src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb

chip soc/intel/alderlake

	# GPE configuration
	register "pmc_gpe0_dw0" = "GPP_A"
	register "pmc_gpe0_dw1" = "GPP_E"
	register "pmc_gpe0_dw2" = "GPP_F"

	# EC host command ranges are in 0x800-0x8ff & 0x200-0x20f
	register "gen1_dec" = "0x00fc0801"
	register "gen2_dec" = "0x000c0201"
	# EC memory map range is 0x900-0x9ff
	register "gen3_dec" = "0x00fc0901"

	# S0ix enable
	register "s0ix_enable" = "1"

	# DPTF enable
	register "dptf_enable" = "1"

	register "tcc_offset" = "10"     # TCC of 90

	# Enable CNVi BT
	register "cnvi_bt_core" = "true"

	register "usb2_ports[0]" = "USB2_PORT_EMPTY"
	register "usb2_ports[1]" = "USB2_PORT_EMPTY"
	register "usb2_ports[2]" = "USB2_PORT_EMPTY"
	register "usb2_ports[3]" = "USB2_PORT_EMPTY"
	register "usb2_ports[4]" = "USB2_PORT_EMPTY"
	register "usb2_ports[5]" = "USB2_PORT_EMPTY"
	register "usb2_ports[6]" = "USB2_PORT_EMPTY"
	register "usb2_ports[7]" = "USB2_PORT_EMPTY"
	register "usb2_ports[8]" = "USB2_PORT_EMPTY"
	register "usb2_ports[9]" = "USB2_PORT_EMPTY"

	register "usb3_ports[0]" = "USB3_PORT_EMPTY"
	register "usb3_ports[1]" = "USB3_PORT_EMPTY"
	register "usb3_ports[2]" = "USB3_PORT_EMPTY"
	register "usb3_ports[3]" = "USB3_PORT_EMPTY"

	register "tcss_ports[0]" = "TCSS_PORT_EMPTY"
	register "tcss_ports[1]" = "TCSS_PORT_EMPTY"
	register "tcss_ports[2]" = "TCSS_PORT_EMPTY"
	register "tcss_ports[3]" = "TCSS_PORT_EMPTY"

	register "pch_slp_s3_min_assertion_width" = "SLP_S3_ASSERTION_50_MS"
	register "pch_slp_s4_min_assertion_width" = "SLP_S4_ASSERTION_1S"
	register "pch_slp_sus_min_assertion_width" = "SLP_SUS_ASSERTION_1_S"
	register "pch_slp_a_min_assertion_width" = "SLP_A_ASSERTION_98_MS"
	register "pch_reset_power_cycle_duration" = "POWER_CYCLE_DURATION_1S"

	# HD Audio
	register "pch_hda_dsp_enable" = "1"
	register "pch_hda_idisp_link_tmode" = "HDA_TMODE_8T"
	register "pch_hda_idisp_link_frequency" = "HDA_LINKFREQ_96MHZ"
	register "pch_hda_idisp_codec_enable" = "1"

	# FIVR RFI Spread Spectrum 1.5%
	register "fivr_spread_spectrum" = "FIVR_SS_1_5"

	# Disable C state auto-demotion for all brya baseboards
	register "disable_c1_state_auto_demotion" = "1"

	register "serial_io_uart_mode" = "{
		[PchSerialIoIndexUART0] = PchSerialIoPci,
		[PchSerialIoIndexUART1] = PchSerialIoDisabled,
		[PchSerialIoIndexUART2] = PchSerialIoDisabled,
	}"

	device domain 0 on
		# The timing values can be derived from datasheet of display panel
		# You can use EDID string to identify the type of display on the board
		# use below command to get display info from EDID
		# strings /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/edid

		# refer to display PRM document (Volume 2b: Command Reference: Registers)
		# for more info on display control registers
		# https://01.org/linuxgraphics/documentation/hardware-specification-prms
		#+-----------------------------+---------------------------------------+-----+
		#| Intel docs                  | devicetree.cb                         | eDP |
		#+-----------------------------+---------------------------------------+-----+
		#| Power up delay              | `gpu_panel_power_up_delay`            | T3  |
		#+-----------------------------+---------------------------------------+-----+
		#| Power on to backlight on    | `gpu_panel_power_backlight_on_delay`  | T7  |
		#+-----------------------------+---------------------------------------+-----+
		#| Power Down delay            | `gpu_panel_power_down_delay`          | T10 |
		#+-----------------------------+---------------------------------------+-----+
		#| Backlight off to power down | `gpu_panel_power_backlight_off_delay` | T9  |
		#+-----------------------------+---------------------------------------+-----+
		#| Power Cycle Delay           | `gpu_panel_power_cycle_delay`         | T12 |
		#+-----------------------------+---------------------------------------+-----+
		device ref igpu on
			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,
			}"
		end
		device ref dtt on end
		device ref tcss_xhci on end
		device ref xhci on end
		device ref shared_sram on end
		device ref cnvi_wifi on
			chip drivers/wifi/generic
				register "wake" = "GPE0_PME_B0"
				register "add_acpi_dma_property" = "true"
				device generic 0 on end
			end
		end
		device ref heci1 on end
		device ref sata on end
		device ref uart0 on end
		device ref pch_espi on
			chip ec/google/chromeec
				device pnp 0c09.0 on end
			end
		end
		device ref hda on end
		device ref smbus on end
	end
end