framework/desktop: Add minimum kernel version

Signed-off-by: Daniel Schaefer <dhs@frame.work>

framework/desktop/amd-ai-max-300-series/README.md

@@ -1,5 +1,11 @@
 # [Framework Desktop](https://frame.work/desktop)
 
+## Kernel version
+
+The recommended version is 6.15 or newer, it has good GPU and also EC firmware support (for sensors and ARGB).
+The lowest recommended version is 6.14. It has good GPU support already.
+The absolute lowest that runs okay on headless systems is 6.11, but the GPU is not fully supported yet.
+
 ## Updating Firmware
 
 First put enable `fwupd`

framework/desktop/amd-ai-max-300-series/default.nix

@@ -1,4 +1,9 @@
-{ config, lib, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 {
   imports = [
     ../../../common/cpu/amd
@@ -7,4 +12,9 @@
     ../../../common/pc/ssd
     ../../framework-tool.nix
   ];
+
+  # 6.14 and above have good GPU support
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "6.14") (
+    lib.mkDefault pkgs.linuxPackages_latest
+  );
 }