Remove the nixos-hardware module for Raspi4

modules/hardware/raspi4/base.nix

@@ -1,9 +1,5 @@
 { inputs, lib, pkgs, ... }:
 {
-  imports = [
-    inputs.nixos-hardware.nixosModules.raspberry-pi-4
-  ];
-
   boot = {
     supportedFilesystems = lib.mkForce [ "f2fs" "ntfs" "cifs" "ext4" "vfat" "nfs" "nfs4" ];
   };
@@ -15,8 +11,24 @@
     };
   };
 
-  hardware.raspberry-pi."4".fkms-3d.enable = true;
-  hardware.raspberry-pi."4".audio.enable = true;
+  boot = {
+    initrd.availableKernelModules = [
+      "usbhid"
+      "usb_storage"
+      "vc4"
+      "pcie_brcmstb" # required for the pcie bus to work
+      "reset-raspberrypi" # required for vl805 firmware to load
+    ];
+
+    loader = {
+      grub.enable = false;
+      generic-extlinux-compatible.enable = true;
+    };
+  };
+  boot.extraModulePackages = [ ];
+  boot.kernelParams = [ ];
+
+  hardware.enableRedistributableFirmware = true;
   hardware.pulseaudio.enable = true;
 
   environment.systemPackages = with pkgs; [

modules/hardware/raspi4/raspi-usb.nix

@@ -22,8 +22,6 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    hardware.raspberry-pi."4".dwc2.enable = true;
-
     networking = {
       hostName = cfg.hostname;
       hosts = {