Remove unnecessary configuration for odroid-m1

hardkernel/odroid-m1/default.nix

@@ -1,40 +1,23 @@
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 
 {
   imports = [
     ./petitboot
   ];
 
+  # Enable petitboot support.
   boot.loader.petitboot.enable = lib.mkForce true;
 
-  # Fails to rebuild unless grub is explicitly disabled
+  # `nixos-rebuild` fails unless grub is explicitly disabled.
   boot.loader.grub.enable = lib.mkForce false;
 
-  # TODO: Can this be removed? Presumably anything built with 25.11 / unstable
-  #       or later will be on a kernel >6.6
-  # Use kernel >6.6 The devicetree is missing from kernel versions older than this.
-  # boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "6.6") (lib.mkDefault pkgs.linuxPackages_latest);
-
-  # TODO: Debug why removing this breaks booting from petitboot
-  # boot.supportedFilesystems = lib.mkForce [
-  #   "btrfs"
-  #   "cifs"
-  #   "f2fs"
-  #   "jfs"
-  #   "ntfs"
-  #   "reiserfs"
-  #   "vfat"
-  #   "xfs"
-  # ];
-
-  # TODO: Some of these could potentially be omitted, check which ones are
-  #       actually necessary for disk access to function
   boot.initrd.availableKernelModules = [
-    # Only nvme emitted when using nixos-generate-config on my odroid-m1
     "nvme"
-    # "nvme-core"
-    # "phy-rockchip-naneng-combphy"
-    # "phy-rockchip-snps-pcie3"
   ];
 
   # Petitboot uses this port and baud rate on the board's serial port. It's
@@ -42,4 +25,7 @@
   # console access to work well.
   boot.kernelParams = [ "console=ttyS2,1500000" ];
   hardware.deviceTree.name = "rockchip/rk3568-odroid-m1.dtb";
+  # FIXME: The serial terminal does seem to throw random errors still, but that
+  #        doesn't appear to crash anything. May need adjusted if you're
+  #        actually using the GPIO.
 }