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Bryan Ramos 2026-04-19 20:18:26 -04:00
parent f4b436a6a5
commit 59347ec620
1 changed files with 12 additions and 0 deletions
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12
system/machines/tv/hardware.nix
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@ -18,6 +18,18 @@
};
};
# The nixos-hardware Pi 4 profile ships a base DTB with gpu/v3d/hdmi nodes
# all status="disabled". The `vc4-kms-v3d.dtbo` overlay flips them on — but
# U-Boot (NixOS's bootloader path on aarch64 Pi) bypasses the Pi firmware's
# config.txt dtoverlay mechanism. Apply the overlay at NixOS build time so
# it's baked into the DTB U-Boot hands to the kernel.
hardware.deviceTree.overlays = [
{
name = "vc4-kms-v3d";
dtboFile = "${config.boot.kernelPackages.kernel}/dtbs/overlays/vc4-kms-v3d.dtbo";
}
];
# UUIDs are baked into the Hydra SD image — identical on every Pi flashed
# from that image. FIRMWARE (FAT) holds the Pi bootloader; NIXOS_SD (ext4)
# is root. /boot/firmware must be mounted so nixos-rebuild can update