mb/system76/adl-p: Add Darter Pro 8

The Darter Pro 8 (darp8) is an Alder Lake-P board.

Tested with a custom TianoCore UefiPayloadPkg.

Working:

- PS/2 keyboard, touchpad
- Both DIMM slots (with NMSO480E82-3200EA00)
- M.2 NVMe SSD (with MZVL2500HCJQ)
- M.2 SATA SSD (with WDS100T2B0B)
- All USB ports
- SD card reader
- Webcam
- Ethernet
- WiFi/Bluetooth
- Integrated graphics using Intel GOP driver
- Backlight controls on Windows 10 and Linux 6.1
- HDMI output
- DisplayPort output over USB-C
- Internal microphone
- Internal speakers
- Combined header + mic 3.5mm audio
- S0ix suspend/resume
- Booting Pop!_OS Linux 22.04 with kernel 5.18.5
- Internal flashing with flashrom v1.2-703-g76118a7c10ed

Not working:

- Detection of devices in TBT slot on boot

Change-Id: Icc84d6cc3aec7149d9b538305288bbe2b56d53e4
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65301
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

Documentation/mainboard/index.md

@@ -201,6 +201,7 @@ The boards in this section are not real mainboards, but emulators.
 - [Bonobo Workstation 14](system76/bonw14.md)
 - [Darter Pro 6](system76/darp6.md)
 - [Darter Pro 7](system76/darp7.md)
+- [Darter Pro 8](system76/darp8.md)
 - [Galago Pro 4](system76/galp4.md)
 - [Galago Pro 5](system76/galp5.md)
 - [Gazelle 15](system76/gaze15.md)

Documentation/mainboard/system76/darp8.md

@@ -0,0 +1,82 @@
+# Syste76 Darter Pro 8 (darp8)
+
+## Specs
+
+- CPU
+  - Intel Core i5-1240P
+  - Intel Core i7-1260P
+- EC
+  - ITE IT5570E running [System76 EC](https://github.com/system76/ec)
+- Graphics
+  - Intel Iris Xe Graphics
+  - eDP 15.6" 1920x1080@60Hz LCD
+  - 1x HDMI
+  - 1x DisplayPort 1.4 over USB-C
+- Memory
+  - Up to 64GB (2x32GB) dual-channel DDR4 SO-DIMMs @ 3200 MHz
+- Networking
+  - Gigabit Ethernet
+  - M.2 NVMe/CNVi WiFi/Bluetooth (Intel Wi-Fi 6 AX200/201)
+- Power
+  - 90W (19V, 4.74A) AC barrel adapter (Chicony A16-090P1A)
+  - USB-C charging, compatible with 65W+ chargers
+  - 73Wh 4-cell Lithium-ion battery (L140BAT-4)
+- Sound
+  - Realtek ALC256 codec
+  - Internal speakers and microphone
+  - Combined 3.5mm headphone/microphone jack
+  - HDMI, USB-C DisplayPort audio
+- Storage
+  - M.2 PCIe NVMe Gen 4 SSD
+  - M.2 PCIe NVMe Gen 3 or SATA 3 SSD
+  - MicroSD card reader (OZ711LV2)
+- USB
+  - 1x USB-C Type-C with Thunderbolt 4
+  - 1x USB 3.2 (Gen 2) Type-C
+  - 1x USB 3.2 (Gen 2) Type-A
+  - 1x USB 2.0 Type-A
+- Dimensions
+  - 35.7cm x 22.05cm x 1.99cm, 1.74kg
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+---------------------+
+| Type                | Value               |
++=====================+=====================+
+| Socketed flash      | no                  |
++---------------------+---------------------+
+| Vendor              | GigaDevice          |
++---------------------+---------------------+
+| Model               | GD25B256E           |
++---------------------+---------------------+
+| Size                | 32 MiB              |
++---------------------+---------------------+
+| Package             | WSON-8              |
++---------------------+---------------------+
+| Internal flashing   | yes                 |
++---------------------+---------------------+
+| External flashing   | yes                 |
++---------------------+---------------------+
+```
+```eval_rst
++---------------------+---------------------+
+| Type                | Value               |
++=====================+=====================+
+| Socketed flash      | no                  |
++---------------------+---------------------+
+| Vendor              | Winbond             |
++---------------------+---------------------+
+| Model               | W25Q256.V           |
++---------------------+---------------------+
+| Size                | 32 MiB              |
++---------------------+---------------------+
+| Package             | WSON-8              |
++---------------------+---------------------+
+| Internal flashing   | yes                 |
++---------------------+---------------------+
+| External flashing   | yes                 |
++---------------------+---------------------+
+```
+
+The flash chip (U19) is above the left DIMM slot.