.voltage_limit = 1520,
		.ac_loadline = 520,
		.dc_loadline = 420,
	}"

	register "domain_vr_config[VR_GT_SLICED]" = "{
		.vr_config_enable = 1,
		.psi1threshold = VR_CFG_AMP(20),
		.psi2threshold = VR_CFG_AMP(5),
		.psi3threshold = VR_CFG_AMP(1),
		.psi3enable = 1,
		.psi4enable = 1,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(35),
		.voltage_limit = 1520,
		.ac_loadline = 520,
		.dc_loadline = 420,
	}"

	# Enable Root Ports 5 and 9
	register "PcieRpEnable[4]" = "1"
	register "PcieRpEnable[8]" = "1"

	# PL2 override 25W
	register "power_limits_config" = "{
		.tdp_pl2_override = 25,
	}"

	# Send an extra VR mailbox command for the PS4 exit issue
	register "SendVrMbxCmd" = "2"

	device domain 0 on
		device ref igpu		on  end
		device ref sa_thermal	on  end
		device ref south_xhci	on  end
		device ref south_xdci	on  end
		device ref thermal	on  end
		device ref sata		on
			register "SataPortsEnable" = "{
				[0] = 1,
				[2] = 1,
			}"
		end
		device ref pcie_rp5	on  end
		device ref pcie_rp9	on  end
		device ref lpc_espi	on
			# EC host command ranges are in 0x380-0x383 & 0x80-0x8f
			register "gen1_dec" = "0x00000381"
			chip drivers/pc80/tpm
				device pnp 0c31.0 on end
			end
		end
		device ref hda		on  end
		device ref smbus	on  end
		device ref fast_spi	on  end
	end
end