Issue #680: Add AMD Radeon Pro W7700.

Author: geerlingguy

_cards_gpu/amd-radeon-pro-w7700.md

@@ -0,0 +1,28 @@
+---
+layout: card
+title: "AMD Radeon Pro W7700 16GB"
+picture: "/images/gpu-amd-radeon-pro-w7700.jpg"
+functionality_cm4: "None"
+functionality_pi5: "Currently Testing"
+driver_required: "Yes"
+github_issue: "https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/680"
+buy_link: https://amzn.to/48HUH0g
+videos: []
+---
+The Radeon Pro W7700 was released in 2023 and is supported by the open source `amdgpu` driver in the Linux Kernel.
+
+It requires a 16x PCIe card slot. You will need to supply 190W of power to the card directly through a 1x8-Pin PCIe power cable.
+
+### `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.
+
+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 still testing the card using a branch of Raspberry Pi's Linux kernel with GPU patches.
+
+See the linked GitHub issue for more details.

_cards_gpu/amd-radeon-rx6700xt-12gb.md

@@ -41,6 +41,6 @@ sudo modprobe amdgpu
 
 On the Compute Module 4, nobody has been able to get the `amdgpu` drivers to get far in their initialization stages. The Pi crashes due to PCIe bus memory allocation/mapping errors.
 
-On the Pi 5, the system doesn't crash, but I get an error `*ERROR* hw_init of IP block <psp> failed -22`.
+On the Pi 5, we are able to get full GPU graphics acceleration using Coreforge's [rpi-6.6.y-gpu](https://github.com/Coreforge/linux/tree/rpi-6.6.y-gpu) branch. If running Pi OS, you may have to restart `lightdm` after booting, otherwise it will default to the Pi's built-in GPU.
 
 See the linked GitHub issue for more details.