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nixos-hardware/pine64/star64/default.nix
Francesco Gazzetta 6d05cccc80 star64: set governor to schedutil
By default it's "performance"
2023-10-05 06:44:00 +00:00

48 lines
1.6 KiB
Nix

{ config, lib, pkgs, ... }: {
nixpkgs.overlays = [(self: super: {
makeModulesClosure = x: super.makeModulesClosure (x // {
allowMissing = true;
});
})];
# Somehow ttyS0 doesn't get enabled by default
systemd.services."serial-getty@ttyS0".enable = lib.mkDefault true;
systemd.services."serial-getty@ttyS0".wantedBy = lib.mkDefault [ "getty.target" ];
boot = {
# Force no ZFS (from nixos/modules/profiles/base.nix) until updated to kernel 6.0
# TODO still valid for star64?
supportedFilesystems =
lib.mkForce [ "btrfs" "reiserfs" "vfat" "f2fs" "xfs" "ntfs" "cifs" ];
consoleLogLevel = lib.mkDefault 7;
kernelPackages = lib.mkDefault (pkgs.callPackage ./linux-5.15.nix {
inherit (config.boot) kernelPatches;
});
kernelParams =
lib.mkDefault [ "console=tty0" "console=ttyS0,115200n8" "earlycon=sbi" ];
initrd.availableKernelModules = [
"8250_dw" # serial port driver
"dw_mmc_starfive" # eMMC/SD
"i2c_designware_platform" # i2c (needed for GPIO -> eMMC RST)
"axp15060_regulator" # PMIC (needed for eMMC)
];
# Ethernet. The module gets forced m due to other modules even though
# it's marked y in defconfig.
kernelModules = [ "dwmac-starfive-plat" ];
loader = {
grub.enable = lib.mkDefault false;
generic-extlinux-compatible.enable = lib.mkDefault true;
};
};
hardware.deviceTree.name =
lib.mkDefault "starfive/jh7110-pine64-star64.dtb";
# Only "performance" and "schedutil" are available,
# and "performance" takes precedence by default, which is a waste of power.
powerManagement.cpuFreqGovernor = lib.mkDefault "schedutil";
}