radxa/rock-3c: init

Add hardware support module for Radxa Rock 3C SBC (Rockchip RK3566).
- Introduces rockchip/rk3566 platform module exposing
  hardware.rockchip.rk3566.enable.
- New radxa/rock-3c module enables radxa, rk3566, and defaults
  platformFirmware to pkgs.ubootRock3C.

README.md

@@ -437,6 +437,7 @@ See code for all available configurations.
 | [Purism Librem 13v3](purism/librem/13v3)                                          | `<nixos-hardware/purism/librem/13v3>`                   | `purism-librem-13v3`                   |
 | [Purism Librem 15v3](purism/librem/15v3)                                          | `<nixos-hardware/purism/librem/15v3>`                   | `purism-librem-15v3`                   |
 | [Purism Librem 5r4](purism/librem/5r4)                                            | `<nixos-hardware/purism/librem/5r4>`                    | `purism-librem-5r4`                    |
+| [Radxa ROCK 3C](radxa/rock-3c)                                                    | `<nixos-hardware/radxa/rock-3c>`                        | `radxa-rock-3c`                        |
 | [Radxa ROCK 4C+](radxa/rock-4c-plus)                                              | `<nixos-hardware/radxa/rock-4c-plus>`                   | `rock-4c-plus`                         |
 | [Radxa ROCK 5 Model B](radxa/rock-5b)                                             | `<nixos-hardware/radxa/rock-5b>`                        | `rock-5b`                              |
 | [Radxa ROCK Pi 4](radxa/rock-pi-4)                                                | `<nixos-hardware/radxa/rock-pi-4>`                      | `rock-pi-4`                            |

flake.nix

@@ -414,6 +414,7 @@
           raspberry-pi-3 = import ./raspberry-pi/3;
           raspberry-pi-4 = import ./raspberry-pi/4;
           raspberry-pi-5 = import ./raspberry-pi/5;
+          radxa-rock-3c = import ./radxa/rock-3c;
           rock-4c-plus = import ./radxa/rock-4c-plus;
           rock-5b = import ./radxa/rock-5b;
           rock-pi-4 = import ./radxa/rock-pi-4;

radxa/rock-3c/default.nix

@@ -0,0 +1,22 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+{
+  imports = [
+    ../.
+    ../../rockchip
+  ];
+
+  config = {
+    hardware = {
+      radxa.enable = true;
+      rockchip = {
+        rk3566.enable = true;
+        platformFirmware = lib.mkDefault pkgs.ubootRock3C;
+      };
+    };
+  };
+}

rockchip/default.nix

@@ -11,6 +11,7 @@ in
   imports = [
     ./rk3328
     ./rk3399
+    ./rk3566
     ./rk3588
   ];
 

rockchip/rk3566/default.nix

@@ -0,0 +1,18 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  cfg = config.hardware.rockchip.rk3566;
+in
+{
+  options.hardware.rockchip.rk3566 = {
+    enable = lib.mkEnableOption "Rockchip RK3566 support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware.rockchip.enable = true;
+  };
+}