mb/google/hades: Add baseboard device tree

Add minimum device tree. Leave IOs default disable to optimize variant
override complexity.

BUG=b:271199379
TEST=abuild -a -x -c max -p none -t google/brya -b hades

Signed-off-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Change-Id: Ibb056c07193b4265352a9ec74829dcf02a9340bb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73415
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb
index a5e2217fef71..c05658a09077 100644
--- a/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb
+++ b/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb
@@ -1,4 +1,124 @@
 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 gspi1 on end
+		device ref pch_espi on
+			chip ec/google/chromeec
+				device pnp 0c09.0 on end
+			end
+		end
+		device ref hda on end
 	end
 end