mb/system76/rpl: Add Darter Pro 9 as a variant

The Darter Pro 9 (darp9) is a Raptor Lake-P board.

Tested with a custom TianoCore UefiPayloadPkg.

Working:

- PS/2 keyboard
- I2C HID touchpad
- Both DIMM slots with 5200 MT/s memory
- Both M.2 SSD slots
- All USB ports
- Webcam
- Ethernet
- WiFi/Bluetooth
- Integrated graphics using Intel GOP driver
- Internal microphone
- Internal speakers
- Combined 3.5mm headphone + mic audio
- 3.5mm microphone input
- S3 suspend/resume
- Booting Pop!_OS Linux 22.04 with kernel 6.2.7

Change-Id: If19caa90e5f90939b2946392da343b7f91f568ca
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75278
Reviewed-by: Jeremy Soller <jeremy@system76.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 63 insertions, 0 deletions

diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md
index 5b8c8a057766..6c6f1ab6e099 100644
--- a/Documentation/mainboard/index.md
+++ b/Documentation/mainboard/index.md
@@ -210,6 +210,7 @@ The boards in this section are not real mainboards, but emulators.
 - [Darter Pro 6](system76/darp6.md)
 - [Darter Pro 7](system76/darp7.md)
 - [Darter Pro 8](system76/darp8.md)
+- [Darter Pro 9](system76/darp9.md)
 - [Galago Pro 4](system76/galp4.md)
 - [Galago Pro 5](system76/galp5.md)
 - [Galago Pro 6](system76/galp6.md)
diff --git a/Documentation/mainboard/system76/darp9.md b/Documentation/mainboard/system76/darp9.md
new file mode 100644
index 000000000000..b0f156695a47
--- /dev/null
+++ b/Documentation/mainboard/system76/darp9.md
@@ -0,0 +1,62 @@
+# Syste76 Darter Pro 9 (darp9)
+
+## Specs
+
+- CPU
+  - Intel Core i5-1340P
+  - Intel Core i7-1360P
+- 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 DDR5 SO-DIMMs @ 5600 MHz
+- Networking
+  - Gigabit Ethernet (Realtek RTL8111H)
+  - M.2 NVMe/CNVi WiFi/Bluetooth (Intel Wi-Fi 6E AX210/211)
+- Power
+  - 90W (19V, 4.74A) AC barrel adapter
+  - 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
+  - 2x M.2 PCIe NVMe Gen 4 SSDs
+  - MicroSD card reader (OZ711LV2)
+- USB
+  - 1x USB 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                 |
++---------------------+---------------------+
+```
+
+The flash chip (U22) is above the left DIMM slot.