Issue #766: Add AMD RX 9070 XT GPU.

Author: geerlingguy

_cards_gpu/amd-radeon-rx-9070-xt.md

@@ -0,0 +1,28 @@
+---
+layout: card
+title: "AMD Radeon RX 9070 XT"
+picture: "/images/gpu-amd-rx-9070-xt.jpg"
+functionality_cm4: "None"
+functionality_pi5: "Currently Testing"
+driver_required: "Yes"
+github_issue: "https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/766"
+buy_link: https://amzn.to/4pNiDao
+videos: []
+---
+The Radeon RX 9060 XT is a midrange graphics card supported by the open source `amdgpu` driver in the Linux Kernel.
+
+It requires a 16x PCIe card slot. You will need to supply power to the card directly through a PCIe power plug.
+
+### `amdgpu` (open source) driver
+
+To get the amdgpu driver loaded, you have to [recompile the Linux kernel for Pi OS](https://github.com/geerlingguy/raspberry-pi-pcie-devices/tree/master/extras/cross-compile).
+
+Go to `Device Drivers` > `Graphics support` on the `menuconfig` step, and select the `amdgpu` driver to install.
+
+Also make sure you have the AMD firmware installed (`sudo apt install -y firmware-amd-graphics`) or the driver will complain about missing files. You may also need to download additional firmware files manually.
+
+On the Compute Module 4, it doesn't seem we can get `amdgpu` drivers to work with the Pi's PCIe bus.
+
+On the Pi 5, we are currently testing Coreforge's Pi OS Linux GPU support branch and yanghaku's 15-line DRM patch.
+
+See the linked GitHub issue for more details.