system76-coreboot/src/mainboard/system76/kbl-u/devicetree.cb

# SPDX-License-Identifier: GPL-2.0-only

chip soc/intel/skylake
	# Send an extra VR mailbox command for the PS4 exit issue
	register "SendVrMbxCmd" = "2"

	# Power limit
	register "power_limits_config" = "{
		.tdp_pl1_override = 20,
		.tdp_pl2_override = 30,
	}"

	# Enable Enhanced Intel SpeedStep
	register "eist_enable" = "1"

	# Serial I/O
	register "SerialIoDevMode" = "{
		[PchSerialIoIndexUart2] = PchSerialIoSkipInit, // LPSS UART
	}"

	# Serial IRQ
	register "serirq_mode" = "SERIRQ_CONTINUOUS"

	# Power
	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
	register "PmConfigSlpS4MinAssert" = "1"		# 1s
	register "PmConfigSlpSusMinAssert" = "3"	# 500ms
	register "PmConfigSlpAMinAssert" = "3"		# 2s

	# FSP Configuration
	register "SkipExtGfxScan" = "1"
	register "SaGv" = "SaGv_Enabled"

	# 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         | 5A        | 64A       | 31A         | 31A      |
	#| VrVoltageLimit | 1.52V     | 1.52V     | 1.52V       | 1.52V    |
	#+----------------+-----------+-----------+-------------+----------+
	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 = 0,
		.psi4enable = 0,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(5),
		.voltage_limit = 1520,
		.ac_loadline = 1030,
		.dc_loadline = 1030,
	}"

	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 = 0,
		.psi4enable = 0,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(64),
		.voltage_limit = 1520,
		.ac_loadline = 240,
		.dc_loadline = 240,
	}"

	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 = 0,
		.psi4enable = 0,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(31),
		.voltage_limit = 1520,
		.ac_loadline = 310,
		.dc_loadline = 310,
	}"

	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 = 0,
		.psi4enable = 0,
		.imon_slope = 0x0,
		.imon_offset = 0x0,
		.icc_max = VR_CFG_AMP(31),
		.voltage_limit = 1520,
		.ac_loadline = 310,
		.dc_loadline = 310,
	}"

	device domain 0 on
		device ref system_agent on end
		device ref igpu on end
		device ref sa_thermal on end
		device ref south_xhci on
			register "usb2_ports" = "{
				[0] = USB2_PORT_MID(OC_SKIP),		/* Type-A port right */
				[1] = USB2_PORT_FLEX(OC_SKIP),		/* 3G / LTE */
				[2] = USB2_PORT_TYPE_C(OC_SKIP),	/* Type-C port right */
				[3] = USB2_PORT_FLEX(OC_SKIP),		/* Camera */
				[4] = USB2_PORT_FLEX(OC_SKIP),		/* Bluetooth */
				[6] = USB2_PORT_FLEX(OC_SKIP),		/* Type-A port left */
				[7] = USB2_PORT_TYPE_C(OC_SKIP),	/* Type-C port right */
			}"
			register "usb3_ports" = "{
				[0] = USB3_PORT_DEFAULT(OC_SKIP),	/* Type-A port right */
				[1] = USB3_PORT_DEFAULT(OC_SKIP),	/* 4G */
				[2] = USB3_PORT_DEFAULT(OC_SKIP),	/* Type C port right */
				[3] = USB3_PORT_DEFAULT(OC_SKIP),	/* Type-A port left */
			}"
		end
		device ref thermal on end
		device ref sata on
			register "SataSpeedLimit" = "2"
			register "SataPortsEnable" = "{
				[0] = 1,
				[2] = 1,
			}"
		end
		device ref pcie_rp1 on
			# Root port #1 x4 (TBT)
			register "PcieRpEnable[0]" = "1"
			register "PcieRpClkReqSupport[0]" = "1"
			register "PcieRpClkReqNumber[0]" = "4"
			register "PcieRpClkSrcNumber[0]" = "4"
			register "PcieRpAdvancedErrorReporting[0]" = "1"
			register "PcieRpLtrEnable[0]" = "1"
			register "PcieRpHotPlug[0]" = "1"
		end
		device ref pcie_rp5 on
			# Root port #5 x1 (LAN)
			register "PcieRpEnable[4]" = "1"
			register "PcieRpClkReqSupport[4]" = "1"
			register "PcieRpClkReqNumber[4]" = "3"
			register "PcieRpClkSrcNumber[4]" = "3"
			register "PcieRpAdvancedErrorReporting[4]" = "1"
			register "PcieRpLtrEnable[4]" = "1"
		end
		device ref pcie_rp6 on
			# Root port #6 x1 (WLAN)
			register "PcieRpEnable[5]" = "1"
			register "PcieRpClkReqSupport[5]" = "1"
			register "PcieRpClkReqNumber[5]" = "2"
			register "PcieRpClkSrcNumber[5]" = "2"
			register "PcieRpAdvancedErrorReporting[5]" = "1"
			register "PcieRpLtrEnable[5]" = "1"
		end
		device ref pcie_rp9 on
			# Root port #9 x4 (NVMe)
			register "PcieRpEnable[8]" = "1"
			register "PcieRpClkReqSupport[8]" = "1"
			register "PcieRpClkReqNumber[8]" = "5"
			register "PcieRpClkSrcNumber[8]" = "5"
			register "PcieRpAdvancedErrorReporting[8]" = "1"
			register "PcieRpLtrEnable[8]" = "1"
		end
		device ref lpc_espi on
			register "gen1_dec" = "0x000c0681"
			register "gen2_dec" = "0x000c1641"
			register "gen3_dec" = "0x00040069"
			chip drivers/pc80/tpm
				device pnp 0c31.0 on end
			end
		end
		device ref p2sb off end
		device ref pmc on
			register "gpe0_dw0" = "GPP_C"
			register "gpe0_dw1" = "GPP_D"
			register "gpe0_dw2" = "GPP_E"
		end
		device ref hda on end
		device ref smbus on end
		device ref fast_spi on end
	end
end