From 011660e3f7480f3ea807bb0e53003e6961872d12 Mon Sep 17 00:00:00 2001
From: "Issam E. Maghni" <issam.e.maghni@mailbox.org>
Date: Thu, 19 Feb 2026 08:09:59 -0500
Subject: [PATCH] raspberry-pi/5: add modules for RP1 controller

---
 raspberry-pi/5/default.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/raspberry-pi/5/default.nix b/raspberry-pi/5/default.nix
index bc2bc79d..d90c7886 100644
--- a/raspberry-pi/5/default.nix
+++ b/raspberry-pi/5/default.nix
@@ -5,6 +5,9 @@
   ...
 }:
 
+let
+  linuxVariant = config.boot.kernelPackages.kernel.pname;
+in
 {
   imports = [ ../common/default.nix ];
 
@@ -15,7 +18,13 @@
     initrd.availableKernelModules = [
       "nvme"
       "pcie-brcmstb"
-    ];
+      "clk-rp1"
+    ]
+    # CONFIG_MISC_RP1 is named CONFIG_MFD_RP1 in RPi's fork.
+    ++ lib.optional (linuxVariant == "linux") "rp1_pci"
+    ++ lib.optional (linuxVariant == "linux-rpi") "rp1"
+    # CONFIG_PINCTRL_RP1 is not a tristate in RPi's fork.
+    ++ lib.optional (linuxVariant == "linux") "pinctrl-rp1";
   };
 
   hardware.deviceTree.filter = lib.mkDefault "bcm2712*-rpi-*.dtb";